Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

132 files changed, 38001 insertions, 0 deletions

diff --git a/widget/tests/TestChromeMargin.cpp b/widget/tests/TestChromeMargin.cpp
new file mode 100644
index 0000000000..0eed86b208
--- /dev/null
+++ b/widget/tests/TestChromeMargin.cpp
@@ -0,0 +1,130 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This tests the margin parsing functionality in nsAttrValue.cpp, which
+ * is accessible via nsContentUtils, and is used in setting chromemargins
+ * to widget windows. It's located here due to linking issues in the
+ * content directory.
+ */
+
+/* This test no longer compiles now that we've removed nsIContentUtils (bug
+ * 647273).  We need to be internal code in order to include nsContentUtils.h,
+ * but defining MOZILLA_INTERNAL_API is not enough to make us internal.
+ */
+
+#include "TestHarness.h"
+
+#ifndef MOZILLA_INTERNAL_API
+#  error This test needs MOZILLA_INTERNAL_API (see bug 652123)
+#endif
+
+#include "nscore.h"
+#include "nsContentUtils.h"
+#include "nsString.h"
+
+struct DATA {
+  bool shouldfail;
+  const char* margins;
+  int top;
+  int right;
+  int bottom;
+  int left;
+};
+
+const bool SHOULD_FAIL = true;
+const int SHOULD_PASS = false;
+
+const DATA Data[] = {
+    {SHOULD_FAIL, "", 1, 2, 3, 4},
+    {SHOULD_FAIL, "1,0,0,0", 1, 2, 3, 4},
+    {SHOULD_FAIL, "1,2,0,0", 1, 2, 3, 4},
+    {SHOULD_FAIL, "1,2,3,0", 1, 2, 3, 4},
+    {SHOULD_FAIL, "4,3,2,1", 1, 2, 3, 4},
+    {SHOULD_FAIL, "azsasdasd", 0, 0, 0, 0},
+    {SHOULD_FAIL, ",azsasdasd", 0, 0, 0, 0},
+    {SHOULD_FAIL, "           ", 1, 2, 3, 4},
+    {SHOULD_FAIL,
+     "azsdfsdfsdfsdfsdfsasdasd,asdasdasdasdasdasd,asdadasdasd,asdasdasdasd", 0,
+     0, 0, 0},
+    {SHOULD_FAIL, "as,as,as,as", 0, 0, 0, 0},
+    {SHOULD_FAIL, "0,0,0", 0, 0, 0, 0},
+    {SHOULD_FAIL, "0,0", 0, 0, 0, 0},
+    {SHOULD_FAIL, "4.6,1,1,1", 0, 0, 0, 0},
+    {SHOULD_FAIL, ",,,,", 0, 0, 0, 0},
+    {SHOULD_FAIL, "1, , , ,", 0, 0, 0, 0},
+    {SHOULD_FAIL, "1, , ,", 0, 0, 0, 0},
+    {SHOULD_FAIL, "@!@%^&^*()", 1, 2, 3, 4},
+    {SHOULD_PASS, "4,3,2,1", 4, 3, 2, 1},
+    {SHOULD_PASS, "-4,-3,-2,-1", -4, -3, -2, -1},
+    {SHOULD_PASS, "10000,3,2,1", 10000, 3, 2, 1},
+    {SHOULD_PASS, "4  , 3   , 2 , 1", 4, 3, 2, 1},
+    {SHOULD_PASS, "4,    3   ,2,1", 4, 3, 2, 1},
+    {SHOULD_FAIL, "4,3,2,10000000000000 --", 4, 3, 2, 10000000000000},
+    {SHOULD_PASS, "4,3,2,1000", 4, 3, 2, 1000},
+    {SHOULD_PASS, "2147483647,3,2,1000", 2147483647, 3, 2, 1000},
+    {SHOULD_PASS, "2147483647,2147483647,2147483647,2147483647", 2147483647,
+     2147483647, 2147483647, 2147483647},
+    {SHOULD_PASS, "-2147483647,3,2,1000", -2147483647, 3, 2, 1000},
+    {SHOULD_FAIL, "2147483648,3,2,1000", 1, 3, 2, 1000},
+    {0, nullptr, 0, 0, 0, 0}};
+
+void DoAttrValueTest() {
+  int idx = -1;
+  bool didFail = false;
+  while (Data[++idx].margins) {
+    nsAutoString str;
+    str.AssignLiteral(Data[idx].margins);
+    nsIntMargin values(99, 99, 99, 99);
+    bool result = nsContentUtils::ParseIntMarginValue(str, values);
+
+    // if the parse fails
+    if (!result) {
+      if (Data[idx].shouldfail) continue;
+      fail(Data[idx].margins);
+      didFail = true;
+      printf("*1\n");
+      continue;
+    }
+
+    if (Data[idx].shouldfail) {
+      if (Data[idx].top == values.top && Data[idx].right == values.right &&
+          Data[idx].bottom == values.bottom && Data[idx].left == values.left) {
+        // not likely
+        fail(Data[idx].margins);
+        didFail = true;
+        printf("*2\n");
+        continue;
+      }
+      // good failure, parse failed and that's what we expected.
+      continue;
+    }
+#if 0
+    printf("%d==%d %d==%d %d==%d %d==%d\n",
+      Data[idx].top, values.top,
+      Data[idx].right, values.right,
+      Data[idx].bottom, values.bottom,
+      Data[idx].left, values.left);
+#endif
+    if (Data[idx].top == values.top && Data[idx].right == values.right &&
+        Data[idx].bottom == values.bottom && Data[idx].left == values.left) {
+      // good parse results
+      continue;
+    } else {
+      fail(Data[idx].margins);
+      didFail = true;
+      printf("*3\n");
+      continue;
+    }
+  }
+
+  if (!didFail) passed("nsAttrValue margin parsing tests passed.");
+}
+
+int main(int argc, char** argv) {
+  ScopedXPCOM xpcom("");
+  if (xpcom.failed()) return 1;
+  DoAttrValueTest();
+  return 0;
+}
diff --git a/widget/tests/browser/browser.toml b/widget/tests/browser/browser.toml
new file mode 100644
index 0000000000..506fe1a998
--- /dev/null
+++ b/widget/tests/browser/browser.toml
@@ -0,0 +1,90 @@
+[DEFAULT]
+skip-if = ["os == 'android'"]
+
+["browser_test_AZERTY_digit_shortcut.js"]
+skip-if = ["os == 'linux'"] # Linux build has not implemented sendNativeKeyEvent yet
+
+["browser_test_ContentCache.js"]
+
+["browser_test_InputContextURI.js"]
+
+["browser_test_clipboard_contextmenu.js"]
+
+["browser_test_clipboardcache.js"]
+skip-if = [
+  "os == 'win' && bits == 32 && !debug", # Bug 1759422
+  "os == 'linux'", # Bug 1792749
+]
+
+["browser_test_fullscreen_size.js"]
+
+["browser_test_ime_state_in_contenteditable_on_focus_move_in_remote_content.js"]
+support-files = [
+  "file_ime_state_tests.html",
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_on_focus_move.js",
+]
+
+["browser_test_ime_state_in_contenteditable_on_readonly_change_in_remote_content.js"]
+support-files = [
+  "file_ime_state_tests.html",
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_in_contenteditable_on_readonly_change.js",
+]
+
+["browser_test_ime_state_in_designMode_on_focus_move_in_remote_content.js"]
+support-files = [
+  "file_ime_state_tests.html",
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_on_focus_move.js",
+]
+
+["browser_test_ime_state_in_plugin_in_remote_content.js"]
+support-files = ["../file_ime_state_test_helper.js"]
+
+["browser_test_ime_state_in_text_control_on_reframe_in_remote_content.js"]
+support-files = [
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_in_text_control_on_reframe.js",
+]
+
+["browser_test_ime_state_on_editable_state_change_in_remote_content.js"]
+support-files = ["../file_ime_state_test_helper.js"]
+
+["browser_test_ime_state_on_focus_move_in_remote_content.js"]
+support-files = [
+  "file_ime_state_tests.html",
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_on_focus_move.js",
+]
+
+["browser_test_ime_state_on_input_type_change_in_remote_content.js"]
+skip-if = ["true"] # Bug 1817704
+support-files = [
+  "file_ime_state_tests.html",
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_on_input_type_change.js",
+]
+
+["browser_test_ime_state_on_readonly_change_in_remote_content.js"]
+support-files = [
+  "file_ime_state_tests.html",
+  "../file_ime_state_test_helper.js",
+  "../file_test_ime_state_on_readonly_change.js",
+]
+
+["browser_test_scrollbar_colors.js"]
+skip-if = ["os == 'linux'"] # bug 1460109
+support-files = ["helper_scrollbar_colors.html"]
+
+["browser_test_swipe_gesture.js"]
+skip-if = [
+  "win11_2009 && bits == 32 && !debug", # Bug 1759422
+  "verify", # Bug 1800022
+  "os == 'linux'", # Bug 1784772
+]
+support-files = [
+  "helper_swipe_gesture.html",
+  "!/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js",
+  "!/gfx/layers/apz/test/mochitest/apz_test_utils.js",
+]
diff --git a/widget/tests/browser/browser_test_AZERTY_digit_shortcut.js b/widget/tests/browser/browser_test_AZERTY_digit_shortcut.js
new file mode 100644
index 0000000000..ef5112ac01
--- /dev/null
+++ b/widget/tests/browser/browser_test_AZERTY_digit_shortcut.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function () {
+  let tabs = [];
+  for (let i = 0; i < 10; i++) {
+    const tab = BrowserTestUtils.addTab(gBrowser);
+    tabs.push(tab);
+  }
+  const kIsMac = AppConstants.platform == "macosx";
+
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/toolkit/content/tests/browser/file_empty.html",
+    async function (browser) {
+      let NativeKeyConstants = {};
+      Services.scriptloader.loadSubScript(
+        "chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js",
+        NativeKeyConstants
+      );
+
+      function promiseSynthesizeAccelHyphenMinusWithAZERTY() {
+        return new Promise(resolve =>
+          EventUtils.synthesizeNativeKey(
+            EventUtils.KEYBOARD_LAYOUT_FRENCH_PC,
+            kIsMac
+              ? NativeKeyConstants.MAC_VK_ANSI_6
+              : NativeKeyConstants.WIN_VK_6,
+            { accelKey: true },
+            kIsMac ? "-" : "",
+            kIsMac ? "-" : "",
+            resolve
+          )
+        );
+      }
+
+      async function waitForCondition(aFunc) {
+        for (let i = 0; i < 60; i++) {
+          await new Promise(resolve =>
+            requestAnimationFrame(() => requestAnimationFrame(resolve))
+          );
+          if (aFunc(ZoomManager.getFullZoomForBrowser(browser))) {
+            return true;
+          }
+        }
+        return false;
+      }
+
+      const minZoomLevel = ZoomManager.MIN;
+      while (true) {
+        const currentZoom = ZoomManager.getFullZoomForBrowser(browser);
+        if (minZoomLevel == currentZoom) {
+          break;
+        }
+        info(`Trying to zoom out: ${currentZoom}`);
+        await promiseSynthesizeAccelHyphenMinusWithAZERTY();
+        if (!(await waitForCondition(aZoomLevel => aZoomLevel < currentZoom))) {
+          ok(false, `Failed to zoom out from ${currentZoom}`);
+          return;
+        }
+      }
+
+      await promiseSynthesizeAccelHyphenMinusWithAZERTY();
+      await waitForCondition(() => false);
+      is(
+        gBrowser.selectedBrowser,
+        browser,
+        "Tab shouldn't be changed by Ctrl+- of AZERTY keyboard layout"
+      );
+      // Reset the zoom before going to the next test.
+      EventUtils.synthesizeKey("0", { accelKey: true });
+      await waitForCondition(aZoomLevel => aZoomLevel == 1);
+    }
+  );
+
+  while (tabs.length) {
+    await new Promise(resolve => {
+      const tab = tabs.shift();
+      BrowserTestUtils.waitForTabClosing(tab).then(resolve);
+      BrowserTestUtils.removeTab(tab);
+    });
+  }
+});
diff --git a/widget/tests/browser/browser_test_ContentCache.js b/widget/tests/browser/browser_test_ContentCache.js
new file mode 100644
index 0000000000..7b64e00f13
--- /dev/null
+++ b/widget/tests/browser/browser_test_ContentCache.js
@@ -0,0 +1,296 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function () {
+  const TIP = Cc["@mozilla.org/text-input-processor;1"].createInstance(
+    Ci.nsITextInputProcessor
+  );
+  let notifications = [];
+  const observer = (aTIP, aNotification) => {
+    switch (aNotification.type) {
+      case "request-to-commit":
+        aTIP.commitComposition();
+        break;
+      case "request-to-cancel":
+        aTIP.cancelComposition();
+        break;
+      case "notify-end-input-transaction":
+      case "notify-focus":
+      case "notify-blur":
+      case "notify-text-change":
+      case "notify-selection-change":
+        notifications.push(aNotification);
+        break;
+    }
+    return true;
+  };
+
+  function checkNotifications(aExpectedNotifications, aDescription) {
+    for (const expectedNotification of aExpectedNotifications) {
+      const notification = notifications.find(
+        element => element.type == expectedNotification.type
+      );
+      if (expectedNotification.expected) {
+        isnot(
+          notification,
+          undefined,
+          `"${expectedNotification.type}" should be notified ${aDescription}`
+        );
+      } else {
+        is(
+          notification,
+          undefined,
+          `"${expectedNotification.type}" should not be notified ${aDescription}`
+        );
+      }
+    }
+  }
+
+  ok(
+    TIP.beginInputTransaction(window, observer),
+    "nsITextInputProcessor.beingInputTransaction should return true"
+  );
+  ok(
+    TIP.beginInputTransactionForTests(window, observer),
+    "nsITextInputProcessor.beginInputTransactionForTests should return true"
+  );
+
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/toolkit/content/tests/browser/file_empty.html",
+    async function (browser) {
+      ok(browser.isRemoteBrowser, "This test passes only in e10s mode");
+
+      // IMEContentObserver flushes pending IME notifications at next vsync
+      // after something happens.  Therefore, after doing something in content
+      // process, we need to guarantee that IMEContentObserver has a change to
+      // send IME notifications to the main process with calling this function.
+      function waitForSendingIMENotificationsInContent() {
+        return SpecialPowers.spawn(browser, [], async () => {
+          await new Promise(resolve =>
+            content.requestAnimationFrame(() =>
+              content.requestAnimationFrame(resolve)
+            )
+          );
+        });
+      }
+
+      /**
+       * Test when empty editor gets focus
+       */
+      notifications = [];
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.body.innerHTML = "<div contenteditable><br></div>";
+        const editor = content.document.querySelector("div[contenteditable]");
+        editor.focus();
+      });
+
+      await waitForSendingIMENotificationsInContent();
+
+      (function () {
+        checkNotifications(
+          [
+            { type: "notify-focus", expected: true },
+            { type: "notify-blur", expected: false },
+            { type: "notify-end-input-transaction", expected: false },
+            { type: "notify-text-change", expected: false },
+            { type: "notify-selection-change", expected: false },
+          ],
+          "after empty editor gets focus"
+        );
+        const text = EventUtils.synthesizeQueryTextContent(0, 1000);
+        ok(
+          text?.succeeded,
+          "query text content should succeed after empty editor gets focus"
+        );
+        if (text?.succeeded) {
+          is(
+            text.text.replace(/[\r\n]/g, ""),
+            "",
+            "text should be only line breaks after empty editor gets focus"
+          );
+        }
+        const selection = EventUtils.synthesizeQuerySelectedText();
+        ok(
+          selection?.succeeded,
+          "query selected text should succeed after empty editor gets focus"
+        );
+        if (selection?.succeeded) {
+          ok(
+            !selection.notFound,
+            "query selected text should find a selection range after empty editor gets focus"
+          );
+          if (!selection.notFound) {
+            is(
+              selection.text,
+              "",
+              "selection should be collapsed after empty editor gets focus"
+            );
+          }
+        }
+      })();
+
+      /**
+       * Test when there is non-collapsed selection
+       */
+      notifications = [];
+      await SpecialPowers.spawn(browser, [], () => {
+        const editor = content.document.querySelector("div[contenteditable]");
+        editor.innerHTML = "<p>abc</p><p>def</p>";
+        content
+          .getSelection()
+          .setBaseAndExtent(
+            editor.querySelector("p").firstChild,
+            2,
+            editor.querySelector("p + p").firstChild,
+            1
+          );
+      });
+
+      await waitForSendingIMENotificationsInContent();
+
+      (function () {
+        checkNotifications(
+          [
+            { type: "notify-focus", expected: false },
+            { type: "notify-blur", expected: false },
+            { type: "notify-end-input-transaction", expected: false },
+            { type: "notify-text-change", expected: true },
+            { type: "notify-selection-change", expected: true },
+          ],
+          "after modifying focused editor"
+        );
+        const text = EventUtils.synthesizeQueryTextContent(0, 1000);
+        ok(
+          text?.succeeded,
+          "query text content should succeed after modifying focused editor"
+        );
+        if (text?.succeeded) {
+          is(
+            text.text.trim().replace(/\r\n/g, "\n").replace(/\n\n+/g, "\n"),
+            "abc\ndef",
+            "text should include the both paragraph's text after modifying focused editor"
+          );
+        }
+        const selection = EventUtils.synthesizeQuerySelectedText();
+        ok(
+          selection?.succeeded,
+          "query selected text should succeed after modifying focused editor"
+        );
+        if (selection?.succeeded) {
+          ok(
+            !selection.notFound,
+            "query selected text should find a selection range after modifying focused editor"
+          );
+          if (!selection.notFound) {
+            is(
+              selection.text
+                .trim()
+                .replace(/\r\n/g, "\n")
+                .replace(/\n\n+/g, "\n"),
+              "c\nd",
+              "selection should have the selected characters in the both paragraphs after modifying focused editor"
+            );
+          }
+        }
+      })();
+
+      /**
+       * Test when there is no selection ranges
+       */
+      notifications = [];
+      await SpecialPowers.spawn(browser, [], () => {
+        content.getSelection().removeAllRanges();
+      });
+
+      await waitForSendingIMENotificationsInContent();
+
+      (function () {
+        checkNotifications(
+          [
+            { type: "notify-focus", expected: false },
+            { type: "notify-blur", expected: false },
+            { type: "notify-end-input-transaction", expected: false },
+            { type: "notify-text-change", expected: false },
+            { type: "notify-selection-change", expected: true },
+          ],
+          "after removing all selection ranges from the focused editor"
+        );
+        const text = EventUtils.synthesizeQueryTextContent(0, 1000);
+        ok(
+          text?.succeeded,
+          "query text content should succeed after removing all selection ranges from the focused editor"
+        );
+        if (text?.succeeded) {
+          is(
+            text.text.trim().replace(/\r\n/g, "\n").replace(/\n\n+/g, "\n"),
+            "abc\ndef",
+            "text should include the both paragraph's text after removing all selection ranges from the focused editor"
+          );
+        }
+        const selection = EventUtils.synthesizeQuerySelectedText();
+        ok(
+          selection?.succeeded,
+          "query selected text should succeed after removing all selection ranges from the focused editor"
+        );
+        if (selection?.succeeded) {
+          ok(
+            selection.notFound,
+            "query selected text should find no selection range after removing all selection ranges from the focused editor"
+          );
+        }
+      })();
+
+      /**
+       * Test when no editable element has focus.
+       */
+      notifications = [];
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.body.innerHTML = "abcdef";
+      });
+
+      await waitForSendingIMENotificationsInContent();
+
+      (function () {
+        checkNotifications(
+          [
+            { type: "notify-focus", expected: false },
+            { type: "notify-blur", expected: true },
+          ],
+          "removing editor should make ContentCacheInParent not have any data"
+        );
+        const text = EventUtils.synthesizeQueryTextContent(0, 1000);
+        ok(
+          !text?.succeeded,
+          "query text content should fail because no editable element has focus"
+        );
+        const selection = EventUtils.synthesizeQuerySelectedText();
+        ok(
+          !selection?.succeeded,
+          "query selected text should fail because no editable element has focus"
+        );
+        const caret = EventUtils.synthesizeQueryCaretRect(0);
+        ok(
+          !caret?.succeeded,
+          "query caret rect should fail because no editable element has focus"
+        );
+        const textRect = EventUtils.synthesizeQueryTextRect(0, 5, false);
+        ok(
+          !textRect?.succeeded,
+          "query text rect should fail because no editable element has focus"
+        );
+        const textRectArray = EventUtils.synthesizeQueryTextRectArray(0, 5);
+        ok(
+          !textRectArray?.succeeded,
+          "query text rect array should fail because no editable element has focus"
+        );
+        const editorRect = EventUtils.synthesizeQueryEditorRect();
+        todo(
+          !editorRect?.succeeded,
+          "query editor rect should fail because no editable element has focus"
+        );
+      })();
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_InputContextURI.js b/widget/tests/browser/browser_test_InputContextURI.js
new file mode 100644
index 0000000000..52f05d90f9
--- /dev/null
+++ b/widget/tests/browser/browser_test_InputContextURI.js
@@ -0,0 +1,156 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const gDOMWindowUtils = EventUtils._getDOMWindowUtils(window);
+
+function promiseURLBarFocus() {
+  const waitForFocusInURLBar = BrowserTestUtils.waitForEvent(gURLBar, "focus");
+  gURLBar.blur();
+  gURLBar.focus();
+  return Promise.all([
+    waitForFocusInURLBar,
+    TestUtils.waitForCondition(
+      () =>
+        gDOMWindowUtils.IMEStatus === Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED &&
+        gDOMWindowUtils.inputContextOrigin ===
+          Ci.nsIDOMWindowUtils.INPUT_CONTEXT_ORIGIN_MAIN
+    ),
+  ]);
+}
+
+function promiseIMEStateEnabledByRemote() {
+  return TestUtils.waitForCondition(
+    () =>
+      gDOMWindowUtils.IMEStatus === Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED &&
+      gDOMWindowUtils.inputContextOrigin ===
+        Ci.nsIDOMWindowUtils.INPUT_CONTEXT_ORIGIN_CONTENT
+  );
+}
+
+async function test_url_bar_url(aDesc) {
+  await promiseURLBarFocus();
+
+  is(
+    gDOMWindowUtils.inputContextURI,
+    null,
+    `When the search bar has focus, input context URI should be null because of in chrome document (${aDesc})`
+  );
+}
+
+async function test_input_in_http_or_https(aIsHTTPS) {
+  await promiseURLBarFocus();
+
+  const scheme = aIsHTTPS ? "https" : "http";
+  const url = `${scheme}://example.com/browser/toolkit/content/tests/browser/file_empty.html`;
+  await BrowserTestUtils.withNewTab(url, async browser => {
+    ok(browser.isRemoteBrowser, "This test passes only in e10s mode");
+
+    await SpecialPowers.spawn(browser, [], async () => {
+      content.document.body.innerHTML = "<input>";
+      const input = content.document.querySelector("input");
+      input.focus();
+
+      // Wait for a tick for flushing IMEContentObserver's pending notifications.
+      await new Promise(resolve =>
+        content.requestAnimationFrame(() =>
+          content.requestAnimationFrame(resolve)
+        )
+      );
+    });
+
+    await promiseIMEStateEnabledByRemote();
+    if (!gDOMWindowUtils.inputContextURI) {
+      ok(
+        false,
+        `Input context should have valid URI when the scheme of focused tab's URL is ${scheme}`
+      );
+      return;
+    }
+    is(
+      gDOMWindowUtils.inputContextURI.spec,
+      url,
+      `Input context should have the document URI when the scheme of focused tab's URL is ${scheme}`
+    );
+  });
+}
+
+add_task(async () => {
+  await test_url_bar_url("first check");
+});
+add_task(async () => {
+  await test_input_in_http_or_https(true);
+});
+add_task(async () => {
+  await test_url_bar_url("check after remote content sets the URI");
+});
+add_task(async () => {
+  await test_input_in_http_or_https(false);
+});
+
+add_task(async function test_input_in_data() {
+  await BrowserTestUtils.withNewTab("data:text/html,<input>", async browser => {
+    ok(browser.isRemoteBrowser, "This test passes only in e10s mode");
+
+    await SpecialPowers.spawn(browser, [], async () => {
+      const input = content.document.querySelector("input");
+      input.focus();
+
+      // Wait for a tick for flushing IMEContentObserver's pending notifications.
+      await new Promise(resolve =>
+        content.requestAnimationFrame(() =>
+          content.requestAnimationFrame(resolve)
+        )
+      );
+    });
+
+    await promiseIMEStateEnabledByRemote();
+    is(
+      gDOMWindowUtils.inputContextURI,
+      null,
+      "Input context should not have data URI"
+    );
+  });
+});
+
+add_task(async function test_omit_private_things_in_URL() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["network.auth.confirmAuth.enabled", false]],
+  });
+  await promiseURLBarFocus();
+
+  await BrowserTestUtils.withNewTab(
+    "https://username:password@example.com/browser/toolkit/content/tests/browser/file_empty.html?query=some#ref",
+    async browser => {
+      ok(browser.isRemoteBrowser, "This test passes only in e10s mode");
+
+      await SpecialPowers.spawn(browser, [], async () => {
+        content.document.body.innerHTML = "<input>";
+        const input = content.document.querySelector("input");
+        input.focus();
+
+        // Wait for a tick for flushing IMEContentObserver's pending notifications.
+        await new Promise(resolve =>
+          content.requestAnimationFrame(() =>
+            content.requestAnimationFrame(resolve)
+          )
+        );
+      });
+
+      await promiseIMEStateEnabledByRemote();
+      if (!gDOMWindowUtils.inputContextURI) {
+        ok(
+          false,
+          `Input context should have valid URI even when the URL contains some private things`
+        );
+        return;
+      }
+      is(
+        gDOMWindowUtils.inputContextURI.spec,
+        "https://example.com/browser/toolkit/content/tests/browser/file_empty.html",
+        `Input context should have the document URI which omit some private things in the URL`
+      );
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_clipboard_contextmenu.js b/widget/tests/browser/browser_test_clipboard_contextmenu.js
new file mode 100644
index 0000000000..4d268d5be4
--- /dev/null
+++ b/widget/tests/browser/browser_test_clipboard_contextmenu.js
@@ -0,0 +1,127 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+const clipboard = SpecialPowers.Services.clipboard;
+const clipboardTypes = [
+  clipboard.kGlobalClipboard,
+  clipboard.kSelectionClipboard,
+  clipboard.kFindClipboard,
+  clipboard.kSelectionCache,
+];
+const supportedClipboardTypes = clipboardTypes.filter(type =>
+  clipboard.isClipboardTypeSupported(type)
+);
+
+const kPasteMenuPopupId = "clipboardReadPasteMenuPopup";
+const kPasteMenuItemId = "clipboardReadPasteMenuItem";
+
+function waitForPasteMenuPopupEvent(aEventSuffix) {
+  // The element with id `kPasteMenuPopupId` is inserted dynamically, hence
+  // calling `BrowserTestUtils.waitForEvent` instead of
+  // `BrowserTestUtils.waitForPopupEvent`.
+  return BrowserTestUtils.waitForEvent(
+    document,
+    "popup" + aEventSuffix,
+    false /* capture */,
+    e => {
+      return e.target.getAttribute("id") == kPasteMenuPopupId;
+    }
+  );
+}
+
+async function waitForPasteContextMenu() {
+  await waitForPasteMenuPopupEvent("shown");
+  const pasteButton = document.getElementById(kPasteMenuItemId);
+  info("Wait for paste button enabled");
+  await BrowserTestUtils.waitForMutationCondition(
+    pasteButton,
+    { attributeFilter: ["disabled"] },
+    () => !pasteButton.disabled,
+    "Wait for paste button enabled"
+  );
+}
+
+function promiseClickPasteButton() {
+  info("Wait for clicking paste contextmenu");
+  const pasteButton = document.getElementById(kPasteMenuItemId);
+  let promise = BrowserTestUtils.waitForEvent(pasteButton, "click");
+  EventUtils.synthesizeMouseAtCenter(pasteButton, {});
+  return promise;
+}
+
+async function clipboardAsyncGetData(aBrowser, aClipboardType) {
+  await SpecialPowers.spawn(aBrowser, [aClipboardType], async type => {
+    return new Promise((resolve, reject) => {
+      SpecialPowers.Services.clipboard.asyncGetData(
+        ["text/plain"],
+        type,
+        content.browsingContext.currentWindowContext,
+        content.document.nodePrincipal,
+        {
+          QueryInterface: SpecialPowers.ChromeUtils.generateQI([
+            "nsIAsyncClipboardGetCallback",
+          ]),
+          // nsIAsyncClipboardGetCallback
+          onSuccess: aAsyncGetClipboardData => {
+            resolve();
+          },
+          onError: aResult => {
+            reject(aResult);
+          },
+        }
+      );
+    });
+  });
+}
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      // Avoid paste button delay enabling making test too long.
+      ["security.dialog_enable_delay", 0],
+    ],
+  });
+});
+
+supportedClipboardTypes.forEach(type => {
+  add_task(async function test_clipboard_contextmenu() {
+    await BrowserTestUtils.withNewTab(
+      "https://example.com",
+      async function (browser) {
+        info(`Test clipboard contextmenu for clipboard type ${type}`);
+        let pasteContextMenuPromise = waitForPasteContextMenu();
+        const asyncRead = clipboardAsyncGetData(browser, type);
+        await pasteContextMenuPromise;
+
+        // We don't allow requests for different clipboard type to be
+        // consolidated, so when the context menu is shown for a specific
+        // clipboard type and has not yet got user response, any new requests
+        // for a different type should be rejected.
+        info(
+          "Test other clipboard types before interact with paste contextmenu"
+        );
+        for (let otherType of supportedClipboardTypes) {
+          if (type == otherType) {
+            continue;
+          }
+
+          info(`Test other clipboard type ${otherType}`);
+          await Assert.rejects(
+            clipboardAsyncGetData(browser, otherType),
+            ex => ex == Cr.NS_ERROR_DOM_NOT_ALLOWED_ERR,
+            `Request for clipboard type ${otherType} should be rejected`
+          );
+        }
+
+        await promiseClickPasteButton();
+        try {
+          await asyncRead;
+          ok(true, `nsIClipboard.asyncGetData() should success`);
+        } catch (e) {
+          ok(false, `nsIClipboard.asyncGetData() should not fail with ${e}`);
+        }
+      }
+    );
+  });
+});
diff --git a/widget/tests/browser/browser_test_clipboardcache.js b/widget/tests/browser/browser_test_clipboardcache.js
new file mode 100644
index 0000000000..8cb6adb8b5
--- /dev/null
+++ b/widget/tests/browser/browser_test_clipboardcache.js
@@ -0,0 +1,137 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+// Note: widget/tests/test_bug1123480.xhtml checks whether nsTransferable behaves
+// as expected with regards to private browsing mode and the clipboard cache,
+// i.e. that the clipboard is not cached to the disk when private browsing mode
+// is enabled.
+//
+// This test tests that the clipboard is not cached to the disk by IPC,
+// as a regression test for bug 1396224.
+// It indirectly uses nsTransferable, via the async navigator.clipboard API.
+
+// Create over 1 MB of sample garbage text. JavaScript strings are represented
+// by UTF16 strings, so the size is twice as much as the actual string length.
+// This value is chosen such that the size of the memory for the string exceeds
+// the kLargeDatasetSize threshold in nsTransferable.h.
+// It is also not a round number to reduce the odds of having an accidental
+// collisions with another file (since the test below looks at the file size
+// to identify the file).
+var Ipsum = "0123456789".repeat(1234321);
+var IpsumByteLength = Ipsum.length * 2;
+var SHORT_STRING_NO_CACHE = "short string that will not be cached to the disk";
+
+// Get a list of open file descriptors that refer to a file with the same size
+// as the expected data (and assume that any mutations in file descriptor counts
+// are caused by our test).
+// TODO: This logic only counts file descriptors that are still open (e.g. when
+// data persists after a copy). It does not detect cache files that exist only
+// temporarily (e.g. after a paste).
+function getClipboardCacheFDCount() {
+  let dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
+  if (AppConstants.platform === "win") {
+    // On Windows, nsAnonymousTemporaryFile does not immediately delete a file.
+    // Instead, the Windows-specific FILE_FLAG_DELETE_ON_CLOSE flag is used,
+    // which means that the file is deleted when the last handle is closed.
+    // Apparently, this flag is unreliable (e.g. when the application crashes),
+    // so nsAnonymousTemporaryFile stores the temporary files in a subdirectory,
+    // which is cleaned up some time after start-up.
+
+    // This is just a test, and during the test we deterministically close the
+    // handles, so if FILE_FLAG_DELETE_ON_CLOSE does the thing it promises, the
+    // file is actually removed when the handle is closed.
+
+    // Path from nsAnonymousTemporaryFile.cpp, GetTempDir.
+    dir.initWithPath(PathUtils.join(PathUtils.tempDir, "mozilla-temp-files"));
+  } else {
+    dir.initWithPath("/dev/fd");
+  }
+  let count = 0;
+  for (let fdFile of dir.directoryEntries) {
+    let fileSize;
+    try {
+      fileSize = fdFile.fileSize;
+    } catch (e) {
+      // This can happen on macOS.
+      continue;
+    }
+    if (fileSize === IpsumByteLength) {
+      // Assume that the file was created by us if the size matches.
+      ++count;
+    }
+  }
+  return count;
+}
+
+async function testCopyPaste(isPrivate) {
+  let win = await BrowserTestUtils.openNewBrowserWindow({ private: isPrivate });
+  let tab = await BrowserTestUtils.openNewForegroundTab(win);
+  let browser = tab.linkedBrowser;
+
+  // Sanitize environment
+  await ContentTask.spawn(browser, SHORT_STRING_NO_CACHE, async shortStr => {
+    await content.navigator.clipboard.writeText(shortStr);
+  });
+
+  let initialFdCount = getClipboardCacheFDCount();
+
+  await SpecialPowers.spawn(browser, [Ipsum], async largeString => {
+    await content.navigator.clipboard.writeText(largeString);
+  });
+
+  let fdCountAfterCopy = getClipboardCacheFDCount();
+  if (isPrivate) {
+    is(fdCountAfterCopy, initialFdCount, "Private write");
+  } else {
+    is(fdCountAfterCopy, initialFdCount + 1, "Cached write");
+  }
+
+  let readStr = await SpecialPowers.spawn(browser, [], async () => {
+    let { document } = content;
+    document.body.contentEditable = true;
+    document.body.focus();
+    let pastePromise = new Promise(resolve => {
+      document.addEventListener(
+        "paste",
+        e => {
+          resolve(e.clipboardData.getData("text/plain"));
+        },
+        { once: true }
+      );
+    });
+    document.execCommand("paste");
+    return pastePromise;
+  });
+  ok(readStr === Ipsum, "Read what we pasted");
+
+  if (isPrivate) {
+    is(getClipboardCacheFDCount(), fdCountAfterCopy, "Private read");
+  } else {
+    // Upon reading from the clipboard, a temporary nsTransferable is used, for
+    // which the cache is disabled. The content process does not cache clipboard
+    // data either. So the file descriptor count should be identical.
+    is(getClipboardCacheFDCount(), fdCountAfterCopy, "Read not cached");
+  }
+
+  // Cleanup.
+  await SpecialPowers.spawn(
+    browser,
+    [SHORT_STRING_NO_CACHE],
+    async shortStr => {
+      await content.navigator.clipboard.writeText(shortStr);
+    }
+  );
+  is(getClipboardCacheFDCount(), initialFdCount, "Drop clipboard cache if any");
+
+  BrowserTestUtils.removeTab(tab);
+  await BrowserTestUtils.closeWindow(win);
+}
+
+add_task(async function test_private() {
+  await testCopyPaste(true);
+});
+
+add_task(async function test_non_private() {
+  await testCopyPaste(false);
+});
diff --git a/widget/tests/browser/browser_test_fullscreen_size.js b/widget/tests/browser/browser_test_fullscreen_size.js
new file mode 100644
index 0000000000..dace46603c
--- /dev/null
+++ b/widget/tests/browser/browser_test_fullscreen_size.js
@@ -0,0 +1,66 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+function waitForReflow(aWindow) {
+  return new Promise(resolve => {
+    aWindow.requestAnimationFrame(() => {
+      aWindow.requestAnimationFrame(resolve);
+    });
+  });
+}
+
+add_task(async function fullscreen_size() {
+  let win = await BrowserTestUtils.openNewBrowserWindow({});
+  win.gBrowser.selectedBrowser.focus();
+
+  info("Enter browser fullscreen mode");
+  let promise = Promise.all([
+    BrowserTestUtils.waitForEvent(win, "fullscreen"),
+    BrowserTestUtils.waitForEvent(win, "resize"),
+  ]);
+  win.fullScreen = true;
+  await promise;
+
+  info("Await reflow of the chrome window");
+  await waitForReflow(win);
+
+  is(win.innerHeight, win.outerHeight, "Check height");
+  is(win.innerWidth, win.outerWidth, "Check width");
+
+  await BrowserTestUtils.closeWindow(win);
+});
+
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1830721
+add_task(async function fullscreen_size_moz_appearance() {
+  const win = await BrowserTestUtils.openNewBrowserWindow({});
+  win.gBrowser.selectedBrowser.focus();
+
+  info("Add -moz-appearance style to chrome document");
+  const style = win.document.createElement("style");
+  style.innerHTML = `
+    #main-window {
+      -moz-appearance: button;
+    }
+  `;
+  win.document.head.appendChild(style);
+
+  info("Await reflow of the chrome window");
+  await waitForReflow(win);
+
+  info("Enter browser fullscreen mode");
+  let promise = Promise.all([
+    BrowserTestUtils.waitForEvent(win, "fullscreen"),
+    BrowserTestUtils.waitForEvent(win, "resize"),
+  ]);
+  win.fullScreen = true;
+  await promise;
+
+  info("Await reflow of the chrome window");
+  await waitForReflow(win);
+
+  is(win.innerHeight, win.outerHeight, "Check height");
+  is(win.innerWidth, win.outerWidth, `Check width`);
+
+  await BrowserTestUtils.closeWindow(win);
+});
diff --git a/widget/tests/browser/browser_test_ime_state_in_contenteditable_on_focus_move_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_in_contenteditable_on_focus_move_in_remote_content.js
new file mode 100644
index 0000000000..50b19f0cc3
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_in_contenteditable_on_focus_move_in_remote_content.js
@@ -0,0 +1,122 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_on_focus_move.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_on_focus_move.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      // isnot is used in file_test_ime_state_on_focus_move.js, but it's not
+      // defined as the alias of Assert.notEqual in browser-chrome tests.
+      // Therefore, we need to define it here.
+      // eslint-disable-next-line no-unused-vars
+      const isnot = Assert.notEqual;
+
+      async function runIMEStateOnFocusMoveTests(aDescription) {
+        await (async function test_IMEState_without_focused_element() {
+          const checker = new IMEStateWhenNoActiveElementTester(aDescription);
+          const expectedData = await SpecialPowers.spawn(
+            browser,
+            [aDescription],
+            description => {
+              const runner =
+                content.wrappedJSObject.createIMEStateWhenNoActiveElementTester(
+                  description
+                );
+              return runner.run(content.document, content.window);
+            }
+          );
+          checker.check(expectedData);
+        })();
+        for (
+          let index = 0;
+          index < IMEStateOnFocusMoveTester.numberOfTests;
+          ++index
+        ) {
+          const checker = new IMEStateOnFocusMoveTester(aDescription, index);
+          const expectedData = await SpecialPowers.spawn(
+            browser,
+            [aDescription, index],
+            (description, aIndex) => {
+              content.wrappedJSObject.runner =
+                content.wrappedJSObject.createIMEStateOnFocusMoveTester(
+                  description,
+                  aIndex,
+                  content.window
+                );
+              return content.wrappedJSObject.runner.prepareToRun(
+                content.document.querySelector("div")
+              );
+            }
+          );
+          checker.prepareToCheck(expectedData, tipWrapper);
+          await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.run();
+          });
+          checker.check(expectedData);
+
+          if (checker.canTestOpenCloseState(expectedData)) {
+            for (const defaultOpenState of [false, true]) {
+              const expectedOpenStateData = await SpecialPowers.spawn(
+                browser,
+                [],
+                () => {
+                  return content.wrappedJSObject.runner.prepareToRunOpenCloseTest(
+                    content.document.querySelector("div")
+                  );
+                }
+              );
+              checker.prepareToCheckOpenCloseTest(
+                defaultOpenState,
+                expectedOpenStateData
+              );
+              await SpecialPowers.spawn(browser, [], () => {
+                return content.wrappedJSObject.runner.runOpenCloseTest();
+              });
+              checker.checkOpenCloseTest(expectedOpenStateData);
+            }
+          }
+          await SpecialPowers.spawn(browser, [], () => {
+            content.wrappedJSObject.runner.destroy();
+            content.wrappedJSObject.runner = undefined;
+          });
+          checker.destroy();
+        } // for loop iterating test of IMEStateOnFocusMoveTester
+      } // definition of runIMEStateOnFocusMoveTests
+
+      // test for contentEditable="true"
+      await SpecialPowers.spawn(browser, [], async () => {
+        content.document
+          .querySelector("div")
+          .setAttribute("contenteditable", "true");
+      });
+      await runIMEStateOnFocusMoveTests("in div[contenteditable]");
+
+      // test for contentEditable="false"
+      await SpecialPowers.spawn(browser, [], async () => {
+        content.document
+          .querySelector("div")
+          .setAttribute("contenteditable", "false");
+      });
+      await runIMEStateOnFocusMoveTests('in div[contenteditable="false"]');
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_in_contenteditable_on_readonly_change_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_in_contenteditable_on_readonly_change_in_remote_content.js
new file mode 100644
index 0000000000..33217d1d2c
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_in_contenteditable_on_readonly_change_in_remote_content.js
@@ -0,0 +1,261 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_in_contenteditable_on_readonly_change.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_in_contenteditable_on_readonly_change.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      await (async function test_ime_state_in_contenteditable_on_readonly_change() {
+        const expectedDataOfInitialization = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            content.document.body.innerHTML = "<div contenteditable><br></div>";
+            content.wrappedJSObject.runner =
+              content.wrappedJSObject.createIMEStateInContentEditableOnReadonlyChangeTester();
+            const editingHost = content.document.querySelector(
+              "div[contenteditable]"
+            );
+            return content.wrappedJSObject.runner.prepareToRun(
+              editingHost,
+              editingHost,
+              content.window
+            );
+          }
+        );
+        const tester = new IMEStateInContentEditableOnReadonlyChangeTester();
+        tester.checkResultOfPreparation(
+          expectedDataOfInitialization,
+          window,
+          tipWrapper
+        );
+        const expectedDataOfReadonly = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            return content.wrappedJSObject.runner.runToMakeHTMLEditorReadonly();
+          }
+        );
+        tester.checkResultOfMakingHTMLEditorReadonly(expectedDataOfReadonly);
+        const expectedDataOfEditable = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            return content.wrappedJSObject.runner.runToMakeHTMLEditorEditable();
+          }
+        );
+        tester.checkResultOfMakingHTMLEditorEditable(expectedDataOfEditable);
+        const expectedDataOfFinalization = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            return content.wrappedJSObject.runner.runToRemoveContentEditableAttribute();
+          }
+        );
+        tester.checkResultOfRemovingContentEditableAttribute(
+          expectedDataOfFinalization
+        );
+        tester.clear();
+      })();
+
+      await (async function test_ime_state_in_button_in_contenteditable_on_readonly_change() {
+        const expectedDataOfInitialization = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            content.document.body.innerHTML =
+              "<div contenteditable><br><button>button</button></div>";
+            content.wrappedJSObject.runner =
+              content.wrappedJSObject.createIMEStateInContentEditableOnReadonlyChangeTester();
+            const editingHost = content.document.querySelector(
+              "div[contenteditable]"
+            );
+            return content.wrappedJSObject.runner.prepareToRun(
+              editingHost,
+              editingHost.querySelector("button"),
+              content.window
+            );
+          }
+        );
+        const tester = new IMEStateInContentEditableOnReadonlyChangeTester();
+        tester.checkResultOfPreparation(
+          expectedDataOfInitialization,
+          window,
+          tipWrapper
+        );
+        const expectedDataOfReadonly = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            return content.wrappedJSObject.runner.runToMakeHTMLEditorReadonly();
+          }
+        );
+        tester.checkResultOfMakingHTMLEditorReadonly(expectedDataOfReadonly);
+        const expectedDataOfEditable = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            return content.wrappedJSObject.runner.runToMakeHTMLEditorEditable();
+          }
+        );
+        tester.checkResultOfMakingHTMLEditorEditable(expectedDataOfEditable);
+        const expectedDataOfFinalization = await SpecialPowers.spawn(
+          browser,
+          [],
+          () => {
+            return content.wrappedJSObject.runner.runToRemoveContentEditableAttribute();
+          }
+        );
+        tester.checkResultOfRemovingContentEditableAttribute(
+          expectedDataOfFinalization
+        );
+        tester.clear();
+      })();
+
+      await (async function test_ime_state_of_text_controls_in_contenteditable_on_readonly_change() {
+        const tester =
+          new IMEStateOfTextControlInContentEditableOnReadonlyChangeTester();
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.body.innerHTML = "<div contenteditable></div>";
+          content.wrappedJSObject.runner =
+            content.wrappedJSObject.createIMEStateOfTextControlInContentEditableOnReadonlyChangeTester();
+        });
+        for (
+          let index = 0;
+          index <
+          IMEStateOfTextControlInContentEditableOnReadonlyChangeTester.numberOfTextControlTypes;
+          index++
+        ) {
+          const expectedDataOfInitialization = await SpecialPowers.spawn(
+            browser,
+            [index],
+            aIndex => {
+              const editingHost = content.document.querySelector("div");
+              return content.wrappedJSObject.runner.prepareToRun(
+                aIndex,
+                editingHost,
+                content.window
+              );
+            }
+          );
+          tester.checkResultOfPreparation(
+            expectedDataOfInitialization,
+            window,
+            tipWrapper
+          );
+          const expectedDataOfMakingParentEditingHost =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeParentEditingHost();
+            });
+          tester.checkResultOfMakingParentEditingHost(
+            expectedDataOfMakingParentEditingHost
+          );
+          const expectedDataOfMakingHTMLEditorReadonly =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeHTMLEditorReadonly();
+            });
+          tester.checkResultOfMakingHTMLEditorReadonly(
+            expectedDataOfMakingHTMLEditorReadonly
+          );
+          const expectedDataOfMakingHTMLEditorEditable =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeHTMLEditorEditable();
+            });
+          tester.checkResultOfMakingHTMLEditorEditable(
+            expectedDataOfMakingHTMLEditorEditable
+          );
+          const expectedDataOfMakingParentNonEditable =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeParentNonEditingHost();
+            });
+          tester.checkResultOfMakingParentNonEditable(
+            expectedDataOfMakingParentNonEditable
+          );
+          tester.clear();
+        }
+      })();
+
+      await (async function test_ime_state_outside_contenteditable_on_readonly_change() {
+        const tester =
+          new IMEStateOutsideContentEditableOnReadonlyChangeTester();
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.body.innerHTML = "<div contenteditable></div>";
+          content.wrappedJSObject.runner =
+            content.wrappedJSObject.createIMEStateOutsideContentEditableOnReadonlyChangeTester();
+        });
+        for (
+          let index = 0;
+          index <
+          IMEStateOutsideContentEditableOnReadonlyChangeTester.numberOfFocusTargets;
+          index++
+        ) {
+          const expectedDataOfInitialization = await SpecialPowers.spawn(
+            browser,
+            [index],
+            aIndex => {
+              const editingHost = content.document.querySelector("div");
+              return content.wrappedJSObject.runner.prepareToRun(
+                aIndex,
+                editingHost,
+                content.window
+              );
+            }
+          );
+          tester.checkResultOfPreparation(
+            expectedDataOfInitialization,
+            window,
+            tipWrapper
+          );
+          const expectedDataOfMakingParentEditingHost =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeParentEditingHost();
+            });
+          tester.checkResultOfMakingParentEditingHost(
+            expectedDataOfMakingParentEditingHost
+          );
+          const expectedDataOfMakingHTMLEditorReadonly =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeHTMLEditorReadonly();
+            });
+          tester.checkResultOfMakingHTMLEditorReadonly(
+            expectedDataOfMakingHTMLEditorReadonly
+          );
+          const expectedDataOfMakingHTMLEditorEditable =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeHTMLEditorEditable();
+            });
+          tester.checkResultOfMakingHTMLEditorEditable(
+            expectedDataOfMakingHTMLEditorEditable
+          );
+          const expectedDataOfMakingParentNonEditable =
+            await SpecialPowers.spawn(browser, [], () => {
+              return content.wrappedJSObject.runner.runToMakeParentNonEditingHost();
+            });
+          tester.checkResultOfMakingParentNonEditable(
+            expectedDataOfMakingParentNonEditable
+          );
+          tester.clear();
+        }
+      })();
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_in_designMode_on_focus_move_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_in_designMode_on_focus_move_in_remote_content.js
new file mode 100644
index 0000000000..5ea5990e96
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_in_designMode_on_focus_move_in_remote_content.js
@@ -0,0 +1,116 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_on_focus_move.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_on_focus_move.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      // isnot is used in file_test_ime_state_on_focus_move.js, but it's not
+      // defined as the alias of Assert.notEqual in browser-chrome tests.
+      // Therefore, we need to define it here.
+      // eslint-disable-next-line no-unused-vars
+      const isnot = Assert.notEqual;
+
+      async function runIMEStateOnFocusMoveTests(aDescription) {
+        await (async function test_IMEState_without_focused_element() {
+          const checker = new IMEStateWhenNoActiveElementTester(aDescription);
+          const expectedData = await SpecialPowers.spawn(
+            browser,
+            [aDescription],
+            description => {
+              const runner =
+                content.wrappedJSObject.createIMEStateWhenNoActiveElementTester(
+                  description
+                );
+              return runner.run(content.document, content.window);
+            }
+          );
+          checker.check(expectedData);
+        })();
+        for (
+          let index = 0;
+          index < IMEStateOnFocusMoveTester.numberOfTests;
+          ++index
+        ) {
+          const checker = new IMEStateOnFocusMoveTester(aDescription, index);
+          const expectedData = await SpecialPowers.spawn(
+            browser,
+            [aDescription, index],
+            (description, aIndex) => {
+              content.wrappedJSObject.runner =
+                content.wrappedJSObject.createIMEStateOnFocusMoveTester(
+                  description,
+                  aIndex,
+                  content.window
+                );
+              return content.wrappedJSObject.runner.prepareToRun(
+                content.document.querySelector("div")
+              );
+            }
+          );
+          checker.prepareToCheck(expectedData, tipWrapper);
+          await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.run();
+          });
+          checker.check(expectedData);
+
+          if (checker.canTestOpenCloseState(expectedData)) {
+            for (const defaultOpenState of [false, true]) {
+              const expectedOpenStateData = await SpecialPowers.spawn(
+                browser,
+                [],
+                () => {
+                  return content.wrappedJSObject.runner.prepareToRunOpenCloseTest(
+                    content.document.querySelector("div")
+                  );
+                }
+              );
+              checker.prepareToCheckOpenCloseTest(
+                defaultOpenState,
+                expectedOpenStateData
+              );
+              await SpecialPowers.spawn(browser, [], () => {
+                return content.wrappedJSObject.runner.runOpenCloseTest();
+              });
+              checker.checkOpenCloseTest(expectedOpenStateData);
+            }
+          }
+          await SpecialPowers.spawn(browser, [], () => {
+            content.wrappedJSObject.runner.destroy();
+            content.wrappedJSObject.runner = undefined;
+          });
+          checker.destroy();
+        } // for loop iterating test of IMEStateOnFocusMoveTester
+      } // definition of runIMEStateOnFocusMoveTests
+
+      // test designMode
+      await SpecialPowers.spawn(browser, [], async () => {
+        content.document.designMode = "on";
+      });
+      await runIMEStateOnFocusMoveTests('in designMode="on"');
+      await SpecialPowers.spawn(browser, [], async () => {
+        content.document.designMode = "off";
+      });
+      await runIMEStateOnFocusMoveTests('in designMode="off"');
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_in_plugin_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_in_plugin_in_remote_content.js
new file mode 100644
index 0000000000..0862b51080
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_in_plugin_in_remote_content.js
@@ -0,0 +1,120 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/toolkit/content/tests/browser/file_empty.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.wrappedJSObject.waitForIMEContentObserverSendingNotifications =
+          () => {
+            return new content.window.Promise(resolve =>
+              content.window.requestAnimationFrame(() =>
+                content.window.requestAnimationFrame(resolve)
+              )
+            );
+          };
+        content.document.body.innerHTML =
+          '<input><object type="application/x-test"></object>';
+      });
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.activeElement?.blur();
+        return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+      });
+      is(
+        window.windowUtils.IMEStatus,
+        Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+        "IME enabled state should be disabled when no element has focus"
+      );
+      ok(
+        !tipWrapper.IMEHasFocus,
+        "IME should not have focus when no element has focus"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.querySelector("object").focus();
+        return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+      });
+      is(
+        window.windowUtils.IMEStatus,
+        Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+        "IME enabled state should be disabled when an <object> for plugin has focus"
+      );
+      ok(
+        !tipWrapper.IMEHasFocus,
+        "IME enabled state should not have focus when an <object> for plugin has focus"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.querySelector("object").blur();
+        return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+      });
+      is(
+        window.windowUtils.IMEStatus,
+        Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+        "IME enabled state should be disabled when an <object> for plugin gets blurred"
+      );
+      ok(
+        !tipWrapper.IMEHasFocus,
+        "IME should not have focus when an <object> for plugin gets blurred"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.querySelector("object").focus();
+        return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+      });
+      is(
+        window.windowUtils.IMEStatus,
+        Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+        "IME enabled state should be disabled when an <object> for plugin gets focused again"
+      );
+      ok(
+        !tipWrapper.IMEHasFocus,
+        "IME should not have focus when an <object> for plugin gets focused again"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.querySelector("object").remove();
+        return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+      });
+      is(
+        window.windowUtils.IMEStatus,
+        Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+        "IME enabled state should be disabled when focused <object> for plugin is removed from the document"
+      );
+      ok(
+        !tipWrapper.IMEHasFocus,
+        "IME should not have focus when focused <object> for plugin is removed from the document"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.document.querySelector("input").focus();
+        return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+      });
+      is(
+        window.windowUtils.IMEStatus,
+        Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+        "IME enabled state should be enabled after <input> gets focus"
+      );
+      ok(
+        tipWrapper.IMEHasFocus,
+        "IME should have focus after <input> gets focus"
+      );
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_in_text_control_on_reframe_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_in_text_control_on_reframe_in_remote_content.js
new file mode 100644
index 0000000000..4d8acab1ff
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_in_text_control_on_reframe_in_remote_content.js
@@ -0,0 +1,78 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_in_text_control_on_reframe.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_in_text_control_on_reframe.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      await (async function test_ime_state_outside_contenteditable_on_readonly_change() {
+        const tester = new IMEStateInTextControlOnReframeTester();
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.body.innerHTML = "<div contenteditable></div>";
+          content.wrappedJSObject.runner =
+            content.wrappedJSObject.createIMEStateInTextControlOnReframeTester();
+        });
+        for (
+          let index = 0;
+          index < IMEStateInTextControlOnReframeTester.numberOfTextControlTypes;
+          index++
+        ) {
+          tipWrapper.clearFocusBlurNotifications();
+          const expectedData1 = await SpecialPowers.spawn(
+            browser,
+            [index],
+            aIndex => {
+              return content.wrappedJSObject.runner.prepareToRun(
+                aIndex,
+                content.document,
+                content.window
+              );
+            }
+          );
+          tipWrapper.typeA();
+          await SpecialPowers.spawn(browser, [], () => {
+            return new Promise(resolve =>
+              content.window.requestAnimationFrame(() =>
+                content.window.requestAnimationFrame(resolve)
+              )
+            );
+          });
+          tester.checkResultAfterTypingA(expectedData1, window, tipWrapper);
+
+          const expectedData2 = await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.prepareToRun2();
+          });
+          tipWrapper.typeA();
+          await SpecialPowers.spawn(browser, [], () => {
+            return new Promise(resolve =>
+              content.window.requestAnimationFrame(() =>
+                content.window.requestAnimationFrame(resolve)
+              )
+            );
+          });
+          tester.checkResultAfterTypingA2(expectedData2);
+          tester.clear();
+        }
+      })();
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_on_editable_state_change_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_on_editable_state_change_in_remote_content.js
new file mode 100644
index 0000000000..8c38f97b72
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_on_editable_state_change_in_remote_content.js
@@ -0,0 +1,297 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/toolkit/content/tests/browser/file_empty.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      await SpecialPowers.spawn(browser, [], () => {
+        content.wrappedJSObject.waitForIMEContentObserverSendingNotifications =
+          () => {
+            return new content.window.Promise(resolve =>
+              content.window.requestAnimationFrame(() =>
+                content.window.requestAnimationFrame(resolve)
+              )
+            );
+          };
+        content.wrappedJSObject.resetIMEStateWithFocusMove = () => {
+          const input = content.document.createElement("input");
+          content.document.body.appendChild(input);
+          input.focus();
+          input.remove();
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        };
+        content.document.body.innerHTML = "<div></div>";
+      });
+
+      function resetIMEStateWithFocusMove() {
+        return SpecialPowers.spawn(browser, [], () => {
+          const input = content.document.createElement("input");
+          content.document.body.appendChild(input);
+          input.focus();
+          input.remove();
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+      }
+
+      await (async function test_setting_contenteditable_of_focused_div() {
+        await SpecialPowers.spawn(browser, [], () => {
+          const div = content.document.querySelector("div");
+          div.setAttribute("tabindex", "0");
+          div.focus();
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          "test_setting_contenteditable_of_focused_div: IME should be disabled when non-editable <div> has focus"
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .querySelector("div")
+            .setAttribute("contenteditable", "");
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+          "test_setting_contenteditable_of_focused_div: IME should be enabled when contenteditable of focused <div> is set"
+        );
+        ok(
+          tipWrapper.IMEHasFocus,
+          "test_setting_contenteditable_of_focused_div: IME should have focus when contenteditable of focused <div> is set"
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document
+            .querySelector("div")
+            .removeAttribute("contenteditable");
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          "test_setting_contenteditable_of_focused_div: IME should be disabled when contenteditable of focused <div> is removed"
+        );
+        ok(
+          !tipWrapper.IMEHasFocus,
+          "test_setting_contenteditable_of_focused_div: IME should not have focus when contenteditable of focused <div> is removed"
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.querySelector("div").removeAttribute("tabindex");
+        });
+      })();
+
+      await resetIMEStateWithFocusMove();
+
+      await (async function test_removing_contenteditable_of_non_last_editable_div() {
+        await SpecialPowers.spawn(browser, [], async () => {
+          const div = content.document.querySelector("div");
+          div.setAttribute("tabindex", "0");
+          div.setAttribute("contenteditable", "");
+          const anotherEditableDiv = content.document.createElement("div");
+          anotherEditableDiv.setAttribute("contenteditable", "");
+          div.parentElement.appendChild(anotherEditableDiv);
+          div.focus();
+          await content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+          div.removeAttribute("contenteditable");
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          "test_removing_contenteditable_of_non_last_editable_div: IME should be disabled when contenteditable of focused <div> is removed"
+        );
+        ok(
+          !tipWrapper.IMEHasFocus,
+          "test_removing_contenteditable_of_non_last_editable_div: IME should not have focus when contenteditable of focused <div> is removed"
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          const divs = content.document.querySelectorAll("div");
+          divs[1].remove();
+          divs[0].removeAttribute("tabindex");
+        });
+      })();
+
+      await resetIMEStateWithFocusMove();
+
+      await (async function test_setting_designMode() {
+        await SpecialPowers.spawn(browser, [], () => {
+          content.window.focus();
+          content.document.designMode = "on";
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+          'test_setting_designMode: IME should be enabled when designMode is set to "on"'
+        );
+        ok(
+          tipWrapper.IMEHasFocus,
+          'test_setting_designMode: IME should have focus when designMode is set to "on"'
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.designMode = "off";
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          'test_setting_designMode: IME should be disabled when designMode is set to "off"'
+        );
+        ok(
+          !tipWrapper.IMEHasFocus,
+          'test_setting_designMode: IME should not have focus when designMode is set to "off"'
+        );
+      })();
+
+      await resetIMEStateWithFocusMove();
+
+      async function test_setting_content_editable_of_body_when_shadow_DOM_has_focus(
+        aMode
+      ) {
+        await SpecialPowers.spawn(browser, [aMode], mode => {
+          const div = content.document.querySelector("div");
+          const shadow = div.attachShadow({ mode });
+          content.wrappedJSObject.divInShadow =
+            content.document.createElement("div");
+          content.wrappedJSObject.divInShadow.setAttribute("tabindex", "0");
+          shadow.appendChild(content.wrappedJSObject.divInShadow);
+          content.wrappedJSObject.divInShadow.focus();
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          `test_setting_content_editable_of_body_when_shadow_DOM_has_focus(${aMode}): IME should be disabled when non-editable <div> in a shadow DOM has focus`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.body.setAttribute("contenteditable", "");
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        // todo_is because of bug 1807597.  Gecko does not update focus when focused
+        // element becomes an editable child.  Therefore, cannot initialize
+        // HTMLEditor with the new editing host.
+        todo_is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+          `test_setting_content_editable_of_body_when_shadow_DOM_has_focus(${aMode}): IME should be enabled when the <body> becomes editable`
+        );
+        todo(
+          tipWrapper.IMEHasFocus,
+          `test_setting_content_editable_of_body_when_shadow_DOM_has_focus(${aMode}): IME should have focus when the <body> becomes editable`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.body.removeAttribute("contenteditable");
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          `test_setting_content_editable_of_body_when_shadow_DOM_has_focus)${aMode}): IME should be disabled when the <body> becomes not editable`
+        );
+        ok(
+          !tipWrapper.IMEHasFocus,
+          `test_setting_content_editable_of_body_when_shadow_DOM_has_focus)${aMode}): IME should not have focus when the <body> becomes not editable`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.querySelector("div").remove();
+          content.document.body.appendChild(
+            content.document.createElement("div")
+          );
+        });
+      }
+
+      async function test_setting_designMode_when_shadow_DOM_has_focus(aMode) {
+        await SpecialPowers.spawn(browser, [aMode], mode => {
+          const div = content.document.querySelector("div");
+          const shadow = div.attachShadow({ mode });
+          content.wrappedJSObject.divInShadow =
+            content.document.createElement("div");
+          content.wrappedJSObject.divInShadow.setAttribute("tabindex", "0");
+          shadow.appendChild(content.wrappedJSObject.divInShadow);
+          content.wrappedJSObject.divInShadow.focus();
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should be disabled when non-editable <div> in a shadow DOM has focus`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.designMode = "on";
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should stay disabled when designMode is set`
+        );
+        ok(
+          !tipWrapper.IMEHasFocus,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should not have focus when designMode is set`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.wrappedJSObject.divInShadow.setAttribute(
+            "contenteditable",
+            ""
+          );
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        // todo_is because of bug 1807597.  Gecko does not update focus when focused
+        // document is into the design mode.  Therefore, cannot initialize
+        // HTMLEditor with the document node properly.
+        todo_is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should be enabled when focused <div> in a shadow DOM becomes editable`
+        );
+        todo(
+          tipWrapper.IMEHasFocus,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should have focus when focused <div> in a shadow DOM becomes editable`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.designMode = "off";
+          return content.wrappedJSObject.waitForIMEContentObserverSendingNotifications();
+        });
+        is(
+          window.windowUtils.IMEStatus,
+          Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should be disabled when designMode is unset`
+        );
+        ok(
+          !tipWrapper.IMEHasFocus,
+          `test_setting_designMode_when_shadow_DOM_has_focus(${aMode}): IME should not have focus when designMode is unset`
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          content.document.querySelector("div").remove();
+          content.document.body.appendChild(
+            content.document.createElement("div")
+          );
+        });
+      }
+
+      for (const mode of ["open", "closed"]) {
+        await test_setting_content_editable_of_body_when_shadow_DOM_has_focus(
+          mode
+        );
+        await resetIMEStateWithFocusMove();
+        await test_setting_designMode_when_shadow_DOM_has_focus(mode);
+        await resetIMEStateWithFocusMove();
+      }
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_on_focus_move_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_on_focus_move_in_remote_content.js
new file mode 100644
index 0000000000..3916d3d47c
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_on_focus_move_in_remote_content.js
@@ -0,0 +1,128 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_on_focus_move.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_on_focus_move.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      // isnot is used in file_test_ime_state_on_focus_move.js, but it's not
+      // defined as the alias of Assert.notEqual in browser-chrome tests.
+      // Therefore, we need to define it here.
+      // eslint-disable-next-line no-unused-vars
+      const isnot = Assert.notEqual;
+
+      async function runIMEStateOnFocusMoveTests(aDescription) {
+        await (async function test_IMEState_without_focused_element() {
+          const checker = new IMEStateWhenNoActiveElementTester(aDescription);
+          const expectedData = await SpecialPowers.spawn(
+            browser,
+            [aDescription],
+            description => {
+              const runner =
+                content.wrappedJSObject.createIMEStateWhenNoActiveElementTester(
+                  description
+                );
+              return runner.run(content.document, content.window);
+            }
+          );
+          checker.check(expectedData);
+        })();
+        for (
+          let index = 0;
+          index < IMEStateOnFocusMoveTester.numberOfTests;
+          ++index
+        ) {
+          const checker = new IMEStateOnFocusMoveTester(aDescription, index);
+          const expectedData = await SpecialPowers.spawn(
+            browser,
+            [aDescription, index],
+            (description, aIndex) => {
+              content.wrappedJSObject.runner =
+                content.wrappedJSObject.createIMEStateOnFocusMoveTester(
+                  description,
+                  aIndex,
+                  content.window
+                );
+              return content.wrappedJSObject.runner.prepareToRun(
+                content.document.querySelector("div")
+              );
+            }
+          );
+          checker.prepareToCheck(expectedData, tipWrapper);
+          await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.run();
+          });
+          checker.check(expectedData);
+
+          if (checker.canTestOpenCloseState(expectedData)) {
+            for (const defaultOpenState of [false, true]) {
+              const expectedOpenStateData = await SpecialPowers.spawn(
+                browser,
+                [],
+                () => {
+                  return content.wrappedJSObject.runner.prepareToRunOpenCloseTest(
+                    content.document.querySelector("div")
+                  );
+                }
+              );
+              checker.prepareToCheckOpenCloseTest(
+                defaultOpenState,
+                expectedOpenStateData
+              );
+              await SpecialPowers.spawn(browser, [], () => {
+                return content.wrappedJSObject.runner.runOpenCloseTest();
+              });
+              checker.checkOpenCloseTest(expectedOpenStateData);
+            }
+          }
+          await SpecialPowers.spawn(browser, [], () => {
+            content.wrappedJSObject.runner.destroy();
+            content.wrappedJSObject.runner = undefined;
+          });
+          checker.destroy();
+        } // for loop iterating test of IMEStateOnFocusMoveTester
+      } // definition of runIMEStateOnFocusMoveTests
+
+      // test for normal contents.
+      await runIMEStateOnFocusMoveTests("in non-editable container");
+
+      // test for removing contentEditable
+      await SpecialPowers.spawn(browser, [], async () => {
+        content.document
+          .querySelector("div")
+          .setAttribute("contenteditable", "true");
+        content.document.querySelector("div").focus();
+        await new Promise(resolve =>
+          content.window.requestAnimationFrame(() =>
+            content.window.requestAnimationFrame(resolve)
+          )
+        );
+        content.document
+          .querySelector("div")
+          .removeAttribute("contenteditable");
+      });
+      await runIMEStateOnFocusMoveTests(
+        "after removing contenteditable from the container"
+      );
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_on_input_type_change_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_on_input_type_change_in_remote_content.js
new file mode 100644
index 0000000000..2a4bc4c332
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_on_input_type_change_in_remote_content.js
@@ -0,0 +1,70 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_on_input_type_change.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_on_input_type_change.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      for (
+        let srcIndex = 0;
+        srcIndex < IMEStateOnInputTypeChangeTester.numberOfTests;
+        srcIndex++
+      ) {
+        const tester = new IMEStateOnInputTypeChangeTester(srcIndex);
+        for (
+          let destIndex = 0;
+          destIndex < IMEStateOnInputTypeChangeTester.numberOfTests;
+          destIndex++
+        ) {
+          const expectedResultBefore = await SpecialPowers.spawn(
+            browser,
+            [srcIndex, destIndex],
+            (aSrcIndex, aDestIndex) => {
+              content.wrappedJSObject.runner =
+                content.wrappedJSObject.createIMEStateOnInputTypeChangeTester(
+                  aSrcIndex
+                );
+              return content.wrappedJSObject.runner.prepareToRun(
+                aDestIndex,
+                content.window,
+                content.document.body
+              );
+            }
+          );
+          if (expectedResultBefore === false) {
+            continue;
+          }
+          tester.checkBeforeRun(expectedResultBefore, tipWrapper);
+          const expectedResult = await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.run();
+          });
+          tester.checkResult(expectedResultBefore, expectedResult);
+          await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.clear();
+          });
+          tipWrapper.clearFocusBlurNotifications();
+        }
+        tester.clear();
+      }
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_ime_state_on_readonly_change_in_remote_content.js b/widget/tests/browser/browser_test_ime_state_on_readonly_change_in_remote_content.js
new file mode 100644
index 0000000000..a0c0019328
--- /dev/null
+++ b/widget/tests/browser/browser_test_ime_state_on_readonly_change_in_remote_content.js
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_on_readonly_change.js */
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_ime_state_test_helper.js",
+  this
+);
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/widget/tests/browser/file_test_ime_state_on_readonly_change.js",
+  this
+);
+add_task(async function () {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/browser/widget/tests/browser/file_ime_state_tests.html",
+    async function (browser) {
+      const tipWrapper = new TIPWrapper(window);
+      ok(
+        tipWrapper.isAvailable(),
+        "TextInputProcessor should've been initialized"
+      );
+
+      const tester = new IMEStateOnReadonlyChangeTester();
+      for (
+        let i = 0;
+        i < IMEStateOnReadonlyChangeTester.numberOfTextControlTypes;
+        i++
+      ) {
+        const expectedResultBefore = await SpecialPowers.spawn(
+          browser,
+          [i],
+          aIndex => {
+            content.wrappedJSObject.runner =
+              content.wrappedJSObject.createIMEStateOnReadonlyChangeTester(
+                aIndex
+              );
+            return content.wrappedJSObject.runner.prepareToRun(
+              aIndex,
+              content.window,
+              content.document.body
+            );
+          }
+        );
+        tester.checkBeforeRun(expectedResultBefore, tipWrapper);
+        const expectedResultOfMakingTextControlReadonly =
+          await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.runToMakeTextControlReadonly();
+          });
+        tester.checkResultOfMakingTextControlReadonly(
+          expectedResultOfMakingTextControlReadonly
+        );
+        const expectedResultOfMakingTextControlEditable =
+          await SpecialPowers.spawn(browser, [], () => {
+            return content.wrappedJSObject.runner.runToMakeTextControlEditable();
+          });
+        tester.checkResultOfMakingTextControlEditable(
+          expectedResultOfMakingTextControlEditable
+        );
+        tipWrapper.clearFocusBlurNotifications();
+        tester.clear();
+      }
+    }
+  );
+});
diff --git a/widget/tests/browser/browser_test_scrollbar_colors.js b/widget/tests/browser/browser_test_scrollbar_colors.js
new file mode 100644
index 0000000000..2152412071
--- /dev/null
+++ b/widget/tests/browser/browser_test_scrollbar_colors.js
@@ -0,0 +1,146 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+
+"use strict";
+
+add_task(async () => {
+  const URL_ROOT = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content/",
+    "http://mochi.test:8888/"
+  );
+
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    URL_ROOT + "helper_scrollbar_colors.html"
+  );
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
+    ChromeUtils.defineESModuleGetters(this, {
+      WindowsVersionInfo:
+        "resource://gre/modules/components-utils/WindowsVersionInfo.sys.mjs",
+    });
+
+    Services.scriptloader.loadSubScript(
+      "chrome://mochikit/content/tests/SimpleTest/WindowSnapshot.js",
+      this
+    );
+
+    // == Native theme ==
+
+    const WIN_REFERENCES = [
+      // Yellow background
+      ["255,255,0", 6889],
+      // Blue scrollbar face
+      ["0,0,255", 540],
+      // Cyan scrollbar track
+      ["0,255,255", 2487],
+    ];
+
+    const MAC_REFERENCES = [
+      // Yellow background
+      ["255,255,0", 7225],
+      // Blue scrollbar face
+      ["0,0,255", 416],
+      // Cyan scrollbar track
+      ["0,255,255", 1760],
+    ];
+
+    // Values have been updated from 8100, 720, 1180 for linux1804
+    const LINUX_REFERENCES = [
+      // Yellow background
+      ["255,255,0", 7744],
+      // Blue scrollbar face
+      ["0,0,255", 1104],
+      // Cyan scrollbar track
+      ["0,255,255", 1152],
+    ];
+
+    // == Non-native theme ==
+
+    const WIN10_NNT_REFERENCES = [
+      // Yellow background
+      ["255,255,0", 6889],
+      // Blue scrollbar face
+      ["0,0,255", 612],
+      // Cyan scrollbar track
+      ["0,255,255", 2355],
+    ];
+
+    const WIN11_NNT_REFERENCES = [
+      // Yellow background
+      ["255,255,0", 6889],
+      // Blue scrollbar face
+      ["0,0,255", 324],
+      // Cyan scrollbar track
+      ["0,255,255", 2787],
+    ];
+
+    const MAC_NNT_REFERENCES = MAC_REFERENCES;
+
+    const LINUX_NNT_REFERENCES = [
+      // Yellow background
+      ["255,255,0", 7744],
+      // Blue scrollbar face
+      ["0,0,255", 368],
+      // Cyan scrollbar track
+      ["0,255,255", 1852],
+    ];
+
+    function countPixels(canvas) {
+      let result = new Map();
+      let ctx = canvas.getContext("2d");
+      let image = ctx.getImageData(0, 0, canvas.width, canvas.height);
+      let data = image.data;
+      let size = image.width * image.height;
+      for (let i = 0; i < size; i++) {
+        let key = data.subarray(i * 4, i * 4 + 3).toString();
+        let value = result.get(key);
+        value = value ? value : 0;
+        result.set(key, value + 1);
+      }
+      return result;
+    }
+
+    let outer = content.document.querySelector(".outer");
+    let outerRect = outer.getBoundingClientRect();
+    if (
+      outerRect.width == outer.clientWidth &&
+      outerRect.height == outer.clientHeight
+    ) {
+      ok(true, "Using overlay scrollbar, skip this test");
+      return;
+    }
+    content.document.querySelector("#style").textContent = `
+        .outer { scrollbar-color: blue cyan; }
+      `;
+
+    let canvas = snapshotRect(content.window, outerRect);
+    let stats = countPixels(canvas);
+    let isNNT = SpecialPowers.getBoolPref("widget.non-native-theme.enabled");
+
+    let references;
+    if (content.navigator.platform.startsWith("Win")) {
+      if (!isNNT) {
+        references = WIN_REFERENCES;
+      } else if (WindowsVersionInfo.get().buildNumber >= 22000) {
+        // Windows 11 NNT
+        references = WIN11_NNT_REFERENCES;
+      } else {
+        // Windows 10 NNT
+        references = WIN10_NNT_REFERENCES;
+      }
+    } else if (content.navigator.platform.startsWith("Mac")) {
+      references = isNNT ? MAC_NNT_REFERENCES : MAC_REFERENCES;
+    } else if (content.navigator.platform.startsWith("Linux")) {
+      references = isNNT ? LINUX_NNT_REFERENCES : LINUX_REFERENCES;
+    } else {
+      ok(false, "Unsupported platform");
+    }
+    for (let [color, count] of references) {
+      let value = stats.get(color);
+      is(value, count, `Pixel count of color ${color}`);
+    }
+  });
+
+  BrowserTestUtils.removeTab(tab);
+});
diff --git a/widget/tests/browser/browser_test_swipe_gesture.js b/widget/tests/browser/browser_test_swipe_gesture.js
new file mode 100644
index 0000000000..0ac85d80c8
--- /dev/null
+++ b/widget/tests/browser/browser_test_swipe_gesture.js
@@ -0,0 +1,1274 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+
+"use strict";
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/gfx/layers/apz/test/mochitest/apz_test_utils.js",
+  this
+);
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js",
+  this
+);
+
+async function waitForWhile() {
+  await new Promise(resolve => {
+    requestIdleCallback(resolve, { timeout: 300 });
+  });
+  await new Promise(r => requestAnimationFrame(r));
+}
+
+requestLongerTimeout(2);
+
+add_task(async () => {
+  // Set the default values for an OS that supports swipe to nav, except for
+  // pixel-size which varies by OS, we vary it in differente tests in this file.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      // Set the velocity-contribution to 0 so we can exactly control the
+      // values in the swipe tracker via the delta in the events that we send.
+      ["widget.swipe.success-velocity-contribution", 0.0],
+      ["widget.swipe.pixel-size", 550.0],
+    ],
+  });
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!gBrowser.webNavigation.canGoForward);
+
+  let wheelEventCount = 0;
+  tab.linkedBrowser.addEventListener("wheel", () => {
+    wheelEventCount++;
+  });
+
+  // Send a pan that starts a navigate back but doesn't have enough delta to do
+  // anything. Don't send the pan end because we want to check the opacity
+  // before the MSD animation in SwipeTracker starts which can temporarily put
+  // us at 1 opacity.
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 0.9);
+  await panLeftToRightUpdate(tab.linkedBrowser, 100, 100, 0.9);
+
+  // Check both getComputedStyle instead of element.style.opacity because we use a transition on the opacity.
+  let computedOpacity = window
+    .getComputedStyle(gHistorySwipeAnimation._prevBox)
+    .getPropertyValue("opacity");
+  is(computedOpacity, "1", "opacity of prevbox is 1");
+  let opacity = gHistorySwipeAnimation._prevBox.style.opacity;
+  is(opacity, "", "opacity style isn't explicitly set");
+
+  const isTranslatingIcon =
+    Services.prefs.getIntPref(
+      "browser.swipe.navigation-icon-start-position",
+      0
+    ) != 0 ||
+    Services.prefs.getIntPref(
+      "browser.swipe.navigation-icon-end-position",
+      0
+    ) != 0;
+  if (isTranslatingIcon != 0) {
+    isnot(
+      window
+        .getComputedStyle(gHistorySwipeAnimation._prevBox)
+        .getPropertyValue("translate"),
+      "none",
+      "translate of prevbox is not `none` during gestures"
+    );
+  }
+
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 0.9);
+
+  // NOTE: We only get a wheel event for the beginPhase, rest of events have
+  // been captured by the swipe gesture module.
+  is(wheelEventCount, 1, "Received a wheel event");
+
+  await waitForWhile();
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, secondPage);
+
+  // Try to navigate backward.
+  wheelEventCount = 0;
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+  // NOTE: We only get a wheel event for the beginPhase, rest of events have
+  // been captured by the swipe gesture module.
+  is(wheelEventCount, 1, "Received a wheel event");
+
+  // The element.style opacity will be 0 because we set it to 0 on successful navigation, however
+  // we have a tranisition on it so the computed style opacity will still be 1 because the transition hasn't started yet.
+  computedOpacity = window
+    .getComputedStyle(gHistorySwipeAnimation._prevBox)
+    .getPropertyValue("opacity");
+  ok(computedOpacity == 1, "computed opacity of prevbox is 1");
+  opacity = gHistorySwipeAnimation._prevBox.style.opacity;
+  ok(opacity == 0, "element.style opacity of prevbox 0");
+
+  if (isTranslatingIcon) {
+    // We don't have a transition for translate property so that we still have
+    // some amount of translate.
+    isnot(
+      window
+        .getComputedStyle(gHistorySwipeAnimation._prevBox)
+        .getPropertyValue("translate"),
+      "none",
+      "translate of prevbox is not `none` during the opacity transition"
+    );
+  }
+
+  // Make sure the gesture triggered going back to the previous page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+// Same test as above but pixel-size is increased and the multipliers passed to panLeftToRight correspondingly increased.
+add_task(async () => {
+  // Set the default values for an OS that supports swipe to nav, except for
+  // pixel-size which varies by OS, we vary it in differente tests
+  // in this file.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      // Set the velocity-contribution to 0 so we can exactly control the
+      // values in the swipe tracker via the delta in the events that we send.
+      ["widget.swipe.success-velocity-contribution", 0.0],
+      ["widget.swipe.pixel-size", 1100.0],
+    ],
+  });
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!gBrowser.webNavigation.canGoForward);
+
+  let wheelEventCount = 0;
+  tab.linkedBrowser.addEventListener("wheel", () => {
+    wheelEventCount++;
+  });
+
+  // Send a pan that starts a navigate back but doesn't have enough delta to do
+  // anything. Don't send the pan end because we want to check the opacity
+  // before the MSD animation in SwipeTracker starts which can temporarily put
+  // us at 1 opacity.
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 1.8);
+  await panLeftToRightUpdate(tab.linkedBrowser, 100, 100, 1.8);
+
+  // Check both getComputedStyle instead of element.style.opacity because we use a transition on the opacity.
+  let computedOpacity = window
+    .getComputedStyle(gHistorySwipeAnimation._prevBox)
+    .getPropertyValue("opacity");
+  is(computedOpacity, "1", "opacity of prevbox is 1");
+  let opacity = gHistorySwipeAnimation._prevBox.style.opacity;
+  is(opacity, "", "opacity style isn't explicitly set");
+
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 1.8);
+
+  // NOTE: We only get a wheel event for the beginPhase, rest of events have
+  // been captured by the swipe gesture module.
+  is(wheelEventCount, 1, "Received a wheel event");
+
+  await waitForWhile();
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, secondPage);
+
+  // Try to navigate backward.
+  wheelEventCount = 0;
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 2);
+  // NOTE: We only get a wheel event for the beginPhase, rest of events have
+  // been captured by the swipe gesture module.
+  is(wheelEventCount, 1, "Received a wheel event");
+
+  // The element.style opacity will be 0 because we set it to 0 on successful navigation, however
+  // we have a tranisition on it so the computed style opacity will still be 1 because the transition hasn't started yet.
+  computedOpacity = window
+    .getComputedStyle(gHistorySwipeAnimation._prevBox)
+    .getPropertyValue("opacity");
+  ok(computedOpacity == 1, "computed opacity of prevbox is 1");
+  opacity = gHistorySwipeAnimation._prevBox.style.opacity;
+  ok(opacity == 0, "element.style opacity of prevbox 0");
+
+  // Make sure the gesture triggered going back to the previous page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  // Set the default values for an OS that supports swipe to nav, except for
+  // pixel-size which varies by OS, we vary it in different tests
+  // in this file.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      // Set the velocity-contribution to 1 (default 0.05f) so velocity is a
+      // large contribution to the success value in SwipeTracker.cpp so it
+      // pushes us into success territory without going into success territory
+      // purely from th deltas.
+      ["widget.swipe.success-velocity-contribution", 2.0],
+      ["widget.swipe.pixel-size", 550.0],
+    ],
+  });
+
+  async function runTest() {
+    const firstPage = "about:about";
+    const secondPage = "about:mozilla";
+    const tab = await BrowserTestUtils.openNewForegroundTab(
+      gBrowser,
+      firstPage,
+      true /* waitForLoad */
+    );
+
+    BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+    await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+    // Make sure we can go back to the previous page.
+    ok(gBrowser.webNavigation.canGoBack);
+    // and we cannot go forward to the next page.
+    ok(!gBrowser.webNavigation.canGoForward);
+
+    let wheelEventCount = 0;
+    tab.linkedBrowser.addEventListener("wheel", () => {
+      wheelEventCount++;
+    });
+
+    let startLoadingPromise = BrowserTestUtils.browserStarted(
+      tab.linkedBrowser,
+      firstPage
+    );
+    let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+      tab.linkedBrowser,
+      firstPage
+    );
+    let startTime = performance.now();
+    await panLeftToRight(tab.linkedBrowser, 100, 100, 0.2);
+    let endTime = performance.now();
+
+    // If sending the events took too long then we might not have been able
+    // to generate enough velocity.
+    // The value 230 was picked based on try runs, in particular test verify
+    // runs on mac were the long pole, and when we get times near this we can
+    // still achieve the required velocity.
+    if (endTime - startTime > 230) {
+      BrowserTestUtils.removeTab(tab);
+      return false;
+    }
+
+    // NOTE: We only get a wheel event for the beginPhase, rest of events have
+    // been captured by the swipe gesture module.
+    is(wheelEventCount, 1, "Received a wheel event");
+
+    // The element.style opacity will be 0 because we set it to 0 on successful navigation, however
+    // we have a tranisition on it so the computed style opacity will still be 1 because the transition hasn't started yet.
+    let computedOpacity = window
+      .getComputedStyle(gHistorySwipeAnimation._prevBox)
+      .getPropertyValue("opacity");
+    ok(computedOpacity == 1, "computed opacity of prevbox is 1");
+    let opacity = gHistorySwipeAnimation._prevBox.style.opacity;
+    ok(opacity == 0, "element.style opacity of prevbox 0");
+
+    // Make sure the gesture triggered going back to the previous page.
+    await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+    ok(gBrowser.webNavigation.canGoForward);
+
+    BrowserTestUtils.removeTab(tab);
+
+    return true;
+  }
+
+  let numTries = 15;
+  while (numTries > 0) {
+    await new Promise(r => requestAnimationFrame(r));
+    await new Promise(resolve => requestIdleCallback(resolve));
+    await new Promise(r => requestAnimationFrame(r));
+
+    // runTest return value indicates if test was able to run to the end.
+    if (await runTest()) {
+      break;
+    }
+    numTries--;
+  }
+  ok(numTries > 0, "never ran the test");
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  // Set the default values for an OS that supports swipe to nav, except for
+  // pixel-size which varies by OS, we vary it in differente tests
+  // in this file.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      // Set the velocity-contribution to 0 so we can exactly control the
+      // values in the swipe tracker via the delta in the events that we send.
+      ["widget.swipe.success-velocity-contribution", 0.0],
+      ["widget.swipe.pixel-size", 550.0],
+    ],
+  });
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!gBrowser.webNavigation.canGoForward);
+
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 2);
+
+  // Make sure the gesture triggered going back to the previous page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  while (
+    gHistorySwipeAnimation._prevBox != null ||
+    gHistorySwipeAnimation._nextBox != null
+  ) {
+    await new Promise(r => requestAnimationFrame(r));
+  }
+
+  ok(
+    gHistorySwipeAnimation._prevBox == null &&
+      gHistorySwipeAnimation._nextBox == null
+  );
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      // Set the velocity-contribution to 0 so we can exactly control the
+      // values in the swipe tracker via the delta in the events that we send.
+      ["widget.swipe.success-velocity-contribution", 0.0],
+      ["widget.swipe.pixel-size", 550.0],
+    ],
+  });
+
+  function swipeGestureEndPromise() {
+    return new Promise(resolve => {
+      let promiseObserver = {
+        handleEvent(aEvent) {
+          switch (aEvent.type) {
+            case "MozSwipeGestureEnd":
+              gBrowser.tabbox.removeEventListener(
+                "MozSwipeGestureEnd",
+                promiseObserver,
+                true
+              );
+              resolve();
+              break;
+          }
+        },
+      };
+      gBrowser.tabbox.addEventListener(
+        "MozSwipeGestureEnd",
+        promiseObserver,
+        true
+      );
+    });
+  }
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!gBrowser.webNavigation.canGoForward);
+
+  let numSwipeGestureEndEvents = 0;
+  var anObserver = {
+    handleEvent(aEvent) {
+      switch (aEvent.type) {
+        case "MozSwipeGestureEnd":
+          numSwipeGestureEndEvents++;
+          break;
+      }
+    },
+  };
+
+  gBrowser.tabbox.addEventListener("MozSwipeGestureEnd", anObserver, true);
+
+  let gestureEndPromise = swipeGestureEndPromise();
+
+  is(
+    numSwipeGestureEndEvents,
+    0,
+    "expected no MozSwipeGestureEnd got " + numSwipeGestureEndEvents
+  );
+
+  // Send a pan that starts a navigate back but doesn't have enough delta to do
+  // anything.
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 0.9);
+
+  await waitForWhile();
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, secondPage);
+  // end event comes after a swipe that does not navigate
+  await gestureEndPromise;
+  is(
+    numSwipeGestureEndEvents,
+    1,
+    "expected one MozSwipeGestureEnd got " + numSwipeGestureEndEvents
+  );
+
+  // Try to navigate backward.
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+
+  gestureEndPromise = swipeGestureEndPromise();
+
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+
+  // Make sure the gesture triggered going back to the previous page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  await gestureEndPromise;
+
+  is(
+    numSwipeGestureEndEvents,
+    2,
+    "expected one MozSwipeGestureEnd got " + (numSwipeGestureEndEvents - 1)
+  );
+
+  gBrowser.tabbox.removeEventListener("MozSwipeGestureEnd", anObserver, true);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  // success-velocity-contribution is very high and pixel-size is
+  // very low so that one swipe goes over the threshold asap.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 999999.0],
+      ["widget.swipe.pixel-size", 1.0],
+    ],
+  });
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!gBrowser.webNavigation.canGoForward);
+
+  // Navigate backward.
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 100);
+
+  ok(gHistorySwipeAnimation._prevBox != null, "should have prevbox");
+  let transitionCancelPromise = new Promise(resolve => {
+    gHistorySwipeAnimation._prevBox.addEventListener(
+      "transitioncancel",
+      event => {
+        if (
+          event.propertyName == "opacity" &&
+          event.target == gHistorySwipeAnimation._prevBox
+        ) {
+          resolve();
+        }
+      },
+      { once: true }
+    );
+  });
+  let transitionStartPromise = new Promise(resolve => {
+    gHistorySwipeAnimation._prevBox.addEventListener(
+      "transitionstart",
+      event => {
+        if (
+          event.propertyName == "opacity" &&
+          event.target == gHistorySwipeAnimation._prevBox
+        ) {
+          resolve();
+        }
+      },
+      { once: true }
+    );
+  });
+
+  await panLeftToRightUpdate(tab.linkedBrowser, 100, 100, 100);
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 100);
+
+  // Make sure the gesture triggered going back to the previous page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  await Promise.any([transitionStartPromise, transitionCancelPromise]);
+
+  await TestUtils.waitForCondition(() => {
+    return (
+      gHistorySwipeAnimation._prevBox == null &&
+      gHistorySwipeAnimation._nextBox == null
+    );
+  });
+
+  // Navigate forward and check the forward navigation icon box state.
+  startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    secondPage
+  );
+  stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    secondPage
+  );
+
+  await panRightToLeftBegin(tab.linkedBrowser, 100, 100, 100);
+
+  ok(gHistorySwipeAnimation._nextBox != null, "should have nextbox");
+  transitionCancelPromise = new Promise(resolve => {
+    gHistorySwipeAnimation._nextBox.addEventListener(
+      "transitioncancel",
+      event => {
+        if (
+          event.propertyName == "opacity" &&
+          event.target == gHistorySwipeAnimation._nextBox
+        ) {
+          resolve();
+        }
+      }
+    );
+  });
+  transitionStartPromise = new Promise(resolve => {
+    gHistorySwipeAnimation._nextBox.addEventListener(
+      "transitionstart",
+      event => {
+        if (
+          event.propertyName == "opacity" &&
+          event.target == gHistorySwipeAnimation._nextBox
+        ) {
+          resolve();
+        }
+      }
+    );
+  });
+
+  await panRightToLeftUpdate(tab.linkedBrowser, 100, 100, 100);
+  await panRightToLeftEnd(tab.linkedBrowser, 100, 100, 100);
+
+  // Make sure the gesture triggered going forward to the next page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoBack);
+
+  await Promise.any([transitionStartPromise, transitionCancelPromise]);
+
+  await TestUtils.waitForCondition(() => {
+    return (
+      gHistorySwipeAnimation._nextBox == null &&
+      gHistorySwipeAnimation._prevBox == null
+    );
+  });
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+// A simple test case on RTL.
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 0.5],
+      ["intl.l10n.pseudo", "bidi"],
+    ],
+  });
+
+  const newWin = await BrowserTestUtils.openNewBrowserWindow();
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    newWin.gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(newWin.gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!newWin.gBrowser.webNavigation.canGoForward);
+
+  // Make sure that our gesture support stuff has been initialized in the new
+  // browser window.
+  await TestUtils.waitForCondition(() => {
+    return newWin.gHistorySwipeAnimation.active;
+  });
+
+  // Try to navigate backward.
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+  await panRightToLeft(tab.linkedBrowser, 100, 100, 1);
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(newWin.gBrowser.webNavigation.canGoForward);
+
+  // Now try to navigate forward again.
+  startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    secondPage
+  );
+  stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    secondPage
+  );
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(newWin.gBrowser.webNavigation.canGoBack);
+
+  await BrowserTestUtils.closeWindow(newWin);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 0.5],
+      ["apz.overscroll.enabled", true],
+      ["apz.test.logging_enabled", true],
+    ],
+  });
+
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:about",
+    true /* waitForLoad */
+  );
+
+  const URL_ROOT = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content/",
+    "http://mochi.test:8888/"
+  );
+  BrowserTestUtils.startLoadingURIString(
+    tab.linkedBrowser,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    // Set `overscroll-behavior-x: contain` and flush it.
+    content.document.documentElement.style.overscrollBehaviorX = "contain";
+    content.document.documentElement.getBoundingClientRect();
+    await content.wrappedJSObject.promiseApzFlushedRepaints();
+  });
+
+  // Start a pan gesture but keep touching.
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 2);
+
+  // Flush APZ pending requests to make sure the pan gesture has been processed.
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    await content.wrappedJSObject.promiseApzFlushedRepaints();
+  });
+
+  const isOverscrolled = await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [],
+    () => {
+      const scrollId = SpecialPowers.DOMWindowUtils.getViewId(
+        content.document.scrollingElement
+      );
+      const data = SpecialPowers.DOMWindowUtils.getCompositorAPZTestData();
+      return data.additionalData.some(entry => {
+        return (
+          entry.key == scrollId &&
+          entry.value.split(",").includes("overscrolled")
+        );
+      });
+    }
+  );
+
+  ok(isOverscrolled, "The root scroller should have overscrolled");
+
+  // Finish the pan gesture.
+  await panLeftToRightUpdate(tab.linkedBrowser, 100, 100, 2);
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 2);
+
+  // And wait a while to give a chance to navigate.
+  await waitForWhile();
+
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, URL_ROOT + "helper_swipe_gesture.html");
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+// A test case to make sure the short circuit path for swipe-to-navigations in
+// APZ works, i.e. cases where we know for sure that the target APZC for a given
+// pan-start event isn't scrollable in the pan-start event direction.
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["apz.overscroll.enabled", true],
+    ],
+  });
+
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:about",
+    true /* waitForLoad */
+  );
+
+  const URL_ROOT = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content/",
+    "http://mochi.test:8888/"
+  );
+  BrowserTestUtils.startLoadingURIString(
+    tab.linkedBrowser,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+
+  // Make sure the content can allow both of overscrolling and
+  // swipe-to-navigations.
+  const overscrollBehaviorX = await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [],
+    () => {
+      return content.window.getComputedStyle(content.document.documentElement)
+        .overscrollBehaviorX;
+    }
+  );
+  is(overscrollBehaviorX, "auto");
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+
+  // Start a pan gesture but keep touching.
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 2);
+
+  // The above pan event should invoke a SwipeGestureStart event immediately so
+  // that the swipe-to-navigation icon box should be uncollapsed to show it.
+  ok(!gHistorySwipeAnimation._prevBox.collapsed);
+
+  // Finish the pan gesture, i.e. sending a pan-end event, otherwise a new
+  // pan-start event in the next will also generate a pan-interrupt event which
+  // will break the test.
+  await panLeftToRightUpdate(tab.linkedBrowser, 100, 100, 2);
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 2);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 0.5],
+      ["apz.overscroll.enabled", true],
+      ["apz.test.logging_enabled", true],
+    ],
+  });
+
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:about",
+    true /* waitForLoad */
+  );
+
+  const URL_ROOT = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content/",
+    "http://mochi.test:8888/"
+  );
+  BrowserTestUtils.startLoadingURIString(
+    tab.linkedBrowser,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+
+  // Start a pan gesture but keep touching.
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 2);
+
+  // Flush APZ pending requests to make sure the pan gesture has been processed.
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    await content.wrappedJSObject.promiseApzFlushedRepaints();
+  });
+
+  const isOverscrolled = await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [],
+    () => {
+      const scrollId = SpecialPowers.DOMWindowUtils.getViewId(
+        content.document.scrollingElement
+      );
+      const data = SpecialPowers.DOMWindowUtils.getCompositorAPZTestData();
+      return data.additionalData.some(entry => {
+        return entry.key == scrollId && entry.value.includes("overscrolled");
+      });
+    }
+  );
+
+  ok(!isOverscrolled, "The root scroller should not have overscrolled");
+
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 0);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 0.5],
+    ],
+  });
+
+  // Load three pages and go to the second page so that it can be navigated
+  // to both back and forward.
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:about",
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, "about:mozilla");
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    "about:mozilla"
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, "about:home");
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    "about:home"
+  );
+
+  gBrowser.goBack();
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    "about:mozilla"
+  );
+
+  // Make sure we can go back and go forward.
+  ok(gBrowser.webNavigation.canGoBack);
+  ok(gBrowser.webNavigation.canGoForward);
+
+  // Start a history back pan gesture but keep touching.
+  await panLeftToRightBegin(tab.linkedBrowser, 100, 100, 1);
+
+  ok(
+    !gHistorySwipeAnimation._prevBox.collapsed,
+    "The icon box for the previous navigation should NOT be collapsed"
+  );
+  ok(
+    gHistorySwipeAnimation._nextBox.collapsed,
+    "The icon box for the next navigation should be collapsed"
+  );
+
+  // Pan back to the opposite direction so that the gesture should be cancelled.
+  // eslint-disable-next-line no-undef
+  await NativePanHandler.promiseNativePanEvent(
+    tab.linkedBrowser,
+    100,
+    100,
+    // eslint-disable-next-line no-undef
+    NativePanHandler.delta,
+    0,
+    // eslint-disable-next-line no-undef
+    NativePanHandler.updatePhase
+  );
+
+  ok(
+    gHistorySwipeAnimation._prevBox.collapsed,
+    "The icon box for the previous navigation should be collapsed"
+  );
+  ok(
+    gHistorySwipeAnimation._nextBox.collapsed,
+    "The icon box for the next navigation should be collapsed"
+  );
+
+  await panLeftToRightEnd(tab.linkedBrowser, 100, 100, 0);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 0.5],
+      ["apz.overscroll.enabled", true],
+      ["apz.overscroll.damping", 5.0],
+      ["apz.content_response_timeout", 0],
+    ],
+  });
+
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:about",
+    true /* waitForLoad */
+  );
+
+  const URL_ROOT = getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content/",
+    "http://mochi.test:8888/"
+  );
+
+  // Load a horizontal scrollable content.
+  BrowserTestUtils.startLoadingURIString(
+    tab.linkedBrowser,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+  await BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false /* includeSubFrames */,
+    URL_ROOT + "helper_swipe_gesture.html"
+  );
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+
+  // Shift the horizontal scroll position slightly to make the content
+  // overscrollable.
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    content.document.documentElement.scrollLeft = 1;
+    content.document.documentElement.getBoundingClientRect();
+    await content.wrappedJSObject.promiseApzFlushedRepaints();
+  });
+
+  // Swipe horizontally to overscroll.
+  await panLeftToRight(tab.linkedBrowser, 1, 100, 1);
+
+  // Swipe again over the overscroll gutter.
+  await panLeftToRight(tab.linkedBrowser, 1, 100, 1);
+
+  // Wait the overscroll gutter is restored.
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    // For some reasons using functions in apz_test_native_event_utils.js
+    // sometimes causes "TypeError content.wrappedJSObject.XXXX is not a
+    // function" error, so we observe "APZ:TransformEnd" instead of using
+    // promiseTransformEnd().
+    await new Promise((resolve, reject) => {
+      SpecialPowers.Services.obs.addObserver(function observer(
+        subject,
+        topic,
+        data
+      ) {
+        try {
+          SpecialPowers.Services.obs.removeObserver(observer, topic);
+          resolve([subject, data]);
+        } catch (ex) {
+          SpecialPowers.Services.obs.removeObserver(observer, topic);
+          reject(ex);
+        }
+      },
+      "APZ:TransformEnd");
+    });
+  });
+
+  // Set up an APZ aware event listener and...
+  await SpecialPowers.spawn(tab.linkedBrowser, [], async () => {
+    content.document.documentElement.addEventListener("wheel", e => {}, {
+      passive: false,
+    });
+    await content.wrappedJSObject.promiseApzFlushedRepaints();
+  });
+
+  // Try to swipe back again without overscrolling to make sure swipe-navigation
+  // works with the APZ aware event listener.
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    "about:about"
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    "about:about"
+  );
+
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
+
+// NOTE: This test listens wheel events so that it causes an overscroll issue
+// (bug 1800022). To avoid the bug, we need to run this test case at the end
+// of this file.
+add_task(async () => {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.gesture.swipe.left", "Browser:BackOrBackDuplicate"],
+      ["browser.gesture.swipe.right", "Browser:ForwardOrForwardDuplicate"],
+      ["widget.disable-swipe-tracker", false],
+      ["widget.swipe.velocity-twitch-tolerance", 0.0000001],
+      ["widget.swipe.success-velocity-contribution", 0.5],
+    ],
+  });
+
+  const firstPage = "about:about";
+  const secondPage = "about:mozilla";
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    firstPage,
+    true /* waitForLoad */
+  );
+
+  BrowserTestUtils.startLoadingURIString(tab.linkedBrowser, secondPage);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser, false, secondPage);
+
+  // Make sure we can go back to the previous page.
+  ok(gBrowser.webNavigation.canGoBack);
+  // and we cannot go forward to the next page.
+  ok(!gBrowser.webNavigation.canGoForward);
+
+  let wheelEventCount = 0;
+  tab.linkedBrowser.addEventListener("wheel", () => {
+    wheelEventCount++;
+  });
+
+  // Try to navigate forward.
+  await panRightToLeft(tab.linkedBrowser, 100, 100, 1);
+  // NOTE: The last endPhase shouldn't fire a wheel event since
+  // its delta is zero.
+  is(wheelEventCount, 2, "Received 2 wheel events");
+
+  await waitForWhile();
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, secondPage);
+
+  // Try to navigate backward.
+  wheelEventCount = 0;
+  let startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    firstPage
+  );
+  let stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    firstPage
+  );
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+  // NOTE: We only get a wheel event for the beginPhase, rest of events have
+  // been captured by the swipe gesture module.
+  is(wheelEventCount, 1, "Received a wheel event");
+
+  // Make sure the gesture triggered going back to the previous page.
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoForward);
+
+  // Now try to navigate forward again.
+  wheelEventCount = 0;
+  startLoadingPromise = BrowserTestUtils.browserStarted(
+    tab.linkedBrowser,
+    secondPage
+  );
+  stoppedLoadingPromise = BrowserTestUtils.browserStopped(
+    tab.linkedBrowser,
+    secondPage
+  );
+  await panRightToLeft(tab.linkedBrowser, 100, 100, 1);
+  is(wheelEventCount, 1, "Received a wheel event");
+
+  await Promise.all([startLoadingPromise, stoppedLoadingPromise]);
+
+  ok(gBrowser.webNavigation.canGoBack);
+
+  // Now try to navigate backward again but with preventDefault-ed event
+  // handler.
+  wheelEventCount = 0;
+  let wheelEventListener = event => {
+    event.preventDefault();
+  };
+  tab.linkedBrowser.addEventListener("wheel", wheelEventListener);
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+  is(wheelEventCount, 3, "Received all wheel events");
+
+  await waitForWhile();
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, secondPage);
+
+  // Now drop the event handler and disable the swipe tracker and try to swipe
+  // again.
+  wheelEventCount = 0;
+  tab.linkedBrowser.removeEventListener("wheel", wheelEventListener);
+  await SpecialPowers.pushPrefEnv({
+    set: [["widget.disable-swipe-tracker", true]],
+  });
+
+  await panLeftToRight(tab.linkedBrowser, 100, 100, 1);
+  is(wheelEventCount, 3, "Received all wheel events");
+
+  await waitForWhile();
+  // Make sure any navigation didn't happen.
+  is(tab.linkedBrowser.currentURI.spec, secondPage);
+
+  BrowserTestUtils.removeTab(tab);
+  await SpecialPowers.popPrefEnv();
+});
diff --git a/widget/tests/browser/file_ime_state_tests.html b/widget/tests/browser/file_ime_state_tests.html
new file mode 100644
index 0000000000..d6b63f1e52
--- /dev/null
+++ b/widget/tests/browser/file_ime_state_tests.html
@@ -0,0 +1,48 @@
+<!doctype html>
+<html style="ime-mode: disabled;">
+<head>
+<meta charset="utf-8">
+<script src="file_ime_state_test_helper.js"></script>
+<script src="file_test_ime_state_in_contenteditable_on_readonly_change.js"></script>
+<script src="file_test_ime_state_in_text_control_on_reframe.js"></script>
+<script src="file_test_ime_state_on_focus_move.js"></script>
+<script src="file_test_ime_state_on_input_type_change.js"></script>
+<script src="file_test_ime_state_on_readonly_change.js"></script>
+<script>
+"use strict";
+
+/* import-globals-from ../file_ime_state_test_helper.js */
+/* import-globals-from ../file_test_ime_state_in_contenteditable_on_readonly_change.js */
+/* import-globals-from ../file_test_ime_state_in_text_control_on_reframe.js */
+/* import-globals-from ../file_test_ime_state_on_focus_move.js */
+/* import-globals-from ../file_test_ime_state_on_input_type_change.js */
+/* import-globals-from ../file_test_ime_state_on_readonly_change.js */
+
+function createIMEStateInContentEditableOnReadonlyChangeTester() {
+  return new IMEStateInContentEditableOnReadonlyChangeTester();
+}
+function createIMEStateOfTextControlInContentEditableOnReadonlyChangeTester() {
+  return new IMEStateOfTextControlInContentEditableOnReadonlyChangeTester();
+}
+function createIMEStateOutsideContentEditableOnReadonlyChangeTester() {
+  return new IMEStateOutsideContentEditableOnReadonlyChangeTester();
+}
+function createIMEStateInTextControlOnReframeTester() {
+  return new IMEStateInTextControlOnReframeTester();
+}
+function createIMEStateWhenNoActiveElementTester(aDescription) {
+  return new IMEStateWhenNoActiveElementTester(aDescription);
+}
+function createIMEStateOnFocusMoveTester(aDescription, aIndex, aWindow = window) {
+  return new IMEStateOnFocusMoveTester(aDescription, aIndex, aWindow);
+}
+function createIMEStateOnInputTypeChangeTester(aSrcIndex) {
+  return new IMEStateOnInputTypeChangeTester(aSrcIndex);
+}
+function createIMEStateOnReadonlyChangeTester() {
+  return new IMEStateOnReadonlyChangeTester();
+}
+</script>
+</head>
+<body style="ime-mode: disabled;"><div style="ime-mode: disabled;"></div></body>
+</html>
diff --git a/widget/tests/browser/helper_scrollbar_colors.html b/widget/tests/browser/helper_scrollbar_colors.html
new file mode 100644
index 0000000000..e6001906e2
--- /dev/null
+++ b/widget/tests/browser/helper_scrollbar_colors.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<meta charset="UTF-8">
+<title>Test for scrollbar-*-color properties</title>
+<style>
+  .outer {
+    width: 100px;
+    height: 100px;
+    background: yellow;
+    overflow: scroll;
+  }
+  .inner {
+    width: 200px;
+    height: 200px;
+  }
+</style>
+<style id="style"></style>
+<div class="outer">
+  <div class="inner">
+  </div>
+</div>
+</html>
diff --git a/widget/tests/browser/helper_swipe_gesture.html b/widget/tests/browser/helper_swipe_gesture.html
new file mode 100644
index 0000000000..1fa79dbbf3
--- /dev/null
+++ b/widget/tests/browser/helper_swipe_gesture.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<script src="/tests/SimpleTest/paint_listener.js"></script>
+<script src="/browser/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
+<script src="/browser/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js"></script>
+<style>
+html {
+  overflow-x: scroll;
+}
+body {
+  margin: 0;
+}
+div {
+  height: 100vh;
+  width: 110vw;
+  background-color: blue;
+}
+</style>
+<div></div>
+</html>
diff --git a/widget/tests/bug586713_window.xhtml b/widget/tests/bug586713_window.xhtml
new file mode 100644
index 0000000000..c180c00235
--- /dev/null
+++ b/widget/tests/bug586713_window.xhtml
@@ -0,0 +1,50 @@
+<?xml version="1.0"?>
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+
+<window id="bug586713_window"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        width="300"
+        height="300"
+        onload="onLoad();"
+        title="Bug 586713 Test">
+
+  <menubar id="nativemenubar">
+    <menu id="foo" label="Foo">
+      <menupopup>
+        <menuitem label="FooItem0"/>
+      </menupopup>
+    </menu>
+  </menubar>
+
+  <script type="application/javascript"><![CDATA[
+    function ok(condition, message) {
+      window.arguments[0].SimpleTest.ok(condition, message);
+    }
+
+    function onTestsFinished() {
+      window.close();
+      window.arguments[0].SimpleTest.finish();
+    }
+
+    var fooCallCount = 0;
+    function foo() {
+      fooCallCount++;
+      let instruction = document.createProcessingInstruction("xml-stylesheet", 'href="chrome://foo.css" type="text/css"');
+      document.insertBefore(instruction, document.documentElement);
+      if (fooCallCount == 2) {
+        ok(true, "If we got here we didn't crash, excellent.");
+        onTestsFinished();
+      }
+    }
+
+    function onLoad() {
+      foo();
+      setTimeout(() => foo(), 0);
+    }
+  ]]></script>
+</window>
diff --git a/widget/tests/chrome.toml b/widget/tests/chrome.toml
new file mode 100644
index 0000000000..08d02d3c36
--- /dev/null
+++ b/widget/tests/chrome.toml
@@ -0,0 +1,200 @@
+[DEFAULT]
+skip-if = ["os == 'android'"]
+support-files = [
+  "empty_window.xhtml",
+  "clipboard_helper.js",
+]
+
+["test_alwaysontop_focus.xhtml"]
+
+# Privacy relevant
+
+["test_bug1123480.xhtml"]
+skip-if = ["win11_2009 && bits == 32"]
+
+["test_bug343416.xhtml"]
+skip-if = ["debug"]
+
+["test_bug428405.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_bug429954.xhtml"]
+support-files = ["window_bug429954.xhtml"]
+
+["test_bug444800.xhtml"]
+
+["test_bug466599.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_bug478536.xhtml"]
+skip-if = ["true"] # Bug 561929
+support-files = ["window_bug478536.xhtml"]
+
+["test_bug485118.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_bug517396.xhtml"]
+skip-if = ["verify && os == 'win'"]
+
+["test_bug522217.xhtml"]
+tags = "fullscreen"
+run-if = ["os == 'mac'"] # Cocoa widget test
+support-files = ["window_bug522217.xhtml"]
+
+["test_bug538242.xhtml"]
+support-files = ["window_bug538242.xhtml"]
+
+["test_bug565392.html"]
+run-if = ["os == 'win'"]
+
+["test_bug586713.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+support-files = ["bug586713_window.xhtml"]
+
+["test_bug593307.xhtml"]
+support-files = [
+  "window_bug593307_offscreen.xhtml",
+  "window_bug593307_centerscreen.xhtml",
+]
+
+["test_bug596600.xhtml"]
+support-files = "file_bug596600.html"
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_bug673301.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_bug760802.xhtml"]
+
+["test_clipboard_chrome.html"]
+support-files = "file_test_clipboard.js"
+
+["test_clipboard_asyncGetData_chrome.html"]
+support-files = "file_test_clipboard_asyncGetData.js"
+
+["test_clipboard_asyncSetData_chrome.html"]
+support-files = "file_test_clipboard_asyncSetData.js"
+
+["test_clipboard_cache_chrome.html"]
+
+["test_clipboard_owner_chrome.html"]
+
+["test_composition_text_querycontent.xhtml"]
+support-files = ["window_composition_text_querycontent.xhtml"]
+
+["test_ime_state_in_contenteditable_on_readonly_change_in_parent.html"]
+support-files = [
+  "file_ime_state_test_helper.js",
+  "file_test_ime_state_in_contenteditable_on_readonly_change.js",
+]
+
+["test_ime_state_in_plugin_in_parent.html"]
+support-files = ["file_ime_state_test_helper.js"]
+
+["test_ime_state_in_text_control_on_reframe_in_parent.html"]
+support-files = [
+  "file_ime_state_test_helper.js",
+  "file_test_ime_state_in_text_control_on_reframe.js",
+]
+
+["test_ime_state_on_editable_state_change_in_parent.html"]
+support-files = ["file_ime_state_test_helper.js"]
+
+["test_ime_state_on_focus_move_in_parent.html"]
+support-files = [
+  "file_ime_state_test_helper.js",
+  "file_test_ime_state_on_focus_move.js",
+]
+
+["test_ime_state_on_input_type_change_in_parent.html"]
+skip-if = ["true"] # Bug 1817704
+support-files = [
+  "file_ime_state_test_helper.js",
+  "file_test_ime_state_on_input_type_change.js",
+]
+
+["test_ime_state_on_readonly_change_in_parent.html"]
+support-files = [
+  "file_ime_state_test_helper.js",
+  "file_test_ime_state_on_readonly_change.js",
+]
+
+["test_ime_state_others_in_parent.html"]
+support-files = ["window_imestate_iframes.html"]
+
+["test_input_events_on_deactive_window.xhtml"]
+support-files = ["file_input_events_on_deactive_window.html"]
+
+["test_key_event_counts.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_keycodes.xhtml"]
+
+["test_mouse_scroll.xhtml"]
+run-if = ["os == 'win'"] # windows widget test
+support-files = [
+  "window_mouse_scroll_win.html",
+  "window_mouse_scroll_win_2.html",
+]
+
+["test_native_key_bindings_mac.html"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+skip-if = [
+  "verify",
+]
+
+["test_native_menus.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+support-files = ["native_menus_window.xhtml"]
+
+["test_panel_mouse_coords.xhtml"]
+skip-if = ["os == 'win'"] # bug 1009955
+
+["test_platform_colors.xhtml"]
+skip-if = ["true"] # Bug 1207190
+
+["test_position_on_resize.xhtml"]
+skip-if = [
+  "verify && os == 'win'",
+  "os == 'linux' && bits == 64", # Bug 1616760
+]
+
+["test_secure_input.html"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+support-files = ["file_secure_input.html"]
+
+["test_sizemode_events.xhtml"]
+
+["test_standalone_native_menu.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+support-files = ["standalone_native_menu_window.xhtml"]
+
+["test_surrogate_pair_native_key_handling.xhtml"]
+run-if = ["os == 'win'"] # Windows widget test
+
+["test_system_font_changes.xhtml"]
+support-files = ["system_font_changes.xhtml"]
+run-if = ["os == 'linux'"] # Currently the test works on only gtk3
+
+["test_system_status_bar.xhtml"]
+run-if = ["os == 'mac'"] # Cocoa widget test
+
+["test_taskbar_progress.xhtml"]
+skip-if = [
+  "os == 'linux'",
+  "os == 'android'",
+  "win10_2009 && !ccov", # Bug 1456811
+]
+
+["test_transferable_overflow.xhtml"]
+skip-if = [
+  "verify && apple_catalina",
+  "verify && os == 'linux'",
+]
+
+["test_wheeltransaction.xhtml"]
+support-files = ["window_wheeltransaction.xhtml"]
+
+# Windows
+# taskbar_previews.xhtml
+# window_state_windows.xhtml
diff --git a/widget/tests/clipboard_helper.js b/widget/tests/clipboard_helper.js
new file mode 100644
index 0000000000..96787468fb
--- /dev/null
+++ b/widget/tests/clipboard_helper.js
@@ -0,0 +1,230 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const Cc = SpecialPowers.Cc;
+const Ci = SpecialPowers.Ci;
+const Cr = SpecialPowers.Cr;
+const clipboard = SpecialPowers.Services.clipboard;
+const clipboardTypes = [
+  clipboard.kGlobalClipboard,
+  clipboard.kSelectionClipboard,
+  clipboard.kFindClipboard,
+  clipboard.kSelectionCache,
+];
+
+function emptyClipboardData(aType) {
+  // XXX gtk doesn't support emptying clipboard data which is stored from
+  // other application (bug 1853884). As a workaround, we set dummy data
+  // to the clipboard first to ensure the subsequent emptyClipboard call
+  // works.
+  if (navigator.platform.includes("Linux")) {
+    writeStringToClipboard("foo", "text/plain", aType);
+  }
+
+  clipboard.emptyClipboard(aType);
+}
+
+function cleanupAllClipboard() {
+  clipboardTypes.forEach(function (type) {
+    if (clipboard.isClipboardTypeSupported(type)) {
+      info(`cleanup clipboard ${type}`);
+      emptyClipboardData(type);
+    }
+  });
+}
+
+function generateRandomString() {
+  return "random number: " + Math.random();
+}
+
+function generateNewTransferable(aFlavor, aStr) {
+  let trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+    Ci.nsITransferable
+  );
+  trans.init(null);
+  trans.addDataFlavor(aFlavor);
+
+  let supportsStr = Cc["@mozilla.org/supports-string;1"].createInstance(
+    Ci.nsISupportsString
+  );
+  supportsStr.data = aStr;
+  trans.setTransferData(aFlavor, supportsStr);
+
+  return trans;
+}
+
+function addStringToTransferable(aFlavor, aStr, aTrans) {
+  aTrans.addDataFlavor(aFlavor);
+
+  let supportsStr = Cc["@mozilla.org/supports-string;1"].createInstance(
+    Ci.nsISupportsString
+  );
+  supportsStr.data = aStr;
+  aTrans.setTransferData(aFlavor, supportsStr);
+}
+
+function updateStringToTransferable(aFlavor, aStr, aTrans) {
+  let supportsStr = Cc["@mozilla.org/supports-string;1"].createInstance(
+    Ci.nsISupportsString
+  );
+  supportsStr.data = aStr;
+  aTrans.setTransferData(aFlavor, supportsStr);
+}
+
+function writeStringToClipboard(
+  aStr,
+  aFlavor,
+  aClipboardType,
+  aClipboardOwner = null,
+  aAsync = false
+) {
+  let trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+    Ci.nsITransferable
+  );
+  trans.init(null);
+  trans.addDataFlavor(aFlavor);
+
+  let supportsStr = Cc["@mozilla.org/supports-string;1"].createInstance(
+    Ci.nsISupportsString
+  );
+  supportsStr.data = aStr;
+  trans.setTransferData(aFlavor, supportsStr);
+
+  if (aAsync) {
+    let request = clipboard.asyncSetData(aClipboardType);
+    request.setData(trans, aClipboardOwner);
+    return;
+  }
+
+  clipboard.setData(trans, aClipboardOwner, aClipboardType);
+  // XXX gtk doesn't support get empty text data from clipboard, bug 1852983.
+  if (aStr == "" && navigator.platform.includes("Linux")) {
+    todo_is(
+      getClipboardData(aFlavor, aClipboardType),
+      "",
+      `Should get empty string on clipboard type ${aClipboardType}`
+    );
+  } else {
+    is(
+      getClipboardData(aFlavor, aClipboardType),
+      // On Windows, widget adds extra data into HTML clipboard.
+      aFlavor == "text/html" && navigator.platform.includes("Win")
+        ? `<html><body>\n<!--StartFragment-->${aStr}<!--EndFragment-->\n</body>\n</html>`
+        : aStr,
+      "ensure clipboard data is set"
+    );
+  }
+}
+
+function writeRandomStringToClipboard(
+  aFlavor,
+  aClipboardType,
+  aClipboardOwner = null,
+  aAsync = false
+) {
+  let randomString = generateRandomString();
+  writeStringToClipboard(
+    randomString,
+    aFlavor,
+    aClipboardType,
+    aClipboardOwner,
+    aAsync
+  );
+  return randomString;
+}
+
+function getClipboardData(aFlavor, aClipboardType) {
+  var trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+    Ci.nsITransferable
+  );
+  trans.init(null);
+  trans.addDataFlavor(aFlavor);
+  clipboard.getData(
+    trans,
+    aClipboardType,
+    SpecialPowers.wrap(window).browsingContext.currentWindowContext
+  );
+
+  try {
+    var data = SpecialPowers.createBlankObject();
+    trans.getTransferData(aFlavor, data);
+    return data.value.QueryInterface(SpecialPowers.Ci.nsISupportsString).data;
+  } catch (ex) {
+    // If the clipboard is empty getTransferData will throw.
+    return null;
+  }
+}
+
+function asyncGetClipboardData(aClipboardType) {
+  return new Promise((resolve, reject) => {
+    try {
+      clipboard.asyncGetData(
+        ["text/plain", "text/html", "image/png"],
+        aClipboardType,
+        null,
+        SpecialPowers.Services.scriptSecurityManager.getSystemPrincipal(),
+        {
+          QueryInterface: SpecialPowers.ChromeUtils.generateQI([
+            "nsIAsyncClipboardGetCallback",
+          ]),
+          // nsIAsyncClipboardGetCallback
+          onSuccess: SpecialPowers.wrapCallback(function (
+            aAsyncGetClipboardData
+          ) {
+            resolve(aAsyncGetClipboardData);
+          }),
+          onError: SpecialPowers.wrapCallback(function (aResult) {
+            reject(aResult);
+          }),
+        }
+      );
+    } catch (e) {
+      ok(false, `asyncGetData should not throw`);
+      reject(e);
+    }
+  });
+}
+
+function asyncClipboardRequestGetData(aRequest, aFlavor, aThrows = false) {
+  return new Promise((resolve, reject) => {
+    var trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+      Ci.nsITransferable
+    );
+    trans.init(null);
+    trans.addDataFlavor(aFlavor);
+    try {
+      aRequest.getData(trans, aResult => {
+        if (aResult != Cr.NS_OK) {
+          reject(aResult);
+          return;
+        }
+
+        try {
+          var data = SpecialPowers.createBlankObject();
+          trans.getTransferData(aFlavor, data);
+          resolve(data.value.QueryInterface(Ci.nsISupportsString).data);
+        } catch (ex) {
+          // XXX: should widget set empty string to transferable when there no
+          // data in system clipboard?
+          resolve("");
+        }
+      });
+      ok(
+        !aThrows,
+        `nsIAsyncGetClipboardData.getData should ${
+          aThrows ? "throw" : "success"
+        }`
+      );
+    } catch (e) {
+      ok(
+        aThrows,
+        `nsIAsyncGetClipboardData.getData should ${
+          aThrows ? "throw" : "success"
+        }`
+      );
+      reject(e);
+    }
+  });
+}
diff --git a/widget/tests/empty_window.xhtml b/widget/tests/empty_window.xhtml
new file mode 100644
index 0000000000..f0e01761d2
--- /dev/null
+++ b/widget/tests/empty_window.xhtml
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Empty window"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"/>
diff --git a/widget/tests/file_bug596600.html b/widget/tests/file_bug596600.html
new file mode 100644
index 0000000000..1b178a6b68
--- /dev/null
+++ b/widget/tests/file_bug596600.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<body>
+Content page
+</body>
diff --git a/widget/tests/file_ime_state_test_helper.js b/widget/tests/file_ime_state_test_helper.js
new file mode 100644
index 0000000000..0cee5c036f
--- /dev/null
+++ b/widget/tests/file_ime_state_test_helper.js
@@ -0,0 +1,197 @@
+"use strict";
+
+function IsIMEOpenStateSupported() {
+  // We support to control IME open state on Windows and Mac actually.  However,
+  // we cannot test it on Mac if the current keyboard layout is not CJK. And also
+  // we cannot test it on Win32 if the system didn't be installed IME. So,
+  // currently we should not run the open state testing.
+  return false;
+}
+
+/**
+ * @param {Node} aNode
+ */
+function nodeIsInShadowDOM(aNode) {
+  for (let node = aNode; node; node = node.parentNode) {
+    if (node instanceof ShadowRoot) {
+      return true;
+    }
+    if (node == node.parentNode) {
+      break;
+    }
+  }
+  return false;
+}
+
+/**
+ * @param {Node} aNode
+ */
+function nodeIsInDesignMode(aNode) {
+  return (
+    aNode.isConnected &&
+    !nodeIsInShadowDOM(aNode) &&
+    aNode.ownerDocument.designMode == "on"
+  );
+}
+
+/**
+ * param {Node} aNode
+ */
+function getEditingHost(aNode) {
+  if (nodeIsInDesignMode(aNode)) {
+    return aNode.ownerDocument.documentElement;
+  }
+  for (
+    let element =
+      aNode.nodeType == Node.ELEMENT_NODE ? aNode : aNode.parentElement;
+    element;
+    element = element.parentElement
+  ) {
+    const contenteditable = element.getAttribute("contenteditable");
+    if (contenteditable === "true" || contenteditable === "") {
+      return element;
+    }
+    if (contenteditable === "false") {
+      return null;
+    }
+  }
+  return null;
+}
+
+/**
+ * @param {Node} aNode
+ */
+function nodeIsEditable(aNode) {
+  if (nodeIsInDesignMode(aNode)) {
+    return true;
+  }
+  if (!aNode.isConnected) {
+    return false;
+  }
+  return getEditingHost(aNode) != null;
+}
+
+/**
+ * @param {Element} aElement
+ */
+function elementIsEditingHost(aElement) {
+  return (
+    nodeIsEditable(aElement) &&
+    (!aElement.parentElement || !getEditingHost(aElement) == aElement)
+  );
+}
+
+/**
+ * @returns {Element} Retrieve focused element.  If focused element is a element
+ *                    in UA widget, this returns its host element.  E.g., when
+ *                    a button in the controls of <audio> or <video> has focus,
+ *                    this returns the <video> or <audio>.
+ */
+function getFocusedElementOrUAWidgetHost() {
+  const focusedElement = SpecialPowers.focusManager.focusedElement;
+  if (SpecialPowers.wrap(focusedElement)?.containingShadowRoot?.isUAWidget()) {
+    return focusedElement.containingShadowRoot.host;
+  }
+  return focusedElement;
+}
+
+class TIPWrapper {
+  #mTIP = null;
+  #mFocusBlurNotifications = [];
+  #mFocusBlurListener;
+  #mWindow;
+
+  constructor(aWindow) {
+    this.#mWindow = aWindow;
+    this.#mTIP = Cc["@mozilla.org/text-input-processor;1"].createInstance(
+      Ci.nsITextInputProcessor
+    );
+    if (!this.beginInputTransactionForTests()) {
+      this.#mTIP = null;
+    }
+  }
+
+  beginInputTransactionForTests() {
+    return this.#mTIP.beginInputTransactionForTests(
+      this.#mWindow,
+      this.#observer.bind(this)
+    );
+  }
+
+  typeA() {
+    const AKey = new this.#mWindow.KeyboardEvent("", {
+      key: "a",
+      code: "KeyA",
+      keyCode: this.#mWindow.KeyboardEvent.DOM_VK_A,
+    });
+    this.#mTIP.keydown(AKey);
+    this.#mTIP.keyup(AKey);
+  }
+
+  isAvailable() {
+    return this.#mTIP != null;
+  }
+
+  #observer(aTIP, aNotification) {
+    if (aTIP != this.#mTIP) {
+      return false;
+    }
+    switch (aNotification.type) {
+      case "request-to-commit":
+        this.#mTIP.commitComposition();
+        break;
+      case "request-to-cancel":
+        this.#mTIP.cancelComposition();
+        break;
+      case "notify-focus":
+      case "notify-blur":
+        this.#mFocusBlurNotifications.push(aNotification.type);
+        if (this.#mFocusBlurListener) {
+          this.#mFocusBlurListener(aNotification.type);
+        }
+        break;
+    }
+    return true;
+  }
+
+  get TIP() {
+    return this.#mTIP;
+  }
+
+  /**
+   * @param {Function} aListener
+   */
+  set onIMEFocusBlur(aListener) {
+    this.#mFocusBlurListener = aListener;
+  }
+
+  get focusBlurNotifications() {
+    return this.#mFocusBlurNotifications.concat();
+  }
+
+  get numberOfFocusNotifications() {
+    return this.#mFocusBlurNotifications.filter(t => t == "notify-focus")
+      .length;
+  }
+  get numberOfBlurNotifications() {
+    return this.#mFocusBlurNotifications.filter(t => t == "notify-blur").length;
+  }
+
+  get IMEHasFocus() {
+    return (
+      !!this.#mFocusBlurNotifications.length &&
+      this.#mFocusBlurNotifications[this.#mFocusBlurNotifications.length - 1] ==
+        "notify-focus"
+    );
+  }
+
+  clearFocusBlurNotifications() {
+    this.#mFocusBlurNotifications = [];
+  }
+
+  destroy() {
+    this.#mTIP = null;
+    this.#mFocusBlurListener = null;
+    this.#mFocusBlurNotifications = [];
+  }
+}
diff --git a/widget/tests/file_input_events_on_deactive_window.html b/widget/tests/file_input_events_on_deactive_window.html
new file mode 100644
index 0000000000..e733adbb9d
--- /dev/null
+++ b/widget/tests/file_input_events_on_deactive_window.html
@@ -0,0 +1,5 @@
+<html>
+<body>
+  this is an active window.
+</body>
+</html>
diff --git a/widget/tests/file_secure_input.html b/widget/tests/file_secure_input.html
new file mode 100644
index 0000000000..28fec7b44b
--- /dev/null
+++ b/widget/tests/file_secure_input.html
@@ -0,0 +1 @@
+<input id="text" type"text"><input id="password" type"password">
diff --git a/widget/tests/file_test_clipboard.js b/widget/tests/file_test_clipboard.js
new file mode 100644
index 0000000000..76bdbaa84d
--- /dev/null
+++ b/widget/tests/file_test_clipboard.js
@@ -0,0 +1,153 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* import-globals-from clipboard_helper.js */
+
+"use strict";
+
+function getLoadContext() {
+  return SpecialPowers.wrap(window).docShell.QueryInterface(Ci.nsILoadContext);
+}
+
+// Get clipboard data to paste.
+function paste(clipboard) {
+  let trans = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+    Ci.nsITransferable
+  );
+  trans.init(getLoadContext());
+  trans.addDataFlavor("text/plain");
+  clipboard.getData(
+    trans,
+    Ci.nsIClipboard.kGlobalClipboard,
+    SpecialPowers.wrap(window).browsingContext.currentWindowContext
+  );
+  let str = SpecialPowers.createBlankObject();
+  try {
+    trans.getTransferData("text/plain", str);
+  } catch (e) {
+    str = "";
+  }
+  if (str) {
+    str = str.value.QueryInterface(Ci.nsISupportsString);
+    if (str) {
+      str = str.data;
+    }
+  }
+  return str;
+}
+
+add_setup(function init() {
+  cleanupAllClipboard();
+});
+
+/* Test for bug 948065 */
+add_task(function test_copy() {
+  // Test copy.
+  const data = "random number: " + Math.random();
+  let helper = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(
+    Ci.nsIClipboardHelper
+  );
+  helper.copyString(data);
+  is(paste(clipboard), data, "Data was successfully copied.");
+
+  clipboard.emptyClipboard(Ci.nsIClipboard.kGlobalClipboard);
+  is(paste(clipboard), "", "Data was successfully cleared.");
+
+  cleanupAllClipboard();
+});
+
+/* Tests for bug 1834073 */
+clipboardTypes.forEach(function (clipboardType) {
+  if (clipboard.isClipboardTypeSupported(clipboardType)) {
+    add_task(function test_clipboard_apis() {
+      info(`Test clipboard apis for type ${clipboardType}`);
+
+      // Set clipboard data
+      let str;
+      try {
+        str = writeRandomStringToClipboard("text/plain", clipboardType);
+      } catch (e) {
+        ok(
+          false,
+          `setData should not throw error for clipboard type ${clipboardType}`
+        );
+      }
+
+      // Test hasDataMatchingFlavors
+      try {
+        ok(
+          clipboard.hasDataMatchingFlavors(["text/plain"], clipboardType),
+          `Test hasDataMatchingFlavors for clipboard type ${clipboardType}`
+        );
+      } catch (e) {
+        ok(
+          false,
+          `hasDataMatchingFlavors should not throw error for clipboard type ${clipboardType}`
+        );
+      }
+
+      // Test getData
+      try {
+        is(
+          getClipboardData("text/plain", clipboardType),
+          str,
+          `Test getData for clipboard type ${clipboardType}`
+        );
+      } catch (e) {
+        ok(
+          false,
+          `getData should not throw error for clipboard type ${clipboardType}`
+        );
+      }
+    });
+
+    add_task(function test_clipboard_set_empty_string() {
+      info(`Test setting empty string to type ${clipboardType}`);
+
+      // Clear clipboard type.
+      clipboard.emptyClipboard(clipboardType);
+      is(
+        getClipboardData("text/plain", clipboardType),
+        null,
+        `Should get null data on clipboard type ${clipboardType}`
+      );
+      ok(
+        !clipboard.hasDataMatchingFlavors(["text/plain"], clipboardType),
+        `Should not have text/plain flavor on clipboard ${clipboardType}`
+      );
+
+      // Set text/plain to empty string.
+      writeStringToClipboard("", "text/plain", clipboardType);
+      // XXX gtk doesn't support get empty text data from clipboard, bug 1852983.
+      if (navigator.platform.includes("Linux")) {
+        todo_is(
+          getClipboardData("text/plain", clipboardType),
+          "",
+          `Should get empty string on clipboard type ${clipboardType}`
+        );
+      } else {
+        is(
+          getClipboardData("text/plain", clipboardType),
+          "",
+          `Should get empty string on clipboard type ${clipboardType}`
+        );
+      }
+      // XXX android doesn't support setting empty text data to clipboard, bug 1841058.
+      if (navigator.userAgent.includes("Android")) {
+        todo_is(
+          clipboard.hasDataMatchingFlavors(["text/plain"], clipboardType),
+          true,
+          `Should have text/plain flavor on clipboard ${clipboardType}`
+        );
+      } else {
+        ok(
+          clipboard.hasDataMatchingFlavors(["text/plain"], clipboardType),
+          `Should have text/plain flavor on clipboard ${clipboardType}`
+        );
+      }
+
+      // Clear all clipboard data.
+      cleanupAllClipboard();
+    });
+  }
+});
diff --git a/widget/tests/file_test_clipboard_asyncGetData.js b/widget/tests/file_test_clipboard_asyncGetData.js
new file mode 100644
index 0000000000..e7f2e5f0f1
--- /dev/null
+++ b/widget/tests/file_test_clipboard_asyncGetData.js
@@ -0,0 +1,170 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* import-globals-from clipboard_helper.js */
+
+"use strict";
+
+clipboardTypes.forEach(function (type) {
+  if (!clipboard.isClipboardTypeSupported(type)) {
+    add_task(async function test_clipboard_asyncGetData_not_support() {
+      info(`Test asyncGetData request throwing on ${type}`);
+      SimpleTest.doesThrow(
+        () => clipboard.asyncGetData(["text/plain"], type, {}),
+        "Passing unsupported clipboard type should throw"
+      );
+    });
+    return;
+  }
+
+  add_task(async function test_clipboard_asyncGetData_throw() {
+    info(`Test asyncGetData request throwing on ${type}`);
+    SimpleTest.doesThrow(
+      () => clipboard.asyncGetData([], type, {}),
+      "Passing empty flavor list should throw"
+    );
+
+    SimpleTest.doesThrow(
+      () => clipboard.asyncGetData(["text/plain"], type, null),
+      "Passing no callback should throw"
+    );
+  });
+
+  add_task(async function test_clipboard_asyncGetData_no_matched_flavor() {
+    info(`Test asyncGetData have no matched flavor on ${type}`);
+    cleanupAllClipboard();
+    is(getClipboardData("text/plain", type), null, "ensure clipboard is empty");
+
+    writeRandomStringToClipboard("text/plain", type);
+    let request = await new Promise(resolve => {
+      clipboard.asyncGetData(
+        ["text/html"],
+        type,
+        null,
+        SpecialPowers.Services.scriptSecurityManager.getSystemPrincipal(),
+        {
+          QueryInterface: SpecialPowers.ChromeUtils.generateQI([
+            "nsIAsyncClipboardGetCallback",
+          ]),
+          // nsIAsyncClipboardGetCallback
+          onSuccess: SpecialPowers.wrapCallback(function (
+            aAsyncGetClipboardData
+          ) {
+            resolve(aAsyncGetClipboardData);
+          }),
+        }
+      );
+    });
+    isDeeply(request.flavorList, [], "Check flavorList");
+  });
+
+  add_task(async function test_empty_data() {
+    info(`Test asyncGetData request with empty data on ${type}`);
+    cleanupAllClipboard();
+    is(getClipboardData("text/plain", type), null, "ensure clipboard is empty");
+
+    let request = await asyncGetClipboardData(type);
+    isDeeply(request.flavorList, [], "Check flavorList");
+    await asyncClipboardRequestGetData(request, "text/plain", true).catch(
+      () => {}
+    );
+  });
+
+  add_task(async function test_clipboard_asyncGetData_after_write() {
+    info(`Test asyncGetData request after write on ${type}`);
+
+    let str = writeRandomStringToClipboard("text/plain", type);
+    let request = await asyncGetClipboardData(type);
+    isDeeply(request.flavorList, ["text/plain"], "Check flavorList");
+    is(
+      await asyncClipboardRequestGetData(request, "text/plain"),
+      str,
+      "Check data"
+    );
+    ok(request.valid, "request should still be valid");
+    // Requesting a flavor that is not in the list should throw error.
+    await asyncClipboardRequestGetData(request, "text/html", true).catch(
+      () => {}
+    );
+    ok(request.valid, "request should still be valid");
+
+    // Writing a new data should invalid existing get request.
+    str = writeRandomStringToClipboard("text/plain", type);
+    await asyncClipboardRequestGetData(request, "text/plain").then(
+      () => {
+        ok(false, "asyncClipboardRequestGetData should not success");
+      },
+      e => {
+        ok(true, "asyncClipboardRequestGetData should reject");
+      }
+    );
+    ok(!request.valid, "request should no longer be valid");
+
+    info(`check clipboard data again`);
+    request = await asyncGetClipboardData(type);
+    isDeeply(request.flavorList, ["text/plain"], "Check flavorList");
+    is(
+      await asyncClipboardRequestGetData(request, "text/plain"),
+      str,
+      "Check data"
+    );
+
+    cleanupAllClipboard();
+  });
+
+  add_task(async function test_clipboard_asyncGetData_after_empty() {
+    info(`Test asyncGetData request after empty on ${type}`);
+
+    let str = writeRandomStringToClipboard("text/plain", type);
+    let request = await asyncGetClipboardData(type);
+    isDeeply(request.flavorList, ["text/plain"], "Check flavorList");
+    is(
+      await asyncClipboardRequestGetData(request, "text/plain"),
+      str,
+      "Check data"
+    );
+    ok(request.valid, "request should still be valid");
+
+    // Empty clipboard data
+    emptyClipboardData(type);
+    is(getClipboardData("text/plain", type), null, "ensure clipboard is empty");
+
+    await asyncClipboardRequestGetData(request, "text/plain").then(
+      () => {
+        ok(false, "asyncClipboardRequestGetData should not success");
+      },
+      e => {
+        ok(true, "asyncClipboardRequestGetData should reject");
+      }
+    );
+    ok(!request.valid, "request should no longer be valid");
+
+    info(`check clipboard data again`);
+    request = await asyncGetClipboardData(type);
+    isDeeply(request.flavorList, [], "Check flavorList");
+
+    cleanupAllClipboard();
+  });
+});
+
+add_task(async function test_html_data() {
+  info(`Test asyncGetData request with html data`);
+
+  const html_str = `<img src="https://example.com/oops">`;
+  writeStringToClipboard(html_str, "text/html", clipboard.kGlobalClipboard);
+
+  let request = await asyncGetClipboardData(clipboard.kGlobalClipboard);
+  isDeeply(request.flavorList, ["text/html"], "Check flavorList");
+  is(
+    await asyncClipboardRequestGetData(request, "text/html"),
+    // On Windows, widget adds extra data into HTML clipboard.
+    navigator.platform.includes("Win")
+      ? `<html><body>\n<!--StartFragment-->${html_str}<!--EndFragment-->\n</body>\n</html>`
+      : html_str,
+    "Check data"
+  );
+  // Requesting a flavor that is not in the list should throw error.
+  await asyncClipboardRequestGetData(request, "text/plain", true).catch(
+    () => {}
+  );
+});
diff --git a/widget/tests/file_test_clipboard_asyncSetData.js b/widget/tests/file_test_clipboard_asyncSetData.js
new file mode 100644
index 0000000000..cceecd2c44
--- /dev/null
+++ b/widget/tests/file_test_clipboard_asyncSetData.js
@@ -0,0 +1,179 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* import-globals-from clipboard_helper.js */
+
+"use strict";
+
+clipboardTypes.forEach(function (type) {
+  if (clipboard.isClipboardTypeSupported(type)) {
+    clipboardTypes.forEach(function (otherType) {
+      if (clipboard.isClipboardTypeSupported(otherType)) {
+        [true, false].forEach(async function (async) {
+          add_task(async function test_clipboard_pending_asyncSetData() {
+            info(
+              `Test having a pending asyncSetData request on ${type} and then make a new ${
+                async ? "asyncSetData" : "setData"
+              } request on ${otherType}`
+            );
+
+            // Create a pending asyncSetData request
+            let priorResult;
+            let priorRequest;
+            let priorPromise = new Promise(resolve => {
+              priorRequest = clipboard.asyncSetData(type, {
+                QueryInterface: SpecialPowers.ChromeUtils.generateQI([
+                  "nsIAsyncSetClipboardDataCallback",
+                ]),
+                onComplete(rv) {
+                  priorResult = rv;
+                  resolve();
+                },
+              });
+            });
+
+            // Create a new request
+            let str = writeRandomStringToClipboard(
+              "text/plain",
+              otherType,
+              null,
+              async
+            );
+
+            if (type === otherType) {
+              info(
+                "The new request to the same clipboard type should cancel the prior pending request"
+              );
+              await priorPromise;
+
+              is(
+                priorResult,
+                Cr.NS_ERROR_ABORT,
+                "The pending asyncSetData request should be canceled"
+              );
+              try {
+                priorRequest.setData(
+                  generateNewTransferable("text/plain", generateRandomString())
+                );
+                ok(
+                  false,
+                  "An error should be thrown if setData is called on a canceled clipboard request"
+                );
+              } catch (e) {
+                is(
+                  e.result,
+                  Cr.NS_ERROR_FAILURE,
+                  "An error should be thrown if setData is called on a canceled clipboard request"
+                );
+              }
+            } else {
+              info(
+                "The new request to the different clipboard type should not cancel the prior pending request"
+              );
+              str = generateRandomString();
+              priorRequest.setData(
+                generateNewTransferable("text/plain", str),
+                null
+              );
+              await priorPromise;
+
+              is(
+                priorResult,
+                Cr.NS_OK,
+                "The pending asyncSetData request should success"
+              );
+
+              try {
+                priorRequest.setData(
+                  generateNewTransferable("text/plain", generateRandomString())
+                );
+                ok(
+                  false,
+                  "Calling setData multiple times should throw an error"
+                );
+              } catch (e) {
+                is(
+                  e.result,
+                  Cr.NS_ERROR_FAILURE,
+                  "Calling setData multiple times should throw an error"
+                );
+              }
+            }
+
+            // Test clipboard data.
+            is(
+              getClipboardData("text/plain", type),
+              str,
+              `Test clipboard data for type ${type}`
+            );
+
+            // Clean clipboard data.
+            cleanupAllClipboard();
+          });
+        });
+      }
+    });
+
+    add_task(async function test_clipboard_asyncSetData_abort() {
+      info(`Test abort asyncSetData request on ${type}`);
+
+      // Create a pending asyncSetData request
+      let result;
+      let request = clipboard.asyncSetData(type, rv => {
+        result = rv;
+      });
+
+      // Abort with NS_OK.
+      try {
+        request.abort(Cr.NS_OK);
+        ok(false, "Throw an error when attempting to abort with NS_OK");
+      } catch (e) {
+        is(
+          e.result,
+          Cr.NS_ERROR_FAILURE,
+          "Should throw an error when attempting to abort with NS_OK"
+        );
+      }
+      is(result, undefined, "The asyncSetData request should not be canceled");
+
+      // Abort with NS_ERROR_ABORT.
+      request.abort(Cr.NS_ERROR_ABORT);
+      is(
+        result,
+        Cr.NS_ERROR_ABORT,
+        "The asyncSetData request should be canceled"
+      );
+      try {
+        request.abort(Cr.NS_ERROR_FAILURE);
+        ok(false, "Throw an error when attempting to abort again");
+      } catch (e) {
+        is(
+          e.result,
+          Cr.NS_ERROR_FAILURE,
+          "Should throw an error when attempting to abort again"
+        );
+      }
+      is(
+        result,
+        Cr.NS_ERROR_ABORT,
+        "The callback should not be notified again"
+      );
+
+      try {
+        request.setData(
+          generateNewTransferable("text/plain", generateRandomString())
+        );
+        ok(
+          false,
+          "An error should be thrown if setData is called on a canceled clipboard request"
+        );
+      } catch (e) {
+        is(
+          e.result,
+          Cr.NS_ERROR_FAILURE,
+          "An error should be thrown if setData is called on a canceled clipboard request"
+        );
+      }
+    });
+  }
+});
diff --git a/widget/tests/file_test_ime_state_in_contenteditable_on_readonly_change.js b/widget/tests/file_test_ime_state_in_contenteditable_on_readonly_change.js
new file mode 100644
index 0000000000..9f1ab2d305
--- /dev/null
+++ b/widget/tests/file_test_ime_state_in_contenteditable_on_readonly_change.js
@@ -0,0 +1,616 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+
+class IMEStateInContentEditableOnReadonlyChangeTester {
+  // Runner only fields.
+  #mEditingHost;
+  #mFocusElement;
+  #mWindow;
+
+  // Tester only fields.
+  #mTIPWrapper;
+  #mWindowUtils;
+
+  clear() {
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  #flushPendingIMENotifications() {
+    return new Promise(resolve =>
+      this.#mWindow.requestAnimationFrame(() =>
+        this.#mWindow.requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  #getExpectedIMEState() {
+    // Although if this.#mFocusElement is a <button>, its `.focus()` call
+    // focus it, but caret is not set into it and following typing is handled
+    // outside the <button>.  Therefore, anyway the enabled state should be
+    // "enabled".
+    return SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  /**
+   * @param {Element} aEditingHost  The editing host.
+   * @param {Element} aFocusElement Element which should have focus.  This must
+   * be an inclusive descendant of the editing host and editable element.
+   * @param {Window} aWindow [optional] The window.
+   * @returns {object} Expected result of initial state.
+   */
+  async prepareToRun(aEditingHost, aFocusElement, aWindow = window) {
+    this.#mWindow = aWindow;
+    this.#mEditingHost = aEditingHost;
+    this.#mFocusElement = aFocusElement;
+
+    if (this.#mEditingHost.ownerDocument.activeElement) {
+      this.#mEditingHost.ownerDocument.activeElement.blur();
+      await this.#flushPendingIMENotifications();
+    }
+
+    this.#mWindow.focus();
+    this.#mEditingHost.setAttribute("contenteditable", "");
+    this.#mFocusElement.focus();
+
+    await this.#flushPendingIMENotifications();
+
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when initialized with setting focus to ${
+        this.#mFocusElement == this.#mEditingHost
+          ? "the editing host"
+          : `<${this.#mFocusElement.tagName.toLowerCase()}>`
+      }`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result of the test.
+   */
+  #checkResult(aExpectedResult) {
+    const description = `IMEStateInContentEditableOnReadonlyChangeTester`;
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedResult.expectedIMEState,
+      `${description}: IME enabled state should be expected one ${aExpectedResult.description}`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedResult.expectedIMEFocus,
+      `${description}: IME should ${
+        aExpectedResult.expectedIMEFocus ? "" : "not "
+      }have focus ${aExpectedResult.description}`
+    );
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result of prepareToRun().
+   * @param {Window} aWindow The window to check IME state.
+   * @param {TIPWrapper} aTIPWrapper The TIPWrapper for aWindow.
+   */
+  checkResultOfPreparation(aExpectedResult, aWindow, aTIPWrapper) {
+    this.#mWindowUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    this.#mTIPWrapper = aTIPWrapper;
+    this.#checkResult(aExpectedResult);
+  }
+
+  /**
+   * @returns {object} The expected result.
+   */
+  async runToMakeHTMLEditorReadonly() {
+    const htmlEditor = SpecialPowers.wrap(this.#mWindow).docShell.editor;
+    htmlEditor.flags |= SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+
+    await this.#flushPendingIMENotifications();
+
+    return {
+      description:
+        this.#mFocusElement == this.#mEditingHost
+          ? "when the editing host has focus"
+          : `when <${this.#mFocusElement.tagName.toLowerCase()}> has focus`,
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      expectedIMEFocus: false,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result of runToMakeHTMLEditorReadonly().
+   */
+  checkResultOfMakingHTMLEditorReadonly(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  /**
+   * @returns {object} The expected result.
+   */
+  async runToMakeHTMLEditorEditable() {
+    const htmlEditor = SpecialPowers.wrap(this.#mWindow).docShell.editor;
+    htmlEditor.flags &= ~SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+
+    await this.#flushPendingIMENotifications();
+
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description:
+        this.#mFocusElement == this.#mEditingHost
+          ? "when the editing host has focus"
+          : `when <${this.#mFocusElement.tagName.toLowerCase()}> has focus`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result of runToMakeHTMLEditorEditable().
+   */
+  checkResultOfMakingHTMLEditorEditable(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToRemoveContentEditableAttribute() {
+    this.#mEditingHost.removeAttribute("contenteditable");
+
+    await this.#flushPendingIMENotifications();
+
+    return {
+      description:
+        this.#mFocusElement == this.#mEditingHost
+          ? "after removing contenteditable attribute when the editing host has focus"
+          : `after removing contenteditable attribute when <${this.#mFocusElement.tagName.toLowerCase()}> has focus`,
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      expectedIMEFocus: false,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result of runToRemoveContentEditableAttribute().
+   */
+  checkResultOfRemovingContentEditableAttribute(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+}
+
+class IMEStateOfTextControlInContentEditableOnReadonlyChangeTester {
+  static #sTextControls = [
+    {
+      tag: "input",
+      type: "text",
+      readonly: false,
+    },
+    {
+      tag: "input",
+      type: "text",
+      readonly: true,
+    },
+    {
+      tag: "textarea",
+      readonly: false,
+    },
+    {
+      tag: "textarea",
+      readonly: true,
+    },
+  ];
+
+  static get numberOfTextControlTypes() {
+    return IMEStateOfTextControlInContentEditableOnReadonlyChangeTester
+      .#sTextControls.length;
+  }
+
+  static #createElement(aDocument, aTextControl) {
+    const textControl = aDocument.createElement(aTextControl.tag);
+    if (aTextControl.type !== undefined) {
+      textControl.setAttribute("type", aTextControl.type);
+    }
+    if (aTextControl.readonly) {
+      textControl.setAttribute("readonly", "");
+    }
+    return textControl;
+  }
+
+  #getDescription() {
+    return `<${this.#mTextControl.tag}${
+      this.#mTextControl.type !== undefined
+        ? ` type=${this.#mTextControl.type}`
+        : ""
+    }${this.#mTextControl.readonly ? " readonly" : ""}>`;
+  }
+
+  #getExpectedIMEState() {
+    return this.#mTextControl.readonly
+      ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED
+      : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  #flushPendingIMENotifications() {
+    return new Promise(resolve =>
+      this.#mWindow.requestAnimationFrame(() =>
+        this.#mWindow.requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  // Runner only fields.
+  #mEditingHost;
+  #mTextControl;
+  #mTextControlElement;
+  #mWindow;
+
+  // Checker only fields.
+  #mWindowUtils;
+  #mTIPWrapper;
+
+  clear() {
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  /**
+   * @param {number} aIndex Index of the test.
+   * @param {Element} aEditingHost The editing host which will have a text control.
+   * @param {Window} aWindow [optional] The DOM window containing aEditingHost.
+   * @returns {object} Expected result of initial state.
+   */
+  async prepareToRun(aIndex, aEditingHost, aWindow = window) {
+    this.#mWindow = aWindow;
+    this.#mEditingHost = aEditingHost;
+    this.#mEditingHost.ownerDocument.activeElement?.blur();
+    this.#mEditingHost.removeAttribute("contenteditable");
+    this.#mTextControlElement?.remove();
+    await this.#flushPendingIMENotifications();
+    this.#mTextControl =
+      IMEStateOfTextControlInContentEditableOnReadonlyChangeTester.#sTextControls[
+        aIndex
+      ];
+    this.#mTextControlElement =
+      IMEStateOfTextControlInContentEditableOnReadonlyChangeTester.#createElement(
+        this.#mEditingHost.ownerDocument,
+        this.#mTextControl
+      );
+    this.#mEditingHost.appendChild(this.#mTextControlElement);
+    this.#mTextControlElement.focus();
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when ${this.#getDescription()} simply has focus`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  #checkResult(aExpectedResult) {
+    const description =
+      "IMEStateOfTextControlInContentEditableOnReadonlyChangeTester";
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedResult.expectedIMEState,
+      `${description}: IME state should be proper one for the text control ${aExpectedResult.description}`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedResult.expectedIMEFocus,
+      `${description}: IME should ${
+        aExpectedResult.expectedIMEFocus ? "" : "not "
+      }have focus ${aExpectedResult.description}`
+    );
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result returned by prepareToRun().
+   * @param {Window} aWindow The window whose IME state should be checked.
+   * @param {TIPWrapper} aTIPWrapper The TIP wrapper of aWindow.
+   */
+  checkResultOfPreparation(aExpectedResult, aWindow, aTIPWrapper) {
+    this.#mWindowUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    this.#mTIPWrapper = aTIPWrapper;
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeParentEditingHost() {
+    this.#mEditingHost.setAttribute("contenteditable", "");
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when parent of ${this.#getDescription()} becomes contenteditable`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingParentEditingHost(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeHTMLEditorReadonly() {
+    const editor = SpecialPowers.wrap(this.#mWindow).docShell.editor;
+    editor.flags |= SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when HTMLEditor for parent of ${this.#getDescription()} becomes readonly`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingHTMLEditorReadonly(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeHTMLEditorEditable() {
+    const editor = SpecialPowers.wrap(this.#mWindow).docShell.editor;
+    editor.flags &= ~SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when HTMLEditor for parent of ${this.#getDescription()} becomes editable`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingHTMLEditorEditable(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeParentNonEditingHost() {
+    this.#mEditingHost.removeAttribute("contenteditable");
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when parent of ${this.#getDescription()} becomes non-editable`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingParentNonEditable(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+}
+
+class IMEStateOutsideContentEditableOnReadonlyChangeTester {
+  static #sFocusTargets = [
+    {
+      tag: "input",
+      type: "text",
+      readonly: false,
+    },
+    {
+      tag: "input",
+      type: "text",
+      readonly: true,
+    },
+    {
+      tag: "textarea",
+      readonly: false,
+    },
+    {
+      tag: "textarea",
+      readonly: true,
+    },
+    {
+      tag: "button",
+    },
+    {
+      tag: "body",
+    },
+  ];
+
+  static get numberOfFocusTargets() {
+    return IMEStateOutsideContentEditableOnReadonlyChangeTester.#sFocusTargets
+      .length;
+  }
+
+  static #maybeCreateElement(aDocument, aFocusTarget) {
+    if (aFocusTarget.tag == "body") {
+      return null;
+    }
+    const element = aDocument.createElement(aFocusTarget.tag);
+    if (aFocusTarget.type !== undefined) {
+      element.setAttribute("type", aFocusTarget.type);
+    }
+    if (aFocusTarget.readonly) {
+      element.setAttribute("readonly", "");
+    }
+    return element;
+  }
+
+  #getDescription() {
+    return `<${this.#mFocusTarget.tag}${
+      this.#mFocusTarget.type !== undefined
+        ? ` type=${this.#mFocusTarget.type}`
+        : ""
+    }${this.#mFocusTarget.readonly ? " readonly" : ""}>`;
+  }
+
+  #getExpectedIMEState() {
+    return this.#mFocusTarget.readonly ||
+      this.#mFocusTarget.tag == "button" ||
+      this.#mFocusTarget.tag == "body"
+      ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED
+      : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  #flushPendingIMENotifications() {
+    return new Promise(resolve =>
+      this.#mWindow.requestAnimationFrame(() =>
+        this.#mWindow.requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  // Runner only fields.
+  #mBody;
+  #mEditingHost;
+  #mFocusTarget;
+  #mFocusTargetElement;
+  #mWindow;
+
+  // Checker only fields.
+  #mWindowUtils;
+  #mTIPWrapper;
+
+  clear() {
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  /**
+   * @param {number} aIndex Index of the test.
+   * @param {Element} aEditingHost The editing host.
+   * @param {Window} aWindow [optional] The DOM window containing aEditingHost.
+   * @returns {object} Expected result of initial state.
+   */
+  async prepareToRun(aIndex, aEditingHost, aWindow = window) {
+    this.#mWindow = aWindow;
+    this.#mEditingHost = aEditingHost;
+    this.#mEditingHost.removeAttribute("contenteditable");
+    this.#mBody = this.#mEditingHost.ownerDocument.body;
+    this.#mBody.ownerDocument.activeElement?.blur();
+    if (this.#mFocusTargetElement != this.#mBody) {
+      this.#mFocusTargetElement?.remove();
+    }
+    await this.#flushPendingIMENotifications();
+    this.#mFocusTarget =
+      IMEStateOutsideContentEditableOnReadonlyChangeTester.#sFocusTargets[
+        aIndex
+      ];
+    this.#mFocusTargetElement =
+      IMEStateOutsideContentEditableOnReadonlyChangeTester.#maybeCreateElement(
+        this.#mBody.ownerDocument,
+        this.#mFocusTarget
+      );
+    if (this.#mFocusTargetElement) {
+      this.#mBody.appendChild(this.#mFocusTargetElement);
+      this.#mFocusTargetElement.focus();
+    }
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when ${this.#getDescription()} simply has focus`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  #checkResult(aExpectedResult) {
+    const description = "IMEStateOutsideContentEditableOnReadonlyChangeTester";
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedResult.expectedIMEState,
+      `${description}: IME state should be proper one for the focused element ${aExpectedResult.description}`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedResult.expectedIMEFocus,
+      `${description}: IME should ${
+        aExpectedResult.expectedIMEFocus ? "" : "not "
+      }have focus ${aExpectedResult.description}`
+    );
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result returned by prepareToRun().
+   * @param {Window} aWindow The window whose IME state should be checked.
+   * @param {TIPWrapper} aTIPWrapper The TIP wrapper of aWindow.
+   */
+  checkResultOfPreparation(aExpectedResult, aWindow, aTIPWrapper) {
+    this.#mWindowUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    this.#mTIPWrapper = aTIPWrapper;
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeParentEditingHost() {
+    this.#mEditingHost.setAttribute("contenteditable", "");
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when parent of ${this.#getDescription()} becomes contenteditable`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingParentEditingHost(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeHTMLEditorReadonly() {
+    const editor = SpecialPowers.wrap(this.#mWindow).docShell.editor;
+    editor.flags |= SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when HTMLEditor for parent of ${this.#getDescription()} becomes readonly`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingHTMLEditorReadonly(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeHTMLEditorEditable() {
+    const editor = SpecialPowers.wrap(this.#mWindow).docShell.editor;
+    editor.flags &= ~SpecialPowers.Ci.nsIEditor.eEditorReadonlyMask;
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when HTMLEditor for parent of ${this.#getDescription()} becomes editable`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingHTMLEditorEditable(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+
+  async runToMakeParentNonEditingHost() {
+    this.#mEditingHost.removeAttribute("contenteditable");
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when parent of ${this.#getDescription()} becomes non-editable`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResultOfMakingParentNonEditable(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+  }
+}
diff --git a/widget/tests/file_test_ime_state_in_text_control_on_reframe.js b/widget/tests/file_test_ime_state_in_text_control_on_reframe.js
new file mode 100644
index 0000000000..719022b889
--- /dev/null
+++ b/widget/tests/file_test_ime_state_in_text_control_on_reframe.js
@@ -0,0 +1,190 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+
+// Bug 580388 and bug 808287
+class IMEStateInTextControlOnReframeTester {
+  static #sTextControls = [
+    {
+      tag: "input",
+      type: "text",
+    },
+    {
+      tag: "input",
+      type: "password",
+    },
+    {
+      tag: "textarea",
+    },
+  ];
+
+  static get numberOfTextControlTypes() {
+    return IMEStateInTextControlOnReframeTester.#sTextControls.length;
+  }
+
+  #createElement() {
+    const textControl = this.#mDocument.createElement(this.#mTextControl.tag);
+    if (this.#mTextControl.type !== undefined) {
+      textControl.setAttribute("type", this.#mTextControl.type);
+    }
+    return textControl;
+  }
+
+  #getDescription() {
+    return `<${this.#mTextControl.tag}${
+      this.#mTextControl.type !== undefined
+        ? ` type=${this.#mTextControl.type}`
+        : ""
+    }>`;
+  }
+
+  #getExpectedIMEState() {
+    return this.#mTextControl.type == "password"
+      ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_PASSWORD
+      : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  #flushPendingIMENotifications() {
+    return new Promise(resolve =>
+      this.#mWindow.requestAnimationFrame(() =>
+        this.#mWindow.requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  // Runner only fields.
+  #mTextControl;
+  #mTextControlElement;
+  #mWindow;
+  #mDocument;
+
+  // Checker only fields.
+  #mWindowUtils;
+  #mTIPWrapper;
+
+  clear() {
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  /**
+   * @param {number} aIndex Index of the test.
+   * @param {Element} aDocument The document to run the test.
+   * @param {Window} aWindow [optional] The DOM window for aDocument.
+   * @returns {object} Expected result of initial state.
+   */
+  async prepareToRun(aIndex, aDocument, aWindow = window) {
+    this.#mWindow = aWindow;
+    this.#mDocument = aDocument;
+    this.#mDocument.activeElement?.blur();
+    this.#mTextControlElement?.remove();
+    await this.#flushPendingIMENotifications();
+    this.#mTextControl =
+      IMEStateInTextControlOnReframeTester.#sTextControls[aIndex];
+    this.#mTextControlElement = this.#createElement();
+    this.#mDocument.body.appendChild(this.#mTextControlElement);
+    this.#mTextControlElement.focus();
+    this.#mTextControlElement.style.overflow = "visible";
+    this.#mTextControlElement.addEventListener(
+      "input",
+      aEvent => {
+        aEvent.target.style.overflow = "hidden";
+      },
+      {
+        capture: true,
+      }
+    );
+    await this.#flushPendingIMENotifications();
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when ${this.#getDescription()} has focus`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      expectedNumberOfFocusNotifications: 1,
+    };
+  }
+
+  #checkResult(aExpectedResult) {
+    const description = "IMEStateInTextControlOnReframeTester";
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedResult.expectedIMEState,
+      `${description}: IME state should be proper one for the text control ${aExpectedResult.description}`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedResult.expectedIMEFocus,
+      `${description}: IME should ${
+        aExpectedResult.expectedIMEFocus ? "" : "not "
+      }have focus ${aExpectedResult.description}`
+    );
+    if (aExpectedResult.numberOfFocusNotifications !== undefined) {
+      is(
+        this.#mTIPWrapper.numberOfFocusNotifications,
+        aExpectedResult.numberOfFocusNotifications,
+        `${description}: focus notifications should've been received ${
+          this.#mTIPWrapper.numberOfFocusNotifications
+        } times ${aExpectedResult.description}`
+      );
+    }
+    if (aExpectedResult.numberOfBlurNotifications !== undefined) {
+      is(
+        this.#mTIPWrapper.numberOfBlurNotifications,
+        aExpectedResult.numberOfBlurNotifications,
+        `${description}: blur notifications should've been received ${
+          this.#mTIPWrapper.numberOfBlurNotifications
+        } times ${aExpectedResult.description}`
+      );
+    }
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result returned by prepareToRun().
+   * @param {Window} aWindow The window whose IME state should be checked.
+   * @param {TIPWrapper} aTIPWrapper The TIP wrapper of aWindow.
+   */
+  checkResultAfterTypingA(aExpectedResult, aWindow, aTIPWrapper) {
+    this.#mWindowUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    this.#mTIPWrapper = aTIPWrapper;
+    this.#checkResult(aExpectedResult);
+
+    this.#mTIPWrapper.clearFocusBlurNotifications();
+  }
+
+  async prepareToRun2() {
+    this.#mTextControlElement.addEventListener("focus", aEvent => {
+      // Perform a style change and flush it to trigger reframing.
+      aEvent.target.style.overflow = "visible";
+      aEvent.target.getBoundingClientRect();
+    });
+    this.#mTextControlElement.blur();
+    this.#mTextControlElement.focus();
+
+    await this.#flushPendingIMENotifications();
+
+    const expectedIMEState = this.#getExpectedIMEState();
+    return {
+      description: `when ${this.#getDescription()} is reframed by focus event listener`,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      expectedNumberOfFocusNotifications: 1,
+      expectedNumberOfBlurNotifications: 1,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedResult The expected result returned by prepareToRun().
+   */
+  checkResultAfterTypingA2(aExpectedResult) {
+    this.#checkResult(aExpectedResult);
+
+    this.#mTIPWrapper.clearFocusBlurNotifications();
+  }
+}
diff --git a/widget/tests/file_test_ime_state_on_focus_move.js b/widget/tests/file_test_ime_state_on_focus_move.js
new file mode 100644
index 0000000000..f7760d8a09
--- /dev/null
+++ b/widget/tests/file_test_ime_state_on_focus_move.js
@@ -0,0 +1,1588 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+
+class IMEStateWhenNoActiveElementTester {
+  #mDescription;
+
+  constructor(aDescription) {
+    this.#mDescription = aDescription;
+  }
+
+  async run(aDocument, aWindow = window) {
+    aWindow.focus();
+    aDocument.activeElement?.blur();
+
+    await new Promise(resolve =>
+      requestAnimationFrame(() => requestAnimationFrame(resolve))
+    ); // wait for sending IME notifications
+
+    return { designModeValue: aDocument.designMode };
+  }
+
+  check(aExpectedData, aWindow = window) {
+    const winUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    if (aExpectedData.designModeValue == "on") {
+      is(
+        winUtils.IMEStatus,
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+        `IMEStateWhenNoActiveElementTester(${
+          this.#mDescription
+        }): When no element has focus, IME should stay enabled in design mode`
+      );
+    } else {
+      is(
+        winUtils.IMEStatus,
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+        `IMEStateWhenNoActiveElementTester(${
+          this.#mDescription
+        }): When no element has focus, IME should be disabled`
+      );
+    }
+  }
+}
+
+class IMEStateOnFocusMoveTester {
+  // Common fields
+  #mDescription;
+  #mTest;
+  #mWindow;
+  #mWindowUtils;
+
+  // Only runner fields
+  #mCreatedElement;
+  #mCreatedElementForPreviousFocusedElement;
+  #mElementToSetFocus;
+  #mContainerIsEditable;
+
+  // Only checker fields
+  #mTIPWrapper;
+
+  constructor(aDescription, aIndex, aWindow = window) {
+    this.#mTest = IMEStateOnFocusMoveTester.#sTestList[aIndex];
+    this.#mDescription = `IMEStateOnFocusMoveTester(${aDescription}): ${
+      this.#mTest.description
+    }`;
+    this.#mWindow = aWindow;
+    this.#mWindowUtils = SpecialPowers.wrap(this.#mWindow).windowUtils;
+  }
+
+  /**
+   * prepareToRun should be called before run only in the process which will run the test.
+   */
+  async prepareToRun(aContainer) {
+    const doc = aContainer.ownerDocument;
+    this.#mTest = this.#resolveTest(this.#mTest, aContainer);
+    this.#mContainerIsEditable = nodeIsEditable(aContainer);
+    this.#mCreatedElement = this.#mTest.createElement(doc);
+    const waitForLoadIfIFrame = new Promise(resolve => {
+      if (this.#mCreatedElement.tagName == "IFRAME") {
+        this.#mCreatedElement.addEventListener("load", resolve, {
+          capture: true,
+          once: true,
+        });
+      } else {
+        resolve();
+      }
+    });
+    aContainer.appendChild(this.#mCreatedElement);
+    await waitForLoadIfIFrame;
+    this.#mElementToSetFocus = this.#mCreatedElement.contentDocument
+      ? this.#mCreatedElement.contentDocument.documentElement
+      : this.#mCreatedElement;
+    if (doc.designMode == "on") {
+      doc.activeElement?.blur();
+    } else if (this.#mContainerIsEditable) {
+      getEditingHost(aContainer).focus(); // FIXME: use editing host instead
+    } else {
+      this.#mCreatedElementForPreviousFocusedElement =
+        doc.createElement("input");
+      this.#mCreatedElementForPreviousFocusedElement.setAttribute(
+        "type",
+        this.#mTest.expectedEnabledValue ==
+          SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED
+          ? "password"
+          : "text"
+      );
+      aContainer.appendChild(this.#mCreatedElementForPreviousFocusedElement);
+      this.#mCreatedElementForPreviousFocusedElement.focus();
+    }
+
+    await new Promise(resolve =>
+      requestAnimationFrame(() => requestAnimationFrame(resolve))
+    ); // wait for sending IME notifications
+
+    return {
+      designModeValue: doc.designMode,
+      containerIsEditable: this.#mContainerIsEditable,
+      isFocusable: this.#mTest.isFocusable,
+      focusEventFired: this.#mTest.focusEventIsExpected,
+      enabledValue: this.#mTest.expectedEnabledValue,
+      testedSubDocumentInDesignMode:
+        this.#mCreatedElement.contentDocument?.designMode == "on",
+    };
+  }
+
+  /**
+   * prepareToCheck should be called before calling run only in the process which will check the result.
+   */
+  prepareToCheck(aExpectedData, aTIPWrapper) {
+    info(`Starting ${this.#mDescription} (enable state check)...`);
+    this.#mTIPWrapper = aTIPWrapper;
+    this.#mTIPWrapper.onIMEFocusBlur = aNotificationType => {
+      switch (aNotificationType) {
+        case "notify-focus":
+          info(aNotificationType);
+          is(
+            this.#mWindowUtils.IMEStatus,
+            aExpectedData.enabledValue,
+            `${
+              this.#mDescription
+            }, IME should receive a focus notification after IME state is updated`
+          );
+          break;
+        case "notify-blur":
+          info(aNotificationType);
+          const changingStatus = !(
+            aExpectedData.containerIsEditable &&
+            aExpectedData.enabledValue ==
+              SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED
+          );
+          if (aExpectedData.designModeValue == "on") {
+            is(
+              // FIXME: This is odd, but #mWindowUtils.IMEStatus sometimes IME_STATUS_PASSWORD
+              SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+              aExpectedData.enabledValue,
+              `${
+                this.#mDescription
+              }, IME should receive a blur notification after IME state is updated`
+            );
+          } else if (changingStatus) {
+            isnot(
+              this.#mWindowUtils.IMEStatus,
+              aExpectedData.enabledValue,
+              `${
+                this.#mDescription
+              }, IME should receive a blur notification BEFORE IME state is updated`
+            );
+          } else {
+            is(
+              this.#mWindowUtils.IMEStatus,
+              aExpectedData.enabledValue,
+              `${
+                this.#mDescription
+              }, IME should receive a blur notification and its context has expected IME state if the state isn't being changed`
+            );
+          }
+          break;
+      }
+    };
+
+    this.#mTIPWrapper.clearFocusBlurNotifications();
+  }
+
+  /**
+   * @returns {bool} whether expected element has focus or not after moving focus.
+   */
+  async run() {
+    const previousFocusedElement = getFocusedElementOrUAWidgetHost();
+    if (this.#mTest.setFocusIntoUAWidget) {
+      this.#mTest.setFocusIntoUAWidget(this.#mElementToSetFocus);
+    } else {
+      this.#mElementToSetFocus.focus();
+    }
+
+    await new Promise(resolve =>
+      requestAnimationFrame(() => requestAnimationFrame(resolve))
+    ); // wait for sending IME notifications
+
+    const currentFocusedElement = getFocusedElementOrUAWidgetHost();
+    this.#mCreatedElementForPreviousFocusedElement?.remove();
+    if (this.#mTest.isFocusable) {
+      return this.#mElementToSetFocus == currentFocusedElement;
+    }
+    return previousFocusedElement == currentFocusedElement;
+  }
+
+  check(aExpectedData) {
+    this.#mTIPWrapper.onIMEFocusBlur = null;
+
+    if (aExpectedData.isFocusable) {
+      if (aExpectedData.focusEventFired) {
+        if (
+          aExpectedData.enabledValue ==
+            SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED ||
+          aExpectedData.enabledValue ==
+            SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_PASSWORD
+        ) {
+          ok(
+            this.#mTIPWrapper.numberOfFocusNotifications > 0,
+            `${this.#mDescription}, IME should receive a focus notification`
+          );
+          if (
+            aExpectedData.designModeValue == "on" &&
+            !aExpectedData.testedSubDocumentInDesignMode
+          ) {
+            is(
+              this.#mTIPWrapper.numberOfBlurNotifications,
+              0,
+              `${
+                this.#mDescription
+              }, IME shouldn't receive a blur notification in designMode since focus isn't moved from another editor`
+            );
+          } else {
+            ok(
+              this.#mTIPWrapper.numberOfBlurNotifications > 0,
+              `${
+                this.#mDescription
+              }, IME should receive a blur notification for the previous focused editor`
+            );
+          }
+          ok(
+            this.#mTIPWrapper.IMEHasFocus,
+            `${this.#mDescription}, IME should have focus right now`
+          );
+        } else {
+          is(
+            this.#mTIPWrapper.numberOfFocusNotifications,
+            0,
+            `${this.#mDescription}, IME shouldn't receive a focus notification`
+          );
+          ok(
+            this.#mTIPWrapper.numberOfBlurNotifications > 0,
+            `${this.#mDescription}, IME should receive a blur notification`
+          );
+          ok(
+            !this.#mTIPWrapper.IMEHasFocus,
+            `${this.#mDescription}, IME shouldn't have focus right now`
+          );
+        }
+      } else {
+        ok(true, `${this.#mDescription}, focus event should be fired`);
+      }
+    } else {
+      is(
+        this.#mTIPWrapper.numberOfFocusNotifications,
+        0,
+        `${
+          this.#mDescription
+        }, IME shouldn't receive a focus notification at testing non-focusable element`
+      );
+      is(
+        this.#mTIPWrapper.numberOfBlurNotifications,
+        0,
+        `${
+          this.#mDescription
+        }, IME shouldn't receive a blur notification at testing non-focusable element`
+      );
+    }
+
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedData.enabledValue,
+      `${this.#mDescription}, wrong enabled state`
+    );
+    if (
+      this.#mTest.expectedInputElementType &&
+      aExpectedData.designModeValue != "on"
+    ) {
+      is(
+        this.#mWindowUtils.focusedInputType,
+        this.#mTest.expectedInputElementType,
+        `${this.#mDescription}, wrong input type`
+      );
+    } else if (aExpectedData.designModeValue == "on") {
+      is(
+        this.#mWindowUtils.focusedInputType,
+        "",
+        `${this.#mDescription}, wrong input type`
+      );
+    }
+  }
+
+  destroy() {
+    this.#mCreatedElement?.remove();
+    this.#mCreatedElementForPreviousFocusedElement?.remove();
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  /**
+   * Open/Close state test check
+   * Note that these tests are not run now.
+   * If these tests should run between `run` and `cleanUp` call of the above
+   * tests.
+   */
+  canTestOpenCloseState(aExpectedData) {
+    return (
+      IsIMEOpenStateSupported() &&
+      this.#mWindowUtils.IMEStatus ==
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED &&
+      aExpectedData.enabledValue ==
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED
+    );
+  }
+  async prepareToRunOpenCloseTest(aContainer) {
+    const doc = aContainer.ownerDocument;
+    this.#mCreatedElementForPreviousFocusedElement?.remove();
+    this.#mCreatedElementForPreviousFocusedElement = doc.createElement("input");
+    this.#mCreatedElementForPreviousFocusedElement.setAttribute("type", "text");
+    aContainer.appendChild(this.#mCreatedElementForPreviousFocusedElement);
+
+    this.#mContainerIsEditable = nodeIsEditable(aContainer);
+    this.#mCreatedElement = this.#mTest.createElement(doc);
+    const waitForLoadIfIFrame = new Promise(resolve => {
+      if (this.#mCreatedElement.tagName == "IFRAME") {
+        this.#mCreatedElement.addEventListener("load", resolve, {
+          capture: true,
+          once: true,
+        });
+      } else {
+        resolve();
+      }
+    });
+    aContainer.appendChild(this.#mCreatedElement);
+    await waitForLoadIfIFrame;
+    this.#mElementToSetFocus = this.#mCreatedElement.contentDocument
+      ? this.#mCreatedElement.contentDocument.documentElement
+      : this.#mCreatedElement;
+
+    this.#mCreatedElementForPreviousFocusedElement.focus();
+
+    return {};
+  }
+  prepareToCheckOpenCloseTest(aPreviousOpenState, aExpectedData) {
+    info(`Starting ${this.#mDescription} (open/close state check)...`);
+    this.#mWindowUtils.IMEIsOpen = aPreviousOpenState;
+    aExpectedData.defaultOpenState = this.#mWindowUtils.IMEIsOpen;
+  }
+  async runOpenCloseTest() {
+    return this.run();
+  }
+  checkOpenCloseTest(aExpectedData) {
+    const expectedOpenState =
+      this.#mTest.expectedOpenState != undefined
+        ? this.#mTest.expectedOpenState
+        : aExpectedData.defaultOpenState;
+    is(
+      this.#mWindowUtils.IMEIsOpen,
+      expectedOpenState,
+      `${this.#mDescription}, IME should ${
+        expectedOpenState != aExpectedData.defaultOpenState ? "become" : "keep"
+      } ${expectedOpenState ? "open" : "closed"}`
+    );
+  }
+
+  /**
+   * Utility methods for defining kIMEStateTestList.
+   */
+
+  /**
+   * @param {Element} aElement
+   */
+  static #elementIsConnectedAndNotInDesignMode(aElement) {
+    return aElement.isConnected && !nodeIsInDesignMode(aElement);
+  }
+
+  /**
+   * @param {Element} aElementContainer
+   * @param {bool} aElementIsEditingHost
+   */
+  static #elementIsFocusableIfEditingHost(
+    aElementContainer,
+    aElementIsEditingHost
+  ) {
+    return !nodeIsEditable(aElementContainer) && aElementIsEditingHost;
+  }
+
+  static #IMEStateEnabledAlways() {
+    return SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  /**
+   * @param {Element} aElement
+   * @param {bool} aElementIsEditingHost
+   */
+  static #IMEStateEnabledIfEditable(aElement, aElementIsEditingHost) {
+    return nodeIsEditable(aElement) || aElementIsEditingHost
+      ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED
+      : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED;
+  }
+
+  /**
+   * @param {Element} aElement
+   */
+  static #IMEStateEnabledIfInDesignMode(aElement) {
+    return IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode(
+      aElement
+    )
+      ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED
+      : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  /**
+   * @param {Element} aElement
+   */
+  static #IMEStatePasswordIfNotInDesignMode(aElement) {
+    return IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode(
+      aElement
+    )
+      ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_PASSWORD
+      : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+  }
+
+  /**
+   * @param {Element} aElement
+   */
+  static #elementIsConnectedAndNotEditable(aElement) {
+    return aElement.isConnected && !nodeIsEditable(aElement);
+  }
+
+  /**
+   * @param {Element} aElementContainer
+   */
+  static #focusEventIsExpectedUnlessEditableChild(aElementContainer) {
+    return !nodeIsEditable(aElementContainer);
+  }
+
+  // Form controls except text editable elements are "disable" in normal
+  // condition, however, if they are editable, they are "enabled".
+  // XXX Probably there are some bugs: If the form controls editable, they
+  //     shouldn't be focusable.
+  #resolveTest(aTest, aContainer) {
+    const isFocusable = aTest.isFocusable(
+      aContainer,
+      aTest.isNewElementEditingHost
+    );
+    return {
+      // Description of the new element
+      description: aTest.description,
+      // Create element to check IME state
+      createElement: aTest.createElement,
+      // Whether the new element is an editing host if container is not editable
+      isNewElementEditingHost: aTest.isNewElementEditingHost,
+      // If the test wants to move focus into an element in UA widget, define
+      // this and set focus in it.
+      setFocusIntoUAWidget: aTest.setFocusIntoUAWidget,
+      // Whether the element is focusable or not
+      isFocusable,
+      // Whether focus events are fired on the element if it's focusable
+      focusEventIsExpected:
+        isFocusable &&
+        aTest.focusEventIsExpected(aContainer, aTest.isNewElementEditingHost),
+      // Expected IME enabled state when the element has focus
+      expectedEnabledValue: aTest.expectedEnabledValue(
+        aContainer,
+        aTest.isNewElementEditingHost
+      ),
+      // Expected IME open state when the element gets focus
+      // "undefined" means that IME open state should not be changed
+      expectedOpenState: aTest.expectedOpenState,
+      // Expected type of input element if it's an <input>
+      expectedInputElementType: aTest.expectedInputElementType,
+    };
+  }
+  static #sTestList = [
+    {
+      description: "input[type=text]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedInputElementType: "text",
+    },
+    {
+      description: "input[type=text][readonly]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        element.setAttribute("readonly", "");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "input[type=password]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+      expectedInputElementType: "password",
+    },
+    {
+      description: "input[type=password][readonly]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        element.setAttribute("readonly", "");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "input[type=checkbox]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "checkbox");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected:
+        IMEStateOnFocusMoveTester.#focusEventIsExpectedUnlessEditableChild,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=radio]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "radio");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected:
+        IMEStateOnFocusMoveTester.#focusEventIsExpectedUnlessEditableChild,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=submit]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "submit");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=reset]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "reset");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=file]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "file");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected:
+        IMEStateOnFocusMoveTester.#focusEventIsExpectedUnlessEditableChild,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=button]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "button");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=image]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "image");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "input[type=url]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "url");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedInputElementType: "url",
+    },
+    {
+      description: "input[type=email]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "email");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedInputElementType: "email",
+    },
+    {
+      description: "input[type=search]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "search");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedInputElementType: "search",
+    },
+    {
+      description: "input[type=tel]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "tel");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedInputElementType: "tel",
+    },
+    {
+      description: "input[type=number]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "number");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedInputElementType: "number",
+    },
+    {
+      description: "input[type=date]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "date");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+      expectedInputElementType: "date",
+    },
+    {
+      description: "input[type=datetime-local]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "datetime-local");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+      expectedInputElementType: "datetime-local",
+    },
+    {
+      description: "input[type=time]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "time");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+      expectedInputElementType: "time",
+    },
+    // TODO(bug 1283382, bug 1283382): month and week
+
+    // form controls
+    {
+      description: "button",
+      createElement: aDocument => aDocument.createElement("button"),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "textarea",
+      createElement: aDocument => aDocument.createElement("textarea"),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: "textarea[readonly]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("textarea");
+        element.setAttribute("readonly", "");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "select (dropdown list)",
+      createElement: aDocument => {
+        const select = aDocument.createElement("select");
+        const option1 = aDocument.createElement("option");
+        option1.textContent = "abc";
+        const option2 = aDocument.createElement("option");
+        option2.textContent = "def";
+        const option3 = aDocument.createElement("option");
+        option3.textContent = "ghi";
+        select.appendChild(option1);
+        select.appendChild(option2);
+        select.appendChild(option3);
+        return select;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected:
+        IMEStateOnFocusMoveTester.#focusEventIsExpectedUnlessEditableChild,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "select (list box)",
+      createElement: aDocument => {
+        const select = aDocument.createElement("select");
+        select.setAttribute("multiple", "multiple");
+        const option1 = aDocument.createElement("option");
+        option1.textContent = "abc";
+        const option2 = aDocument.createElement("option");
+        option2.textContent = "def";
+        const option3 = aDocument.createElement("option");
+        option3.textContent = "ghi";
+        select.appendChild(option1);
+        select.appendChild(option2);
+        select.appendChild(option3);
+        return select;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected:
+        IMEStateOnFocusMoveTester.#focusEventIsExpectedUnlessEditableChild,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+
+    // a element
+    {
+      id: "a_href",
+      description: "a[href]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("a");
+        element.setAttribute("href", "about:blank");
+        return element;
+      },
+      isFocusable: IMEStateOnFocusMoveTester.#elementIsConnectedAndNotEditable,
+      focusEventIsExpected:
+        IMEStateOnFocusMoveTester.#focusEventIsExpectedUnlessEditableChild,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+
+    // audio element
+    {
+      description: "audio[controls]",
+      createElement: aDocument => {
+        const element = aDocument.createElement("audio");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "playButton in audio",
+      createElement: aDocument => {
+        const element = aDocument.createElement("audio");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("playButton")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "scrubber in audio",
+      createElement: aDocument => {
+        const element = aDocument.createElement("audio");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("scrubber")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "muteButton in audio",
+      createElement: aDocument => {
+        const element = aDocument.createElement("audio");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("muteButton")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "volumeControl in audio",
+      createElement: aDocument => {
+        const element = aDocument.createElement("audio");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("volumeControl")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+
+    // video element
+    {
+      description: "video",
+      createElement: aDocument => {
+        const element = aDocument.createElement("video");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfEditable,
+    },
+    {
+      description: "playButton in video",
+      createElement: aDocument => {
+        const element = aDocument.createElement("video");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("playButton")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "scrubber in video",
+      createElement: aDocument => {
+        const element = aDocument.createElement("video");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("scrubber")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "muteButton in video",
+      createElement: aDocument => {
+        const element = aDocument.createElement("video");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("muteButton")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+    {
+      description: "volumeControl in video",
+      createElement: aDocument => {
+        const element = aDocument.createElement("video");
+        element.setAttribute("controls", "");
+        return element;
+      },
+      setFocusIntoUAWidget: aElement =>
+        SpecialPowers.wrap(aElement)
+          .openOrClosedShadowRoot.getElementById("volumeControl")
+          .focus(),
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStateEnabledIfInDesignMode,
+    },
+
+    // ime-mode
+    {
+      description: 'input[type=text][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=text][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=text][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=text][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=text][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "text");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    {
+      description: 'input[type=url][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "url");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=url][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "url");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=url][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "url");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=url][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "url");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=url][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "url");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    {
+      description: 'input[type=email][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "email");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=email][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "email");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=email][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "email");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=email][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "email");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=email][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "email");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    {
+      description: 'input[type=search][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "search");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=search][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "search");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=search][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "search");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=search][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "search");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=search][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "search");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    {
+      description: 'input[type=tel][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "tel");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=tel][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "tel");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=tel][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "tel");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=tel][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "tel");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=tel][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "tel");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    {
+      description: 'input[type=number][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "number");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=number][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "number");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=number][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "number");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=number][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "number");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=number][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "number");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    {
+      description: 'input[type=password][style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+    {
+      description: 'input[type=password][style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'input[type=password][style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: true,
+    },
+    {
+      description: 'input[type=password][style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: false,
+    },
+    {
+      description: 'input[type=password][style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("input");
+        element.setAttribute("type", "password");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+    {
+      description: 'textarea[style="ime-mode: auto;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("textarea");
+        element.setAttribute("style", "ime-mode: auto;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'textarea[style="ime-mode: normal;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("textarea");
+        element.setAttribute("style", "ime-mode: normal;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: 'textarea[style="ime-mode: active;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("textarea");
+        element.setAttribute("style", "ime-mode: active;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: true,
+    },
+    {
+      description: 'textarea[style="ime-mode: inactive;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("textarea");
+        element.setAttribute("style", "ime-mode: inactive;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+      expectedOpenState: false,
+    },
+    {
+      description: 'textarea[style="ime-mode: disabled;"]',
+      createElement: aDocument => {
+        const element = aDocument.createElement("textarea");
+        element.setAttribute("style", "ime-mode: disabled;");
+        return element;
+      },
+      isFocusable:
+        IMEStateOnFocusMoveTester.#elementIsConnectedAndNotInDesignMode,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue:
+        IMEStateOnFocusMoveTester.#IMEStatePasswordIfNotInDesignMode,
+    },
+
+    // HTML editors
+    {
+      description: 'div[contenteditable="true"]',
+      createElement: aDocument => {
+        const div = aDocument.createElement("div");
+        div.setAttribute("contenteditable", "");
+        return div;
+      },
+      isNewElementEditingHost: true,
+      isFocusable: IMEStateOnFocusMoveTester.#elementIsFocusableIfEditingHost,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+    {
+      description: "designMode editor",
+      createElement: aDocument => {
+        const iframe = aDocument.createElement("iframe");
+        iframe.srcdoc = "<!doctype html><html><body></body></html>";
+        iframe.addEventListener(
+          "load",
+          () => (iframe.contentDocument.designMode = "on"),
+          { capture: true, once: true }
+        );
+        return iframe;
+      },
+      isFocusable: () => true,
+      focusEventIsExpected: () => true,
+      expectedEnabledValue: IMEStateOnFocusMoveTester.#IMEStateEnabledAlways,
+    },
+  ];
+
+  static get numberOfTests() {
+    return IMEStateOnFocusMoveTester.#sTestList.length;
+  }
+}
diff --git a/widget/tests/file_test_ime_state_on_input_type_change.js b/widget/tests/file_test_ime_state_on_input_type_change.js
new file mode 100644
index 0000000000..38c139d6a2
--- /dev/null
+++ b/widget/tests/file_test_ime_state_on_input_type_change.js
@@ -0,0 +1,315 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+
+class IMEStateOnInputTypeChangeTester {
+  static #sInputElementList = [
+    {
+      type: "",
+      textControl: true,
+    },
+    {
+      type: "text",
+      textControl: true,
+    },
+    {
+      type: "text",
+      readonly: true,
+      textControl: true,
+    },
+    {
+      type: "password",
+      textControl: true,
+    },
+    {
+      type: "password",
+      readonly: true,
+      textControl: true,
+    },
+    {
+      type: "checkbox",
+      buttonControl: true,
+    },
+    {
+      type: "radio",
+      buttonControl: true,
+    },
+    {
+      type: "submit",
+      buttonControl: true,
+    },
+    {
+      type: "reset",
+      buttonControl: true,
+    },
+    {
+      type: "file",
+      buttonControl: true,
+    },
+    {
+      type: "button",
+      buttonControl: true,
+    },
+    {
+      type: "image",
+      alt: "image",
+      buttonControl: true,
+    },
+    {
+      type: "url",
+      textControl: true,
+    },
+    {
+      type: "email",
+      textControl: true,
+    },
+    {
+      type: "search",
+      textControl: true,
+    },
+    {
+      type: "tel",
+      textControl: true,
+    },
+    {
+      type: "number",
+      textControl: true,
+    },
+    {
+      type: "date",
+      dateTimeControl: true,
+    },
+    {
+      type: "datetime-local",
+      dateTimeControl: true,
+    },
+    {
+      type: "time",
+      dateTimeControl: true,
+    },
+    {
+      type: "range",
+      buttonControl: true,
+    },
+    {
+      type: "color",
+      buttonControl: true,
+    },
+    // TODO(bug 1283382, bug 1283382): month and week
+  ];
+
+  static get numberOfTests() {
+    return IMEStateOnInputTypeChangeTester.#sInputElementList.length;
+  }
+
+  /**
+   * @param {HTMLInputElement} aInputElement The input element.
+   * @returns {number} Expected IME state when aInputElement has focus.
+   */
+  static #getExpectedIMEEnabledState(aInputElement) {
+    if (aInputElement.readonly) {
+      return SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED;
+    }
+    switch (aInputElement.type) {
+      case "text":
+      case "url":
+      case "email":
+      case "search":
+      case "tel":
+      case "number":
+        return aInputElement.style.imeMode == "disabled"
+          ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_PASSWORD
+          : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+
+      case "password":
+        return aInputElement.style.imeMode == "" ||
+          aInputElement.style.imeMode == "auto" ||
+          aInputElement.style.imeMode == "disabled"
+          ? SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_PASSWORD
+          : SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED;
+
+      default:
+        return SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED;
+    }
+  }
+
+  static #getDescription(aInputElement) {
+    let desc = "<input";
+    if (aInputElement.getAttribute("type")) {
+      desc += ` type="${aInputElement.getAttribute("type")}"`;
+    }
+    if (aInputElement.readonly) {
+      desc += " readonly";
+    }
+    if (aInputElement.getAttribute("style")) {
+      desc += ` style="ime-mode: ${aInputElement.style.imeMode}"`;
+    }
+    return desc + ">";
+  }
+
+  // Only runner fields
+  #mSrcTypeIndex;
+  #mType;
+  #mInputElement;
+  #mNewType;
+  #mWindow;
+
+  // Only checker fields
+  #mWindowUtils;
+  #mTIPWrapper;
+
+  /**
+   * @param {number} aSrcTypeIndex `type` attribute value index in #sInputElementList
+   */
+  constructor(aSrcTypeIndex) {
+    this.#mSrcTypeIndex = aSrcTypeIndex;
+    this.#mType =
+      IMEStateOnInputTypeChangeTester.#sInputElementList[this.#mSrcTypeIndex];
+  }
+
+  clear() {
+    this.#mInputElement?.remove();
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  #flushPendingIMENotifications() {
+    return new Promise(resolve =>
+      this.#mWindow.requestAnimationFrame(() =>
+        this.#mWindow.requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  /**
+   * @param {number} aDestTypeIndex New type index.
+   * @param {Window} aWindow The window running tests.
+   * @param {Element} aContainer The element which should have new <input>.
+   * @param {undefined|string} aIMEModeValue [optional] ime-mode value if you want to specify.
+   * @returns {object|bool} Expected data before running tests.  If the test should not run, returns false.
+   */
+  async prepareToRun(aDestTypeIndex, aWindow, aContainer, aIMEModeValue) {
+    this.#mWindow = aWindow;
+
+    if (aContainer.ownerDocument.activeElement) {
+      aContainer.ownerDocument.activeElement.blur();
+      await this.#flushPendingIMENotifications();
+    }
+    if (this.#mInputElement?.isConnected) {
+      this.#mInputElement.remove();
+    }
+    this.#mInputElement = null;
+
+    this.#mNewType =
+      IMEStateOnInputTypeChangeTester.#sInputElementList[aDestTypeIndex];
+    if (
+      aDestTypeIndex == this.#mSrcTypeIndex ||
+      this.#mNewType.readonly ||
+      (!this.#mType.textControl && !this.#mNewType.textControl)
+    ) {
+      return false;
+    }
+    this.#mInputElement = aContainer.ownerDocument.createElement("input");
+    if (this.#mType.type != "") {
+      this.#mInputElement.setAttribute("type", this.#mType.type);
+    }
+    if (this.#mType.readonly) {
+      this.#mInputElement.setAttribute("readonly", "");
+    }
+    if (aIMEModeValue && aIMEModeValue !== "") {
+      this.#mInputElement.setAttribute("style", `ime-mode: ${aIMEModeValue}`);
+    }
+    if (this.#mType.alt) {
+      this.#mInputElement.setAttribute("alt", this.#mType.alt);
+    }
+    const waitForFocus = new Promise(resolve =>
+      this.#mInputElement.addEventListener("focus", resolve, { once: true })
+    );
+    aContainer.appendChild(this.#mInputElement);
+    this.#mInputElement.focus();
+    await waitForFocus;
+
+    await this.#flushPendingIMENotifications();
+
+    const expectedIMEState =
+      IMEStateOnInputTypeChangeTester.#getExpectedIMEEnabledState(
+        this.#mInputElement
+      );
+    return {
+      description: IMEStateOnInputTypeChangeTester.#getDescription(
+        this.#mInputElement
+      ),
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedData The expected data which was returned by prepareToRun().
+   * @param {TIPWrapper} aTIPWrapper TIP wrapper in aWindow.
+   * @param {Window} aWindow [optional] The window object of which you want to check IME state.
+   */
+  checkBeforeRun(aExpectedData, aTIPWrapper, aWindow = window) {
+    this.#mWindowUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    this.#mTIPWrapper = aTIPWrapper;
+    const description = `IMEStateOnInputTypeChangeTester(${aExpectedData.description})`;
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedData.expectedIMEState,
+      `${description}: IME state should be set to expected value before running test`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedData.expectedIMEFocus,
+      `${description}: IME state should ${
+        aExpectedData.expectedIMEFocus ? "" : "not"
+      }have focus before running test`
+    );
+  }
+
+  /**
+   * @returns {object} The expected results.
+   */
+  async run() {
+    if (this.#mNewType.type == "") {
+      this.#mInputElement.removeAttribute("type");
+    } else {
+      this.#mInputElement.setAttribute("type", this.#mNewType.type);
+    }
+
+    await this.#flushPendingIMENotifications();
+
+    const expectedIMEState =
+      IMEStateOnInputTypeChangeTester.#getExpectedIMEEnabledState(
+        this.#mInputElement
+      );
+    return {
+      newType: this.#mNewType.type,
+      expectedIMEState,
+      expectedIMEFocus:
+        expectedIMEState !=
+        SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    };
+  }
+
+  checkResult(aExpectedDataBeforeRun, aExpectedData) {
+    const description = `IMEStateOnInputTypeChangeTester(${
+      aExpectedDataBeforeRun.description
+    } -> type="${aExpectedData.newType || ""}")`;
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedData.expectedIMEState,
+      `${description}: IME state should be set to expected value`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedData.expectedIMEFocus,
+      `${description}: IME state should have focus`
+    );
+  }
+}
diff --git a/widget/tests/file_test_ime_state_on_readonly_change.js b/widget/tests/file_test_ime_state_on_readonly_change.js
new file mode 100644
index 0000000000..af21f538ba
--- /dev/null
+++ b/widget/tests/file_test_ime_state_on_readonly_change.js
@@ -0,0 +1,242 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+
+class IMEStateOnReadonlyChangeTester {
+  static #sTextControlTypes = [
+    {
+      description: "<input>",
+      createElement: aDoc => aDoc.createElement("input"),
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<input type="text">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "text");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<input type="password">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "password");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_PASSWORD,
+    },
+    {
+      description: `<input type="url">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "url");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<input type="email">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "email");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<input type="search">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "search");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<input type="tel">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "tel");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<input type="number">`,
+      createElement: aDoc => {
+        const input = aDoc.createElement("input");
+        input.setAttribute("type", "number");
+        return input;
+      },
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+    {
+      description: `<textarea></textarea>`,
+      createElement: aDoc => aDoc.createElement("textarea"),
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    },
+  ];
+
+  static get numberOfTextControlTypes() {
+    return IMEStateOnReadonlyChangeTester.#sTextControlTypes.length;
+  }
+
+  // Only runner fields
+  #mTextControl;
+  #mTextControlElement;
+  #mWindow;
+
+  // Only checker fields
+  #mWindowUtils;
+  #mTIPWrapper;
+
+  clear() {
+    this.#mTextControlElement?.remove();
+    this.#mTIPWrapper?.clearFocusBlurNotifications();
+    this.#mTIPWrapper = null;
+  }
+
+  #flushPendingIMENotifications() {
+    return new Promise(resolve =>
+      this.#mWindow.requestAnimationFrame(() =>
+        this.#mWindow.requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  /**
+   * @param {number} aIndex The index of text control types.
+   * @param {Window} aWindow The window running tests.
+   * @param {Element} aContainer The element which should have new <input> or <textarea>.
+   * @returns {object} Expected data before running tests.
+   */
+  async prepareToRun(aIndex, aWindow, aContainer) {
+    this.#mWindow = aWindow;
+    this.#mTextControl =
+      IMEStateOnReadonlyChangeTester.#sTextControlTypes[aIndex];
+
+    if (aContainer.ownerDocument.activeElement) {
+      aContainer.ownerDocument.activeElement.blur();
+      await this.#flushPendingIMENotifications();
+    }
+    if (this.#mTextControlElement?.isConnected) {
+      this.#mTextControlElement.remove();
+    }
+    this.#mTextControlElement = this.#mTextControl.createElement(
+      aContainer.ownerDocument
+    );
+
+    const waitForFocus = new Promise(resolve =>
+      this.#mTextControlElement.addEventListener("focus", resolve, {
+        once: true,
+      })
+    );
+    aContainer.appendChild(this.#mTextControlElement);
+    this.#mTextControlElement.focus();
+    await waitForFocus;
+
+    await this.#flushPendingIMENotifications();
+
+    return {
+      description: this.#mTextControl.description,
+      expectedIMEState: this.#mTextControl.expectedIMEState,
+      expectedIMEFocus: true,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedData The expected data which was returned by prepareToRun().
+   * @param {TIPWrapper} aTIPWrapper TIP wrapper in aWindow.
+   * @param {Window} aWindow [optional] The window object of which you want to check IME state.
+   */
+  checkBeforeRun(aExpectedData, aTIPWrapper, aWindow = window) {
+    this.#mWindowUtils = SpecialPowers.wrap(aWindow).windowUtils;
+    this.#mTIPWrapper = aTIPWrapper;
+    const description = `IMEStateOnReadonlyChangeTester(${aExpectedData.description})`;
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedData.expectedIMEState,
+      `${description}: IME state should be set to expected value before setting readonly attribute`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedData.expectedIMEFocus,
+      `${description}: IME state should ${
+        aExpectedData.expectedIMEFocus ? "" : "not"
+      } have focus before setting readonly attribute`
+    );
+  }
+
+  /**
+   * @returns {object} Expected result.
+   */
+  async runToMakeTextControlReadonly() {
+    this.#mTextControlElement.setAttribute("readonly", "");
+
+    await this.#flushPendingIMENotifications();
+
+    return {
+      description: this.#mTextControl.description,
+      expectedIMEState: SpecialPowers.Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      expectedIMEFocus: false,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedData Expected result which is returned by runToMakeTextControlReadonly().
+   */
+  checkResultOfMakingTextControlReadonly(aExpectedData) {
+    const description = `IMEStateOnReadonlyChangeTester(${aExpectedData.description})`;
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedData.expectedIMEState,
+      `${description}: IME state should be set to expected value after setting readonly attribute`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedData.expectedIMEFocus,
+      `${description}: IME state should ${
+        aExpectedData.expectedIMEFocus ? "" : "not"
+      } have focus after setting readonly attribute`
+    );
+  }
+
+  /**
+   * @returns {object} Expected result.
+   */
+  async runToMakeTextControlEditable() {
+    this.#mTextControlElement.removeAttribute("readonly");
+
+    await this.#flushPendingIMENotifications();
+
+    return {
+      description: this.#mTextControl.description,
+      expectedIMEState: this.#mTextControl.expectedIMEState,
+      expectedIMEFocus: true,
+    };
+  }
+
+  /**
+   * @param {object} aExpectedData Expected result which is returned by runToMakeTextControlEditable().
+   */
+  checkResultOfMakingTextControlEditable(aExpectedData) {
+    const description = `IMEStateOnReadonlyChangeTester(${aExpectedData.description})`;
+    is(
+      this.#mWindowUtils.IMEStatus,
+      aExpectedData.expectedIMEState,
+      `${description}: IME state should be set to expected value after removing readonly attribute`
+    );
+    is(
+      this.#mTIPWrapper.IMEHasFocus,
+      aExpectedData.expectedIMEFocus,
+      `${description}: IME state should ${
+        aExpectedData.expectedIMEFocus ? "" : "not"
+      } have focus after removing readonly attribute`
+    );
+  }
+}
diff --git a/widget/tests/gtest/MockWinWidget.cpp b/widget/tests/gtest/MockWinWidget.cpp
new file mode 100644
index 0000000000..ed7850076f
--- /dev/null
+++ b/widget/tests/gtest/MockWinWidget.cpp
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "MockWinWidget.h"
+
+#include "mozilla/gfx/Logging.h"
+
+NS_IMPL_ISUPPORTS_INHERITED0(MockWinWidget, nsBaseWidget)
+
+// static
+RefPtr<MockWinWidget> MockWinWidget::Create(DWORD aStyle, DWORD aExStyle,
+                                            const LayoutDeviceIntRect& aRect) {
+  RefPtr<MockWinWidget> window = new MockWinWidget;
+  if (!window->Initialize(aStyle, aExStyle, aRect)) {
+    return nullptr;
+  }
+
+  return window;
+}
+
+MockWinWidget::MockWinWidget() {}
+
+MockWinWidget::~MockWinWidget() {
+  if (mWnd) {
+    ::DestroyWindow(mWnd);
+    mWnd = 0;
+  }
+}
+
+bool MockWinWidget::Initialize(DWORD aStyle, DWORD aExStyle,
+                               const LayoutDeviceIntRect& aRect) {
+  WNDCLASSW wc;
+  const wchar_t className[] = L"MozillaMockWinWidget";
+  HMODULE hSelf = ::GetModuleHandle(nullptr);
+
+  if (!GetClassInfoW(hSelf, className, &wc)) {
+    ZeroMemory(&wc, sizeof(WNDCLASSW));
+    wc.hInstance = hSelf;
+    wc.lpfnWndProc = ::DefWindowProc;
+    wc.lpszClassName = className;
+    RegisterClassW(&wc);
+  }
+
+  mWnd = ::CreateWindowExW(aExStyle, className, className, aStyle, aRect.X(),
+                           aRect.Y(), aRect.Width(), aRect.Height(), nullptr,
+                           nullptr, hSelf, nullptr);
+  if (!mWnd) {
+    gfxCriticalNoteOnce << "GetClientRect failed " << ::GetLastError();
+    return false;
+  }
+
+  // First nccalcszie (during CreateWindow) for captioned windows is
+  // deliberately ignored so force a second one here to get the right
+  // non-client set up.
+  if (mWnd && (aStyle & WS_CAPTION)) {
+    ::SetWindowPos(mWnd, NULL, 0, 0, 0, 0,
+                   SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
+                       SWP_NOACTIVATE | SWP_NOREDRAW);
+  }
+
+  mBounds = aRect;
+  return true;
+}
+
+void MockWinWidget::NotifyOcclusionState(
+    mozilla::widget::OcclusionState aState) {
+  mCurrentState = aState;
+}
+
+nsSizeMode MockWinWidget::SizeMode() {
+  if (::IsIconic(mWnd)) {
+    return nsSizeMode_Minimized;
+  }
+  return nsSizeMode_Normal;
+}
diff --git a/widget/tests/gtest/MockWinWidget.h b/widget/tests/gtest/MockWinWidget.h
new file mode 100644
index 0000000000..891e1c942d
--- /dev/null
+++ b/widget/tests/gtest/MockWinWidget.h
@@ -0,0 +1,85 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GTEST_MockWinWidget_H
+#define GTEST_MockWinWidget_H
+
+#include <windows.h>
+
+#include "nsBaseWidget.h"
+#include "Units.h"
+
+class MockWinWidget : public nsBaseWidget {
+ public:
+  static RefPtr<MockWinWidget> Create(DWORD aStyle, DWORD aExStyle,
+                                      const LayoutDeviceIntRect& aRect);
+
+  NS_DECL_ISUPPORTS_INHERITED
+
+  void NotifyOcclusionState(mozilla::widget::OcclusionState aState) override;
+
+  void SetExpectation(mozilla::widget::OcclusionState aExpectation) {
+    mExpectation = aExpectation;
+  }
+
+  bool IsExpectingCall() const { return mExpectation != mCurrentState; }
+
+  HWND GetWnd() { return mWnd; }
+
+  nsSizeMode SizeMode() override;
+  void SetSizeMode(nsSizeMode aMode) override {}
+
+  void* GetNativeData(uint32_t aDataType) override { return nullptr; }
+
+  virtual nsresult Create(nsIWidget* aParent, nsNativeWidget aNativeParent,
+                          const LayoutDeviceIntRect& aRect,
+                          InitData* aInitData = nullptr) override {
+    return NS_OK;
+  }
+  virtual nsresult Create(nsIWidget* aParent, nsNativeWidget aNativeParent,
+                          const DesktopIntRect& aRect,
+                          InitData* aInitData = nullptr) override {
+    return NS_OK;
+  }
+  virtual void Show(bool aState) override {}
+  virtual bool IsVisible() const override { return true; }
+  virtual void Move(double aX, double aY) override {}
+  virtual void Resize(double aWidth, double aHeight, bool aRepaint) override {}
+  virtual void Resize(double aX, double aY, double aWidth, double aHeight,
+                      bool aRepaint) override {}
+
+  virtual void Enable(bool aState) override {}
+  virtual bool IsEnabled() const override { return true; }
+  virtual void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override {}
+  virtual void Invalidate(const LayoutDeviceIntRect& aRect) override {}
+  virtual nsresult SetTitle(const nsAString& title) override { return NS_OK; }
+  virtual LayoutDeviceIntPoint WidgetToScreenOffset() override {
+    return LayoutDeviceIntPoint(0, 0);
+  }
+  virtual nsresult DispatchEvent(mozilla::WidgetGUIEvent* aEvent,
+                                 nsEventStatus& aStatus) override {
+    return NS_OK;
+  }
+  virtual void SetInputContext(const InputContext& aContext,
+                               const InputContextAction& aAction) override {}
+  virtual InputContext GetInputContext() override { abort(); }
+
+ private:
+  MockWinWidget();
+  ~MockWinWidget();
+
+  bool Initialize(DWORD aStyle, DWORD aExStyle,
+                  const LayoutDeviceIntRect& aRect);
+
+  HWND mWnd = 0;
+
+  mozilla::widget::OcclusionState mExpectation =
+      mozilla::widget::OcclusionState::UNKNOWN;
+  mozilla::widget::OcclusionState mCurrentState =
+      mozilla::widget::OcclusionState::UNKNOWN;
+};
+
+#endif
diff --git a/widget/tests/gtest/TestTimeConverter.cpp b/widget/tests/gtest/TestTimeConverter.cpp
new file mode 100644
index 0000000000..22cbc3f9e6
--- /dev/null
+++ b/widget/tests/gtest/TestTimeConverter.cpp
@@ -0,0 +1,265 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "mozilla/TimeStamp.h"
+#include "SystemTimeConverter.h"
+
+using mozilla::SystemTimeConverter;
+using mozilla::TimeDuration;
+using mozilla::TimeStamp;
+
+namespace {
+
+// This class provides a mock implementation of the CurrentTimeGetter template
+// type used in SystemTimeConverter. It can be constructed with a particular
+// Time and always returns that Time.
+template <typename Time>
+class MockCurrentTimeGetter {
+ public:
+  MockCurrentTimeGetter() : mTime(0) {}
+  explicit MockCurrentTimeGetter(Time aTime) : mTime(aTime) {}
+
+  // Methods needed for CurrentTimeGetter compatibility
+  Time GetCurrentTime() const { return mTime; }
+  void GetTimeAsyncForPossibleBackwardsSkew(const TimeStamp& aNow) {}
+
+ private:
+  Time mTime;
+};
+
+// This is another mock implementation of the CurrentTimeGetter template
+// type used in SystemTimeConverter, except this asserts that it will not be
+// used. i.e. it should only be used in calls to SystemTimeConverter that we
+// know will not invoke it.
+template <typename Time>
+class UnusedCurrentTimeGetter {
+ public:
+  Time GetCurrentTime() const {
+    EXPECT_TRUE(false);
+    return 0;
+  }
+
+  void GetTimeAsyncForPossibleBackwardsSkew(const TimeStamp& aNow) {
+    EXPECT_TRUE(false);
+  }
+};
+
+// This class provides a mock implementation of the TimeStampNowProvider
+// template type used in SystemTimeConverter. It also has other things in it
+// that allow the test to better control time for testing purposes.
+class MockTimeStamp {
+ public:
+  // This should generally be called at the start of every test function, as
+  // it will initialize this class's static fields to sane values. In particular
+  // it will initialize the baseline TimeStamp against which all other
+  // TimeStamps are compared.
+  static void Init() {
+    sBaseline = TimeStamp::Now();
+    sTimeStamp = sBaseline;
+  }
+
+  // Advance the timestamp returned by `MockTimeStamp::Now()`
+  static void Advance(double ms) {
+    sTimeStamp += TimeDuration::FromMilliseconds(ms);
+  }
+
+  // Returns the baseline TimeStamp, that is used as a fixed reference point
+  // in time against which other TimeStamps can be compared. This is needed
+  // because mozilla::TimeStamp itself doesn't provide any conversion to
+  // human-readable strings, and we need to convert it to a TimeDuration in
+  // order to get that. This baseline TimeStamp can be used to turn an
+  // arbitrary TimeStamp into a TimeDuration.
+  static TimeStamp Baseline() { return sBaseline; }
+
+  // This is the method needed for TimeStampNowProvider compatibility, and
+  // simulates `TimeStamp::Now()`
+  static TimeStamp Now() { return sTimeStamp; }
+
+ private:
+  static TimeStamp sTimeStamp;
+  static TimeStamp sBaseline;
+};
+
+TimeStamp MockTimeStamp::sTimeStamp;
+TimeStamp MockTimeStamp::sBaseline;
+
+// Could have platform-specific implementations of this using DWORD, guint32,
+// etc behind ifdefs. But this is sufficient for now.
+using GTestTime = uint32_t;
+using TimeConverter = SystemTimeConverter<GTestTime, MockTimeStamp>;
+
+}  // namespace
+
+// Checks the expectation that the TimeStamp `ts` is exactly `ms` milliseconds
+// after the baseline timestamp. This is a macro so gtest still gives us useful
+// line numbers for failures.
+#define EXPECT_TS(ts, ms) \
+  EXPECT_EQ((ts)-MockTimeStamp::Baseline(), TimeDuration::FromMilliseconds(ms))
+
+#define EXPECT_TS_FUZZY(ts, ms) \
+  EXPECT_DOUBLE_EQ(((ts)-MockTimeStamp::Baseline()).ToMilliseconds(), ms)
+
+TEST(TimeConverter, SanityCheck)
+{
+  MockTimeStamp::Init();
+
+  MockCurrentTimeGetter timeGetter(10);
+  UnusedCurrentTimeGetter<GTestTime> unused;
+  TimeConverter converter;
+
+  // This call sets the reference time and timestamp
+  TimeStamp ts = converter.GetTimeStampFromSystemTime(10, timeGetter);
+  EXPECT_TS(ts, 0);
+
+  // Advance "TimeStamp::Now" by 10ms, use the same event time and OS time.
+  // Since the event time is the same as before, we expect to get back the
+  // same TimeStamp as before too, despite Now() changing.
+  MockTimeStamp::Advance(10);
+  ts = converter.GetTimeStampFromSystemTime(10, unused);
+  EXPECT_TS(ts, 0);
+
+  // Now let's use an event time 20ms after the old event. This will trigger
+  // forward skew detection and resync the TimeStamp for the new event to Now().
+  ts = converter.GetTimeStampFromSystemTime(30, unused);
+  EXPECT_TS(ts, 10);
+}
+
+TEST(TimeConverter, Overflow)
+{
+  // This tests wrapping time around the max value supported in the GTestTime
+  // type and ensuring it is handled properly.
+
+  MockTimeStamp::Init();
+
+  const GTestTime max = std::numeric_limits<GTestTime>::max();
+  const GTestTime min = std::numeric_limits<GTestTime>::min();
+  double fullRange = (double)max - (double)min;
+  double wrapPeriod = fullRange + 1.0;
+
+  GTestTime almostOverflowed = max - 100;
+  GTestTime overflowed = max + 100;
+  MockCurrentTimeGetter timeGetter(almostOverflowed);
+  UnusedCurrentTimeGetter<GTestTime> unused;
+  TimeConverter converter;
+
+  // Set reference time to 100ms before the overflow point
+  TimeStamp ts =
+      converter.GetTimeStampFromSystemTime(almostOverflowed, timeGetter);
+  EXPECT_TS(ts, 0);
+
+  // Advance everything by 200ms and verify we get back a TimeStamp 200ms from
+  // the baseline despite wrapping an overflow.
+  MockTimeStamp::Advance(200);
+  ts = converter.GetTimeStampFromSystemTime(overflowed, unused);
+  EXPECT_TS(ts, 200);
+
+  // Advance by another full wraparound of the time. This loses some precision
+  // so we have to do the FUZZY match
+  MockTimeStamp::Advance(wrapPeriod);
+  ts = converter.GetTimeStampFromSystemTime(overflowed, unused);
+  EXPECT_TS_FUZZY(ts, 200.0 + wrapPeriod);
+}
+
+TEST(TimeConverter, InvertedOverflow)
+{
+  // This tests time going from near the min value of GTestTime to the max
+  // value of GTestTime
+
+  MockTimeStamp::Init();
+
+  const GTestTime max = std::numeric_limits<GTestTime>::max();
+  const GTestTime min = std::numeric_limits<GTestTime>::min();
+  double fullRange = (double)max - (double)min;
+  double wrapPeriod = fullRange + 1.0;
+
+  GTestTime nearRangeMin = min + 100;
+  GTestTime nearRangeMax = max - 100;
+  double gap = (double)nearRangeMax - (double)nearRangeMin;
+
+  MockCurrentTimeGetter timeGetter(nearRangeMin);
+  UnusedCurrentTimeGetter<GTestTime> unused;
+  TimeConverter converter;
+
+  // Set reference time to value near min numeric limit
+  TimeStamp ts = converter.GetTimeStampFromSystemTime(nearRangeMin, timeGetter);
+  EXPECT_TS(ts, 0);
+
+  // Advance to value near max numeric limit
+  MockTimeStamp::Advance(gap);
+  ts = converter.GetTimeStampFromSystemTime(nearRangeMax, unused);
+  EXPECT_TS(ts, gap);
+
+  // Advance by another full wraparound of the time. This loses some precision
+  // so we have to do the FUZZY match
+  MockTimeStamp::Advance(wrapPeriod);
+  ts = converter.GetTimeStampFromSystemTime(nearRangeMax, unused);
+  EXPECT_TS_FUZZY(ts, gap + wrapPeriod);
+}
+
+TEST(TimeConverter, HalfRangeBoundary)
+{
+  MockTimeStamp::Init();
+
+  GTestTime max = std::numeric_limits<GTestTime>::max();
+  GTestTime min = std::numeric_limits<GTestTime>::min();
+  double fullRange = (double)max - (double)min;
+  double wrapPeriod = fullRange + 1.0;
+  GTestTime halfRange = (GTestTime)(fullRange / 2.0);
+  GTestTime halfWrapPeriod = (GTestTime)(wrapPeriod / 2.0);
+
+  TimeConverter converter;
+
+  GTestTime firstEvent = 10;
+  MockCurrentTimeGetter timeGetter(firstEvent);
+  UnusedCurrentTimeGetter<GTestTime> unused;
+
+  // Set reference time
+  TimeStamp ts = converter.GetTimeStampFromSystemTime(firstEvent, timeGetter);
+  EXPECT_TS(ts, 0);
+
+  // Advance event time by just under the half-period, to trigger about as big
+  // a forwards skew as we possibly can.
+  GTestTime secondEvent = firstEvent + (halfWrapPeriod - 1);
+  ts = converter.GetTimeStampFromSystemTime(secondEvent, unused);
+  EXPECT_TS(ts, 0);
+
+  // The above forwards skew will have reset the reference timestamp. Now
+  // advance Now time by just under the half-range, to trigger about as big
+  // a backwards skew as we possibly can.
+  MockTimeStamp::Advance(halfRange - 1);
+  ts = converter.GetTimeStampFromSystemTime(secondEvent, unused);
+  EXPECT_TS(ts, 0);
+}
+
+TEST(TimeConverter, FractionalMillisBug1626734)
+{
+  MockTimeStamp::Init();
+
+  TimeConverter converter;
+
+  GTestTime eventTime = 10;
+  MockCurrentTimeGetter timeGetter(eventTime);
+  UnusedCurrentTimeGetter<GTestTime> unused;
+
+  TimeStamp ts = converter.GetTimeStampFromSystemTime(eventTime, timeGetter);
+  EXPECT_TS(ts, 0);
+
+  MockTimeStamp::Advance(0.2);
+  ts = converter.GetTimeStampFromSystemTime(eventTime, unused);
+  EXPECT_TS(ts, 0);
+
+  MockTimeStamp::Advance(0.9);
+  TimeStamp ts2 = converter.GetTimeStampFromSystemTime(eventTime, unused);
+  EXPECT_TS(ts2, 0);
+
+  // Since ts2 came from a "future" call relative to ts, we expect ts2 to not
+  // be "before" ts. (i.e. time shouldn't go backwards, even by fractional
+  // milliseconds). This assertion is technically already implied by the
+  // EXPECT_TS checks above, but fixing this assertion is the end result that
+  // we wanted in bug 1626734 so it feels appropriate to recheck it explicitly.
+  EXPECT_TRUE(ts <= ts2);
+}
diff --git a/widget/tests/gtest/TestTouchResampler.cpp b/widget/tests/gtest/TestTouchResampler.cpp
new file mode 100644
index 0000000000..1a5b8e2430
--- /dev/null
+++ b/widget/tests/gtest/TestTouchResampler.cpp
@@ -0,0 +1,941 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <initializer_list>
+#include "InputData.h"
+#include "Units.h"
+#include "gtest/gtest.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/TimeStamp.h"
+#include "TouchResampler.h"
+
+using namespace mozilla;
+using widget::TouchResampler;
+
+class TouchResamplerTest : public ::testing::Test {
+ protected:
+  virtual void SetUp() { baseTimeStamp = TimeStamp::Now(); }
+
+  TimeStamp Time(double aMilliseconds) {
+    return baseTimeStamp + TimeDuration::FromMilliseconds(aMilliseconds);
+  }
+
+  uint64_t ProcessEvent(
+      MultiTouchInput::MultiTouchType aType,
+      std::initializer_list<std::pair<TimeStamp, ScreenIntPoint>>
+          aHistoricalData,
+      const TimeStamp& aTimeStamp, const ScreenIntPoint& aPosition) {
+    MultiTouchInput input(aType, 0, aTimeStamp, 0);
+    input.mTouches.AppendElement(SingleTouchData(1, aPosition, {}, 0.0f, 0.0f));
+    for (const auto& histData : aHistoricalData) {
+      input.mTouches[0].mHistoricalData.AppendElement(
+          SingleTouchData::HistoricalTouchData{
+              histData.first, histData.second, {}, {}, 0.0f, 0.0f});
+    }
+    return resampler.ProcessEvent(std::move(input));
+  }
+
+  void CheckTime(const TimeStamp& aTimeStamp,
+                 const TimeStamp& aExpectedTimeStamp) {
+    EXPECT_EQ((aTimeStamp - baseTimeStamp).ToMilliseconds(),
+              (aExpectedTimeStamp - baseTimeStamp).ToMilliseconds());
+  }
+
+  void CheckEvent(const MultiTouchInput& aEvent,
+                  MultiTouchInput::MultiTouchType aExpectedType,
+                  std::initializer_list<std::pair<TimeStamp, ScreenIntPoint>>
+                      aExpectedHistoricalData,
+                  const TimeStamp& aExpectedTimeStamp,
+                  const ScreenIntPoint& aExpectedPosition) {
+    EXPECT_EQ(aEvent.mType, aExpectedType);
+    EXPECT_EQ(aEvent.mTouches.Length(), size_t(1));
+    EXPECT_EQ(aEvent.mTouches[0].mHistoricalData.Length(),
+              aExpectedHistoricalData.size());
+    for (size_t i = 0; i < aExpectedHistoricalData.size(); i++) {
+      CheckTime(aEvent.mTouches[0].mHistoricalData[i].mTimeStamp,
+                aExpectedHistoricalData.begin()[i].first);
+      EXPECT_EQ(aEvent.mTouches[0].mHistoricalData[i].mScreenPoint,
+                aExpectedHistoricalData.begin()[i].second);
+    }
+    CheckTime(aEvent.mTimeStamp, aExpectedTimeStamp);
+    EXPECT_EQ(aEvent.mTouches[0].mScreenPoint, aExpectedPosition);
+  }
+
+  struct ExpectedOutgoingEvent {
+    Maybe<uint64_t> mEventId;
+    MultiTouchInput::MultiTouchType mType = MultiTouchInput::MULTITOUCH_START;
+    std::initializer_list<std::pair<TimeStamp, ScreenIntPoint>> mHistoricalData;
+    TimeStamp mTimeStamp;
+    ScreenIntPoint mPosition;
+  };
+
+  void CheckOutgoingEvents(
+      std::initializer_list<ExpectedOutgoingEvent> aExpectedEvents) {
+    auto outgoing = resampler.ConsumeOutgoingEvents();
+    EXPECT_EQ(outgoing.size(), aExpectedEvents.size());
+    for (const auto& expectedEvent : aExpectedEvents) {
+      auto outgoingEvent = std::move(outgoing.front());
+      outgoing.pop();
+
+      EXPECT_EQ(outgoingEvent.mEventId, expectedEvent.mEventId);
+      CheckEvent(outgoingEvent.mEvent, expectedEvent.mType,
+                 expectedEvent.mHistoricalData, expectedEvent.mTimeStamp,
+                 expectedEvent.mPosition);
+    }
+  }
+
+  TimeStamp baseTimeStamp;
+  TouchResampler resampler;
+};
+
+TEST_F(TouchResamplerTest, BasicExtrapolation) {
+  // Execute the following sequence:
+  //
+  // 0----------10-------16-----20---------------32------------
+  // * touchstart at (10, 10)
+  //             * touchmove at (20, 20)
+  //                      * frame
+  //                             * touchend at (20, 20)
+  //                                              * frame
+  //
+  // And expect the following output:
+  //
+  // 0----------10-------16-----20---------------32------------
+  // * touchstart at (10, 10)
+  //                      * touchmove at (26, 26)
+  //                      * touchmove at (20, 20)
+  //                             * touchend at (20, 20)
+  //
+  // The first frame should emit an extrapolated touchmove from the position
+  // data in the touchstart and touchmove events.
+  // The touchend should force a synthesized touchmove that returns back to a
+  // non-resampled position.
+
+  EXPECT_FALSE(resampler.InTouchingState());
+
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(10, 10));
+  EXPECT_TRUE(resampler.InTouchingState());
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(10.0),
+                              ScreenIntPoint(20, 20));
+
+  resampler.NotifyFrame(Time(16.0));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(10, 10)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(20, 20)}},
+       Time(16.0),
+       ScreenIntPoint(26, 26)},
+  });
+
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(20.0),
+                             ScreenIntPoint(20, 20));
+
+  EXPECT_FALSE(resampler.InTouchingState());
+
+  CheckOutgoingEvents({
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(16.0),
+       ScreenIntPoint(20, 20)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(20.0),
+       ScreenIntPoint(20, 20)},
+  });
+
+  // No more events should be produced from here on out.
+  resampler.NotifyFrame(Time(32.0));
+  auto outgoing = resampler.ConsumeOutgoingEvents();
+  EXPECT_TRUE(outgoing.empty());
+}
+
+TEST_F(TouchResamplerTest, BasicInterpolation) {
+  // Same test as BasicExtrapolation, but with a frame time that's 10ms earlier.
+  //
+  // Execute the following sequence:
+  //
+  // 0------6---10-----------20--22------------30-------------
+  // * touchstart at (10, 10)
+  //             * touchmove at (20, 20)
+  //        * frame
+  //                          * touchend at (20, 20)
+  //                              * frame
+  //
+  // And expect the following output:
+  //
+  // 0------6---10-----------20--22------------30-------------
+  // * touchstart at (10, 10)
+  //        * touchmove (16, 16)
+  //             * touchmove (20, 20)
+  //                          * touchend at (20, 20)
+  //
+  // The first frame should emit an interpolated touchmove from the position
+  // data in the touchstart and touchmove events.
+  // The touchend should create a touchmove that returns back to a non-resampled
+  // position.
+
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(10, 10));
+  EXPECT_TRUE(resampler.InTouchingState());
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(10.0),
+                              ScreenIntPoint(20, 20));
+
+  resampler.NotifyFrame(Time(6.0));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(10, 10)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(6.0),
+       ScreenIntPoint(16, 16)},
+  });
+
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(20.0),
+                             ScreenIntPoint(20, 20));
+  EXPECT_FALSE(resampler.InTouchingState());
+
+  CheckOutgoingEvents({
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(10.0),
+       ScreenIntPoint(20, 20)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(20.0),
+       ScreenIntPoint(20, 20)},
+  });
+
+  // No more events should be produced from here on out.
+  resampler.NotifyFrame(Time(22.0));
+  auto outgoing = resampler.ConsumeOutgoingEvents();
+  EXPECT_TRUE(outgoing.empty());
+}
+
+TEST_F(TouchResamplerTest, InterpolationFromHistoricalData) {
+  // Interpolate from the historical data in a touch move event.
+  //
+  // Execute the following sequence:
+  //
+  // 0----------10-------16-----20-----------30--32------------
+  // * touchstart at (10, 10)
+  //             * [hist] at (20, 25) for
+  //             `---------------* touchmove at (30, 30)
+  //                      * frame
+  //                                          * touchend at (30, 30)
+  //                                              * frame
+  //
+  // And expect the following output:
+  //
+  // 0----------10-------16-----20-----------30--32------------
+  // * touchstart at (10, 10)
+  //             * [hist] at (20, 25) for
+  //             `--------* touchmove at (26, 28)
+  //                             * touchmove at (30, 30)
+  //                                          * touchend at (30, 30)
+  //
+  // The first frame should emit an interpolated touchmove from the position
+  // data in the touchmove event, and integrate the historical data point into
+  // the resampled event.
+  // The touchend should force a synthesized touchmove that returns back to a
+  // non-resampled position.
+
+  // This also tests that interpolation works for both x and y, by giving the
+  // historical datapoint different values for x and y.
+  // (26, 28) is 60% of the way from (20, 25) to (30, 30).
+
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(10, 10));
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(10.0), ScreenIntPoint(20, 25)}},
+                              Time(20.0), ScreenIntPoint(30, 30));
+  resampler.NotifyFrame(Time(16.0));
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(30.0),
+                             ScreenIntPoint(30, 30));
+  resampler.NotifyFrame(Time(32.0));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(10, 10)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(20, 25)}},
+       Time(16.0),
+       ScreenIntPoint(26, 28)},
+
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(20.0),
+       ScreenIntPoint(30, 30)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(30.0),
+       ScreenIntPoint(30, 30)},
+  });
+}
+
+TEST_F(TouchResamplerTest, MultipleTouches) {
+  EXPECT_FALSE(resampler.InTouchingState());
+
+  // Touch start
+  MultiTouchInput inputStart0(MultiTouchInput::MULTITOUCH_START, 0, Time(0.0),
+                              0);
+  inputStart0.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(10, 10), {}, 0.0f, 0.0f));
+  auto idStart0 = resampler.ProcessEvent(std::move(inputStart0));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Touch move
+  MultiTouchInput inputMove1(MultiTouchInput::MULTITOUCH_MOVE, 0, Time(20.0),
+                             0);
+  inputMove1.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(30, 30), {}, 0.0f, 0.0f));
+  inputMove1.mTouches[0].mHistoricalData.AppendElement(
+      SingleTouchData::HistoricalTouchData{
+          Time(10.0), ScreenIntPoint(20, 25), {}, {}, 0.0f, 0.0f});
+  auto idMove1 = resampler.ProcessEvent(std::move(inputMove1));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Frame
+  resampler.NotifyFrame(Time(16.0));
+
+  // Touch move
+  MultiTouchInput inputMove2(MultiTouchInput::MULTITOUCH_MOVE, 0, Time(30.0),
+                             0);
+  inputMove2.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(30, 40), {}, 0.0f, 0.0f));
+  auto idMove2 = resampler.ProcessEvent(std::move(inputMove2));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Touch start
+  MultiTouchInput inputStart3(MultiTouchInput::MULTITOUCH_START, 0, Time(30.0),
+                              0);
+  inputStart3.mTouches.AppendElement(
+      SingleTouchData(2, ScreenIntPoint(100, 10), {}, 0.0f, 0.0f));
+  inputStart3.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(30, 40), {}, 0.0f, 0.0f));
+  auto idStart3 = resampler.ProcessEvent(std::move(inputStart3));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Touch move
+  MultiTouchInput inputMove4(MultiTouchInput::MULTITOUCH_MOVE, 0, Time(40.0),
+                             0);
+  inputMove4.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(30, 50), {}, 0.0f, 0.0f));
+  inputMove4.mTouches.AppendElement(
+      SingleTouchData(2, ScreenIntPoint(100, 30), {}, 0.0f, 0.0f));
+  auto idMove4 = resampler.ProcessEvent(std::move(inputMove4));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Frame
+  resampler.NotifyFrame(Time(32.0));
+
+  // Touch move
+  MultiTouchInput inputMove5(MultiTouchInput::MULTITOUCH_MOVE, 0, Time(50.0),
+                             0);
+  inputMove5.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(30, 60), {}, 0.0f, 0.0f));
+  inputMove5.mTouches.AppendElement(
+      SingleTouchData(2, ScreenIntPoint(100, 40), {}, 0.0f, 0.0f));
+  auto idMove5 = resampler.ProcessEvent(std::move(inputMove5));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Touch end
+  MultiTouchInput inputEnd6(MultiTouchInput::MULTITOUCH_END, 0, Time(50.0), 0);
+  // Touch point with identifier 1 is lifted
+  inputEnd6.mTouches.AppendElement(
+      SingleTouchData(1, ScreenIntPoint(30, 60), {}, 0.0f, 0.0f));
+  auto idEnd6 = resampler.ProcessEvent(std::move(inputEnd6));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Frame
+  resampler.NotifyFrame(Time(48.0));
+
+  // Touch move
+  MultiTouchInput inputMove7(MultiTouchInput::MULTITOUCH_MOVE, 0, Time(60.0),
+                             0);
+  inputMove7.mTouches.AppendElement(
+      SingleTouchData(2, ScreenIntPoint(100, 60), {}, 0.0f, 0.0f));
+  auto idMove7 = resampler.ProcessEvent(std::move(inputMove7));
+  EXPECT_TRUE(resampler.InTouchingState());
+
+  // Frame
+  resampler.NotifyFrame(Time(64.0));
+
+  // Touch end
+  MultiTouchInput inputEnd8(MultiTouchInput::MULTITOUCH_END, 0, Time(70.0), 0);
+  // Touch point with identifier 2 is lifted
+  inputEnd8.mTouches.AppendElement(
+      SingleTouchData(2, ScreenIntPoint(100, 60), {}, 0.0f, 0.0f));
+  auto idEnd8 = resampler.ProcessEvent(std::move(inputEnd8));
+  EXPECT_FALSE(resampler.InTouchingState());
+
+  // Check outgoing events
+  auto outgoing = resampler.ConsumeOutgoingEvents();
+  EXPECT_EQ(outgoing.size(), size_t(9));
+
+  auto outgoingStart0 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingStart0.mEventId, Some(idStart0));
+  CheckEvent(outgoingStart0.mEvent, MultiTouchInput::MULTITOUCH_START, {},
+             Time(0.0), ScreenIntPoint(10, 10));
+
+  auto outgoingMove1 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingMove1.mEventId, Some(idMove1));
+  // (26, 28) is 60% of the way from (20, 25) to (30, 30).
+  CheckEvent(outgoingMove1.mEvent, MultiTouchInput::MULTITOUCH_MOVE,
+             {{Time(10.0), ScreenIntPoint(20, 25)}}, Time(16.0),
+             ScreenIntPoint(26, 28));
+
+  auto outgoingMove2 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingMove2.mEventId, Some(idMove2));
+  CheckEvent(outgoingMove2.mEvent, MultiTouchInput::MULTITOUCH_MOVE,
+             {{Time(20.0), ScreenIntPoint(30, 30)}}, Time(30.0),
+             ScreenIntPoint(30, 40));
+
+  auto outgoingStart3 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingStart3.mEventId, Some(idStart3));
+  EXPECT_EQ(outgoingStart3.mEvent.mType, MultiTouchInput::MULTITOUCH_START);
+  CheckTime(outgoingStart3.mEvent.mTimeStamp, Time(30.0));
+  EXPECT_EQ(outgoingStart3.mEvent.mTouches.Length(), size_t(2));
+  // touch order should be taken from the original touch start event
+  EXPECT_EQ(outgoingStart3.mEvent.mTouches[0].mIdentifier, 2);
+  EXPECT_EQ(outgoingStart3.mEvent.mTouches[0].mScreenPoint,
+            ScreenIntPoint(100, 10));
+  EXPECT_EQ(outgoingStart3.mEvent.mTouches[1].mIdentifier, 1);
+  EXPECT_EQ(outgoingStart3.mEvent.mTouches[1].mScreenPoint,
+            ScreenIntPoint(30, 40));
+
+  auto outgoingMove4 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingMove4.mEventId, Some(idMove4));
+  EXPECT_EQ(outgoingMove4.mEvent.mType, MultiTouchInput::MULTITOUCH_MOVE);
+  CheckTime(outgoingMove4.mEvent.mTimeStamp, Time(32.0));
+  EXPECT_EQ(outgoingMove4.mEvent.mTouches.Length(), size_t(2));
+  // Touch order should be taken from the original touch move event.
+  // Both touches should be resampled.
+  EXPECT_EQ(outgoingMove4.mEvent.mTouches[0].mIdentifier, 1);
+  EXPECT_EQ(outgoingMove4.mEvent.mTouches[0].mScreenPoint,
+            ScreenIntPoint(30, 42));
+  EXPECT_EQ(outgoingMove4.mEvent.mTouches[1].mIdentifier, 2);
+  EXPECT_EQ(outgoingMove4.mEvent.mTouches[1].mScreenPoint,
+            ScreenIntPoint(100, 14));
+
+  auto outgoingMove5 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingMove5.mEventId, Some(idMove5));
+  EXPECT_EQ(outgoingMove5.mEvent.mType, MultiTouchInput::MULTITOUCH_MOVE);
+  CheckTime(outgoingMove5.mEvent.mTimeStamp, Time(50.0));
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches.Length(), size_t(2));
+  // touch order should be taken from the original touch move event
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[0].mIdentifier, 1);
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[0].mScreenPoint,
+            ScreenIntPoint(30, 60));
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[0].mHistoricalData.Length(),
+            size_t(1));
+  CheckTime(outgoingMove5.mEvent.mTouches[0].mHistoricalData[0].mTimeStamp,
+            Time(40.0));
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[0].mHistoricalData[0].mScreenPoint,
+            ScreenIntPoint(30, 50));
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[1].mIdentifier, 2);
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[1].mScreenPoint,
+            ScreenIntPoint(100, 40));
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[1].mHistoricalData.Length(),
+            size_t(1));
+  CheckTime(outgoingMove5.mEvent.mTouches[1].mHistoricalData[0].mTimeStamp,
+            Time(40.0));
+  EXPECT_EQ(outgoingMove5.mEvent.mTouches[1].mHistoricalData[0].mScreenPoint,
+            ScreenIntPoint(100, 30));
+
+  auto outgoingEnd6 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingEnd6.mEventId, Some(idEnd6));
+  CheckEvent(outgoingEnd6.mEvent, MultiTouchInput::MULTITOUCH_END, {},
+             Time(50.0), ScreenIntPoint(30, 60));
+
+  auto outgoingMove7 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingMove7.mEventId, Some(idMove7));
+  // No extrapolation because the frame at 64.0 cleared the data points because
+  // there was no pending touch move event at that point
+  CheckEvent(outgoingMove7.mEvent, MultiTouchInput::MULTITOUCH_MOVE, {},
+             Time(60.0), ScreenIntPoint(100, 60));
+  EXPECT_EQ(outgoingMove7.mEvent.mTouches[0].mIdentifier, 2);
+
+  auto outgoingEnd8 = std::move(outgoing.front());
+  outgoing.pop();
+  EXPECT_EQ(outgoingEnd8.mEventId, Some(idEnd8));
+  CheckEvent(outgoingEnd8.mEvent, MultiTouchInput::MULTITOUCH_END, {},
+             Time(70.0), ScreenIntPoint(100, 60));
+}
+
+TEST_F(TouchResamplerTest, MovingPauses) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(10, 10));
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(10.0),
+                              ScreenIntPoint(20, 20));
+  resampler.NotifyFrame(Time(16.0));
+  auto idMove2 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(30.0),
+                              ScreenIntPoint(40, 40));
+  resampler.NotifyFrame(Time(32.0));
+  auto idMove3 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(40.0),
+                              ScreenIntPoint(50, 40));
+  resampler.NotifyFrame(Time(48.0));
+  resampler.NotifyFrame(Time(64.0));
+  auto idEnd4 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(50, 40));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(10, 10)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(20, 20)}},
+       Time(16.0),
+       ScreenIntPoint(26, 26)},
+
+      {Some(idMove2),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(30.0), ScreenIntPoint(40, 40)}},
+       Time(32.0),
+       ScreenIntPoint(42, 42)},
+
+      {Some(idMove3),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(40.0), ScreenIntPoint(50, 40)}},
+       Time(48.0),
+       ScreenIntPoint(58, 40)},
+
+      // There was no event between two frames here, so we expect a reset event,
+      // so that we pause at a non-resampled position.
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(48.0),
+       ScreenIntPoint(50, 40)},
+
+      {Some(idEnd4),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(50, 40)},
+  });
+}
+
+TEST_F(TouchResamplerTest, MixedInterAndExtrapolation) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(10.0),
+                              ScreenIntPoint(0, 10));
+  resampler.NotifyFrame(Time(11.0));  // 16 - 5
+  auto idMove2 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(20.0), ScreenIntPoint(0, 20)}}, Time(30.0),
+                              ScreenIntPoint(0, 30));
+  resampler.NotifyFrame(Time(27.0));  // 32 - 5
+  auto idMove3 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(40.0),
+                              ScreenIntPoint(0, 40));
+  resampler.NotifyFrame(Time(43.0));  // 48 - 5
+  auto idMove4 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(50.0), ScreenIntPoint(0, 50)}}, Time(60.0),
+                              ScreenIntPoint(0, 60));
+  resampler.NotifyFrame(Time(59.0));  // 64 - 5
+  auto idEnd5 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 60));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(0, 10)}},
+       Time(11.0),
+       ScreenIntPoint(0, 11)},
+
+      {Some(idMove2),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(20.0), ScreenIntPoint(0, 20)}},
+       Time(27.0),
+       ScreenIntPoint(0, 27)},
+
+      {Some(idMove3),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(30.0), ScreenIntPoint(0, 30)},
+        {Time(40.0), ScreenIntPoint(0, 40)}},
+       Time(43.0),
+       ScreenIntPoint(0, 43)},
+
+      {Some(idMove4),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(50.0), ScreenIntPoint(0, 50)}},
+       Time(59.0),
+       ScreenIntPoint(0, 59)},
+
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(60.0),
+       ScreenIntPoint(0, 60)},
+
+      {Some(idEnd5),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 60)},
+  });
+}
+
+TEST_F(TouchResamplerTest, MultipleMoveEvents) {
+  // Test what happens if multiple touch move events appear between two frames.
+  // This scenario shouldn't occur on Android but we should be able to deal with
+  // it anyway. Check that we don't discard any event IDs.
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(10.0),
+                              ScreenIntPoint(0, 10));
+  resampler.NotifyFrame(Time(11.0));  // 16 - 5
+  auto idMove2 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(20.0), ScreenIntPoint(0, 20)}}, Time(30.0),
+                              ScreenIntPoint(0, 30));
+  auto idMove3 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(40.0),
+                              ScreenIntPoint(0, 40));
+  auto idMove4 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(45.0), ScreenIntPoint(0, 45)}}, Time(50.0),
+                              ScreenIntPoint(0, 50));
+  auto idMove5 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE, {}, Time(55.0),
+                              ScreenIntPoint(0, 55));
+  resampler.NotifyFrame(Time(43.0));  // 48 - 5
+  resampler.NotifyFrame(Time(59.0));  // 64 - 5
+  auto idEnd5 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 60));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(0, 10)}},
+       Time(11.0),
+       ScreenIntPoint(0, 11)},
+
+      {Some(idMove2),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(20.0), ScreenIntPoint(0, 20)}},
+       Time(30.0),
+       ScreenIntPoint(0, 30)},
+
+      {Some(idMove3),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(40.0),
+       ScreenIntPoint(0, 40)},
+
+      {Some(idMove4),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(43.0),
+       ScreenIntPoint(0, 43)},
+
+      {Some(idMove5),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(45.0), ScreenIntPoint(0, 45)},
+        {Time(50.0), ScreenIntPoint(0, 50)},
+        {Time(55.0), ScreenIntPoint(0, 55)}},
+       Time(59.0),
+       ScreenIntPoint(0, 59)},
+
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(59.0),
+       ScreenIntPoint(0, 55)},
+
+      {Some(idEnd5),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 60)},
+  });
+}
+
+TEST_F(TouchResamplerTest, LimitFuturePrediction) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  // Fingers move until time 44, then pause. UI thread is occupied until 64.
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(20.0), ScreenIntPoint(0, 20)},
+                               {Time(32.0), ScreenIntPoint(0, 32)}},
+                              Time(44.0), ScreenIntPoint(0, 44));
+  resampler.NotifyFrame(Time(59.0));  // 64 - 5
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 44));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      // kTouchResampleMaxPredictMs == 8
+      // Refuse to predict more than 8ms into the future, the fingers might have
+      // paused. Make an event for time 52 (= 44 + 8) instead of 59.
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(20.0), ScreenIntPoint(0, 20)},
+        {Time(32.0), ScreenIntPoint(0, 32)},
+        {Time(44.0), ScreenIntPoint(0, 44)}},
+       Time(52.0),
+       ScreenIntPoint(0, 52)},
+
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(52.0),
+       ScreenIntPoint(0, 44)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 44)},
+  });
+}
+
+TEST_F(TouchResamplerTest, LimitBacksampling) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  // Fingers move until time 44, then pause. UI thread is occupied until 64.
+  // Then we get a frame callback with a very outdated frametime.
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(20.0), ScreenIntPoint(0, 20)},
+                               {Time(32.0), ScreenIntPoint(0, 32)}},
+                              Time(44.0), ScreenIntPoint(0, 44));
+  resampler.NotifyFrame(Time(11.0));  // 16 - 5
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 44));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      // kTouchResampleMaxBacksampleMs == 20
+      // Refuse to sample further back than 20ms before the last data point.
+      // Make an event for time 24 (= 44 - 20) instead of time 11.
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(20.0), ScreenIntPoint(0, 20)}},
+       Time(24.0),
+       ScreenIntPoint(0, 24)},
+
+      {Nothing(),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(32.0), ScreenIntPoint(0, 32)}},
+       Time(44.0),
+       ScreenIntPoint(0, 44)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 44)},
+  });
+}
+
+TEST_F(TouchResamplerTest, DontExtrapolateFromOldTouch) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  // Fingers move until time 40, then pause. UI thread is occupied until 64.
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(20.0), ScreenIntPoint(0, 20)},
+                               {Time(30.0), ScreenIntPoint(0, 30)}},
+                              Time(40.0), ScreenIntPoint(0, 40));
+  resampler.NotifyFrame(Time(59.0));  // 64 - 5
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 44));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      // kTouchResampleOldTouchThresholdMs == 17
+      // Refuse to extrapolate from a data point that's more than 17ms older
+      // than the frame time.
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(20.0), ScreenIntPoint(0, 20)},
+        {Time(30.0), ScreenIntPoint(0, 30)}},
+       Time(40.0),
+       ScreenIntPoint(0, 40)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 44)},
+  });
+}
+
+TEST_F(TouchResamplerTest, DontExtrapolateIfTooOld) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  // Fingers move until time 10, pause, and move again at 55.
+  // UI thread is occupied until 64.
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(10.0), ScreenIntPoint(0, 10)}}, Time(55.0),
+                              ScreenIntPoint(0, 55));
+  resampler.NotifyFrame(Time(59.0));  // 64 - 5
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 60));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      // kTouchResampleWindowSize == 40
+      // Refuse to resample between two data points that are more than 40ms
+      // apart.
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(0, 10)}},
+       Time(55.0),
+       ScreenIntPoint(0, 55)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 60)},
+  });
+}
+
+TEST_F(TouchResamplerTest, DontInterpolateIfTooOld) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  // Fingers move until time 10, pause, and move again at 60.
+  // UI thread is occupied until 64.
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(10.0), ScreenIntPoint(0, 10)}}, Time(60.0),
+                              ScreenIntPoint(0, 60));
+  resampler.NotifyFrame(Time(59.0));  // 64 - 5
+  auto idEnd2 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(70.0),
+                             ScreenIntPoint(0, 60));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      // kTouchResampleWindowSize == 40
+      // Refuse to resample between two data points that are more than 40ms
+      // apart.
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(0, 10)}},
+       Time(60.0),
+       ScreenIntPoint(0, 60)},
+
+      {Some(idEnd2),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(70.0),
+       ScreenIntPoint(0, 60)},
+  });
+}
+
+TEST_F(TouchResamplerTest, DiscardOutdatedHistoricalData) {
+  auto idStart0 = ProcessEvent(MultiTouchInput::MULTITOUCH_START, {}, Time(0.0),
+                               ScreenIntPoint(0, 0));
+  auto idMove1 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(10.0), ScreenIntPoint(0, 10)}}, Time(16.0),
+                              ScreenIntPoint(0, 16));
+  resampler.NotifyFrame(Time(20.0));
+  auto idMove2 = ProcessEvent(MultiTouchInput::MULTITOUCH_MOVE,
+                              {{Time(18.0), ScreenIntPoint(0, 18)}}, Time(25.0),
+                              ScreenIntPoint(0, 25));
+  auto idEnd3 = ProcessEvent(MultiTouchInput::MULTITOUCH_END, {}, Time(35.0),
+                             ScreenIntPoint(0, 25));
+
+  CheckOutgoingEvents({
+      {Some(idStart0),
+       MultiTouchInput::MULTITOUCH_START,
+       {},
+       Time(0.0),
+       ScreenIntPoint(0, 0)},
+
+      {Some(idMove1),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {{Time(10.0), ScreenIntPoint(0, 10)},
+        {Time(16.0), ScreenIntPoint(0, 16)}},
+       Time(20.0),
+       ScreenIntPoint(0, 20)},
+
+      // Discard the historical data point from time 18, because we've already
+      // sent out an event with time 20 and don't want to go back before that.
+      {Some(idMove2),
+       MultiTouchInput::MULTITOUCH_MOVE,
+       {},
+       Time(25.0),
+       ScreenIntPoint(0, 25)},
+
+      {Some(idEnd3),
+       MultiTouchInput::MULTITOUCH_END,
+       {},
+       Time(35.0),
+       ScreenIntPoint(0, 25)},
+  });
+}
diff --git a/widget/tests/gtest/TestWinHeaderOnlyUtils.cpp b/widget/tests/gtest/TestWinHeaderOnlyUtils.cpp
new file mode 100644
index 0000000000..5ac361fea0
--- /dev/null
+++ b/widget/tests/gtest/TestWinHeaderOnlyUtils.cpp
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include "mozilla/WinHeaderOnlyUtils.h"
+
+#include <shlwapi.h>
+
+TEST(WinHeaderOnlyUtils, MozPathGetDriveNumber)
+{
+  constexpr auto TestPathGetDriveNumber = [](const wchar_t* aPath) {
+    return mozilla::MozPathGetDriveNumber(aPath) ==
+           ::PathGetDriveNumberW(aPath);
+  };
+  EXPECT_TRUE(TestPathGetDriveNumber(nullptr));
+  EXPECT_TRUE(TestPathGetDriveNumber(L""));
+  EXPECT_TRUE(TestPathGetDriveNumber(L" :"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"a:"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"C:\\file"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"x:/file"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"@:\\\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"B"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"abc:\\file"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\:A"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\?"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\?\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\?\\\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\?\\c:\\"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\?\\A"));
+  EXPECT_TRUE(TestPathGetDriveNumber(L"\\\\?\\ \\"));
+}
diff --git a/widget/tests/gtest/TestWinMessageLoggingUtils.cpp b/widget/tests/gtest/TestWinMessageLoggingUtils.cpp
new file mode 100644
index 0000000000..b0ab09f866
--- /dev/null
+++ b/widget/tests/gtest/TestWinMessageLoggingUtils.cpp
@@ -0,0 +1,101 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

+/* vim: set ts=8 sts=2 et sw=2 tw=80: */

+/* This Source Code Form is subject to the terms of the Mozilla Public

+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,

+ * You can obtain one at http://mozilla.org/MPL/2.0/. */

+

+#include "gtest/gtest.h"

+#include "windows/nsWindowDbg.h"

+

+using namespace mozilla;

+using namespace mozilla::widget;

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_CombinationFlagsHandledFirst)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x3, "COMBO"}, {0x1, "ONE"}, {0x2, "TWO"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x3, flags, nullptr));

+  EXPECT_STREQ("COMBO", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_SingleFlag)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x4, flags, nullptr));

+  EXPECT_STREQ("FOUR", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_SingleFlagWithName)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x4, flags, "paramName"));

+  EXPECT_STREQ("paramName=FOUR", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_MultipleFlags)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x5, flags, nullptr));

+  EXPECT_STREQ("ONE|FOUR", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_NoFlags)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x8, flags, nullptr));

+  EXPECT_STREQ("Unknown (0x00000008)", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_OnlySomeFlagsMatch)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x9, flags, nullptr));

+  EXPECT_STREQ("ONE|Unknown (0x00000008)", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_FlagsMatch_NoZeroReturned)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}, {0x0, "ZERO"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x2, flags, nullptr));

+  EXPECT_STREQ("TWO", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_NoFlagsMatch_NoZeroReturned)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}, {0x0, "ZERO"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x8, flags, nullptr));

+  EXPECT_STREQ("Unknown (0x00000008)", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_NameAndNoFlagsMatch_NoZeroReturned)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}, {0x0, "ZERO"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x8, flags, "paramName"));

+  EXPECT_STREQ("paramName=Unknown (0x00000008)", result.get());

+}

+

+TEST(WinMessageLoggingUtils, AppendFlagsInfo_ValueIsZero_ZeroReturned)

+{

+  const nsTArray<EnumValueAndName> flags = {

+      {0x1, "ONE"}, {0x2, "TWO"}, {0x4, "FOUR"}, {0x0, "ZERO"}};

+  nsAutoCString result;

+  EXPECT_EQ(true, AppendFlagsInfo(result, 0x0, flags, nullptr));

+  EXPECT_STREQ("ZERO", result.get());

+}

diff --git a/widget/tests/gtest/TestWinWindowOcclusionTracker.cpp b/widget/tests/gtest/TestWinWindowOcclusionTracker.cpp
new file mode 100644
index 0000000000..5ef7e3f81c
--- /dev/null
+++ b/widget/tests/gtest/TestWinWindowOcclusionTracker.cpp
@@ -0,0 +1,162 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include <dwmapi.h>
+#include <windows.h>
+
+#include "MockWinWidget.h"
+#include "mozilla/widget/WinWindowOcclusionTracker.h"
+
+using namespace mozilla;
+using namespace mozilla::widget;
+
+class WinWindowOcclusionTrackerTest : public ::testing::Test {
+ protected:
+  HWND CreateNativeWindow(DWORD aStyle, DWORD aExStyle) {
+    mMockWinWidget =
+        MockWinWidget::Create(WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | aStyle,
+                              aExStyle, LayoutDeviceIntRect(0, 0, 100, 100));
+    EXPECT_NE(nullptr, mMockWinWidget.get());
+    HWND hwnd = mMockWinWidget->GetWnd();
+    HRGN region = ::CreateRectRgn(0, 0, 0, 0);
+    EXPECT_NE(nullptr, region);
+    if (::GetWindowRgn(hwnd, region) == COMPLEXREGION) {
+      // On Windows 7, the newly created window has a complex region, which
+      // means it will be ignored during the occlusion calculation. So, force
+      // it to have a simple region so that we get test coverage on win 7.
+      RECT boundingRect;
+      EXPECT_TRUE(::GetWindowRect(hwnd, &boundingRect));
+      HRGN rectangularRegion = ::CreateRectRgnIndirect(&boundingRect);
+      EXPECT_NE(nullptr, rectangularRegion);
+      ::SetWindowRgn(hwnd, rectangularRegion, /* bRedraw = */ TRUE);
+      ::DeleteObject(rectangularRegion);
+    }
+    ::DeleteObject(region);
+
+    ::ShowWindow(hwnd, SW_SHOWNORMAL);
+    EXPECT_TRUE(UpdateWindow(hwnd));
+    return hwnd;
+  }
+
+  // Wrapper around IsWindowVisibleAndFullyOpaque so only the test class
+  // needs to be a friend of NativeWindowOcclusionTrackerWin.
+  bool CheckWindowVisibleAndFullyOpaque(HWND aHWnd,
+                                        LayoutDeviceIntRect* aWinRect) {
+    bool ret = WinWindowOcclusionTracker::IsWindowVisibleAndFullyOpaque(
+        aHWnd, aWinRect);
+    // In general, if IsWindowVisibleAndFullyOpaque returns false, the
+    // returned rect should not be altered.
+    if (!ret) {
+      EXPECT_EQ(*aWinRect, LayoutDeviceIntRect(0, 0, 0, 0));
+    }
+    return ret;
+  }
+
+  RefPtr<MockWinWidget> mMockWinWidget;
+};
+
+TEST_F(WinWindowOcclusionTrackerTest, VisibleOpaqueWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, /* aExStyle = */ 0);
+  LayoutDeviceIntRect returnedRect;
+  // Normal windows should be visible.
+  EXPECT_TRUE(CheckWindowVisibleAndFullyOpaque(hwnd, &returnedRect));
+
+  // Check that the returned rect == the actual window rect of the hwnd.
+  RECT winRect;
+  ASSERT_TRUE(::GetWindowRect(hwnd, &winRect));
+  EXPECT_EQ(returnedRect, LayoutDeviceIntRect(winRect.left, winRect.top,
+                                              winRect.right - winRect.left,
+                                              winRect.bottom - winRect.top));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, MinimizedWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, /* aExStyle = */ 0);
+  LayoutDeviceIntRect winRect;
+  ::ShowWindow(hwnd, SW_MINIMIZE);
+  // Minimized windows are not considered visible.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, TransparentWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, WS_EX_TRANSPARENT);
+  LayoutDeviceIntRect winRect;
+  // Transparent windows are not considered visible and opaque.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, ToolWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, WS_EX_TOOLWINDOW);
+  LayoutDeviceIntRect winRect;
+  // Tool windows are not considered visible and opaque.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, LayeredAlphaWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, WS_EX_LAYERED);
+  LayoutDeviceIntRect winRect;
+  BYTE alpha = 1;
+  DWORD flags = LWA_ALPHA;
+  COLORREF colorRef = RGB(1, 1, 1);
+  SetLayeredWindowAttributes(hwnd, colorRef, alpha, flags);
+  // Layered windows with alpha < 255 are not considered visible and opaque.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, UpdatedLayeredAlphaWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, WS_EX_LAYERED);
+  LayoutDeviceIntRect winRect;
+  HDC hdc = ::CreateCompatibleDC(nullptr);
+  EXPECT_NE(nullptr, hdc);
+  BLENDFUNCTION blend = {AC_SRC_OVER, 0x00, 0xFF, AC_SRC_ALPHA};
+
+  ::UpdateLayeredWindow(hwnd, hdc, nullptr, nullptr, nullptr, nullptr,
+                        RGB(0xFF, 0xFF, 0xFF), &blend, ULW_OPAQUE);
+  // Layered windows set up with UpdateLayeredWindow instead of
+  // SetLayeredWindowAttributes should not be considered visible and opaque.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+  ::DeleteDC(hdc);
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, LayeredNonAlphaWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, WS_EX_LAYERED);
+  LayoutDeviceIntRect winRect;
+  BYTE alpha = 1;
+  DWORD flags = 0;
+  COLORREF colorRef = RGB(1, 1, 1);
+  ::SetLayeredWindowAttributes(hwnd, colorRef, alpha, flags);
+  // Layered non alpha windows are considered visible and opaque.
+  EXPECT_TRUE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, ComplexRegionWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, /* aExStyle = */ 0);
+  LayoutDeviceIntRect winRect;
+  // Create a region with rounded corners, which should be a complex region.
+  HRGN region = CreateRoundRectRgn(1, 1, 100, 100, 5, 5);
+  EXPECT_NE(nullptr, region);
+  ::SetWindowRgn(hwnd, region, /* bRedraw = */ TRUE);
+  // Windows with complex regions are not considered visible and fully opaque.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+  DeleteObject(region);
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, PopupWindow) {
+  HWND hwnd = CreateNativeWindow(WS_POPUP, /* aExStyle = */ 0);
+  LayoutDeviceIntRect winRect;
+  // Normal Popup Windows are not considered visible.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
+
+TEST_F(WinWindowOcclusionTrackerTest, CloakedWindow) {
+  HWND hwnd = CreateNativeWindow(/* aStyle = */ 0, /* aExStyle = */ 0);
+  LayoutDeviceIntRect winRect;
+  BOOL cloak = TRUE;
+  ::DwmSetWindowAttribute(hwnd, DWMWA_CLOAK, &cloak, sizeof(cloak));
+  // Cloaked Windows are not considered visible.
+  EXPECT_FALSE(CheckWindowVisibleAndFullyOpaque(hwnd, &winRect));
+}
diff --git a/widget/tests/gtest/TestWinWindowOcclusionTrackerInteractive.cpp b/widget/tests/gtest/TestWinWindowOcclusionTrackerInteractive.cpp
new file mode 100644
index 0000000000..13cd95651c
--- /dev/null
+++ b/widget/tests/gtest/TestWinWindowOcclusionTrackerInteractive.cpp
@@ -0,0 +1,402 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include "MockWinWidget.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/widget/WinEventObserver.h"
+#include "mozilla/widget/WinWindowOcclusionTracker.h"
+#include "nsThreadUtils.h"
+#include "Units.h"
+#include "WinUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::widget;
+
+#define PREF_DISPLAY_STATE \
+  "widget.windows.window_occlusion_tracking_display_state.enabled"
+#define PREF_SESSION_LOCK \
+  "widget.windows.window_occlusion_tracking_session_lock.enabled"
+
+class WinWindowOcclusionTrackerInteractiveTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    // Shut down WinWindowOcclusionTracker if it exists.
+    // This could happen when WinWindowOcclusionTracker was initialized by other
+    // gtest
+    if (WinWindowOcclusionTracker::Get()) {
+      WinWindowOcclusionTracker::ShutDown();
+    }
+    EXPECT_EQ(nullptr, WinWindowOcclusionTracker::Get());
+
+    WinWindowOcclusionTracker::Ensure();
+    EXPECT_NE(nullptr, WinWindowOcclusionTracker::Get());
+
+    WinWindowOcclusionTracker::Get()->EnsureDisplayStatusObserver();
+    WinWindowOcclusionTracker::Get()->EnsureSessionChangeObserver();
+  }
+
+  void TearDown() override {
+    WinWindowOcclusionTracker::ShutDown();
+    EXPECT_EQ(nullptr, WinWindowOcclusionTracker::Get());
+  }
+
+  void SetNativeWindowBounds(HWND aHWnd, const LayoutDeviceIntRect aBounds) {
+    RECT wr;
+    wr.left = aBounds.X();
+    wr.top = aBounds.Y();
+    wr.right = aBounds.XMost();
+    wr.bottom = aBounds.YMost();
+
+    ::AdjustWindowRectEx(&wr, ::GetWindowLong(aHWnd, GWL_STYLE), FALSE,
+                         ::GetWindowLong(aHWnd, GWL_EXSTYLE));
+
+    // Make sure to keep the window onscreen, as AdjustWindowRectEx() may have
+    // moved part of it offscreen. But, if the original requested bounds are
+    // offscreen, don't adjust the position.
+    LayoutDeviceIntRect windowBounds(wr.left, wr.top, wr.right - wr.left,
+                                     wr.bottom - wr.top);
+
+    if (aBounds.X() >= 0) {
+      windowBounds.x = std::max(0, windowBounds.X());
+    }
+    if (aBounds.Y() >= 0) {
+      windowBounds.y = std::max(0, windowBounds.Y());
+    }
+    ::SetWindowPos(aHWnd, HWND_TOP, windowBounds.X(), windowBounds.Y(),
+                   windowBounds.Width(), windowBounds.Height(),
+                   SWP_NOREPOSITION);
+    EXPECT_TRUE(::UpdateWindow(aHWnd));
+  }
+
+  void CreateNativeWindowWithBounds(LayoutDeviceIntRect aBounds) {
+    mMockWinWidget = MockWinWidget::Create(
+        WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN, /* aExStyle = */ 0, aBounds);
+    EXPECT_NE(nullptr, mMockWinWidget.get());
+    HWND hwnd = mMockWinWidget->GetWnd();
+    SetNativeWindowBounds(hwnd, aBounds);
+    HRGN region = ::CreateRectRgn(0, 0, 0, 0);
+    EXPECT_NE(nullptr, region);
+    if (::GetWindowRgn(hwnd, region) == COMPLEXREGION) {
+      // On Windows 7, the newly created window has a complex region, which
+      // means it will be ignored during the occlusion calculation. So, force
+      // it to have a simple region so that we get test coverage on win 7.
+      RECT boundingRect;
+      EXPECT_TRUE(::GetWindowRect(hwnd, &boundingRect));
+      HRGN rectangularRegion = ::CreateRectRgnIndirect(&boundingRect);
+      EXPECT_NE(nullptr, rectangularRegion);
+      ::SetWindowRgn(hwnd, rectangularRegion, /* bRedraw = */ TRUE);
+      ::DeleteObject(rectangularRegion);
+    }
+    ::DeleteObject(region);
+
+    ::ShowWindow(hwnd, SW_SHOWNORMAL);
+    EXPECT_TRUE(UpdateWindow(hwnd));
+  }
+
+  RefPtr<MockWinWidget> CreateTrackedWindowWithBounds(
+      LayoutDeviceIntRect aBounds) {
+    RefPtr<MockWinWidget> window = MockWinWidget::Create(
+        WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN, /* aExStyle */ 0, aBounds);
+    EXPECT_NE(nullptr, window.get());
+    HWND hwnd = window->GetWnd();
+    ::ShowWindow(hwnd, SW_SHOWNORMAL);
+    WinWindowOcclusionTracker::Get()->Enable(window, window->GetWnd());
+    return window;
+  }
+
+  int GetNumVisibleRootWindows() {
+    return WinWindowOcclusionTracker::Get()->mNumVisibleRootWindows;
+  }
+
+  void OnDisplayStateChanged(bool aDisplayOn) {
+    WinWindowOcclusionTracker::Get()->OnDisplayStateChanged(aDisplayOn);
+  }
+
+  RefPtr<MockWinWidget> mMockWinWidget;
+};
+
+// Simple test completely covering a tracked window with a native window.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, SimpleOcclusion) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  window->SetExpectation(widget::OcclusionState::OCCLUDED);
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Simple test partially covering a tracked window with a native window.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, PartialOcclusion) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 200, 200));
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(0, 0, 50, 50));
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Simple test that a partly off screen tracked window, with the on screen part
+// occluded by a native window, is considered occluded.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, OffscreenOcclusion) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  // Move the tracked window 50 pixels offscreen to the left.
+  int screenLeft = ::GetSystemMetrics(SM_XVIRTUALSCREEN);
+  ::SetWindowPos(window->GetWnd(), HWND_TOP, screenLeft - 50, 0, 100, 100,
+                 SWP_NOZORDER | SWP_NOSIZE);
+
+  // Create a native window that covers the onscreen part of the tracked window.
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(screenLeft, 0, 50, 100));
+  window->SetExpectation(widget::OcclusionState::OCCLUDED);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Simple test with a tracked window and native window that do not overlap.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, SimpleVisible) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(200, 0, 100, 100));
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Simple test with a minimized tracked window and native window.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, SimpleHidden) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(200, 0, 100, 100));
+  // Iconify the tracked window and check that its occlusion state is HIDDEN.
+  ::CloseWindow(window->GetWnd());
+  window->SetExpectation(widget::OcclusionState::HIDDEN);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Test that minimizing and restoring a tracked window results in the occlusion
+// tracker re-registering for win events and detecting that a native window
+// occludes the tracked window.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest,
+       OcclusionAfterVisibilityToggle) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  window->SetExpectation(widget::OcclusionState::HIDDEN);
+  WinWindowOcclusionTracker::Get()->OnWindowVisibilityChanged(
+      window, /* aVisible = */ false);
+
+  // This makes the window iconic.
+  ::CloseWindow(window->GetWnd());
+
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  // HIDDEN state is set synchronously by OnWindowVsiblityChanged notification,
+  // before occlusion is calculated, so the above expectation will be met w/o an
+  // occlusion calculation.
+  // Loop until an occlusion calculation has run with no non-hidden windows.
+  while (GetNumVisibleRootWindows() != 0) {
+    // Need to pump events in order for UpdateOcclusionState to get called, and
+    // update the number of non hidden windows. When that number is 0,
+    // occlusion has been calculated with no visible tracked windows.
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  WinWindowOcclusionTracker::Get()->OnWindowVisibilityChanged(
+      window, /* aVisible = */ true);
+  // This opens the window made iconic above.
+  ::OpenIcon(window->GetWnd());
+
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  // Open a native window that occludes the visible tracked window.
+  window->SetExpectation(widget::OcclusionState::OCCLUDED);
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Test that locking the screen causes visible windows to become occluded.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, LockScreenVisibleOcclusion) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  window->SetExpectation(widget::OcclusionState::OCCLUDED);
+  // Unfortunately, this relies on knowing that NativeWindowOcclusionTracker
+  // uses SessionChangeObserver to listen for WM_WTSSESSION_CHANGE messages, but
+  // actually locking the screen isn't feasible.
+  DWORD currentSessionId = 0;
+  ::ProcessIdToSessionId(::GetCurrentProcessId(), &currentSessionId);
+  ::PostMessage(WinEventHub::Get()->GetWnd(), WM_WTSSESSION_CHANGE,
+                WTS_SESSION_LOCK, currentSessionId);
+
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    MSG msg;
+    bool gotMessage =
+        ::PeekMessageW(&msg, WinEventHub::Get()->GetWnd(), 0, 0, PM_REMOVE);
+    if (gotMessage) {
+      ::TranslateMessage(&msg);
+      ::DispatchMessageW(&msg);
+    }
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ false);
+    PR_Sleep(PR_INTERVAL_NO_WAIT);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Test that locking the screen leaves hidden windows as hidden.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, LockScreenHiddenOcclusion) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  // Iconify the tracked window and check that its occlusion state is HIDDEN.
+  ::CloseWindow(window->GetWnd());
+  window->SetExpectation(widget::OcclusionState::HIDDEN);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  // Force the state to VISIBLE.
+  window->NotifyOcclusionState(widget::OcclusionState::VISIBLE);
+
+  window->SetExpectation(widget::OcclusionState::HIDDEN);
+
+  // Unfortunately, this relies on knowing that NativeWindowOcclusionTracker
+  // uses SessionChangeObserver to listen for WM_WTSSESSION_CHANGE messages, but
+  // actually locking the screen isn't feasible.
+  DWORD currentSessionId = 0;
+  ::ProcessIdToSessionId(::GetCurrentProcessId(), &currentSessionId);
+  PostMessage(WinEventHub::Get()->GetWnd(), WM_WTSSESSION_CHANGE,
+              WTS_SESSION_LOCK, currentSessionId);
+
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    MSG msg;
+    bool gotMessage =
+        ::PeekMessageW(&msg, WinEventHub::Get()->GetWnd(), 0, 0, PM_REMOVE);
+    if (gotMessage) {
+      ::TranslateMessage(&msg);
+      ::DispatchMessageW(&msg);
+    }
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ false);
+    PR_Sleep(PR_INTERVAL_NO_WAIT);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Test that locking the screen from a different session doesn't mark window
+// as occluded.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, LockScreenDifferentSession) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 200, 200));
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  // Force the state to OCCLUDED.
+  window->NotifyOcclusionState(widget::OcclusionState::OCCLUDED);
+
+  // Generate a session change lock screen with a session id that's not
+  // currentSessionId.
+  DWORD currentSessionId = 0;
+  ::ProcessIdToSessionId(::GetCurrentProcessId(), &currentSessionId);
+  ::PostMessage(WinEventHub::Get()->GetWnd(), WM_WTSSESSION_CHANGE,
+                WTS_SESSION_LOCK, currentSessionId + 1);
+
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  // Create a native window to trigger occlusion calculation.
+  CreateNativeWindowWithBounds(LayoutDeviceIntRect(0, 0, 50, 50));
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    MSG msg;
+    bool gotMessage =
+        ::PeekMessageW(&msg, WinEventHub::Get()->GetWnd(), 0, 0, PM_REMOVE);
+    if (gotMessage) {
+      ::TranslateMessage(&msg);
+      ::DispatchMessageW(&msg);
+    }
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ false);
+    PR_Sleep(PR_INTERVAL_NO_WAIT);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
+
+// Test that display off & on power state notification causes visible windows to
+// become occluded, then visible.
+TEST_F(WinWindowOcclusionTrackerInteractiveTest, DisplayOnOffHandling) {
+  RefPtr<MockWinWidget> window =
+      CreateTrackedWindowWithBounds(LayoutDeviceIntRect(0, 0, 100, 100));
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  window->SetExpectation(widget::OcclusionState::OCCLUDED);
+
+  // Turning display off and on isn't feasible, so send a notification.
+  OnDisplayStateChanged(/* aDisplayOn */ false);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+
+  window->SetExpectation(widget::OcclusionState::VISIBLE);
+  OnDisplayStateChanged(/* aDisplayOn */ true);
+  while (window->IsExpectingCall()) {
+    WinWindowOcclusionTracker::Get()->TriggerCalculation();
+
+    NS_ProcessNextEvent(nullptr, /* aMayWait = */ true);
+  }
+  EXPECT_FALSE(window->IsExpectingCall());
+}
diff --git a/widget/tests/gtest/moz.build b/widget/tests/gtest/moz.build
new file mode 100644
index 0000000000..613844fa78
--- /dev/null
+++ b/widget/tests/gtest/moz.build
@@ -0,0 +1,27 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at http://mozilla.org/MPL/2.0/.
+
+UNIFIED_SOURCES = [
+    "TestTimeConverter.cpp",
+    "TestTouchResampler.cpp",
+]
+
+if CONFIG["OS_ARCH"] == "WINNT":
+    UNIFIED_SOURCES += [
+        "MockWinWidget.cpp",
+        "TestWinHeaderOnlyUtils.cpp",
+        "TestWinMessageLoggingUtils.cpp",
+        "TestWinWindowOcclusionTracker.cpp",
+        "TestWinWindowOcclusionTrackerInteractive.cpp",
+    ]
+
+FINAL_LIBRARY = "xul-gtest"
+
+LOCAL_INCLUDES += [
+    "/widget",
+]
+
+DisableStlWrapping()
diff --git a/widget/tests/mochitest.toml b/widget/tests/mochitest.toml
new file mode 100644
index 0000000000..32dcf5c795
--- /dev/null
+++ b/widget/tests/mochitest.toml
@@ -0,0 +1,53 @@
+[DEFAULT]
+support-files = ["clipboard_helper.js"]
+
+["test_AltGr_key_events_in_web_content_on_windows.html"]
+run-if = ["os == 'win'"]
+skip-if = ["headless"] # bug 1410525
+
+["test_actionhint.html"]
+
+["test_assign_event_data.html"]
+skip-if = [
+  "os == 'mac'", # bug 933303
+  "os == 'android' && debug", # bug 1285414
+  "android_version == '24'",
+  "headless && os == 'win'",
+]
+
+["test_autocapitalize.html"]
+
+["test_clipboard.html"]
+skip-if = [
+  "headless", # bug 1852983
+  "display == 'wayland' && os_version == '22.04'",  # Bug 1857075
+]
+support-files = ["file_test_clipboard.js"]
+
+["test_clipboard_asyncGetData.html"]
+skip-if = ["display == 'wayland'"] # Bug 1864211
+support-files = ["file_test_clipboard_asyncGetData.js"]
+
+["test_clipboard_asyncSetData.html"]
+support-files = ["file_test_clipboard_asyncSetData.js"]
+
+["test_contextmenu_by_mouse_on_unix.html"]
+run-if = ["os == 'linux'"]
+skip-if = ["headless"] # headless widget doesn't dispatch contextmenu event by mouse event.
+
+["test_keypress_event_with_alt_on_mac.html"]
+run-if = ["os == 'mac'"]
+
+["test_mouse_event_with_control_on_mac.html"]
+run-if = ["os == 'mac'"]
+support-files = ["!/gfx/layers/apz/test/mochitest/apz_test_utils.js"]
+
+["test_picker_no_crash.html"]
+skip-if = [
+  "asan",
+  "debug", # bug 1267491
+]
+support-files = ["window_picker_no_crash_child.html"]
+
+["test_textScaleFactor_system_font.html"]
+skip-if = ["display == 'wayland' && os_version == '22.04'"]  # Bug 1857075
diff --git a/widget/tests/moz.build b/widget/tests/moz.build
new file mode 100644
index 0000000000..fe0d068efd
--- /dev/null
+++ b/widget/tests/moz.build
@@ -0,0 +1,125 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+with Files("**"):
+    BUG_COMPONENT = ("Core", "Widget")
+
+with Files("browser/browser_test_ContentCache.html"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("unit/*macwebapputils*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("unit/*taskbar_jumplistitems*"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("TestChromeMargin.cpp"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("*413277*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*428405*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*429954*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*444800*"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("*466599*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*478536*"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("*485118*"):
+    BUG_COMPONENT = ("Toolkit", "UI Widgets")
+
+with Files("*517396*"):
+    BUG_COMPONENT = ("Toolkit", "UI Widgets")
+
+with Files("*522217*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*538242*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*565392*"):
+    BUG_COMPONENT = ("Core", "DOM: Serializers")
+
+with Files("*586713*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*593307*"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("*596600*"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("*673301*"):
+    BUG_COMPONENT = ("Firefox", "Bookmarks & History")
+
+with Files("test_assign_event_data.html"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("test_input_events_on_deactive_window.xhtml"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("*chrome_context_menus_win*"):
+    BUG_COMPONENT = ("Core", "General")
+
+with Files("*composition_text_querycontent*"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("*key_event_counts*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*imestate*"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+with Files("*mouse_scroll*"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("*native*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*panel_mouse_coords*"):
+    BUG_COMPONENT = ("Core", "Widget: Gtk")
+
+with Files("*picker_no_crash*"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("*platform_colors*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*position_on_resize*"):
+    BUG_COMPONENT = ("Core", "Widget: Gtk")
+
+with Files("test_sizemode_events.xhtml"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*system_status_bar*"):
+    BUG_COMPONENT = ("Core", "Widget: Cocoa")
+
+with Files("*taskbar_progress*"):
+    BUG_COMPONENT = ("Core", "Widget: Win32")
+
+with Files("*wheeltransaction*"):
+    BUG_COMPONENT = ("Core", "DOM: UI Events & Focus Handling")
+
+
+XPCSHELL_TESTS_MANIFESTS += ["unit/xpcshell.toml"]
+MOCHITEST_MANIFESTS += ["mochitest.toml"]
+MOCHITEST_CHROME_MANIFESTS += ["chrome.toml"]
+BROWSER_CHROME_MANIFESTS += ["browser/browser.toml"]
+
+# if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
+#
+#     Test disabled because it requires the internal API. Re-enabling this test
+#     is bug 652123.
+#     CPP_UNIT_TESTS += ['TestChromeMargin']
diff --git a/widget/tests/native_menus_window.xhtml b/widget/tests/native_menus_window.xhtml
new file mode 100644
index 0000000000..2b3d3f2aa3
--- /dev/null
+++ b/widget/tests/native_menus_window.xhtml
@@ -0,0 +1,282 @@
+<?xml version="1.0"?>
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+
+<window id="NativeMenuWindow"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        width="300"
+        height="300"
+        onload="onLoad();"
+        title="Native Menu Test">
+
+  <command id="cmd_FooItem0" oncommand="executedCommandID = 'cmd_FooItem0';"/>
+  <command id="cmd_FooItem1" oncommand="executedCommandID = 'cmd_FooItem1';"/>
+  <command id="cmd_BarItem0" oncommand="executedCommandID = 'cmd_BarItem0';"/>
+  <command id="cmd_BarItem1" oncommand="executedCommandID = 'cmd_BarItem1';"/>
+  <command id="cmd_NewItem0" oncommand="executedCommandID = 'cmd_NewItem0';"/>
+  <command id="cmd_NewItem1" oncommand="executedCommandID = 'cmd_NewItem1';"/>
+  <command id="cmd_NewItem2" oncommand="executedCommandID = 'cmd_NewItem2';"/>
+  <command id="cmd_NewItem3" oncommand="executedCommandID = 'cmd_NewItem3';"/>
+  <command id="cmd_NewItem4" oncommand="executedCommandID = 'cmd_NewItem4';"/>
+  <command id="cmd_NewItem5" oncommand="executedCommandID = 'cmd_NewItem5';"/>
+
+  <!-- We do not modify any menus or menu items defined here in testing. These
+       serve as a baseline structure for us to test after other modifications.
+       We add children to the menubar defined here and test by modifying those
+       children. -->
+  <menubar id="nativemenubar">
+    <menu id="foo" label="Foo">
+      <menupopup>
+        <menuitem label="FooItem0" command="cmd_FooItem0"/>
+        <menuitem label="FooItem1" command="cmd_FooItem1"/>
+        <menuseparator/>
+        <menu label="Bar">
+          <menupopup>
+            <menuitem label="BarItem0" command="cmd_BarItem0"/>
+            <menuitem label="BarItem1" command="cmd_BarItem1"/>
+          </menupopup>
+        </menu>
+      </menupopup>
+    </menu>
+  </menubar>
+
+  <script type="application/javascript"><![CDATA[
+
+    function ok(condition, message) {
+      window.arguments[0].SimpleTest.ok(condition, message);
+    }
+
+    function onTestsFinished() {
+      window.close();
+      window.arguments[0].SimpleTest.finish();
+    }
+
+    // Force a menu to update itself. All of the menus parents will be updated
+    // as well. An empty string will force a complete menu system reload.
+    function forceUpdateNativeMenuAt(location) {
+      var utils = window.windowUtils;
+      try {
+        utils.forceUpdateNativeMenuAt(location);
+      }
+      catch (e) {
+        dump(e + "\n");
+      }
+    }
+
+    var executedCommandID = "";
+
+    function testItem(location, targetID) {
+      var utils = window.windowUtils;
+      var correctCommandHandler = false;
+      try {
+        utils.activateNativeMenuItemAt(location);
+        correctCommandHandler = executedCommandID == targetID;
+      }
+      catch (e) {
+        dump(e + "\n");
+      }
+      finally {
+        executedCommandID = "";
+      }
+      return correctCommandHandler;
+    }
+
+    function createXULMenuPopup() {
+      const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+      var item = document.createElementNS(XUL_NS, "menupopup");
+      return item;
+    }
+
+    function createXULMenu(aLabel) {
+      const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+      var item = document.createElementNS(XUL_NS, "menu");
+      item.setAttribute("label", aLabel);
+      return item;
+    }
+
+    function createXULMenuItem(aLabel, aCommandId) {
+      const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+      var item = document.createElementNS(XUL_NS, "menuitem");
+      item.setAttribute("label", aLabel);
+      item.setAttribute("command", aCommandId);
+      return item;
+    }
+
+    function runBaseMenuTests() {
+      forceUpdateNativeMenuAt("0|3");
+      return testItem("0|0", "cmd_FooItem0") &&
+             testItem("0|1", "cmd_FooItem1") &&
+             testItem("0|3|0", "cmd_BarItem0") &&
+             testItem("0|3|1", "cmd_BarItem1");
+    }
+
+    function onLoad() {
+      var _delayedOnLoad = function() {
+        // First let's run the base menu tests.
+        ok(runBaseMenuTests());
+
+        // Set up some nodes that we'll use.
+        var menubarNode = document.getElementById("nativemenubar");
+        var newMenu0 = createXULMenu("NewMenu0");
+        var newMenu1 = createXULMenu("NewMenu1");
+        var newMenuPopup0 = createXULMenuPopup();
+        var newMenuPopup1 = createXULMenuPopup();
+        var newMenuItem0 = createXULMenuItem("NewMenuItem0", "cmd_NewItem0");
+        var newMenuItem1 = createXULMenuItem("NewMenuItem1", "cmd_NewItem1");
+        var newMenuItem2 = createXULMenuItem("NewMenuItem2", "cmd_NewItem2");
+        var newMenuItem3 = createXULMenuItem("NewMenuItem3", "cmd_NewItem3");
+        var newMenuItem4 = createXULMenuItem("NewMenuItem4", "cmd_NewItem4");
+        var newMenuItem5 = createXULMenuItem("NewMenuItem5", "cmd_NewItem5");
+
+        // Create another submenu with hierarchy via DOM manipulation.
+        // ******************
+        // * Foo * NewMenu0 * <- Menu bar 
+        // ******************
+        //       ****************
+        //       * NewMenuItem0 * <- NewMenu0 submenu
+        //       ****************
+        //       * NewMenuItem1 *
+        //       ****************
+        //       * NewMenuItem2 *
+        //       *******************************
+        //       * NewMenu1   > * NewMenuItem3 * <- NewMenu1 submenu
+        //       *******************************
+        //                      * NewMenuItem4 *
+        //                      ****************
+        //                      * NewMenuItem5 *
+        //                      ****************
+        newMenu0.appendChild(newMenuPopup0);
+        newMenuPopup0.appendChild(newMenuItem0);
+        newMenuPopup0.appendChild(newMenuItem1);
+        newMenuPopup0.appendChild(newMenuItem2);
+        newMenuPopup0.appendChild(newMenu1);
+        newMenu1.appendChild(newMenuPopup1);
+        newMenuPopup1.appendChild(newMenuItem3);
+        newMenuPopup1.appendChild(newMenuItem4);
+        newMenuPopup1.appendChild(newMenuItem5);
+        //XXX - we have to append the menu to the top-level of the menu bar
+        // only after constructing it. If we append before construction, it is
+        // invalid because it has no children and we don't validate it if we add
+        // children later.
+        menubarNode.appendChild(newMenu0);
+        forceUpdateNativeMenuAt("1|3");
+        // Run basic tests again.
+        ok(runBaseMenuTests());
+
+        // Error strings.
+        var sa = "Command handler(s) should have activated";
+        var sna = "Command handler(s) should not have activated";
+
+        // Test middle items.
+        ok(testItem("1|1", "cmd_NewItem1"), sa);
+        ok(testItem("1|3|1", "cmd_NewItem4"), sa);
+
+        // Hide newMenu0.
+        newMenu0.setAttribute("hidden", "true");
+        ok(runBaseMenuTests(), sa); // the base menu should still be unhidden
+        ok(!testItem("1|0", ""), sna);
+        ok(!testItem("1|1", ""), sna);
+        ok(!testItem("1|2", ""), sna);
+        ok(!testItem("1|3|0", ""), sna);
+        ok(!testItem("1|3|1", ""), sna);
+        ok(!testItem("1|3|2", ""), sna);
+
+        // Show newMenu0.
+        newMenu0.setAttribute("hidden", "false");
+        forceUpdateNativeMenuAt("1|3");
+        ok(runBaseMenuTests(), sa);
+        ok(testItem("1|0", "cmd_NewItem0"), sa);
+        ok(testItem("1|1", "cmd_NewItem1"), sa);
+        ok(testItem("1|2", "cmd_NewItem2"), sa);
+        ok(testItem("1|3|0", "cmd_NewItem3"), sa);
+        ok(testItem("1|3|1", "cmd_NewItem4"), sa);
+        ok(testItem("1|3|2", "cmd_NewItem5"), sa);
+
+        // Hide items.
+        newMenuItem1.setAttribute("hidden", "true");
+        newMenuItem4.setAttribute("hidden", "true");
+        forceUpdateNativeMenuAt("1|2");
+        ok(runBaseMenuTests(), sa);
+        ok(testItem("1|0", "cmd_NewItem0"), sa);
+        ok(testItem("1|1", "cmd_NewItem2"), sa);
+        ok(!testItem("1|2", ""), sna);
+        ok(testItem("1|2|0", "cmd_NewItem3"), sa);
+        ok(testItem("1|2|1", "cmd_NewItem5"), sa);
+        ok(!testItem("1|2|2", ""), sna);
+
+        // Show items.
+        newMenuItem1.setAttribute("hidden", "false");
+        newMenuItem4.setAttribute("hidden", "false");
+        forceUpdateNativeMenuAt("1|3");
+        ok(runBaseMenuTests(), sa);
+        ok(testItem("1|0", "cmd_NewItem0"), sa);
+        ok(testItem("1|1", "cmd_NewItem1"), sa);
+        ok(testItem("1|2", "cmd_NewItem2"), sa);
+        ok(testItem("1|3|0", "cmd_NewItem3"), sa);
+        ok(testItem("1|3|1", "cmd_NewItem4"), sa);
+        ok(testItem("1|3|2", "cmd_NewItem5"), sa);
+
+        // At this point in the tests the state of the menus has been returned
+        // to the originally diagramed state.
+
+        // Test command disabling
+        var cmd_NewItem0 = document.getElementById("cmd_NewItem0");
+        ok(testItem("1|0", "cmd_NewItem0"), sa);
+        cmd_NewItem0.setAttribute("disabled", "true");
+        ok(!testItem("1|0", "cmd_NewItem0"), sna);
+        cmd_NewItem0.removeAttribute("disabled");
+        ok(testItem("1|0", "cmd_NewItem0"), sa);
+
+        // Remove menu.
+        menubarNode.removeChild(newMenu0);
+        ok(runBaseMenuTests(), sa);
+        ok(!testItem("1|0", ""), sna);
+        ok(!testItem("1|1", ""), sna);
+        ok(!testItem("1|2", ""), sna);
+        ok(!testItem("1|3|0", ""), sna);
+        ok(!testItem("1|3|1", ""), sna);
+        ok(!testItem("1|3|2", ""), sna);
+        // return state to original diagramed state
+        menubarNode.appendChild(newMenu0);
+
+        // Test for bug 447042, make sure that adding a menu node with no children
+        // to the menu bar and then adding another menu node with children works.
+        // Menus with no children don't get their native menu items shown and that
+        // caused internal arrays to get out of sync and an append crashed.
+        var tmpMenu0 = createXULMenu("tmpMenu0");
+        menubarNode.removeChild(newMenu0);
+        menubarNode.appendChild(tmpMenu0);
+        menubarNode.appendChild(newMenu0);
+        forceUpdateNativeMenuAt("1|3");
+        ok(runBaseMenuTests());
+        ok(testItem("1|0", "cmd_NewItem0"), sa);
+        ok(testItem("1|1", "cmd_NewItem1"), sa);
+        ok(testItem("1|2", "cmd_NewItem2"), sa);
+        ok(testItem("1|3|0", "cmd_NewItem3"), sa);
+        ok(testItem("1|3|1", "cmd_NewItem4"), sa);
+        ok(testItem("1|3|2", "cmd_NewItem5"), sa);
+        // return state to original diagramed state
+        menubarNode.removeChild(tmpMenu0);
+
+        // This test is basically a crash test for bug 433858.
+        newMenuItem1.setAttribute("hidden", "true");
+        newMenuItem2.setAttribute("hidden", "true");
+        newMenu1.setAttribute("hidden", "true");
+        forceUpdateNativeMenuAt("1");
+        newMenuItem1.setAttribute("hidden", "false");
+        newMenuItem2.setAttribute("hidden", "false");
+        newMenu1.setAttribute("hidden", "false");
+        forceUpdateNativeMenuAt("1");
+
+        onTestsFinished();
+      }
+
+      setTimeout(_delayedOnLoad, 1000);
+    }
+
+  ]]></script>
+</window>
diff --git a/widget/tests/standalone_native_menu_window.xhtml b/widget/tests/standalone_native_menu_window.xhtml
new file mode 100644
index 0000000000..4155126ad5
--- /dev/null
+++ b/widget/tests/standalone_native_menu_window.xhtml
@@ -0,0 +1,374 @@
+<?xml version="1.0"?>
+
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+
+<window id="StandaloneNativeMenuWindow"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        width="300"
+        height="300"
+        onload="onLoad();"
+        title="nsIStandaloneNativeMenu Test">
+
+  <command id="cmd_FooItem0" oncommand="gExecutedCommandID = 'cmd_FooItem0';"/>
+  <command id="cmd_FooItem1" oncommand="gExecutedCommandID = 'cmd_FooItem1';"/>
+  <command id="cmd_BarItem0" oncommand="gExecutedCommandID = 'cmd_BarItem0';"/>
+  <command id="cmd_BarItem1" oncommand="gExecutedCommandID = 'cmd_BarItem1';"/>
+  <command id="cmd_NewItem0" oncommand="gExecutedCommandID = 'cmd_NewItem0';"/>
+  <command id="cmd_NewItem1" oncommand="gExecutedCommandID = 'cmd_NewItem1';"/>
+  <command id="cmd_NewItem2" oncommand="gExecutedCommandID = 'cmd_NewItem2';"/>
+  <command id="cmd_NewItem3" oncommand="gExecutedCommandID = 'cmd_NewItem3';"/>
+  <command id="cmd_NewItem4" oncommand="gExecutedCommandID = 'cmd_NewItem4';"/>
+  <command id="cmd_NewItem5" oncommand="gExecutedCommandID = 'cmd_NewItem5';"/>
+
+  <!-- We do not modify any menus or menu items defined here in testing. These
+       serve as a baseline structure for us to test after other modifications.
+       We add children to the menubar defined here and test by modifying those
+       children. -->
+  <popupset>
+    <menupopup id="standalonenativemenu">
+      <menu id="foo" label="Foo">
+        <menupopup>
+          <menuitem label="FooItem0" command="cmd_FooItem0"/>
+          <menuitem label="FooItem1" command="cmd_FooItem1"/>
+          <menuseparator/>
+          <menu label="Bar">
+            <menupopup>
+              <menuitem label="BarItem0" command="cmd_BarItem0"/>
+              <menuitem label="BarItem1" command="cmd_BarItem1"/>
+            </menupopup>
+          </menu>
+        </menupopup>
+      </menu>
+    </menupopup>
+  </popupset>
+
+  <script type="application/javascript"><![CDATA[
+
+    function ok(condition, message) {
+      window.arguments[0].SimpleTest.ok(condition, message);
+    }
+
+    function is(a, b, message) {
+      window.arguments[0].SimpleTest.is(a, b, message);
+    }
+
+    function isnot(a, b, message) {
+      window.arguments[0].SimpleTest.isnot(a, b, message);
+    }
+
+    function todo(condition, message) {
+      window.arguments[0].SimpleTest.todo(condition, message);
+    }
+
+    function todo_is(a, b, message) {
+      window.arguments[0].SimpleTest.todo_is(a, b, message);
+    }
+
+    function todo_isnot(a, b, message) {
+      window.arguments[0].SimpleTest.todo_isnot(a, b, message);
+    }
+
+    function onTestsFinished() {
+      window.close();
+      window.arguments[0].SimpleTest.finish();
+    }
+
+    var gExecutedCommandID;
+
+    // returns the executed command ID, or the empty string if nothing was executed
+    function activateItem(menu, location) {
+      try {
+        gExecutedCommandID = "";
+        menu.menuWillOpen();
+        menu.activateNativeMenuItemAt(location);
+        return gExecutedCommandID;
+      }
+      catch (e) {
+        // activateNativeMenuItemAt throws an exception if the item was not found
+        dump(e + "\n");
+        return "";
+      }
+    }
+
+    function testItem(menu, location, targetID) {
+      var activatedCommandID = activateItem(menu, location);
+      return activatedCommandID != "" && activatedCommandID == targetID;
+    }
+
+    var XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+
+    function createXULMenuPopup() {
+      return document.createElementNS(XUL_NS, "menupopup");
+    }
+
+    function createXULMenu(aLabel) {
+      var item = document.createElementNS(XUL_NS, "menu");
+      item.setAttribute("label", aLabel);
+      return item;
+    }
+
+    function createXULMenuItem(aLabel, aCommandId) {
+      var item = document.createElementNS(XUL_NS, "menuitem");
+      item.setAttribute("label", aLabel);
+      item.setAttribute("command", aCommandId);
+      return item;
+    }
+
+    function runBaseMenuTests(menu) {
+      menu.forceUpdateNativeMenuAt("0|3");
+      return testItem(menu, "0|0", "cmd_FooItem0") &&
+             testItem(menu, "0|1", "cmd_FooItem1") &&
+             testItem(menu, "0|3|0", "cmd_BarItem0") &&
+             testItem(menu, "0|3|1", "cmd_BarItem1");
+    }
+
+    function createStandaloneNativeMenu(menuNode) {
+      try {
+        let menu = Cc["@mozilla.org/widget/standalonenativemenu;1"].createInstance(Ci.nsIStandaloneNativeMenu);
+        menu.init(menuNode);
+        return menu;
+      } catch (e) {
+        ok(false, "Failed creating nsIStandaloneNativeMenu instance");
+        throw e;
+      }
+    }
+
+    function runDetachedMenuTests(addMenupopupBeforeCreatingSNM) {
+      let menu = createXULMenu("Detached menu");
+      menu.setAttribute("image", 'data:image/svg+xml,<svg%20xmlns="http://www.w3.org/2000/svg"%20width="32"%20height="32"><circle%20cx="16"%20cy="16"%20r="16"/></svg>');
+      let menupopup = createXULMenuPopup();
+
+      let popupShowingFired = false;
+      let itemActivated = false;
+
+      menupopup.addEventListener("popupshowing", function (e) {
+        popupShowingFired = true;
+
+        let menuitem = document.createElementNS(XUL_NS, "menuitem");
+        menuitem.setAttribute("label", "detached menu item");
+        /* eslint-disable-next-line no-shadow */
+        menuitem.addEventListener("command", function (e) {
+          itemActivated = true;
+        })
+        menupopup.appendChild(menuitem);
+      })
+
+      // It shouldn't make a difference whether the menupopup is added to the
+      // menu element before or after we create the nsIStandaloneNativeMenu
+      // instance with it. We test both orders by calling this function twice
+      // with different values for addMenupopupBeforeCreatingSNM.
+
+      var menuSNM = null; // the nsIStandaloneNativeMenu object for "menu"
+      if (addMenupopupBeforeCreatingSNM) {
+        menu.appendChild(menupopup);
+        menuSNM = createStandaloneNativeMenu(menu);
+      } else {
+        menuSNM = createStandaloneNativeMenu(menu);
+        menu.appendChild(menupopup);
+      }
+
+      try {
+        ok(!popupShowingFired, "popupshowing shouldn't have fired before our call to menuWillOpen()");
+        menuSNM.menuWillOpen();
+        ok(popupShowingFired, "calling menuWillOpen() should have notified our popupshowing listener");
+
+        ok(!itemActivated, "our dynamically-added menuitem shouldn't have been activated yet");
+        menuSNM.activateNativeMenuItemAt("0");
+        ok(itemActivated, "the new menu item should have been activated now");
+      } catch (ex) {
+        ok(false, "dynamic menu test failed: " + ex);
+      }
+    }
+
+    function onLoad() {
+      var _delayedOnLoad = function() {
+        try {
+
+        var menuNode = document.getElementById("standalonenativemenu");
+        var menu = createStandaloneNativeMenu(menuNode);
+
+        // First let's run the base menu tests.
+        ok(runBaseMenuTests(menu), "base tests #1");
+
+        // Set up some nodes that we'll use.
+        var newMenu0 = createXULMenu("NewMenu0");
+        var newMenu1 = createXULMenu("NewMenu1");
+        var newMenuPopup0 = createXULMenuPopup();
+        var newMenuPopup1 = createXULMenuPopup();
+        var newMenuItem0 = createXULMenuItem("NewMenuItem0", "cmd_NewItem0");
+        var newMenuItem1 = createXULMenuItem("NewMenuItem1", "cmd_NewItem1");
+        var newMenuItem2 = createXULMenuItem("NewMenuItem2", "cmd_NewItem2");
+        var newMenuItem3 = createXULMenuItem("NewMenuItem3", "cmd_NewItem3");
+        var newMenuItem4 = createXULMenuItem("NewMenuItem4", "cmd_NewItem4");
+        var newMenuItem5 = createXULMenuItem("NewMenuItem5", "cmd_NewItem5");
+
+        // Create another submenu with hierarchy via DOM manipulation.
+        // ******************
+        // * Foo * NewMenu0 * <- Menu bar
+        // ******************
+        //       ****************
+        //       * NewMenuItem0 * <- NewMenu0 submenu
+        //       ****************
+        //       * NewMenuItem1 *
+        //       ****************
+        //       * NewMenuItem2 *
+        //       *******************************
+        //       * NewMenu1   > * NewMenuItem3 * <- NewMenu1 submenu
+        //       *******************************
+        //                      * NewMenuItem4 *
+        //                      ****************
+        //                      * NewMenuItem5 *
+        //                      ****************
+        newMenu0.appendChild(newMenuPopup0);
+        newMenuPopup0.appendChild(newMenuItem0);
+        newMenuPopup0.appendChild(newMenuItem1);
+        newMenuPopup0.appendChild(newMenuItem2);
+        newMenuPopup0.appendChild(newMenu1);
+        newMenu1.appendChild(newMenuPopup1);
+        newMenuPopup1.appendChild(newMenuItem3);
+        newMenuPopup1.appendChild(newMenuItem4);
+        newMenuPopup1.appendChild(newMenuItem5);
+        //XXX - we have to append the menu to the top-level of the menu bar
+        // only after constructing it. If we append before construction, it is
+        // invalid because it has no children and we don't validate it if we add
+        // children later.
+        menuNode.appendChild(newMenu0);
+        menu.forceUpdateNativeMenuAt("1|3");
+        // Run basic tests again.
+        ok(runBaseMenuTests(menu), "base tests #2");
+
+        // Error strings.
+        var sa = "Command handler(s) should have activated";
+        var sna = "Command handler(s) should not have activated";
+
+        // Test middle items.
+        is(activateItem(menu, "1|1"), "cmd_NewItem1", "#1:" + sa);
+        is(activateItem(menu, "1|3|1"), "cmd_NewItem4", "#2:" + sa);
+
+        // Hide newMenu0.
+        newMenu0.setAttribute("hidden", "true");
+        ok(runBaseMenuTests(menu), "base tests #3: " + sa); // the base menu should still be unhidden
+        is(activateItem(menu, "1|0"), "", "#3:" + sna);
+        is(activateItem(menu, "1|1"), "", "#4:" + sna);
+        is(activateItem(menu, "1|2"), "", "#5:" + sna);
+        is(activateItem(menu, "1|3|0"), "", "#6:" + sna);
+        is(activateItem(menu, "1|3|1"), "", "#7:" + sna);
+        is(activateItem(menu, "1|3|2"), "", "#8:" + sna);
+
+        // Show newMenu0.
+        newMenu0.setAttribute("hidden", "false");
+        menu.forceUpdateNativeMenuAt("1|3");
+        ok(runBaseMenuTests(menu), "base tests #4:" + sa);
+        is(activateItem(menu, "1|0"), "cmd_NewItem0", "#9:" + sa);
+        is(activateItem(menu, "1|1"), "cmd_NewItem1", "#10:" + sa);
+        is(activateItem(menu, "1|2"), "cmd_NewItem2", "#11:" + sa);
+        is(activateItem(menu, "1|3|0"), "cmd_NewItem3", "#12:" + sa);
+        is(activateItem(menu, "1|3|1"), "cmd_NewItem4", "#13:" + sa);
+        is(activateItem(menu, "1|3|2"), "cmd_NewItem5", "#14:" + sa);
+
+        // Hide items.
+        newMenuItem1.setAttribute("hidden", "true");
+        newMenuItem4.setAttribute("hidden", "true");
+        menu.forceUpdateNativeMenuAt("1|2");
+        ok(runBaseMenuTests(menu), "base tests #5:" + sa);
+        is(activateItem(menu, "1|0"), "cmd_NewItem0", "#15:" + sa);
+        is(activateItem(menu, "1|1"), "cmd_NewItem2", "#16:" + sa);
+        is(activateItem(menu, "1|2"), "", "#17:" + sna);
+        is(activateItem(menu, "1|2|0"), "cmd_NewItem3", "#18:" + sa);
+        is(activateItem(menu, "1|2|1"), "cmd_NewItem5", "#19:" + sa);
+        is(activateItem(menu, "1|2|2"), "", "#20:" + sna);
+
+        // Show items.
+        newMenuItem1.setAttribute("hidden", "false");
+        newMenuItem4.setAttribute("hidden", "false");
+        //forceUpdateNativeMenuAt("1|3");
+        ok(runBaseMenuTests(menu), "base tests #6:" + sa);
+        is(activateItem(menu, "1|0"), "cmd_NewItem0", "#21:" + sa);
+        is(activateItem(menu, "1|1"), "cmd_NewItem1", "#22:" + sa);
+        is(activateItem(menu, "1|2"), "cmd_NewItem2", "#23:" + sa);
+        is(activateItem(menu, "1|3|0"), "cmd_NewItem3", "#24:" + sa);
+        is(activateItem(menu, "1|3|1"), "cmd_NewItem4", "#25:" + sa);
+        is(activateItem(menu, "1|3|2"), "cmd_NewItem5", "#26:" + sa);
+
+        // At this point in the tests the state of the menus has been returned
+        // to the originally diagramed state.
+
+        // Remove menu.
+        menuNode.removeChild(newMenu0);
+        ok(runBaseMenuTests(menu), "base tests #7:" + sa);
+        is(activateItem(menu, "1|0"), "", "#27:" + sna);
+        is(activateItem(menu, "1|1"), "", "#28:" + sna);
+        is(activateItem(menu, "1|2"), "", "#29:" + sna);
+        is(activateItem(menu, "1|3|0"), "", "#30:" + sna);
+        is(activateItem(menu, "1|3|1"), "", "#31:" + sna);
+        is(activateItem(menu, "1|3|2"), "", "#32:" + sna);
+        // return state to original diagramed state
+        menuNode.appendChild(newMenu0);
+
+        // The following is based on a similar test bug 447042 from the native
+        // menu bar test: Make sure that adding a menu node with no children
+        // to the menu bar and then adding another menu node with children works.
+        // In the menubar, root menus with no children are skipped - they're not
+        // visible in the menubar.
+        // Regular menus currently treat submenus without children differently:
+        // submenus without children *are* visible.
+        // We may want to change this in the future.
+        // After the mutation below we have the following root menu content:
+        //  - [0] Foo (with submenu)
+        //  - [1] tmpMenu0 (with empty submenu)
+        //  - [2] NewMenu0 (with submenu)
+        // Since the empty tmpMenu0 item is not skipped, NewMenu0 has index 2,
+        // so we use "2|..." below, rather than the "1|..." that's used in the
+        // menubar test.
+        var tmpMenu0 = createXULMenu("tmpMenu0");
+        menuNode.removeChild(newMenu0);
+        menuNode.appendChild(tmpMenu0);
+        menuNode.appendChild(newMenu0);
+        menu.forceUpdateNativeMenuAt("2|3");
+        ok(runBaseMenuTests(menu), "base tests #8");
+        is(activateItem(menu, "2|0"), "cmd_NewItem0", "#33:" + sa);
+        is(activateItem(menu, "2|1"), "cmd_NewItem1", "#34:" + sa);
+        is(activateItem(menu, "2|2"), "cmd_NewItem2", "#35:" + sa);
+        is(activateItem(menu, "2|3|0"), "cmd_NewItem3", "#36:" + sa);
+        is(activateItem(menu, "2|3|1"), "cmd_NewItem4", "#37:" + sa);
+        is(activateItem(menu, "2|3|2"), "cmd_NewItem5", "#38:" + sa);
+        // return state to original diagramed state
+        menuNode.removeChild(tmpMenu0);
+
+        // This test is basically a crash test for bug 433858.
+        newMenuItem1.setAttribute("hidden", "true");
+        newMenuItem2.setAttribute("hidden", "true");
+        newMenu1.setAttribute("hidden", "true");
+        menu.forceUpdateNativeMenuAt("1");
+        newMenuItem1.setAttribute("hidden", "false");
+        newMenuItem2.setAttribute("hidden", "false");
+        newMenu1.setAttribute("hidden", "false");
+        menu.forceUpdateNativeMenuAt("1");
+
+        // Check that "path components" which are out-of-range are not ignored.
+        // There are only two menu items in the root menu (with index 0 and 1),
+        // so index 2 is out of range.
+        is(activateItem(menu, "2|1|0"), "", "#39:" + sna);
+
+        // Check that hiding and then un-hiding the root menu doesn't result in
+        // a cyclic native menu structure.
+        menuNode.setAttribute("collapsed", "true");
+        menuNode.removeAttribute("collapsed");
+        ok(runBaseMenuTests(menu), "base tests #9");
+
+        // Run tests where the menu nodes are not in the document's node tree.
+        runDetachedMenuTests(false);
+        runDetachedMenuTests(true);
+
+        } catch (e) {
+          ok(false, "Caught an exception: " + e);
+        } finally {
+          onTestsFinished();
+        }
+      }
+
+      setTimeout(_delayedOnLoad, 1000);
+    }
+
+  ]]></script>
+</window>
diff --git a/widget/tests/system_font_changes.xhtml b/widget/tests/system_font_changes.xhtml
new file mode 100644
index 0000000000..1cef650015
--- /dev/null
+++ b/widget/tests/system_font_changes.xhtml
@@ -0,0 +1,63 @@
+<?xml version="1.0"?>
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+
+<window id="system_font_changes_window"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        width="300"
+        height="300"
+        onload="start();">
+
+<span id="target" style="font:menu">Hello world</span>
+
+<script type="application/javascript"><![CDATA[
+  function is(condition, message) {
+    window.arguments[0].SimpleTest.is(condition, message);
+  }
+  function registerCleanupFunction(func) {
+    window.arguments[0].SimpleTest.registerCleanupFunction(func);
+  }
+
+  async function waitForFrame() {
+    return new Promise(resolve => {
+      requestAnimationFrame(resolve);
+    });
+  }
+
+  let windowUtils = window.windowUtils;
+  async function start() {
+    await waitForFrame();
+
+    const originalSystemFont = windowUtils.systemFont;
+    registerCleanupFunction(() => {
+      windowUtils.systemFont = originalSystemFont;
+    });
+
+    windowUtils.systemFont = 'Sans 11';
+    is(windowUtils.systemFont, 'Sans 11');
+
+    // Wait for two frames for the safety since the notification for system
+    // font changes is asynchronously processed.
+    await waitForFrame();
+    await waitForFrame();
+
+    const target = document.getElementById('target');
+    is(getComputedStyle(target).fontFamily, 'Sans');
+
+    windowUtils.systemFont = 'Serif 11';
+    is(windowUtils.systemFont, 'Serif 11');
+
+    await waitForFrame();
+    await waitForFrame();
+
+    is(getComputedStyle(target).fontFamily, 'Serif');
+
+    window.close();
+    window.arguments[0].SimpleTest.finish();
+  }
+]]></script>
+</window>
diff --git a/widget/tests/taskbar_previews.xhtml b/widget/tests/taskbar_previews.xhtml
new file mode 100644
index 0000000000..b220d5662b
--- /dev/null
+++ b/widget/tests/taskbar_previews.xhtml
@@ -0,0 +1,116 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Taskbar Previews Test"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+  onload="loaded();">
+
+  <title>Previews - yeah!</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script class="testbody" type="application/javascript">
+  <![CDATA[
+    let taskbar = Cc["@mozilla.org/windows-taskbar;1"].getService(Ci.nsIWinTaskbar);
+
+    function IsWin7OrHigher() {
+      try {
+        var ver = parseFloat(Services.sysinfo.getProperty("version"));
+        if (ver >= 6.1)
+          return true;
+      } catch (ex) { }
+      return false;
+    }
+    isnot(taskbar, null, "Taskbar service is defined");
+    is(taskbar.available, IsWin7OrHigher(), "Expected availability of taskbar");
+
+    SimpleTest.waitForExplicitFinish();
+
+    function stdPreviewSuite(p) {
+      p.visible = !p.visible;
+      p.visible = !p.visible;
+      p.visible = true;
+      p.invalidate();
+      p.visible = false;
+    }
+
+    function loaded()
+    {
+      if (!taskbar.available)
+        SimpleTest.finish();
+      let controller = {
+        width: 400,
+        height: 400,
+        thumbnailAspectRatio: 1.0,
+        get wrappedJSObject() { return this; }
+      }
+      // HACK from mconnor:
+      let win = Services.wm.getMostRecentWindow("navigator:browser");
+      let docShell = win.gBrowser.docShell;
+
+      let winPreview = taskbar.getTaskbarWindowPreview(docShell);
+      isnot(winPreview, null, "Window preview is not null");
+      winPreview.controller = controller;
+      let button = winPreview.getButton(0);
+      isnot(button, null, "Could get button at valid index");
+      try {
+        winPreview.getButton(-1);
+        ok(false, "Got button at negative index");
+      } catch (ex) {}
+      try {
+        winPreview.getButton(Ci.nsITaskbarWindowPreview.NUM_TOOLBAR_BUTTONS);
+        ok(false, "Got button at index that is too large");
+      } catch (ex) {}
+      button.image = null;
+      stdPreviewSuite(winPreview);
+      // Let's not perma-hide this window from the taskbar
+      winPreview.visible = true;
+
+      let tabP = taskbar.createTaskbarTabPreview(docShell, controller);
+      isnot(tabP, null, "Tab preview is not null");
+      is(tabP.controller.wrappedJSObject, controller, "Controllers match");
+      is(tabP.icon, null, "Default icon is null (windows default)");
+      tabP.icon = null;
+      tabP.move(null);
+      try {
+        tabP.move(tabP);
+        ok(false, "Moved a preview next to itself!");
+      } catch (ex) {}
+      stdPreviewSuite(tabP);
+
+      let tabP2 = taskbar.createTaskbarTabPreview(docShell, controller);
+      tabP.visible = true;
+      tabP2.visible = true;
+
+      isnot(tabP2, null, "2nd Tab preview is not null");
+      isnot(tabP,tabP2, "Tab previews are different");
+      tabP.active = true;
+      ok(tabP.active && !tabP2.active, "Only one tab is active (part 1)");
+      tabP2.active = true;
+      ok(!tabP.active && tabP2.active, "Only one tab is active (part 2)");
+      tabP.active = true;
+      ok(tabP.active && !tabP2.active, "Only one tab is active (part 3)");
+      tabP.active = false;
+      ok(!tabP.active && !tabP2.active, "Neither tab is active");
+      is(winPreview.active, false, "Window preview is not active");
+      tabP.active = true;
+      winPreview.active = true;
+      ok(winPreview.active && !tabP.active, "Tab preview takes activation from window");
+      tabP.active = true;
+      ok(tabP.active && !winPreview.active, "Tab preview takes activation from window");
+
+      tabP.visible = false;
+      tabP2.visible = false;
+
+      SimpleTest.finish();
+    }
+  ]]>
+  </script>
+
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+</window>
diff --git a/widget/tests/test_AltGr_key_events_in_web_content_on_windows.html b/widget/tests/test_AltGr_key_events_in_web_content_on_windows.html
new file mode 100644
index 0000000000..ff89f8fdad
--- /dev/null
+++ b/widget/tests/test_AltGr_key_events_in_web_content_on_windows.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Testing if AltGr keydown and keyup events are fired in web content on Windows</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script src="/tests/SimpleTest/NativeKeyCodes.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+<div id="display">
+  <input id="input">
+</div>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+
+<script class="testbody" type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+function checkEvent(aEvent, aExpectedEvents, aDescription) {
+  if (!aExpectedEvents.length) {
+    ok(false, `${aDescription}: no more expected events ` +
+              `(type: ${aEvent.type}, code: ${aEvent.code}, key: ${aEvent.key}, keyCode: ${aEvent.keyCode}`);
+  }
+  let expectedEvent = aExpectedEvents.shift();
+  for (let property in expectedEvent) {
+    is(aEvent[property], expectedEvent[property], `${aDescription}: ${property}`);
+  }
+}
+
+async function runAltGrKeyTest() {
+  return new Promise(resolve => {
+    let target = document.getElementById("input");
+    target.focus();
+
+    let events = [
+      { type: "keydown", code: "ControlLeft", key: "Control", keyCode: KeyboardEvent.DOM_VK_CONTROL },
+      { type: "keydown", code: "AltRight", key: "AltGraph", keyCode: KeyboardEvent.DOM_VK_ALT },
+      { type: "keyup", code: "ControlLeft", key: "Control", keyCode: KeyboardEvent.DOM_VK_CONTROL },
+      { type: "keyup", code: "AltRight", key: "AltGraph", keyCode: KeyboardEvent.DOM_VK_ALT },
+    ];
+    function handleEvent(aEvent) {
+      checkEvent(aEvent, events, "runAltGrKeyTest");
+      if (aEvent.type === "keyup" && aEvent.code === "AltRight") {
+        is(events.length, 0, "runAltGrKeyTest: all expected events are fired");
+        SimpleTest.executeSoon(() => {
+          target.removeEventListener("keydown", handleEvent);
+          target.removeEventListener("keypress", handleEvent);
+          target.removeEventListener("keyup", handleEvent);
+          resolve();
+        });
+      }
+    }
+    target.addEventListener("keydown", handleEvent);
+    target.addEventListener("keypress", handleEvent);
+    target.addEventListener("keyup", handleEvent);
+
+    synthesizeNativeKey(KEYBOARD_LAYOUT_SPANISH, WIN_VK_RMENU, {},
+                        "", "");
+  });
+}
+
+async function runEmulatingAltGrKeyTest() {
+  return new Promise(resolve => {
+    let target = document.getElementById("input");
+    target.focus();
+
+    let events = [
+      { type: "keydown", code: "ControlLeft", key: "Control", keyCode: KeyboardEvent.DOM_VK_CONTROL },
+      { type: "keydown", code: "AltLeft", key: "Alt", keyCode: KeyboardEvent.DOM_VK_ALT },
+      { type: "keyup", code: "AltLeft", key: "Alt", keyCode: KeyboardEvent.DOM_VK_ALT },
+      { type: "keyup", code: "ControlLeft", key: "Control", keyCode: KeyboardEvent.DOM_VK_CONTROL },
+    ];
+    function handleEvent(aEvent) {
+      checkEvent(aEvent, events, "runEmulatingAltGrKeyTest");
+      if (aEvent.type === "keyup" && aEvent.code === "ControlLeft") {
+        is(events.length, 0, "runAltGrKeyTest: all expected events are fired");
+        SimpleTest.executeSoon(() => {
+          target.removeEventListener("keydown", handleEvent);
+          target.removeEventListener("keypress", handleEvent);
+          target.removeEventListener("keyup", handleEvent);
+          resolve();
+        });
+      }
+    }
+    target.addEventListener("keydown", handleEvent);
+    target.addEventListener("keypress", handleEvent);
+    target.addEventListener("keyup", handleEvent);
+
+    synthesizeNativeKey(KEYBOARD_LAYOUT_SPANISH, WIN_VK_LMENU, { ctrlKey: true },
+                        "", "");
+  });
+}
+
+async function runTests() {
+  await runAltGrKeyTest();
+  await runEmulatingAltGrKeyTest();
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForFocus(runTests);
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/widget/tests/test_actionhint.html b/widget/tests/test_actionhint.html
new file mode 100644
index 0000000000..6ab2cf40de
--- /dev/null
+++ b/widget/tests/test_actionhint.html
@@ -0,0 +1,114 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Tests for action hint that is used by software keyboard</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/SpecialPowers.js"></script>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<div>
+<form><input type="text" id="a1"><input type="text" id="a2"><input type="submit"></form>
+<form><input type="search" id="b1"><input type="submit"></form>
+<form><input type="text" id="c1"></form>
+<form><input type="text" id="d1"><textarea></textarea><input type="submit"></form>
+<form><input type="text" id="e1"><input type="number"><input type="submit"></form>
+<form><input type="text" id="f1"><input type="date"><input type="submit"></form>
+<form><input type="text" id="g1"><input type="radio"><input type="submit"></form>
+<form><input type="text" id="h1"><input type="text" readonly><input type="submit"></form>
+<form><input type="text" id="i1"><input type="text" disabled><input type="submit"></form>
+<input type="text" id="j1"><input type="text"><input type="button">
+<form><input type="text" id="k1"><a href="#foo">foo</a><input type="text"><input type="submit"></form>
+<form>
+  <input id="l1" enterkeyhint="enter">
+  <input id="l2" enterkeyhint="DONE">
+  <input id="l3" enterkeyhint="go">
+  <input id="l4" enterkeyhint="Next">
+  <input id="l5" enterkeyhint="Previous">
+  <input id="l6" enterkeyhint="search">
+  <textarea id="l7" enterkeyhint="send"></textarea>
+  <input id="l8" type="number" enterkeyhint="previous">
+  <input id="l9" type="date" enterkeyhint="done">
+  <input id="l10" type="time" enterkeyhint="done">
+  <input id="l11" enterkeyhint="NONE">
+</form>
+</div>
+<pre id="test">
+<script class="testbody" type="application/javascript">
+add_task(async function setup() {
+  await new Promise(r => SimpleTest.waitForFocus(r));
+});
+
+add_task(async function basic() {
+  const tests = [
+    { id: "a1", hint: "maybenext", desc: "next element is type=text" },
+    { id: "a2", hint: "go", desc: "next element is type=submit" },
+    { id: "b1", hint: "search", desc: "current is type=search" },
+    { id: "c1", hint: "go", desc: "only this element" },
+    { id: "d1", hint: "maybenext", desc: "next element is textarea" },
+    { id: "e1", hint: "maybenext", desc: "next element is type=number" },
+    { id: "h1", hint: "go", desc: "next element is readonly" },
+    // XXX Feel free to change this result if you get some bugs reports
+    { id: "i1", hint: "go", desc: "next element is disabled" },
+    { id: "j1", hint: "", desc: "no form element" },
+    { id: "l1", hint: "enter", desc: "enterkeyhint=enter" },
+    { id: "l2", hint: "done", desc: "enterkeyhint=DONE" },
+    { id: "l3", hint: "go", desc: "enterkeyhint=go" },
+    { id: "l4", hint: "next", desc: "enterkeyhint=Next" },
+    { id: "l5", hint: "previous", desc: "enterkeyhint=Previous" },
+    { id: "l6", hint: "search", desc: "enterkeyhint=search" },
+    { id: "l7", hint: "send", desc: "enterkeyhint=send" },
+    { id: "l8", hint: "previous", desc: "type=number enterkeyhint=previous" },
+    // type=date is readonly content
+    { id: "l9", hint: "", desc: "type=date enterkeyhint=done" },
+    // type=time is readonly content
+    { id: "l10", hint: "", desc: "type=time enterkeyhint=done" },
+    // Since enterkeyhint is invalid, we infer action hint. So feel free to change this.
+    { id: "l11", hint: "go", desc: "enterkeyhint is invalid" },
+  ];
+
+  const todo_tests = [
+    { id: "f1", hint: "maybenext", desc: "next element is type=date" },
+    { id: "k1", hint: "", desc: "next is anchor link" },
+  ];
+
+
+  for (let test of tests) {
+    document.getElementById(test.id).focus();
+    is(SpecialPowers.DOMWindowUtils.focusedActionHint, test.hint, test.desc);
+  }
+
+  for (let test of todo_tests) {
+    document.getElementById(test.id).focus();
+    todo_is(SpecialPowers.DOMWindowUtils.focusedActionHint, test.hint, test.desc);
+  }
+});
+
+add_task(async function dynamicChange() {
+  let element = document.getElementById("l1");
+  element.focus();
+  is(SpecialPowers.DOMWindowUtils.focusedActionHint, "enter",
+     "Initial enterKeyHint");
+
+  element.setAttribute("enterkeyhint", "next");
+  is(SpecialPowers.DOMWindowUtils.focusedActionHint, "next",
+     "enterKeyHint in InputContext has to sync with enterkeyhint attribute");
+
+  element.enterKeyHint = "search";
+  is(SpecialPowers.DOMWindowUtils.focusedActionHint, "search",
+     "enterKeyHint in InputContext has to sync with enterKeyHint setter");
+
+  document.getElementById("l2").setAttribute("enterkeyhint", "send");
+  is(SpecialPowers.DOMWindowUtils.focusedActionHint, "search",
+     "enterKeyHint in InputContext keeps focused enterKeyHint value");
+
+  // Storing the original value may be safer.
+  element.enterkeyhint = "enter";
+  document.getElementById("l2").enterKeyHint = "done";
+});
+</script>
+</pre>
+</body>
+</html>
diff --git a/widget/tests/test_alwaysontop_focus.xhtml b/widget/tests/test_alwaysontop_focus.xhtml
new file mode 100644
index 0000000000..b9cc3ee33c
--- /dev/null
+++ b/widget/tests/test_alwaysontop_focus.xhtml
@@ -0,0 +1,38 @@
+<!DOCTYPE HTML>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+  <meta charset="utf-8" />
+  <title>Test that alwaysontop windows do not pull focus when opened.</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+  <script><![CDATA[
+    add_task(async function testAlwaysOnTop() {
+      let topWin = window.docShell.rootTreeItem.domWindow;
+      await SimpleTest.promiseFocus(topWin);
+      is(Services.focus.activeWindow, topWin, "Top level window is focused");
+
+      let newWin = Services.ww.openWindow(
+        null,
+        "about:blank",
+        null,
+        "chrome,alwaysontop,width=300,height=300",
+        null
+      );
+      await new Promise(resolve => {
+        newWin.addEventListener("load", resolve, { once: true });
+      });
+
+      // Wait one tick of the event loop to give the window a chance to focus.
+      await new Promise(resolve => { SimpleTest.executeSoon(resolve); });
+
+      is(Services.focus.activeWindow, topWin, "Top level window is still focused");
+      newWin.close();
+    });
+  ]]></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+</body>
+</html>
diff --git a/widget/tests/test_assign_event_data.html b/widget/tests/test_assign_event_data.html
new file mode 100644
index 0000000000..1da9bb535f
--- /dev/null
+++ b/widget/tests/test_assign_event_data.html
@@ -0,0 +1,708 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Testing ns*Event::Assign*EventData()</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script src="/tests/SimpleTest/NativeKeyCodes.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+  <style>
+    #a {
+      background-color: transparent;
+      transition: background-color 0.1s linear;
+    }
+    #a:focus {
+      background-color: red;
+    }
+    .slidin {
+      border: green 1px solid;
+      width: 10px;
+      height: 10px;
+      animation-name: slidein;
+      animation-duration: 1s;
+    }
+    @keyframes slidein {
+      from {
+        margin-left: 100%;
+      }
+      to {
+        margin-left: 0;
+      }
+    }
+    #pointer-target {
+      border: 1px dashed red;
+      background: yellow;
+      margin: 0px 10px;
+      padding: 0px 10px;
+    }
+    #scrollable-div {
+      background: green;
+      overflow: auto;
+      width: 30px;
+      height: 30px;
+    }
+    #scrolled-div {
+      background: magenta;
+      width: 10px;
+      height: 10px;
+    }
+    #form {
+      background: silver;
+      padding: 0px 10px;
+    }
+    #animated-div {
+      background: cyan;
+      padding: 0px 10px;
+    }
+  </style>
+</head>
+<body>
+<div id="display">
+  <input id="input-text">
+  <button id="button">button</button>
+  <a id="a" href="about:blank">hyper link</a>
+  <span id="pointer-target">span</span>
+  <div id="scrollable-div"><div id="scrolled-div"></div></div>
+  <form id="form">form</form>
+  <div id="animated-div">&nbsp;</div>
+</div>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+
+<script class="testbody" type="application/javascript">
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.expectAssertions(0, 34);
+
+const kIsMac = (navigator.platform.indexOf("Mac") == 0);
+const kIsWin = (navigator.platform.indexOf("Win") == 0);
+
+var gDescription = "";
+var gEvent = null;
+var gCopiedEvent = [];
+var gCallback = null;
+var gCallPreventDefault = false;
+
+function onEvent(aEvent) {
+  if (gCallPreventDefault) {
+    aEvent.preventDefault();
+  }
+  ok(gEvent === null, gDescription + `: We should receive only one event to check per test: already got: ${gEvent ? gEvent.type : "null"}, got: ${aEvent.type}`);
+  gEvent = aEvent;
+  for (var attr in aEvent) {
+    if (!attr.match(/^[A-Z0-9_]+$/) && // ignore const attributes
+        attr != "multipleActionsPrevented" && // multipleActionsPrevented isn't defined in any DOM event specs.
+        typeof(aEvent[attr]) != "function") {
+      gCopiedEvent.push({ name: attr, value: aEvent[attr]});
+    }
+  }
+  setTimeout(gCallback, 0);
+}
+
+function observeKeyUpOnContent(aKeyCode, aCallback) {
+  document.addEventListener("keyup", function keyUp(ev) {
+    if (ev.keyCode == aKeyCode) {
+      document.removeEventListener("keyup", keyUp);
+      SimpleTest.executeSoon(aCallback);
+    }
+  });
+}
+
+const kTests = [
+  { description: "InternalScrollPortEvent (overflow, vertical)",
+    targetID: "scrollable-div", eventType: "overflow",
+    dispatchEvent() {
+      document.getElementById("scrolled-div").style.height = "500px";
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalScrollPortEvent (overflow, horizontal)",
+    targetID: "scrollable-div", eventType: "overflow",
+    dispatchEvent() {
+      document.getElementById("scrolled-div").style.width = "500px";
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalScrollAreaEvent (MozScrolledAreaChanged, spreading)",
+    target() { return document; }, eventType: "MozScrolledAreaChanged",
+    dispatchEvent() {
+      document.getElementById("scrollable-div").style.width = "50000px";
+      document.getElementById("scrollable-div").style.height = "50000px";
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalScrollAreaEvent (MozScrolledAreaChanged, shrinking)",
+    target() { return document; }, eventType: "MozScrolledAreaChanged",
+    dispatchEvent() {
+      document.getElementById("scrollable-div").style.width = "30px";
+      document.getElementById("scrollable-div").style.height = "30px";
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetKeyboardEvent (keydown of 'a' key without modifiers)",
+    targetID: "input-text", eventType: "keydown",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, kIsWin ? WIN_VK_A : MAC_VK_ANSI_A,
+                          {}, "a", "a");
+      observeKeyUpOnContent(KeyboardEvent.DOM_VK_A, runNextTest);
+      return true;
+    },
+    canRun() {
+      return (kIsMac || kIsWin);
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetKeyboardEvent (keyup of 'a' key without modifiers)",
+    targetID: "input-text", eventType: "keydown",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, kIsWin ? WIN_VK_A : MAC_VK_ANSI_A,
+                          {}, "a", "a");
+      observeKeyUpOnContent(KeyboardEvent.DOM_VK_A, runNextTest);
+      return true;
+    },
+    canRun() {
+      return (kIsMac || kIsWin);
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetKeyboardEvent (keypress of 'b' key with Shift)",
+    targetID: "input-text", eventType: "keypress",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, kIsWin ? WIN_VK_B : MAC_VK_ANSI_B,
+                          { shiftKey: true }, "B", "B");
+
+      // On Windows, synthesizeNativeKey will also fire keyup for shiftKey.
+      // We have to wait for it to prevent the key event break the next test case.
+      let waitKeyCode = _EU_isWin(window) ? KeyboardEvent.DOM_VK_SHIFT :
+                                            KeyboardEvent.DOM_VK_B;
+      observeKeyUpOnContent(waitKeyCode, runNextTest);
+      return true;
+    },
+    canRun() {
+      return (kIsMac || kIsWin);
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetKeyboardEvent (keyup during composition)",
+    targetID: "input-text", eventType: "keyup",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeCompositionChange({ "composition":
+        { "string": "\u306D",
+          "clauses":
+          [
+            { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          ],
+        },
+        "caret": { "start": 1, "length": 0 },
+        "key": { key: "a" },
+      });
+      synthesizeComposition({ type: "compositioncommitasis", key: {} });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetKeyboardEvent (keydown during composition)",
+    targetID: "input-text", eventType: "keydown",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeCompositionChange({ "composition":
+        { "string": "\u306D",
+          "clauses":
+          [
+            { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          ],
+        },
+        "caret": { "start": 1, "length": 0 },
+        "key": {},
+      });
+      synthesizeComposition({ type: "compositioncommitasis",
+        key: { key: "KEY_Enter" } });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetMouseEvent (mousedown of left button without modifier)",
+    targetID: "button", eventType: "mousedown",
+    dispatchEvent() {
+      synthesizeMouseAtCenter(document.getElementById(this.targetID),
+                              { button: 0 });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetMouseEvent (click of middle button with Shift)",
+    targetID: "button", eventType: "auxclick",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeMouseAtCenter(document.getElementById(this.targetID),
+                              { button: 1, shiftKey: true, pressure: 0.5 });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetMouseEvent (mouseup of right button with Alt)",
+    targetID: "button", eventType: "mouseup",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeMouseAtCenter(document.getElementById(this.targetID),
+                              { button: 2, altKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetDragEvent",
+    targetID: "input-text", eventType: "dragstart",
+    dispatchEvent() {
+
+    },
+    canRun() {
+      todo(false, "WidgetDragEvent isn't tested");
+      return false;
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetCompositionEvent (compositionupdate)",
+    targetID: "input-text", eventType: "compositionupdate",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeComposition({ type: "compositioncommit", data: "\u30E9\u30FC\u30E1\u30F3", key: { key: "KEY_Enter" } });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "InternalEditorInputEvent (input at key input)",
+    targetID: "input-text", eventType: "input",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, kIsWin ? WIN_VK_B : MAC_VK_ANSI_B,
+                          { shiftKey: true }, "B", "B");
+      observeKeyUpOnContent(KeyboardEvent.DOM_VK_B, runNextTest);
+      return true;
+    },
+    canRun() {
+      return (kIsMac || kIsWin);
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalEditorInputEvent (input at composing)",
+    targetID: "input-text", eventType: "input",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      document.getElementById(this.targetID).focus();
+      synthesizeCompositionChange({ "composition":
+        { "string": "\u30E9\u30FC\u30E1\u30F3",
+          "clauses":
+          [
+            { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          ],
+        },
+        "caret": { "start": 4, "length": 0 },
+        "key": { key: "y" },
+      });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "InternalEditorInputEvent (input at committing)",
+    targetID: "input-text", eventType: "input",
+    dispatchEvent() {
+      synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetMouseScrollEvent (DOMMouseScroll, vertical)",
+    targetID: "input-text", eventType: "DOMMouseScroll",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 3, 4,
+                      { deltaY: 30, lineOrPageDeltaY: 2 });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetMouseScrollEvent (DOMMouseScroll, horizontal)",
+    targetID: "input-text", eventType: "DOMMouseScroll",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 4, 5,
+                      { deltaX: 30, lineOrPageDeltaX: 2, shiftKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetMouseScrollEvent (MozMousePixelScroll, vertical)",
+    targetID: "input-text", eventType: "MozMousePixelScroll",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 3, 4,
+                      { deltaY: 20, lineOrPageDeltaY: 1, altKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetMouseScrollEvent (MozMousePixelScroll, horizontal)",
+    targetID: "input-text", eventType: "MozMousePixelScroll",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 4, 5,
+                      { deltaX: 20, lineOrPageDeltaX: 1, ctrlKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetWheelEvent (wheel, vertical)",
+    targetID: "input-text", eventType: "wheel",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 3, 4,
+                      { deltaY: 20, lineOrPageDeltaY: 1, altKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetWheelEvent (wheel, horizontal)",
+    targetID: "input-text", eventType: "wheel",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 4, 5,
+                      { deltaX: 20, lineOrPageDeltaX: 1, ctrlKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetWheelEvent (wheel, both)",
+    targetID: "input-text", eventType: "wheel",
+    dispatchEvent() {
+      document.getElementById(this.targetID).value = "";
+      synthesizeWheel(document.getElementById(this.targetID), 4, 5,
+                      { deltaX: 20, deltaY: 10,
+                        lineOrPageDeltaX: 1, lineOrPageDeltaY: 1 });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetTouchEvent (touchstart)",
+    target() { return document; }, eventType: "touchstart",
+    dispatchEvent() {
+      synthesizeTouchAtPoint(1, 2, { id: 10, rx: 4, ry: 3, angle: 0, force: 1, shiftKey: true});
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetTouchEvent (touchend)",
+    target() { return document; }, eventType: "touchend",
+    dispatchEvent() {
+      synthesizeTouchAtPoint(4, 6, { id: 5, rx: 1, ry: 2, angle: 0.5, force: 0.8, ctrlKey: true});
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "InternalFormEvent (reset)",
+    targetID: "form", eventType: "reset",
+    dispatchEvent() {
+      document.getElementById("form").reset();
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "WidgetCommandEvent",
+    targetID: "input-text", eventType: "",
+    dispatchEvent() {
+
+    },
+    canRun() {
+      todo(false, "WidgetCommandEvent isn't tested");
+      return false;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalClipboardEvent (copy)",
+    targetID: "input-text", eventType: "copy",
+    dispatchEvent() {
+      document.getElementById("input-text").value = "go to clipboard!";
+      document.getElementById("input-text").focus();
+      document.getElementById("input-text").select();
+      synthesizeKey("c", { accelKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [ ],
+  },
+  { description: "InternalUIEvent (DOMActivate)",
+    targetID: "button", eventType: "DOMActivate",
+    dispatchEvent() {
+      synthesizeMouseAtCenter(document.getElementById(this.targetID),
+                              { button: 0, shiftKey: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalFocusEvent (focus)",
+    targetID: "input-text", eventType: "focus",
+    dispatchEvent() {
+      document.getElementById(this.targetID).focus();
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalFocusEvent (blur)",
+    targetID: "input-text", eventType: "blur",
+    dispatchEvent() {
+      document.getElementById(this.targetID).blur();
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "WidgetSimpleGestureEvent",
+    targetID: "", eventType: "",
+    dispatchEvent() {
+
+    },
+    canRun() {
+      // Simple gesture event may be handled before it comes content.
+      // So, we cannot test it in this test.
+      todo(false, "WidgetSimpleGestureEvent isn't tested");
+      return false;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalTransitionEvent (transitionend)",
+    targetID: "a", eventType: "transitionend",
+    dispatchEvent() {
+      document.getElementById(this.targetID).focus();
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalAnimationEvent (animationend)",
+    targetID: "animated-div", eventType: "animationend",
+    dispatchEvent() {
+      document.getElementById(this.targetID).className = "slidin";
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalMutationEvent (DOMAttrModified)",
+    targetID: "animated-div", eventType: "DOMAttrModified",
+    dispatchEvent() {
+      document.getElementById(this.targetID).setAttribute("x-data", "foo");
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalMutationEvent (DOMNodeInserted)",
+    targetID: "animated-div", eventType: "DOMNodeInserted",
+    dispatchEvent() {
+      var div = document.createElement("div");
+      div.id = "inserted-div";
+      document.getElementById("animated-div").appendChild(div);
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "InternalMutationEvent (DOMNodeRemoved)",
+    targetID: "animated-div", eventType: "DOMNodeRemoved",
+    dispatchEvent() {
+      document.getElementById("animated-div").removeChild(document.getElementById("inserted-div"));
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "PointerEvent (pointerdown)",
+    targetID: "pointer-target", eventType: "mousedown",
+    dispatchEvent() {
+      var elem = document.getElementById(this.targetID);
+      var rect = elem.getBoundingClientRect();
+      synthesizeMouse(elem, rect.width / 2, rect.height / 2,
+                      { type: this.eventType, button: 1, clickCount: 1, inputSource: 2, pressure: 0.25, isPrimary: true });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+  { description: "PointerEvent (pointerup)",
+    targetID: "pointer-target", eventType: "mouseup",
+    dispatchEvent() {
+      var elem = document.getElementById(this.targetID);
+      var rect = elem.getBoundingClientRect();
+      synthesizeMouse(elem, rect.width / 2, rect.height / 2,
+                      { type: this.eventType, button: -1, ctrlKey: true, shiftKey: true, altKey: true, isSynthesized: false });
+    },
+    canRun() {
+      return true;
+    },
+    todoMismatch: [],
+  },
+];
+
+function doTest(aTest) {
+  if (!aTest.canRun()) {
+    SimpleTest.executeSoon(runNextTest);
+    return;
+  }
+  gEvent = null;
+  gCopiedEvent = [];
+  gDescription = aTest.description + " (gCallPreventDefault=" + gCallPreventDefault + ")";
+  var target = aTest.target ? aTest.target() : document.getElementById(aTest.targetID);
+  target.addEventListener(aTest.eventType, onEvent, true);
+  gCallback = function() {
+    target.removeEventListener(aTest.eventType, onEvent, true);
+    ok(gEvent !== null, gDescription + ": failed to get duplicated event");
+    ok(!!gCopiedEvent.length, gDescription + ": count of attribute of the event must be larger than 0");
+    for (var i = 0; i < gCopiedEvent.length; ++i) {
+      var name = gCopiedEvent[i].name;
+      if (name == "rangeOffset") {
+        todo(false, gDescription + ": " + name + " attribute value is never reset (" + gEvent[name] + ")");
+      } else if (name == "eventPhase") {
+        is(gEvent[name], 0, gDescription + ": mismatch with fixed value (" + name + ")");
+      } else if (name == "rangeParent" || name == "currentTarget") {
+        is(gEvent[name], null, gDescription + ": mismatch with fixed value (" + name + ")");
+      } else if (aTest.todoMismatch.includes(name)) {
+        todo_is(gEvent[name], gCopiedEvent[i].value, gDescription + ": mismatch (" + name + ")");
+      } else if (name == "offsetX" || name == "offsetY") {
+        // do nothing; these are defined to return different values during event dispatch
+        // vs not during event dispatch
+      } else {
+        is(gEvent[name], gCopiedEvent[i].value, gDescription + ": mismatch (" + name + ")");
+      }
+    }
+    if (!testWillCallRunNextTest) {
+      runNextTest();
+    }
+  };
+  var testWillCallRunNextTest = aTest.dispatchEvent();
+}
+
+var gIndex = -1;
+function runNextTest() {
+  if (++gIndex == kTests.length) {
+    if (gCallPreventDefault) {
+      finish();
+      return;
+    }
+    // Test with a call of preventDefault() of the events.
+    gCallPreventDefault = true;
+    gIndex = -1;
+    // Restoring the initial state of all elements.
+    document.getElementById("scrollable-div").style.height = "30px";
+    document.getElementById("scrollable-div").style.width = "30px";
+    document.getElementById("scrolled-div").style.height = "10px";
+    document.getElementById("scrolled-div").style.width = "10px";
+    document.getElementById("input-text").value = "";
+    document.getElementById("animated-div").className = "";
+    document.getElementById("animated-div").removeAttribute("x-data");
+    if (document.activeElement) {
+      document.activeElement.blur();
+    }
+    window.requestAnimationFrame(function() {
+      setTimeout(runNextTest, 0);
+    });
+    return;
+  }
+  doTest(kTests[gIndex]);
+}
+
+function init() {
+  SpecialPowers.pushPrefEnv({"set": [["middlemouse.contentLoadURL", false],
+                                    ["middlemouse.paste", false],
+                                    ["general.autoScroll", false],
+                                    ["mousewheel.default.action", 0],
+                                    ["mousewheel.default.action.override_x", -1],
+                                    ["mousewheel.with_shift.action", 0],
+                                    ["mousewheel.with_shift.action.override_x", -1],
+                                    ["mousewheel.with_control.action", 0],
+                                    ["mousewheel.with_control.action.override_x", -1],
+                                    ["mousewheel.with_alt.action", 0],
+                                    ["mousewheel.with_alt.action.override_x", -1],
+                                    ["mousewheel.with_meta.action", 0],
+                                    ["mousewheel.with_meta.action.override_x", -1]]}, runNextTest);
+}
+
+function finish() {
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForFocus(init);
+
+</script>
+</body>
diff --git a/widget/tests/test_autocapitalize.html b/widget/tests/test_autocapitalize.html
new file mode 100644
index 0000000000..de628d1190
--- /dev/null
+++ b/widget/tests/test_autocapitalize.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Tests for autocapitalize that is used by software keyboard</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/SpecialPowers.js"></script>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+
+<div>
+<input type="text" id="a1"><br>
+<input type="text" id="a2" autocapitalize="characters"><br>
+<input type="text" id="a3" autocapitalize="sentences"><br>
+<input type="text" id="a4" autocapitalize="words"><br>
+<input type="text" id="a5" autocapitalize="off"><br>
+<input type="text" id="a6" autocapitalize="on"><br>
+<input type="url" id="a7" autocapitalize="on"><br>
+<input type="email" id="a8" autocapitalize="on"><br>
+<input type="password" id="a9" autocapitalize="on"><br>
+<textarea id="b1" autocapitalize="characters"></textarea><br>
+<div contenteditable id="c1" autocapitalize="sentences"></div><br>
+<form><input type="text" id="d1" autocapitalize="words"></form><br>
+<form autocapitalize="on"><input type="text" id="d2"></form><br>
+<form autocapitalize="off"><input type="text" id="d3" autocapitalize="on"></form><br>
+</div>
+
+<pre id="test">
+<script class="testbody" type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+SimpleTest.waitForFocus(async () => {
+  const tests = [
+    { id: "a1", autocapitalize: "", desc: "input without autocapitalize" },
+    { id: "a2", autocapitalize: "characters", desc: "input with autocapitalize=characters" },
+    { id: "a3", autocapitalize: "sentences", desc: "input with autocapitalize=sentences" },
+    { id: "a4", autocapitalize: "words", desc: "input with autocapitalize=words" },
+    { id: "a5", autocapitalize: "none", desc: "input with autocapitalize=off" },
+    { id: "a6", autocapitalize: "sentences", desc: "input with autocapitalize=on" },
+    { id: "a7", autocapitalize: "", desc: "input with type=url and autocapitalize=on" },
+    { id: "a8", autocapitalize: "", desc: "input with type=email and autocapitalize=on" },
+    { id: "a9", autocapitalize: "", desc: "input with type=password and autocapitalize=on" },
+    { id: "b1", autocapitalize: "characters", desc: "textarea with autocapitalize=characters" },
+    { id: "c1", autocapitalize: "sentences", desc: "contenteditable with autocapitalize=sentences" },
+    { id: "d1", autocapitalize: "words", desc: "input with autocapitalize=words in form" },
+    { id: "d2", autocapitalize: "sentences", desc: "input in form with autocapitalize=on" },
+    { id: "d3", autocapitalize: "sentences", desc: "input with autocapitalize=on in form" },
+  ];
+
+  for (let test of tests) {
+    document.getElementById(test.id).focus();
+    is(SpecialPowers.DOMWindowUtils.focusedAutocapitalize, test.autocapitalize, test.desc);
+  }
+
+  SimpleTest.finish();
+});
+</script>
+</pre>
+</body>
+</html>
diff --git a/widget/tests/test_bug1123480.xhtml b/widget/tests/test_bug1123480.xhtml
new file mode 100644
index 0000000000..18a40202fd
--- /dev/null
+++ b/widget/tests/test_bug1123480.xhtml
@@ -0,0 +1,155 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1123480
+-->
+<window title="Mozilla Bug 1123480"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="RunTest();">
+  <title>nsTransferable PBM Overflow Selection Test</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <script type="application/javascript">
+  <![CDATA[
+  // Create over 1 MB of sample garbage text. JavaScript strings are represented by
+  // UTF16 strings, so the size is twice as much as the actual string length.
+  // This value is chosen such that the size of the memory for the string exceeds
+  // the kLargeDatasetSize threshold in nsTransferable.h.
+  // It is also not a round number to reduce the odds of having an accidental
+  // collisions with another file (since the test below looks at the file size
+  // to identify the file).
+  var Ipsum = "0123456789".repeat(1234321);
+  var IpsumByteLength = Ipsum.length * 2;
+  var SHORT_STRING_NO_CACHE = "short string that will never be cached to the disk";
+
+  function isWindows() {
+    const {AppConstants} = ChromeUtils.importESModule(
+      "resource://gre/modules/AppConstants.sys.mjs"
+    );
+    return AppConstants.platform === 'win';
+  }
+
+  // Get a list of open file descriptors that refer to a file with the same size as
+  // the expected data (and assume that any mutations in file descriptor counts
+  // are caused by our test).
+  function getClipboardCacheFDCount() {
+    var dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
+    if (isWindows()) {
+      // On Windows, nsAnonymousTemporaryFile does not immediately delete the file.
+      // Instead, the Windows-specific FILE_FLAG_DELETE_ON_CLOSE flag is used,
+      // which means that the file is deleted when the last handle is closed.
+      // Apparently, this flag is unreliable (e.g. when the application crashes),
+      // so nsAnonymousTemporaryFile stores the temporary files in a subdirectory,
+      // which is cleaned up some time after start-up.
+
+      // This is just a test, and during the test we deterministically close the
+      // handles, so if FILE_FLAG_DELETE_ON_CLOSE does the thing it promises, the
+      // file is actually removed when the handle is closed.
+
+      // Path from nsAnonymousTemporaryFile.cpp, GetTempDir.
+      dir.initWithPath(PathUtils.join(PathUtils.tempDir, "mozilla-temp-files"));
+    } else {
+      dir.initWithPath("/dev/fd");
+    }
+    var count = 0;
+    for (var de = dir.directoryEntries; de.hasMoreElements(); ) {
+      var fdFile = de.nextFile;
+      var fileSize;
+      try {
+        fileSize = fdFile.fileSize;
+      } catch (e) {
+        // This can happen on macOS.
+        continue;
+      }
+      if (fileSize === IpsumByteLength) {
+        // Assume that the file was created by us if the size matches.
+        ++count;
+      }
+    }
+    return count;
+  }
+
+  async function RunTest() {
+    SimpleTest.waitForExplicitFinish();
+    const gClipboardHelper = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper);
+
+    // Sanitize environment
+    gClipboardHelper.copyString(SHORT_STRING_NO_CACHE);
+    await new Promise(resolve => setTimeout(resolve, 0));
+
+    var initialFdCount = getClipboardCacheFDCount();
+
+    // Overflow a nsTransferable region by using the clipboard helper
+    gClipboardHelper.copyString(Ipsum);
+
+    // gClipboardHelper.copyString also puts the data on the selection
+    // clipboard if the platform supports it.
+    var expectedFdDelta = Services.clipboard.isClipboardTypeSupported(Services.clipboard.kSelectionClipboard) ? 2 : 1;
+    // Undefined private browsing mode should cache to disk
+    is(getClipboardCacheFDCount(), initialFdCount + expectedFdDelta, "should cache to disk when PBM is undefined");
+
+    // Sanitize environment again.
+    gClipboardHelper.copyString(SHORT_STRING_NO_CACHE);
+    await new Promise(resolve => setTimeout(resolve, 0));
+
+    is(getClipboardCacheFDCount(), initialFdCount, "should have cleared the clipboard data");
+
+    // Repeat procedure of plain text selection with private browsing
+    // disabled and enabled
+    const {PrivateBrowsingUtils} = ChromeUtils.importESModule(
+      "resource://gre/modules/PrivateBrowsingUtils.sys.mjs"
+    );
+    for (let private of [false, true]) {
+      var win = window.browsingContext.topChromeWindow.open("about:blank", "_blank", "chrome, width=500, height=200" + (private ? ", private" : ""));
+      ok(win, private ? "should open private window" : "should open non-private window");
+      is(PrivateBrowsingUtils.isContentWindowPrivate(win), private, "used correct window context");
+
+      // Select plaintext in private/non-private channel
+      const nsTransferable = Components.Constructor("@mozilla.org/widget/transferable;1", "nsITransferable");
+      const nsSupportsString = Components.Constructor("@mozilla.org/supports-string;1", "nsISupportsString");
+      var Loadctx = PrivateBrowsingUtils.privacyContextFromWindow(win);
+      var Transfer = nsTransferable();
+      var Suppstr = nsSupportsString();
+      Suppstr.data = Ipsum;
+      Transfer.init(Loadctx);
+      Transfer.addDataFlavor("text/plain");
+      Transfer.setTransferData("text/plain", Suppstr);
+
+      // Enabled private browsing mode should not cache any selection to disk; disabled should
+      if (private) {
+        is(getClipboardCacheFDCount(), initialFdCount, "did not violate private browsing mode");
+      } else {
+        is(getClipboardCacheFDCount(), initialFdCount + 1, "should save memory by caching non-private clipboard data to disk");
+      }
+
+      // Share the transferable with the system.
+      Services.clipboard.setData(Transfer, null, Services.clipboard.kGlobalClipboard);
+      if (private) {
+        is(getClipboardCacheFDCount(), initialFdCount, "did not violate private browsing mode");
+      } else {
+        is(getClipboardCacheFDCount(), initialFdCount + 1, "should save memory by caching non-private clipboard data to disk");
+      }
+
+      // Sanitize the environment.
+      Suppstr = nsSupportsString();
+      Suppstr.data = SHORT_STRING_NO_CACHE;
+      Transfer.setTransferData("text/plain", Suppstr);
+      await new Promise(resolve => setTimeout(resolve, 0));
+      is(getClipboardCacheFDCount(), initialFdCount, "should drop the cache file, if any.");
+
+      Services.clipboard.setData(Transfer, null, Services.clipboard.kGlobalClipboard);
+      is(getClipboardCacheFDCount(), initialFdCount, "should postsanitize the environment");
+    }
+
+    SimpleTest.finish();
+  }
+  ]]>
+  </script>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1123480"
+     target="_blank">Mozilla Bug 1123480</a>
+  </body>
+</window>
diff --git a/widget/tests/test_bug343416.xhtml b/widget/tests/test_bug343416.xhtml
new file mode 100644
index 0000000000..bf4dbbb9b4
--- /dev/null
+++ b/widget/tests/test_bug343416.xhtml
@@ -0,0 +1,191 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=343416
+-->
+<window title="Mozilla Bug 343416"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=343416">Mozilla Bug 343416</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+/** Test for Bug 343416 */
+SimpleTest.waitForExplicitFinish();
+
+// Observer:
+var idleObserver =
+{
+    QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
+    observe: function _observe(subject, topic, data)
+    {
+        if (topic != "idle")
+            return;
+
+//        var diff = Math.abs(data - newIdleSeconds * 1000);
+//        ok (diff < 5000, "The idle time should have increased by roughly 6 seconds, " +
+//                         "as that's when we told this listener to fire.");
+//        if (diff >= 5000)
+//            alert(data + "  " + newIdleSeconds);
+
+        // Attempt to get to the nsIUserIdleService        
+        var subjectOK = false;
+        try {
+            var idleService = subject.QueryInterface(nsIUserIdleService);
+            subjectOK = true;
+        }
+        catch (ex)
+        {}
+        ok(subjectOK, "The subject of the notification should be the " +
+                      "nsIUserIdleService.");
+
+        // Attempt to remove ourselves.
+        var removedObserver = false;
+        try {
+            idleService.removeIdleObserver(this, newIdleSeconds);
+            removedObserver = true;
+        }
+        catch (ex)
+        {}
+        ok(removedObserver, "We should be able to remove our observer here.");
+        finishedListenerOK = true;
+        if (finishedTimeoutOK)
+        {
+            clearTimeout(testBailout);
+            finishThisTest();
+        }
+    }
+};
+
+
+const nsIUserIdleService = Ci.nsIUserIdleService;
+const nsIISCID = "@mozilla.org/widget/useridleservice;1";
+var idleService = null;
+try
+{
+    idleService = Cc[nsIISCID].getService(nsIUserIdleService);
+}
+catch (ex)
+{}
+
+ok(idleService, "nsIUserIdleService should exist and be implemented on all tier 1 platforms.");
+
+var idleTime = null;
+var gotIdleTime = false;
+try
+{
+    idleTime = idleService.idleTime;
+    gotIdleTime = true;
+}
+catch (ex)
+{}
+
+ok (gotIdleTime, "Getting the idle time should not fail " +
+                 "in normal circumstances on any tier 1 platform.");
+
+// Now we set up a timeout to sanity-test the idleTime after 5 seconds
+setTimeout(testIdleTime, 5000);
+var startTimeStamp = Date.now();
+
+// Now we add the listener:
+var newIdleSeconds = Math.floor(idleTime / 1000) + 6;
+var addedObserver = false;
+try
+{
+    idleService.addIdleObserver(idleObserver, newIdleSeconds);
+    addedObserver = true;
+}
+catch (ex)
+{}
+
+ok(addedObserver, "The nsIUserIdleService should allow us to add an observer.");
+
+addedObserver = false;
+try
+{
+    idleService.addIdleObserver(idleObserver, newIdleSeconds);
+    addedObserver = true;
+}
+catch (ex)
+{}
+
+ok(addedObserver, "The nsIUserIdleService should allow us to add the same observer again.");
+
+var removedObserver = false;
+try
+{
+    idleService.removeIdleObserver(idleObserver, newIdleSeconds);
+    removedObserver = true;
+}
+catch (ex)
+{}
+
+ok(removedObserver, "The nsIUserIdleService should allow us to remove the observer just once.");
+
+function testIdleTime()
+{
+    /* eslint-disable-next-line no-shadow */
+    var gotIdleTime = false
+    try
+    {
+        var newIdleTime = idleService.idleTime;
+    gotIdleTime = true
+    }
+    catch (ex)
+    {}
+    ok(gotIdleTime, "Getting the idle time should not fail " +
+                    "in normal circumstances on any tier 1 platform.");
+    // Get the time difference, remove the approx. 5 seconds that we've waited,
+    // should be very close to 0 left.
+    var timeDiff = Math.abs((newIdleTime - idleTime) -
+                            (Date.now() - startTimeStamp));
+
+    // 1.5 second leniency.
+    ok(timeDiff < 1500, "The idle time should have increased by roughly the " +
+                        "amount of time it took for the timeout to fire. " +
+                        "You didn't touch the mouse or keyboard during the " +
+                        "test did you?");
+    finishedTimeoutOK = true;
+}
+
+// make sure we still exit when the listener and/or setTimeout don't fire:
+var testBailout = setTimeout(finishThisTest, 12000);
+var finishedTimeoutOK = false, finishedListenerOK = false;
+function finishThisTest()
+{
+    ok(finishedTimeoutOK, "We set a timeout and it should have fired by now.");
+    ok(finishedListenerOK, "We added a listener and it should have been called by now.");
+    if (!finishedListenerOK)
+    {
+        var removedListener = false;
+        try
+        {
+            idleService.removeIdleObserver(idleObserver, newIdleSeconds);
+            removedListener = true;
+        }
+        catch (ex)
+        {}
+    
+        ok(removedListener, "We added a listener and we should be able to remove it.");
+    }
+    // Done:
+    SimpleTest.finish();
+}
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug428405.xhtml b/widget/tests/test_bug428405.xhtml
new file mode 100644
index 0000000000..25d796ab7b
--- /dev/null
+++ b/widget/tests/test_bug428405.xhtml
@@ -0,0 +1,168 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window id="window1" title="Test Bug 428405"
+  onload="setGlobals(); loadFirstTab();"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js"/>
+
+  <tabbox id="tabbox" style="-moz-box-flex: 100">
+    <tabs>
+      <tab label="Tab 1"/>
+      <tab label="Tab 2"/>
+    </tabs>
+    <tabpanels style="-moz-box-flex: 100">
+      <browser onload="configureFirstTab();" id="tab1browser" style="-moz-box-flex: 100"/>
+      <browser onload="configureSecondTab();" id="tab2browser" style="-moz-box-flex: 100"/>
+    </tabpanels>
+  </tabbox>
+
+  <script type="application/javascript"><![CDATA[
+    const {BrowserTestUtils} = ChromeUtils.importESModule(
+      "resource://testing-common/BrowserTestUtils.sys.mjs"
+    );
+
+    SimpleTest.waitForExplicitFinish();
+
+    var gCmdOptYReceived = false;
+
+    // Look for a cmd-opt-y event.
+    function onKeyPress(aEvent) {
+      gCmdOptYReceived = false;
+      if (String.fromCharCode(aEvent.charCode) != 'y')
+        return;
+      if (aEvent.ctrlKey || aEvent.shiftKey || !aEvent.metaKey || !aEvent.altKey)
+        return;
+      gCmdOptYReceived = true;
+    }
+
+    function setGlobals() {
+      let chromeWindow = Services.wm.getMostRecentWindow("navigator:browser");
+      // For some reason, a global <key> element's oncommand handler only gets
+      // invoked if the focus is outside both of the <browser> elements
+      // (tab1browser and tab2browser).  So, to make sure we can see a
+      // cmd-opt-y event in window1 (if one is available), regardless of where
+      // the focus is in this window, we need to add a "keypress" event
+      // listener to gChromeWindow, and then check (in onKeyPress()) to see if
+      // it's a cmd-opt-y event.
+      chromeWindow.addEventListener("keypress", onKeyPress);
+    }
+
+    // 1) Start loading first tab.
+    // 6) Start reloading first tab.
+    function loadFirstTab() {
+      var browser = document.getElementById("tab1browser");
+      BrowserTestUtils.startLoadingURIString(browser, "data:text/html;charset=utf-8,<body><h2>First Tab</h2><p><input type='submit' value='Button' id='button1'/></body>");
+    }
+
+    function configureFirstTab() {
+      try {
+        var button = document.getElementById("tab1browser").contentDocument.getElementById("button1");
+        button.addEventListener("click", onFirstTabButtonClicked);
+        button.focus();
+        if (document.getElementById("tabbox").selectedIndex == 0) {
+          // 2) When first tab has finished loading (while first tab is
+          //    focused), hit Return to trigger the action of first tab's
+          //    button.
+          synthesizeNativeReturnKey();
+        } else {
+          // 7) When first tab has finished reloading (while second tab is
+          //    focused), start loading second tab.
+          loadSecondTab();
+        }
+      } catch(e) {
+      }
+    }
+
+    // 8) Start loading second tab.
+    function loadSecondTab() {
+      var browser = document.getElementById("tab2browser");
+      BrowserTestUtils.startLoadingURIString(browser, "data:text/html;charset=utf-8,<body><h2>Second Tab</h2><p><input type='submit' value='Button' id='button1'/></body>");
+    }
+
+    function configureSecondTab() {
+      try {
+        var button = document.getElementById("tab2browser").contentDocument.getElementById("button1");
+        button.addEventListener("click", onSecondTabButtonClicked);
+        button.focus();
+        if (document.getElementById("tabbox").selectedIndex == 1) {
+          // 9) When second tab has finished loading (while second tab is
+          //    focused), hit Return to trigger action of second tab's
+          //    button.
+          synthesizeNativeReturnKey();
+        }
+      } catch(e) {
+      }
+    }
+
+    // 3) First tab's button clicked.
+    function onFirstTabButtonClicked() {
+      switchToSecondTabAndReloadFirst();
+    }
+
+    // 10) Second tab's button clicked.
+    function onSecondTabButtonClicked() {
+      switchToFirstTab();
+    }
+
+    function switchToSecondTabAndReloadFirst() {
+      // 4) Switch to second tab.
+      document.getElementById("tabbox").selectedIndex = 1;
+      // 5) Start reloading first tab (while second tab is focused).
+      loadFirstTab();
+    }
+
+    function switchToFirstTab() {
+      // 11) Switch back to first tab.
+      document.getElementById("tabbox").selectedIndex = 0;
+      doCmdY();
+    }
+
+    function doCmdY() {
+      // 12) Back in first tab, try cmd-y.
+      gCmdOptYReceived = false;
+      if (!synthesizeNativeCmdOptY(finishTest)) {
+        ok(false, "Failed to synthesize native key");
+        finishTest();
+      }
+    }
+
+    function finishTest() {
+      // 13) Check result.
+      is(gCmdOptYReceived, true);
+
+      SimpleTest.finish();
+    }
+
+    // synthesizeNativeReturnKey() and synthesizeNativeCmdOptY() are needed
+    // because their synthesizeKey() counterparts don't work properly -- the
+    // latter make this test succeed when it should fail.
+
+    // The 'aNativeKeyCode', 'aCharacters' and 'aUnmodifiedCharacters'
+    // parameters used below (in synthesizeNativeReturnKey() and
+    // synthesizeNativeCmdOptY()) were confirmed accurate using the
+    // DebugEventsPlugin v1.01 from bmo bug 441880.
+
+    function synthesizeNativeReturnKey() {
+      synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_Return, {}, "\u000a", "\u000a");
+    }
+
+    function synthesizeNativeCmdOptY(aCallback) {
+      return synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_Y, {metaKey:1, altKey:1}, "y", "y", aCallback);
+    }
+
+  ]]></script>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+</window>
diff --git a/widget/tests/test_bug429954.xhtml b/widget/tests/test_bug429954.xhtml
new file mode 100644
index 0000000000..40de88cd32
--- /dev/null
+++ b/widget/tests/test_bug429954.xhtml
@@ -0,0 +1,42 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=429954
+-->
+<window title="Mozilla Bug 429954"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+
+SimpleTest.waitForFocus(function () {
+  var win = Services.wm.getMostRecentWindow("navigator:browser");
+  win.maximize();
+  var maxX = win.screenX, maxY = win.screenY;
+  var maxWidth = win.outerWidth, maxHeight = win.outerHeight;
+  win.restore();
+
+  window.openDialog("window_bug429954.xhtml", "_blank", 
+                    "chrome,noopener,resizable,width=" + maxWidth + ",height=" + maxHeight +
+                    ",screenX=" + maxX + "screenY=" + maxY,
+                    window);
+});
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug444800.xhtml b/widget/tests/test_bug444800.xhtml
new file mode 100644
index 0000000000..f6d3535d72
--- /dev/null
+++ b/widget/tests/test_bug444800.xhtml
@@ -0,0 +1,97 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin"
+                 type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=444800
+-->
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        title="Mozilla Bug 444800" onload="initAndRunTests()">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <body xmlns="http://www.w3.org/1999/xhtml">
+  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=444800"
+     target="_blank">Mozilla Bug 444800</a>
+  <p/>
+  <img id="bitmapImage" src="data:image/bmp;base64,Qk2KAwAAAAAAAIoAAAB8AAAADwAAABAAAAABABgAAAAAAAADAAASCwAAEgsAAAAAAAAAAAAAAAD%2FAAD%2FAAD%2FAAAAAAAA%2FwEAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F0vf%2FAABc8tKY%2F%2F%2F%2FyNfq3Mi9%2F%2F%2F70vf%2FAABP8s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2Fzff%2FAABB8s2R5f%2F%2FAAB5LgAA%2F%2B7Czff%2FAABB7s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2Fzff%2FAABB99KRpdz%2FAAAAAAAA4Ktm0vv%2FAABB7s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2Fzff%2FAABB7teYQZHNkS4AebfImAAA1%2FfyAABP7s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2Fzff%2FAABByMiYAAB5159P0v%2F%2FAABBwtKrAABc7s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2Fzff%2FAABPcIJwAAAA%2B%2BW3%2F%2F%2F%2FAHC3gnBBAABP7s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2Fzff%2FAABcAAAAmE8A%2F%2F%2Fy%2F%2F%2F%2Fn9LyAAAAAAAA7s2Y%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FzfL%2FAABcAAAA4LFw%2F%2F%2F%2F%2F%2F%2F%2F4P%2F%2FAAB5AAAA7s2R%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F0vf%2FAABmXAAA%2F%2B7I%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FXJ%2FSAAAA8s2Y%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FAAAA"/>
+  <p/>
+  <pre id="test">
+  </pre>
+  </body>
+
+  <script class="testbody" type="application/javascript">
+  <![CDATA[
+const knsIClipboard = Ci.nsIClipboard;
+
+function copyImageToClipboard()
+{
+  SpecialPowers.setCommandNode(window, document.getElementById("bitmapImage"));
+
+  const kCmd = "cmd_copyImageContents";
+  var controller = top.document.commandDispatcher
+                   .getControllerForCommand(kCmd);
+  ok((controller && controller.isCommandEnabled(kCmd)), "have copy command");
+  controller.doCommand(kCmd);
+
+  SpecialPowers.setCommandNode(window, null);
+}
+
+function getLoadContext() {
+  return window.docShell.QueryInterface(Ci.nsILoadContext);
+}
+
+function runImageClipboardTests(aCBSvc, aImageType)
+{
+  // Verify that hasDataMatchingFlavors() is working correctly.
+  var typeArray = [ aImageType ];
+  var hasImage = aCBSvc.hasDataMatchingFlavors(typeArray,
+                                               knsIClipboard.kGlobalClipboard);
+  ok(hasImage, aImageType + " - hasDataMatchingFlavors()");
+
+  // Verify that getData() is working correctly.
+  var xfer = Cc["@mozilla.org/widget/transferable;1"]
+               .createInstance(Ci.nsITransferable);
+  xfer.init(getLoadContext());
+  xfer.addDataFlavor(aImageType);
+  aCBSvc.getData(xfer, knsIClipboard.kGlobalClipboard, SpecialPowers.wrap(window).browsingContext.currentWindowContext);
+
+  var typeObj = {}, dataObj = {};
+  xfer.getAnyTransferData(typeObj, dataObj);
+  var gotValue = (null != dataObj.value);
+  ok(gotValue, aImageType + " - getData() returned a value");
+  if (gotValue)
+  {
+    const knsIInputStream = Ci.nsIInputStream;
+    var imgStream = dataObj.value.QueryInterface(knsIInputStream);
+    ok((null != imgStream), aImageType + " - got an nsIInputStream");
+    var bytesAvailable = imgStream.available();
+    ok((bytesAvailable > 10), aImageType + " - got some data");
+  }
+}
+
+function initAndRunTests()
+{
+  SimpleTest.waitForExplicitFinish();
+
+  copyImageToClipboard();
+
+  var cbSvc = Cc["@mozilla.org/widget/clipboard;1"]
+                .getService(knsIClipboard);
+
+  // Work around a problem on Windows where clipboard is not ready after copy.
+  setTimeout(function() { runTests(cbSvc); }, 0);
+}
+
+function runTests(aCBSvc)
+{
+  runImageClipboardTests(aCBSvc, "image/png");
+  runImageClipboardTests(aCBSvc, "image/jpg");
+  runImageClipboardTests(aCBSvc, "image/jpeg");
+
+  SimpleTest.finish();
+}
+
+]]>
+</script>
+</window>
diff --git a/widget/tests/test_bug466599.xhtml b/widget/tests/test_bug466599.xhtml
new file mode 100644
index 0000000000..95b3593437
--- /dev/null
+++ b/widget/tests/test_bug466599.xhtml
@@ -0,0 +1,102 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=466599
+-->
+<window title="Mozilla Bug 466599"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="initAndRunTests()">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+  <!-- test code goes here -->
+  <script class="testbody" type="application/javascript">
+  <![CDATA[
+
+  /** Test for Bug 466599 */
+
+function getLoadContext() {
+  return window.docShell.QueryInterface(Ci.nsILoadContext);
+}
+
+function copyToClipboard(txt)
+{
+  var clipid = Ci.nsIClipboard;
+  var clip =
+    Cc['@mozilla.org/widget/clipboard;1'].createInstance(clipid);
+  if (!clip)
+    return false;
+  var trans =
+    Cc['@mozilla.org/widget/transferable;1'].createInstance(Ci.nsITransferable);
+  if (!trans)
+    return false;
+  trans.init(getLoadContext());
+  trans.addDataFlavor('text/html');
+  var str =
+    Cc['@mozilla.org/supports-string;1'].createInstance(Ci.nsISupportsString);
+  var copytext = txt;
+  str.data = copytext;
+  trans.setTransferData("text/html",str);
+  if (!clip)
+    return false;
+  clip.setData(trans,null,clipid.kGlobalClipboard);
+  return true;
+}
+
+function readFromClipboard()
+{
+  var clipid = Ci.nsIClipboard;
+  var clip =
+    Cc['@mozilla.org/widget/clipboard;1'].createInstance(clipid);
+  if (!clip)
+    return "";
+  var trans =
+    Cc['@mozilla.org/widget/transferable;1'].createInstance(Ci.nsITransferable);
+  if (!trans)
+    return "";
+  trans.init(getLoadContext());
+  trans.addDataFlavor('text/html');
+  clip.getData(trans, clipid.kGlobalClipboard, SpecialPowers.wrap(window).browsingContext.currentWindowContext);
+  var str = {};
+  trans.getTransferData("text/html",str);
+  if (str)
+    str = str.value.QueryInterface(Ci.nsISupportsString);
+  return str?.data;
+}
+
+function encodeHtmlEntities(s)
+{
+  var result = '';
+  for (var i = 0; i < s.length; i++) {
+    var c = s.charAt(i);
+    result += {'<':'&lt;', '>':'&gt;', '&':'&amp;', '"':'&quot;'}[c] || c;
+  }
+  return result;
+}
+
+function initAndRunTests()
+{
+  var source = '<p>Lorem ipsum</p>';
+  var expect = new RegExp('<html>.*charset=utf-8.*' + source + '.*</html>', 'im');
+
+  var result = copyToClipboard(source);
+  ok(result, "copied HTML data to system pasteboard");
+
+  result = readFromClipboard();
+  ok(expect.test(result), "data on system pasteboard is wrapped with charset metadata");
+
+  $("display").innerHTML =
+    '<em>source:</em> <pre>' + encodeHtmlEntities(source) + '</pre><br/>' +
+    '<em>result:</em> <pre>' + encodeHtmlEntities(result) + '</pre>';
+}
+
+  ]]>
+  </script>
+</window>
diff --git a/widget/tests/test_bug478536.xhtml b/widget/tests/test_bug478536.xhtml
new file mode 100644
index 0000000000..383c0bb42f
--- /dev/null
+++ b/widget/tests/test_bug478536.xhtml
@@ -0,0 +1,33 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=478536
+-->
+<window title="Mozilla Bug 478536"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <title>Test for Bug 478536</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+window.openDialog("window_bug478536.xhtml", "_blank", 
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug485118.xhtml b/widget/tests/test_bug485118.xhtml
new file mode 100644
index 0000000000..5c635f2982
--- /dev/null
+++ b/widget/tests/test_bug485118.xhtml
@@ -0,0 +1,72 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=485118
+-->
+<window title="Mozilla Bug 485118"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<hbox height="300">
+  <vbox width="300">
+    <scrollbar orient="horizontal"
+               maxpos="10000"
+               pageincrement="1"
+               id="horizontal"/>
+    <scrollbar orient="horizontal"
+               maxpos="10000"
+               pageincrement="1"
+               style="appearance: auto; -moz-default-appearance: scrollbar-small;"
+               id="horizontalSmall"/>
+    <hbox flex="1">
+      <scrollbar orient="vertical"
+                 maxpos="10000"
+                 pageincrement="1"
+                 id="vertical"/>
+      <scrollbar orient="vertical"
+                 maxpos="10000"
+                 pageincrement="1"
+                 style="appearance: auto; -moz-default-appearance: scrollbar-small;"
+                 id="verticalSmall"/>
+      <spacer flex="1"/>
+    </hbox>
+  </vbox>
+</hbox>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+
+function runTest() {
+  ["horizontal", "vertical"].forEach(function (orient) {
+    ["", "Small"].forEach(function (size) {
+      var elem = document.getElementById(orient + size);
+      var thumbRect = SpecialPowers.unwrap(
+        SpecialPowers.InspectorUtils.getChildrenForNode(elem, true, false)[0])
+        .childNodes[0].getBoundingClientRect();
+      var sizeToCheck = orient == "horizontal" ? "width" : "height";
+      // var expectedSize = size == "Small" ? 19 : 26;
+      var expectedSize = 26;
+      is(thumbRect[sizeToCheck], expectedSize, size + " scrollbar has wrong minimum " + sizeToCheck);
+    });
+  });
+  SimpleTest.finish();
+}
+window.addEventListener("load", runTest);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug517396.xhtml b/widget/tests/test_bug517396.xhtml
new file mode 100644
index 0000000000..c88baf49ab
--- /dev/null
+++ b/widget/tests/test_bug517396.xhtml
@@ -0,0 +1,53 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=517396
+-->
+<window title="Mozilla Bug 517396"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+
+SimpleTest.waitForFocus(function () {
+   // this test fails on Linux, bug 526236
+  if (navigator.platform.includes("Lin")) {
+    ok(true, "disabled on Linux");
+    SimpleTest.finish();
+    return;
+  }
+
+  var win = Services.wm.getMostRecentWindow("navigator:browser");
+  var oldWidth = win.outerWidth, oldHeight = win.outerHeight;
+  win.maximize();
+  var newWidth = win.outerWidth, newHeight = win.outerHeight;
+  win.moveBy(10, 0);
+  var sizeShouldHaveChanged = !navigator.platform.match(/Mac/);
+  var compFunc = sizeShouldHaveChanged ? isnot : is;
+  var not = sizeShouldHaveChanged ? "" : "not ";
+  compFunc(win.outerWidth, newWidth, "moving a maximized window should " + not + "have changed its width");
+  compFunc(win.outerHeight, newHeight, "moving a maximized window should " + not + "have changed its height");
+  win.restore();
+  is(win.outerWidth, oldWidth, "restored window has wrong width");
+  is(win.outerHeight, oldHeight, "restored window has wrong height");
+  SimpleTest.finish();
+});
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug522217.xhtml b/widget/tests/test_bug522217.xhtml
new file mode 100644
index 0000000000..0fa55a65e8
--- /dev/null
+++ b/widget/tests/test_bug522217.xhtml
@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=522217
+-->
+<window title="Mozilla Bug 522217"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+
+SimpleTest.waitForFocus(function () {
+  window.openDialog("window_bug522217.xhtml", "_blank", 
+                    "chrome,resizable,width=400,height=300,noopener", window);
+});
+
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug538242.xhtml b/widget/tests/test_bug538242.xhtml
new file mode 100644
index 0000000000..4608a74e35
--- /dev/null
+++ b/widget/tests/test_bug538242.xhtml
@@ -0,0 +1,55 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=538242
+-->
+<window title="Mozilla Bug 538242"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+if (navigator.platform.startsWith("Win")) {
+  SimpleTest.expectAssertions(0, 1);
+}
+
+SimpleTest.waitForExplicitFinish();
+
+SimpleTest.waitForFocus(function () {
+  if (navigator.platform.includes("Lin")) {
+    ok(true, "This test is disabled on Linux because it expects moving windows to be synchronous which is not guaranteed on Linux.");
+    SimpleTest.finish();
+    return;
+  }
+
+  var win = window.browsingContext.topChromeWindow.open(
+      "window_bug538242.xhtml", "_blank", 
+      "chrome,width=400,height=300,left=100,top=100");
+  SimpleTest.waitForFocus(function () {
+    is(win.screenX, 100, "window should open at 100, 100");
+    is(win.screenY, 100, "window should open at 100, 100");
+    var [oldX, oldY] = [win.screenX, win.screenY];
+    win.moveTo(0, 0);
+    isnot(win.screenX, oldX, "window should have moved to a point near 0, 0");
+    isnot(win.screenY, oldY, "window should have moved to a point near 0, 0");
+    win.close();
+    SimpleTest.finish();
+  }, win);
+});
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug565392.html b/widget/tests/test_bug565392.html
new file mode 100644
index 0000000000..b50053f23a
--- /dev/null
+++ b/widget/tests/test_bug565392.html
@@ -0,0 +1,62 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=565392
+-->
+<head>
+  <title>Test for Bug 565392</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=565392">Mozilla Bug 565392</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 565392 */
+
+var dir1 = Services.dirsvc.get("ProfD", Ci.nsIFile);
+var clipboard = Services.clipboard;
+
+  function getLoadContext() {
+    return window.docShell.QueryInterface(Ci.nsILoadContext);
+  }
+
+  function getTransferableFile(file) {
+    var transferable = Cc["@mozilla.org/widget/transferable;1"]
+                         .createInstance(Ci.nsITransferable);
+    transferable.init(getLoadContext());
+    transferable.setTransferData("application/x-moz-file", file);
+    return transferable;
+  }
+
+  function setClipboardData(transferable) {
+    clipboard.setData(transferable, null, 1);
+  }
+
+  function getClipboardData(mime) {
+    var transferable = Cc["@mozilla.org/widget/transferable;1"]
+                         .createInstance(Ci.nsITransferable);
+    transferable.init(getLoadContext());
+    transferable.addDataFlavor(mime);
+    clipboard.getData(transferable, 1, SpecialPowers.wrap(window).browsingContext.currentWindowContext);
+    var data = {};
+    transferable.getTransferData(mime, data);
+    return data;
+  }
+
+setClipboardData(getTransferableFile(dir1));
+is(clipboard.hasDataMatchingFlavors(["application/x-moz-file"], 1), true);
+var data = getClipboardData("application/x-moz-file");
+var file = data.value.QueryInterface(Ci.nsIFile);
+ok(file.isDirectory(), true);
+is(file.target, dir1.target, true);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/widget/tests/test_bug586713.xhtml b/widget/tests/test_bug586713.xhtml
new file mode 100644
index 0000000000..4733202264
--- /dev/null
+++ b/widget/tests/test_bug586713.xhtml
@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Native menu system tests"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+window.openDialog("bug586713_window.xhtml", "bug586713_window", 
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug593307.xhtml b/widget/tests/test_bug593307.xhtml
new file mode 100644
index 0000000000..770dd390cb
--- /dev/null
+++ b/widget/tests/test_bug593307.xhtml
@@ -0,0 +1,40 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=593307
+-->
+<window title="Mozilla Bug 593307"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+
+function finish() {
+  offscreenWindow.close();
+  SimpleTest.finish();
+}
+
+var mainWindow = window.browsingContext.topChromeWindow;
+
+var offscreenWindow = mainWindow.openDialog("window_bug593307_offscreen.xhtml", "",
+                                            "dialog=no,chrome,width=200,height=200,screenX=-3000,screenY=-3000",
+                                            SimpleTest, finish);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug596600.xhtml b/widget/tests/test_bug596600.xhtml
new file mode 100644
index 0000000000..4acdab79bc
--- /dev/null
+++ b/widget/tests/test_bug596600.xhtml
@@ -0,0 +1,190 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Native mouse event tests"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+
+var gLeftWindow, gRightWindow, gBrowserElement;
+
+function openWindows() {
+  gLeftWindow = window.browsingContext.topChromeWindow
+                      .open('empty_window.xhtml', '_blank', 'chrome,screenX=50,screenY=50,width=200,height=200');
+  SimpleTest.waitForFocus(function () {
+    gRightWindow = window.browsingContext.topChromeWindow
+                         .open('empty_window.xhtml', '', 'chrome,screenX=300,screenY=50,width=200,height=200');
+    SimpleTest.waitForFocus(attachBrowserToLeftWindow, gRightWindow);
+  }, gLeftWindow);
+}
+
+function attachBrowserToLeftWindow() {
+  gBrowserElement = gLeftWindow.document.createXULElement("browser");
+  gBrowserElement.setAttribute("type", "content");
+  gBrowserElement.setAttribute("src", "file_bug596600.html");
+  gBrowserElement.style.width = "100px";
+  gBrowserElement.style.height = "100px";
+  gBrowserElement.style.margin = "50px";
+  gLeftWindow.document.documentElement.appendChild(gBrowserElement);
+  gBrowserElement.addEventListener("load", async () => {
+    await test1();
+    await test2();
+    gRightWindow.close();
+    gLeftWindow.close();
+    SimpleTest.finish();
+  }, { capture: true, once: true });
+}
+
+async function test1() {
+  // gRightWindow is active, gLeftWindow is inactive.
+  info(`Synthesizing native "mousemove" event at top-left of the screen...`);
+  await promiseNativeMouseEvent({
+    type: "mousemove",
+    screenX: 0,
+    screenY: 0,
+    scale: "inScreenPixels",
+  });
+  await new Promise(resolve => SimpleTest.executeSoon(resolve));
+
+  // Move into the left window
+  info(`Synthesizing native "mousemove" event in the left window (but outside the content)...`);
+  await promiseNativeMouseEventAndWaitForEvent({
+    type: "mousemove",
+    target: gBrowserElement,
+    offsetX: -20,
+    offsetY: -20,
+    win: gLeftWindow,
+    eventTypeToWait: "mouseover",
+    eventTargetToListen: gLeftWindow,
+  });
+  ok(true, `"mouseover" event is fired on the left window when cursor is moved into it`);
+
+  // Move over the browser
+  info(`Synthesizing native "mousemove" event on the content in the left window...`);
+  await promiseNativeMouseEventAndWaitForEvent({
+    type: "mousemove",
+    target: gBrowserElement,
+    atCenter: true,
+    win: gLeftWindow,
+    eventTypeToWait: "mouseout",
+    eventTargetToListen: gLeftWindow,
+  });
+  ok(true, `"mouseout" event is fired on the left window when cursor is moved into its child browser`);
+}
+
+async function test2() {
+  // Make the browser cover the whole window.
+  gBrowserElement.style.margin = "0";
+  gBrowserElement.style.width = gBrowserElement.style.height = "200px";
+
+  // Add a box to the browser at the left edge.
+  var doc = gBrowserElement.contentDocument;
+  var box = doc.createElement("div");
+  box.setAttribute("id", "box");
+  box.style.position = "absolute";
+  box.style.left = "0";
+  box.style.top = "50px";
+  box.style.width = "100px";
+  box.style.height = "100px";
+  box.style.backgroundColor = "green";
+  doc.body.appendChild(box);
+
+  ok(!box.matches(":hover"), "Box shouldn't be hovered (since the mouse isn't over it and since it's in a non-clickthrough browser in a background window)");
+
+  // A function to waitForFocus and then wait for synthetic mouse
+  // events to happen.  Note that those happen off the refresh driver,
+  // and happen after animation frame requests.
+  function changeFocusAndAwaitSyntheticMouse(winToFocus,
+                                             elementToWatchForMouseEventOn) {
+    return Promise.all([
+      new Promise(resolve => {
+        function mouseWatcher() {
+          elementToWatchForMouseEventOn.removeEventListener("mouseover",
+                                                            mouseWatcher);
+          elementToWatchForMouseEventOn.removeEventListener("mouseout",
+                                                            mouseWatcher);
+          SimpleTest.executeSoon(resolve);
+        }
+        elementToWatchForMouseEventOn.addEventListener("mouseover",
+                                                      mouseWatcher);
+        elementToWatchForMouseEventOn.addEventListener("mouseout",
+                                                      mouseWatcher);
+      }),
+      new Promise(resolve => SimpleTest.waitForFocus(resolve, winToFocus)),
+    ]);
+  }
+
+  // Move the mouse over the box.
+  info(`Synthesizing native "mousemove" event into the box...`);
+  await promiseNativeMouseEvent({
+    type: "mousemove",
+    target: box,
+    atCenter: true,
+    win: gLeftWindow,
+  });
+  await new Promise(resolve =>
+    requestAnimationFrame(() => SimpleTest.executeSoon(resolve))
+  );
+  // XXX We cannot guarantee that the native mousemouse have already handled here.
+  ok(!box.matches(":hover"), "Box shouldn't be hovered (since it's in a non-clickthrough browser in a background window)");
+
+  // Activate the left window.
+  info("Waiting the left window activated...");
+  await changeFocusAndAwaitSyntheticMouse(gLeftWindow, box);
+  ok(gBrowserElement.matches(":hover"), "browser should be hovered");
+  ok(box.matches(":hover"), "Box should be hovered");
+
+  // De-activate the window (by activating the right window).
+  info("Waiting the right window activated...");
+  await changeFocusAndAwaitSyntheticMouse(gRightWindow, box);
+  ok(!gBrowserElement.matches(":hover"), "browser shouldn't be hovered");
+  ok(!box.matches(":hover"), "Box shouldn't be hovered");
+
+  // Re-activate it.
+  info("Waiting the left window activated again...");
+  await changeFocusAndAwaitSyntheticMouse(gLeftWindow, box);
+  ok(gBrowserElement.matches(":hover"), "browser should be hovered");
+  ok(box.matches(":hover"), "Box should be hovered");
+
+  // Unhover the box and the left window.
+  info(`Synthesizing native "mousemove" event outside the box and the left window...`);
+  await promiseNativeMouseEventAndWaitForEvent({
+    type: "mousemove",
+    screenX: 0,
+    screenY: 0,
+    scale: "inScreenPixels",
+    win: gLeftWindow,
+    eventTargetToListen: box,
+    eventTypeToWait: "mouseout",
+  });
+  await new Promise(resolve =>
+    requestAnimationFrame(() => SimpleTest.executeSoon(resolve))
+  );
+
+  ok(!gBrowserElement.matches(":hover"), "browser shouldn't be hovered");
+  ok(!box.matches(":hover"), "box shouldn't be hovered");
+}
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(openWindows);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_bug673301.xhtml b/widget/tests/test_bug673301.xhtml
new file mode 100644
index 0000000000..663f18397e
--- /dev/null
+++ b/widget/tests/test_bug673301.xhtml
@@ -0,0 +1,33 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none"/>
+</body>
+
+<script type="application/javascript">
+function getLoadContext() {
+  return window.docShell.QueryInterface(Ci.nsILoadContext);
+}
+
+var transferable = Cc['@mozilla.org/widget/transferable;1']
+                             .createInstance(Ci.nsITransferable);
+transferable.init(getLoadContext());
+
+transferable.addDataFlavor("text/plain");
+transferable.setTransferData("text/plain", document);
+
+Services.clipboard.setData(transferable, null, Ci.nsIClipboard.kGlobalClipboard);
+
+transferable.setTransferData("text/plain", null);
+
+SimpleTest.ok(true, "Didn't crash setting non-text data for text/plain type");
+</script>
+</window>
diff --git a/widget/tests/test_bug760802.xhtml b/widget/tests/test_bug760802.xhtml
new file mode 100644
index 0000000000..831b4dea93
--- /dev/null
+++ b/widget/tests/test_bug760802.xhtml
@@ -0,0 +1,81 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=760802
+-->
+<window title="Mozilla Bug 760802"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=760802"
+     target="_blank">Mozilla Bug 760802</a>
+  <p id="display"></p>
+  <div id="content" style="display: none"/>
+  <iframe id="iframe_not_editable" width="300" height="150"
+          src="data:text/html,&lt;html&gt;&lt;body&gt;&lt;/body&gt;&lt;/html&gt;"/><br/>
+  </body>
+
+  <!-- test code goes here -->
+  <script type="application/javascript"><![CDATA[
+SimpleTest.waitForExplicitFinish();
+
+function getBaseWindowInterface(win) {
+  return win.docShell
+    .treeOwner
+    .nsIBaseWindow;
+}
+
+function getBaseWindowInterfaceFromDocShell(win) {
+  return win.docShell.QueryInterface(Ci.nsIBaseWindow);
+}
+
+function shouldThrowException(fun, exception) {
+  try {
+    fun.call();
+    return false;
+  } catch (e) {
+    $("display").innerHTML += "<br/>OK thrown: "+e.message;
+    return (e instanceof Components.Exception &&
+            e.result === exception)
+  }
+}
+function doesntThrowException(fun) {
+  return !shouldThrowException(fun);
+}
+
+var baseWindow = getBaseWindowInterface(this);
+var nativeHandle = baseWindow.nativeHandle;
+$("display").innerHTML = "found nativeHandle for this window: "+nativeHandle;
+
+var win = Services.wm.getMostRecentWindow("navigator:browser");
+let docShell = getBaseWindowInterfaceFromDocShell(win);
+
+ok(
+  shouldThrowException(function(){docShell.nativeHandle;},
+              Cr.NS_ERROR_NOT_IMPLEMENTED),
+  "nativeHandle should not be implemented for nsDocShell"
+);
+
+ok(typeof(nativeHandle) === "string", "nativeHandle should be a string");
+ok(nativeHandle.match(/^0x[0-9a-f]+$/), "nativeHandle should have a memory address format");
+
+var iWin = document.getElementById("iframe_not_editable").contentWindow;
+is(getBaseWindowInterface(iWin).nativeHandle, nativeHandle,
+   "the nativeHandle of an iframe should be its parent's nativeHandle");
+
+var dialog = win.openDialog("data:text/plain,this is an active window.", "_blank",
+                            "chrome,dialog=yes,width=100,height=100");
+
+isnot(getBaseWindowInterface(dialog).nativeHandle, "",
+      "the nativeHandle of a dialog should not be empty");
+
+dialog.close();
+
+todo(false, "the nativeHandle of a window without a mainWidget should be empty"); // how to build a window without a mainWidget ?
+
+SimpleTest.finish();
+  ]]></script>
+</window>
diff --git a/widget/tests/test_clipboard.html b/widget/tests/test_clipboard.html
new file mode 100644
index 0000000000..35ad84ad73
--- /dev/null
+++ b/widget/tests/test_clipboard.html
@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=948065
+-->
+<head>
+<title>Test for Bug 948065</title>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<!-- Tests are in file_test_clipboard.js -->
+<script src="file_test_clipboard.js"></script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_asyncGetData.html b/widget/tests/test_clipboard_asyncGetData.html
new file mode 100644
index 0000000000..0cb3dc2aa1
--- /dev/null
+++ b/widget/tests/test_clipboard_asyncGetData.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1852947
+-->
+<head>
+<title>Test for Bug 1852947</title>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<!-- Tests are in file_clipboard_asyncGetData.js -->
+<script src="file_test_clipboard_asyncGetData.js"></script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_asyncGetData_chrome.html b/widget/tests/test_clipboard_asyncGetData_chrome.html
new file mode 100644
index 0000000000..d4e44185a5
--- /dev/null
+++ b/widget/tests/test_clipboard_asyncGetData_chrome.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1852947
+-->
+<head>
+<title>Test for Bug 1852947</title>
+<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<!-- Tests are in file_clipboard_asyncGetData.js -->
+<script src="file_test_clipboard_asyncGetData.js"></script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_asyncSetData.html b/widget/tests/test_clipboard_asyncSetData.html
new file mode 100644
index 0000000000..05e2ca714b
--- /dev/null
+++ b/widget/tests/test_clipboard_asyncSetData.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1712122
+-->
+<head>
+<title>Test for Bug 1712122</title>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<!-- Tests are in file_test_clipboard_asyncSetData.js -->
+<script src="file_test_clipboard_asyncSetData.js"></script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_asyncSetData_chrome.html b/widget/tests/test_clipboard_asyncSetData_chrome.html
new file mode 100644
index 0000000000..61afb9067b
--- /dev/null
+++ b/widget/tests/test_clipboard_asyncSetData_chrome.html
@@ -0,0 +1,19 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1712122
+-->
+<head>
+<title>Test for Bug 1712122</title>
+<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<!-- Tests are in file_test_clipboard_asyncSetData.js -->
+<script src="file_test_clipboard_asyncSetData.js"></script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_cache_chrome.html b/widget/tests/test_clipboard_cache_chrome.html
new file mode 100644
index 0000000000..55b6d41589
--- /dev/null
+++ b/widget/tests/test_clipboard_cache_chrome.html
@@ -0,0 +1,231 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1812543
+-->
+<head>
+<title>Test for Bug 1812543</title>
+<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<script class="testbody" type="application/javascript">
+
+function testClipboardCache(aClipboardType, aAsync, aIsSupportGetFromCachedTransferable) {
+  add_task(function test_clipboard_get() {
+    info(`test_clipboard_get ${aAsync ? "async " : ""}` +
+         `with pref ${aIsSupportGetFromCachedTransferable ? "enabled" : "disabled"}`);
+
+    const string = generateRandomString();
+    const trans = generateNewTransferable("text/plain", string);
+
+    info(`Write text/plain data to clipboard ${aClipboardType}`);
+    if (aAsync) {
+      let request = clipboard.asyncSetData(aClipboardType);
+      request.setData(trans, null);
+    } else {
+      clipboard.setData(trans, null, aClipboardType);
+    }
+    is(getClipboardData("text/plain", aClipboardType), string,
+       `Check text/plain data on clipboard ${aClipboardType}`);
+
+    info(`Add text/foo data to transferable`);
+    addStringToTransferable("text/foo", string, trans);
+    // XXX macOS caches the transferable to implement kSelectionCache type, too,
+    // so it behaves differently than other types.
+    if (aClipboardType == clipboard.kSelectionCache && !aIsSupportGetFromCachedTransferable) {
+      todo_is(getClipboardData("text/foo", aClipboardType),
+              aIsSupportGetFromCachedTransferable ? string : null,
+              `Check text/foo data on clipboard ${aClipboardType}`);
+    } else {
+      is(getClipboardData("text/foo", aClipboardType),
+         aIsSupportGetFromCachedTransferable ? string : null,
+         `Check text/foo data on clipboard ${aClipboardType}`);
+    }
+
+    info(`Should not get the data from other clipboard type`);
+    clipboardTypes.forEach(function(otherType) {
+      if (otherType != aClipboardType &&
+          clipboard.isClipboardTypeSupported(otherType)) {
+        is(getClipboardData("text/plain", otherType), null,
+           `Check text/plain data on clipboard ${otherType}`);
+        is(getClipboardData("text/foo", otherType), null,
+           `Check text/foo data on clipboard ${otherType}`);
+
+        info(`Write text/plain data to clipboard ${otherType}`);
+        writeRandomStringToClipboard("text/plain", otherType);
+      }
+    });
+
+    info(`Check data on clipboard ${aClipboardType} again`);
+    is(getClipboardData("text/plain", aClipboardType), string,
+       `Check text/plain data on clipboard ${aClipboardType} again`);
+    // XXX macOS caches the transferable to implement kSelectionCache type, too,
+    // so it behaves differently than other types.
+    if (aClipboardType == clipboard.kSelectionCache && !aIsSupportGetFromCachedTransferable) {
+      todo_is(getClipboardData("text/foo", aClipboardType),
+              aIsSupportGetFromCachedTransferable ? string : null,
+              `Check text/foo data on clipboard ${aClipboardType} again`);
+    } else {
+      is(getClipboardData("text/foo", aClipboardType),
+         aIsSupportGetFromCachedTransferable ? string : null,
+         `Check text/foo data on clipboard ${aClipboardType} again`);
+    }
+
+    info(`Clean all clipboard data`);
+    cleanupAllClipboard();
+  });
+}
+
+function runClipboardCacheTests(aIsSupportGetFromCachedTransferable) {
+  add_task(async function setup() {
+    cleanupAllClipboard();
+    await SpecialPowers.pushPrefEnv({
+      set: [
+        [
+          "widget.clipboard.use-cached-data.enabled",
+          aIsSupportGetFromCachedTransferable,
+        ],
+      ],
+    });
+  });
+
+  clipboardTypes.forEach(function (type) {
+    if (!clipboard.isClipboardTypeSupported(type)) {
+      return;
+    }
+
+    add_task(function test_clipboard_hasDataMatchingFlavors() {
+      info(`test_clipboard_hasDataMatchingFlavors with pref ` +
+           `${aIsSupportGetFromCachedTransferable ? "enabled" : "disabled"}`);
+
+      const trans = generateNewTransferable("text/plain", generateRandomString());
+
+      info(`Write text/plain data to clipboard ${type}`);
+      clipboard.setData(trans, null, type);
+      ok(clipboard.hasDataMatchingFlavors(["text/plain"], type),
+         `Check if there is text/plain flavor on clipboard ${type}`);
+      ok(!clipboard.hasDataMatchingFlavors(["text/foo"], type),
+         `Check if there is text/foo flavor on clipboard ${type}`);
+
+      info(`Add text/foo data to transferable`);
+      addStringToTransferable("text/foo", generateRandomString(), trans);
+      ok(clipboard.hasDataMatchingFlavors(["text/plain"], type),
+         `Check if there is text/plain flavor on clipboard ${type}`);
+      // XXX macOS caches the transferable to implement kSelectionCache type, too,
+      // so it behaves differently than other types.
+      if (type == clipboard.kSelectionCache && !aIsSupportGetFromCachedTransferable) {
+        todo_is(clipboard.hasDataMatchingFlavors(["text/foo"], type),
+                aIsSupportGetFromCachedTransferable,
+                `Check if there is text/foo flavor on clipboard ${type}`);
+      } else {
+        is(clipboard.hasDataMatchingFlavors(["text/foo"], type),
+           aIsSupportGetFromCachedTransferable,
+           `Check if there is text/foo flavor on clipboard ${type}`);
+      }
+
+      // Check other clipboard types.
+      clipboardTypes.forEach(function(otherType) {
+        if (otherType != type &&
+            clipboard.isClipboardTypeSupported(otherType)) {
+          ok(!clipboard.hasDataMatchingFlavors(["text/plain"], otherType),
+             `Check if there is text/plain flavor on clipboard ${otherType}`);
+          ok(!clipboard.hasDataMatchingFlavors(["text/foo"], otherType),
+             `Check if there is text/foo flavor on clipboard ${otherType}`);
+
+          info(`Write text/plain data to clipboard ${otherType}`);
+          writeRandomStringToClipboard("text/plain", otherType);
+        }
+      });
+
+      // Check again.
+      ok(clipboard.hasDataMatchingFlavors(["text/plain"], type),
+         `Check if there is text/plain flavor on clipboard ${type}`);
+      // XXX macOS caches the transferable to implement kSelectionCache type, too,
+      // so it behaves differently than other types.
+      if (type == clipboard.kSelectionCache && !aIsSupportGetFromCachedTransferable) {
+        todo_is(clipboard.hasDataMatchingFlavors(["text/foo"], type),
+                aIsSupportGetFromCachedTransferable,
+                `Check if there is text/foo flavor on clipboard ${type}`);
+      } else {
+        is(clipboard.hasDataMatchingFlavors(["text/foo"], type),
+           aIsSupportGetFromCachedTransferable,
+           `Check if there is text/foo flavor on clipboard ${type}`);
+      }
+
+      info(`Write text/plain data to clipboard ${type} again`);
+      writeRandomStringToClipboard("text/plain", type);
+      ok(clipboard.hasDataMatchingFlavors(["text/plain"], type),
+         `Check if there is text/plain flavor on clipboard ${type}`);
+      ok(!clipboard.hasDataMatchingFlavors(["text/foo"], type),
+         `Check if there is text/foo flavor on clipboard ${type}`);
+
+      // Clean clipboard data.
+      cleanupAllClipboard();
+    });
+
+    add_task(async function test_clipboard_asyncGetData() {
+      const testClipboardData = async function(aRequest, aExpectedData) {
+        is(aRequest.flavorList.length, Object.keys(aExpectedData).length, "Check flavorList length");
+        for (const [key, value] of Object.entries(aExpectedData)) {
+          ok(aRequest.flavorList.includes(key), `${key} should be available`);
+          is(await asyncClipboardRequestGetData(aRequest, key), value,
+             `Check ${key} data`);
+        }
+      };
+
+      info(`test_clipboard_hasDataMatchingFlavors with pref ` +
+           `${aIsSupportGetFromCachedTransferable ? "enabled" : "disabled"}`);
+
+      const clipboardData = { "text/plain": generateRandomString() };
+      const trans = generateNewTransferable("text/plain", clipboardData["text/plain"]);
+
+      info(`Write text/plain data to clipboard ${type}`);
+      clipboard.setData(trans, null, type);
+      await testClipboardData(await asyncGetClipboardData(type), clipboardData);
+
+      info(`Add text/html data to transferable`);
+      const htmlString = `<div>${generateRandomString()}</div>`;
+      addStringToTransferable("text/html", htmlString, trans);
+      // XXX macOS uses cached transferable to implement kSelectionCache type, too,
+      // so it behaves differently than other types.
+      if (aIsSupportGetFromCachedTransferable ||
+          (type == clipboard.kSelectionCache && !SpecialPowers.isHeadless)) {
+        clipboardData["text/html"] = htmlString;
+      }
+      await testClipboardData(await asyncGetClipboardData(type), clipboardData);
+
+      info(`Should not get the data from other clipboard type`);
+      clipboardTypes.forEach(async function(otherType) {
+        if (otherType != type &&
+            clipboard.isClipboardTypeSupported(otherType)) {
+          info(`Check clipboard type ${otherType}`);
+          await testClipboardData(await asyncGetClipboardData(otherType), {});
+        }
+      });
+
+      info(`Check data on clipboard ${type} again`);
+      await testClipboardData(await asyncGetClipboardData(type), clipboardData);
+    });
+
+    // Test sync set clipboard data.
+    testClipboardCache(type, false, aIsSupportGetFromCachedTransferable);
+
+    // Test async set clipboard data.
+    testClipboardCache(type, true, aIsSupportGetFromCachedTransferable);
+});
+}
+
+// Test not get data from clipboard cache.
+runClipboardCacheTests(false);
+
+// Test get data from clipboard cache.
+runClipboardCacheTests(true);
+
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_chrome.html b/widget/tests/test_clipboard_chrome.html
new file mode 100644
index 0000000000..387e3975b3
--- /dev/null
+++ b/widget/tests/test_clipboard_chrome.html
@@ -0,0 +1,16 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=948065
+-->
+<head>
+<title>Test for Bug 948065</title>
+<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<!-- Tests are in file_test_clipboard.js -->
+<script src="file_test_clipboard.js"></script>
+</body>
+</html>
diff --git a/widget/tests/test_clipboard_owner_chrome.html b/widget/tests/test_clipboard_owner_chrome.html
new file mode 100644
index 0000000000..4759b2b14c
--- /dev/null
+++ b/widget/tests/test_clipboard_owner_chrome.html
@@ -0,0 +1,75 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1812078
+-->
+<head>
+<title>Test for Bug 1812078</title>
+<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+<script src="clipboard_helper.js"></script>
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<script class="testbody" type="application/javascript">
+
+function testClipboardOwner(aClipboardType, aAsync) {
+  let losingOwnership = false;
+  const clipboardOwner = {
+    QueryInterface: ChromeUtils.generateQI(["nsIClipboardOwner"]),
+    // nsIClipboardOwner
+    LosingOwnership(aTransferable) {
+      losingOwnership = true;
+    },
+  };
+
+  add_task(function test_clipboard_owner() {
+    info(`Test clipboard owner for type ${aClipboardType} ${aAsync ? "async" : ""}`);
+
+    // Setup clipboard owner.
+    writeRandomStringToClipboard("text/plain", aClipboardType, clipboardOwner, aAsync);
+
+    // Test should not lose ownership.
+    clipboardTypes.forEach(function(otherType) {
+      losingOwnership = false;
+      if (aClipboardType != otherType && clipboard.isClipboardTypeSupported(otherType)) {
+        // Test setting clipboard data.
+        writeRandomStringToClipboard("text/plain", otherType);
+        ok(!losingOwnership, `Should not lose ownership while setting data to type ${otherType}`);
+
+        // Test async setting clipboard data.
+        writeRandomStringToClipboard("text/plain", otherType, null, true);
+        ok(!losingOwnership, `Should not lose ownership while async setting data to type ${otherType}`);
+      }
+    });
+
+    // Test whether should lose ownership.
+    losingOwnership = false;
+    writeRandomStringToClipboard("text/plain", aClipboardType, clipboardOwner);
+    ok(losingOwnership, `Should lose ownership while setting data to type ${aClipboardType}`);
+
+    losingOwnership = false;
+    writeRandomStringToClipboard("text/plain", aClipboardType, null, true);
+    ok(losingOwnership, `Should lose ownership while async setting data to type ${aClipboardType}`);
+
+    // Clean clipboard data.
+    cleanupAllClipboard();
+  });
+}
+
+/** Test for Bug 1812078 */
+clipboardTypes.forEach(function(testType) {
+  if (clipboard.isClipboardTypeSupported(testType)) {
+    // Test sync set clipboard data.
+    testClipboardOwner(testType, false);
+
+    // Test async set clipboard data.
+    testClipboardOwner(testType, true);
+  }
+});
+
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_composition_text_querycontent.xhtml b/widget/tests/test_composition_text_querycontent.xhtml
new file mode 100644
index 0000000000..48b7af8100
--- /dev/null
+++ b/widget/tests/test_composition_text_querycontent.xhtml
@@ -0,0 +1,34 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Testing composition, text and query content events"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+// 3 assertions are: If setting selection with eSetSelection event whose range
+// is larger than the actual range, hits "Can only call this on frames that have
+// been reflowed:
+// '!(GetStateBits() & NS_FRAME_FIRST_REFLOW) || (GetParent()->GetStateBits() &
+// NS_FRAME_TOO_DEEP_IN_FRAME_TREE)'" in nsTextFrame.cpp.
+// Strangely, this doesn't occur with RDP on Windows.
+SimpleTest.expectAssertions(0, 3);
+SimpleTest.waitForExplicitFinish();
+window.openDialog("window_composition_text_querycontent.xhtml", "_blank", 
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+</window>
diff --git a/widget/tests/test_contextmenu_by_mouse_on_unix.html b/widget/tests/test_contextmenu_by_mouse_on_unix.html
new file mode 100644
index 0000000000..2b1f643dfc
--- /dev/null
+++ b/widget/tests/test_contextmenu_by_mouse_on_unix.html
@@ -0,0 +1,105 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Test to fire contextmenu event by widget level</title>
+<script src="/tests/SimpleTest/EventUtils.js"></script>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/SpecialPowers.js"></script>
+<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+<style>
+#target {
+  width: 100px;
+  height: 100px;
+  background-color: blue;
+}
+</style>
+<script>
+"use strict";
+add_task(async function test_fire_contextmenu_by_mousedown() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["ui.context_menus.after_mouseup", false]],
+  });
+  await SimpleTest.promiseFocus();
+
+  // contextmenu event is fired by mouse down.
+  await process_contextmenu_event({ isMousedown: true, preventEvent: false });
+  // contextmenu event is fired by mouse down even if mouse handler calls preventDefault.
+  await process_contextmenu_event({ isMousedown: true, preventEvent: true });
+});
+
+add_task(async function test_fire_contextmenu_by_mouseup() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["ui.context_menus.after_mouseup", true]],
+  });
+  await SimpleTest.promiseFocus();
+
+  // contextmenu event is fired by mouse up.
+  await process_contextmenu_event({ isMousedown: false, preventEvent: false });
+  // contextmenu event is fired by mouse up even if mouse handler calls preventDefault.
+  await process_contextmenu_event({ isMousedown: false, preventEvent: true });
+});
+
+async function process_contextmenu_event({ isMousedown, preventEvent }) {
+  await SpecialPowers.contentTransformsReceived(window);
+
+  const target = document.getElementById("target");
+
+  let count = 0;
+
+  const promise = new Promise(resolve => {
+    target.addEventListener("mousedown", e => {
+      is(e.buttons, 2, "The right button down should be fired");
+      is(count++, 0, "The first event is mousedown");
+      if (isMousedown && preventEvent) {
+        e.preventDefault();
+      }
+    }, { once: true });
+
+    if (isMousedown) {
+      target.addEventListener("contextmenu", e => {
+        is(count++, 1, "The second event is contextmenu");
+        e.preventDefault();
+      }, { once: true });
+      target.addEventListener("mouseup", e => {
+        is(count++, 2, "The third event is mouseup");
+	resolve();
+      }, { once: true} );
+    } else {
+      target.addEventListener("mouseup", e => {
+        is(count++, 1, "The second event is mouseup");
+        if (preventEvent) {
+          e.preventDefault();
+        }
+      }, { once: true });
+      target.addEventListener("contextmenu", e => {
+        is(count++, 2, "The third event is contextmenu");
+        e.preventDefault();
+	resolve();
+      }, { once: true });
+    }
+  });
+
+  synthesizeNativeMouseEvent({
+    type: "mousedown",
+    target,
+    offsetX: 10,
+    offsetY: 10,
+    button: 2,
+  });
+
+  synthesizeNativeMouseEvent({
+    type: "mouseup",
+    target,
+    offsetX: 10,
+    offsetY: 10,
+    button: 2,
+  });
+
+  await promise;
+}
+</script>
+</head>
+<body>
+<div id="target"></div>
+</body>
+</html>
diff --git a/widget/tests/test_ime_state_in_contenteditable_on_readonly_change_in_parent.html b/widget/tests/test_ime_state_in_contenteditable_on_readonly_change_in_parent.html
new file mode 100644
index 0000000000..8d8662a8d8
--- /dev/null
+++ b/widget/tests/test_ime_state_in_contenteditable_on_readonly_change_in_parent.html
@@ -0,0 +1,72 @@
+<html>
+<head>
+  <title>Test for IME state of contenteditable on readonly state change</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <script src="file_test_ime_state_in_contenteditable_on_readonly_change.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+<script>
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+/* import-globals-from file_test_ime_state_in_contenteditable_on_readonly_change.js */
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(async () => {
+  const tipWrapper = new TIPWrapper(window);
+  const editingHost = document.querySelector("div[contenteditable]");
+  await (async function test_ime_state_in_contenteditable_on_readonly_change() {
+    const tester = new IMEStateInContentEditableOnReadonlyChangeTester();
+    tester.checkResultOfPreparation(await tester.prepareToRun(editingHost, editingHost), window, tipWrapper);
+    tester.checkResultOfMakingHTMLEditorReadonly(await tester.runToMakeHTMLEditorReadonly());
+    tester.checkResultOfMakingHTMLEditorEditable(await tester.runToMakeHTMLEditorEditable());
+    tester.checkResultOfRemovingContentEditableAttribute(await tester.runToRemoveContentEditableAttribute());
+    tester.clear();
+  })();
+
+  await (async function test_ime_state_in_button_in_contenteditable_on_readonly_change() {
+    const tester = new IMEStateInContentEditableOnReadonlyChangeTester();
+    const button = editingHost.querySelector("button");
+    tester.checkResultOfPreparation(await tester.prepareToRun(editingHost, button), window, tipWrapper);
+    tester.checkResultOfMakingHTMLEditorReadonly(await tester.runToMakeHTMLEditorReadonly());
+    tester.checkResultOfMakingHTMLEditorEditable(await tester.runToMakeHTMLEditorEditable());
+    tester.checkResultOfRemovingContentEditableAttribute(await tester.runToRemoveContentEditableAttribute());
+    tester.clear();
+  })();
+
+  await (async function test_ime_state_of_text_controls_in_contenteditable_on_readonly_change() {
+    const tester = new IMEStateOfTextControlInContentEditableOnReadonlyChangeTester();
+    for (let index = 0;
+         index < IMEStateOfTextControlInContentEditableOnReadonlyChangeTester.numberOfTextControlTypes;
+         index++) {
+      tester.checkResultOfPreparation(await tester.prepareToRun(index, editingHost), window, tipWrapper);
+      tester.checkResultOfMakingParentEditingHost(await tester.runToMakeParentEditingHost());
+      tester.checkResultOfMakingHTMLEditorReadonly(await tester.runToMakeHTMLEditorReadonly());
+      tester.checkResultOfMakingHTMLEditorEditable(await tester.runToMakeHTMLEditorEditable());
+      tester.checkResultOfMakingParentNonEditable(await tester.runToMakeParentNonEditingHost());
+      tester.clear();
+    }
+    editingHost.setAttribute("contenteditable", "");
+  })();
+
+  await (async function test_ime_state_outside_contenteditable_on_readonly_change() {
+    const tester = new IMEStateOutsideContentEditableOnReadonlyChangeTester();
+    for (let index = 0;
+         index < IMEStateOutsideContentEditableOnReadonlyChangeTester.numberOfFocusTargets;
+         index++) {
+      tester.checkResultOfPreparation(await tester.prepareToRun(index, editingHost), window, tipWrapper);
+      tester.checkResultOfMakingParentEditingHost(await tester.runToMakeParentEditingHost());
+      tester.checkResultOfMakingHTMLEditorReadonly(await tester.runToMakeHTMLEditorReadonly());
+      tester.checkResultOfMakingHTMLEditorEditable(await tester.runToMakeHTMLEditorEditable());
+      tester.checkResultOfMakingParentNonEditable(await tester.runToMakeParentNonEditingHost());
+      tester.clear();
+    }
+    editingHost.setAttribute("contenteditable", "");
+  })();
+
+  SimpleTest.finish();
+});
+</script>
+</head>
+<body><div contenteditable><br><button>button</button></div></body>
+</html>
diff --git a/widget/tests/test_ime_state_in_plugin_in_parent.html b/widget/tests/test_ime_state_in_plugin_in_parent.html
new file mode 100644
index 0000000000..9f3892ab88
--- /dev/null
+++ b/widget/tests/test_ime_state_in_plugin_in_parent.html
@@ -0,0 +1,92 @@
+<html>
+<head>
+  <title>Test for IME state on plugin</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+</head>
+<body>
+<input>
+<object type="application/x-test"></object>
+<script>
+"use strict";
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(() => {
+  const tipWrapper = new TIPWrapper(window);
+  const plugin = document.querySelector("object");
+
+  // Plugins are not supported and their elements should not accept focus;
+  // therefore, IME should not enable when we play with it.
+
+  document.activeElement?.blur();
+  is(
+    window.windowUtils.IMEStatus,
+    Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    "IME enabled state should be disabled when no element has focus"
+  );
+  ok(
+    !tipWrapper.IMEHasFocus,
+    "IME should not have focus when no element has focus"
+  );
+
+  plugin.focus();
+  is(
+    window.windowUtils.IMEStatus,
+    Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    "IME enabled state should be disabled when an <object> for plugin has focus"
+  );
+  ok(
+    !tipWrapper.IMEHasFocus,
+    "IME should not have focus when an <object> for plugin has focus"
+  );
+
+  plugin.blur();
+  is(
+    window.windowUtils.IMEStatus,
+    Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    "IME enabled state should be disabled when an <object> for plugin gets blurred"
+  );
+  ok(
+    !tipWrapper.IMEHasFocus,
+    "IME should not have focus when an <object> for plugin gets blurred"
+  );
+
+  plugin.focus();
+  is(
+    window.windowUtils.IMEStatus,
+    Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    "IME enabled state should be disabled when an <object> for plugin gets focused again"
+  );
+  ok(
+    !tipWrapper.IMEHasFocus,
+    "IME should not have focus when an <object> for plugin gets focused again"
+  );
+
+  plugin.remove();
+  is(
+    window.windowUtils.IMEStatus,
+    Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+    "IME enabled state should be disabled when focused <object> for plugin is removed from the document"
+  );
+  ok(
+    !tipWrapper.IMEHasFocus,
+    "IME should not have focus when focused <object> for plugin is removed from the document"
+  );
+
+  document.querySelector("input").focus();
+  is(
+    window.windowUtils.IMEStatus,
+    Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+    "IME enabled state should be enabled after <input> gets focus"
+  );
+  ok(
+    tipWrapper.IMEHasFocus,
+    "IME should have focus after <input> gets focus"
+  );
+
+  SimpleTest.finish();
+});
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_ime_state_in_text_control_on_reframe_in_parent.html b/widget/tests/test_ime_state_in_text_control_on_reframe_in_parent.html
new file mode 100644
index 0000000000..ab38806261
--- /dev/null
+++ b/widget/tests/test_ime_state_in_text_control_on_reframe_in_parent.html
@@ -0,0 +1,42 @@
+<html>
+<head>
+  <title>Test for IME state of contenteditable on readonly state change</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <script src="file_test_ime_state_in_text_control_on_reframe.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+</head>
+<script>
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+/* import-globals-from file_test_ime_state_in_text_control_on_reframe.js */
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(async () => {
+  const tipWrapper = new TIPWrapper(window);
+  const tester = new IMEStateInTextControlOnReframeTester();
+  for (let index = 0;
+        index < IMEStateInTextControlOnReframeTester.numberOfTextControlTypes;
+        index++) {
+    tipWrapper.clearFocusBlurNotifications();
+    const expectedData1 = await tester.prepareToRun(index, document);
+    tipWrapper.typeA();
+    await new Promise(resolve => requestAnimationFrame(
+      () => requestAnimationFrame(resolve)
+    )); // Flush IME content observer notifications.
+    tester.checkResultAfterTypingA(expectedData1, window, tipWrapper);
+
+    const expectedData2 = await tester.prepareToRun2(index, document);
+    tipWrapper.typeA();
+    await new Promise(resolve => requestAnimationFrame(
+      () => requestAnimationFrame(resolve)
+    )); // Flush IME content observer notifications.
+    tester.checkResultAfterTypingA2(expectedData2);
+  }
+
+  SimpleTest.finish();
+});
+</script>
+<body></body>
+</html>
diff --git a/widget/tests/test_ime_state_on_editable_state_change_in_parent.html b/widget/tests/test_ime_state_on_editable_state_change_in_parent.html
new file mode 100644
index 0000000000..a1b307a51f
--- /dev/null
+++ b/widget/tests/test_ime_state_on_editable_state_change_in_parent.html
@@ -0,0 +1,263 @@
+<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Test for IME state management at changing editable state</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+</head>
+<body>
+<div></div>
+<script>
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(async () => {
+  const tipWrapper = new TIPWrapper(window);
+
+  function waitForIMEContentObserverSendingNotifications() {
+    return new Promise(
+      resolve => requestAnimationFrame(
+        () => requestAnimationFrame(resolve)
+      )
+    );
+  }
+
+  function resetIMEStateWithFocusMove() {
+    const input = document.createElement("input");
+    document.body.appendChild(input);
+    input.focus();
+    input.remove();
+    return waitForIMEContentObserverSendingNotifications();
+  }
+
+  await (async function test_setting_contenteditable_of_focused_div() {
+    const div = document.querySelector("div");
+    div.setAttribute("tabindex", "0");
+    div.focus();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      "test_setting_contenteditable_of_focused_div: IME should be disabled when non-editable <div> has focus"
+    );
+    div.setAttribute("contenteditable", "");
+    await waitForIMEContentObserverSendingNotifications();
+    // Sometimes, it's not enough waiting only 2 animation frames here to wait
+    // for IME focus, perhaps, it may be related to HTMLEditor initialization.
+    // Let's wait one more animation frame here.
+    if (!tipWrapper.IMEHasFocus) {
+      await new Promise(resolve => requestAnimationFrame(resolve));
+    }
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+      "test_setting_contenteditable_of_focused_div: IME should be enabled when contenteditable of focused <div> is set"
+    );
+    ok(
+      tipWrapper.IMEHasFocus,
+      "test_setting_contenteditable_of_focused_div: IME should have focus when contenteditable of focused <div> is set"
+    )
+    div.removeAttribute("contenteditable");
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      "test_setting_contenteditable_of_focused_div: IME should be disabled when contenteditable of focused <div> is removed"
+    );
+    ok(
+      !tipWrapper.IMEHasFocus,
+      "test_setting_contenteditable_of_focused_div: IME should not have focus when contenteditable of focused <div> is removed"
+    );
+    div.removeAttribute("tabindex");
+  })();
+
+  await resetIMEStateWithFocusMove();
+
+  await (async function test_removing_contenteditable_of_non_last_editable_div() {
+    const div = document.querySelector("div");
+    div.setAttribute("tabindex", "0");
+    div.setAttribute("contenteditable", "");
+    const anotherEditableDiv = document.createElement("div");
+    anotherEditableDiv.setAttribute("contenteditable", "");
+    div.parentElement.appendChild(anotherEditableDiv);
+    div.focus();
+    await waitForIMEContentObserverSendingNotifications();
+    div.removeAttribute("contenteditable");
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      "test_removing_contenteditable_of_non_last_editable_div: IME should be disabled when contenteditable of focused <div> is removed"
+    );
+    ok(
+      !tipWrapper.IMEHasFocus,
+      "test_removing_contenteditable_of_non_last_editable_div: IME should not have focus when contenteditable of focused <div> is removed"
+    );
+    anotherEditableDiv.remove();
+    div.removeAttribute("tabindex");
+  })();
+
+  await resetIMEStateWithFocusMove();
+
+  await (async function test_setting_designMode() {
+    window.focus();
+    document.designMode = "on";
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+      'test_setting_designMode: IME should be enabled when designMode is set to "on"'
+    );
+    ok(
+      tipWrapper.IMEHasFocus,
+      'test_setting_designMode: IME should have focus when designMode is set to "on"'
+    );
+    document.designMode = "off";
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      'test_setting_designMode: IME should be disabled when designMode is set to "off"'
+    );
+    ok(
+      !tipWrapper.IMEHasFocus,
+      'test_setting_designMode: IME should not have focus when designMode is set to "off"'
+    );
+  })();
+
+  await resetIMEStateWithFocusMove();
+
+  async function test_setting_content_editable_of_body_when_shadow_DOM_has_focus(aMode) {
+    const div = document.querySelector("div");
+    const shadow = div.attachShadow({mode: aMode});
+    const divInShadow = document.createElement("div");
+    divInShadow.setAttribute("tabindex", "0");
+    shadow.appendChild(divInShadow);
+    divInShadow.focus();
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      `test_setting_content_editable_of_body_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should be disabled when non-editable <div> in a shadow DOM has focus`
+    );
+    document.body.setAttribute("contenteditable", "");
+    await waitForIMEContentObserverSendingNotifications();
+    // todo_is because of bug 1807597.  Gecko does not update focus when focused
+    // element becomes an editable child.  Therefore, cannot initialize
+    // HTMLEditor with the new editing host.
+    todo_is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+      `test_setting_content_editable_of_body_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should be enabled when the <body> becomes editable`
+    );
+    todo(
+      tipWrapper.IMEHasFocus,
+      `test_setting_content_editable_of_body_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should have focus when the <body> becomes editable`
+    );
+    document.body.removeAttribute("contenteditable");
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      `test_setting_content_editable_of_body_when_shadow_DOM_has_focus)${
+        aMode
+      }): IME should be disabled when the <body> becomes not editable`
+    );
+    ok(
+      !tipWrapper.IMEHasFocus,
+      `test_setting_content_editable_of_body_when_shadow_DOM_has_focus)${
+        aMode
+      }): IME should not have focus when the <body> becomes not editable`
+    );
+    div.remove();
+    document.body.appendChild(document.createElement("div"));
+  };
+
+  async function test_setting_designMode_when_shadow_DOM_has_focus(aMode) {
+    const div = document.querySelector("div");
+    const shadow = div.attachShadow({mode: aMode});
+    const divInShadow = document.createElement("div");
+    divInShadow.setAttribute("tabindex", "0");
+    shadow.appendChild(divInShadow);
+    divInShadow.focus();
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should be disabled when non-editable <div> in a shadow DOM has focus`
+    );
+    document.designMode = "on";
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should stay disabled when designMode is set`
+    );
+    ok(
+      !tipWrapper.IMEHasFocus,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should not have focus when designMode is set`
+    );
+    divInShadow.setAttribute("contenteditable", "");
+    await waitForIMEContentObserverSendingNotifications();
+    // todo_is because of bug 1807597.  Gecko does not update focus when focused
+    // document is into the design mode.  Therefore, cannot initialize
+    // HTMLEditor with the document node properly.
+    todo_is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_ENABLED,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should be enabled when focused <div> in a shadow DOM becomes editable`
+    );
+    todo(
+      tipWrapper.IMEHasFocus,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should have focus when focused <div> in a shadow DOM becomes editable`
+    );
+    document.designMode = "off";
+    await waitForIMEContentObserverSendingNotifications();
+    is(
+      window.windowUtils.IMEStatus,
+      Ci.nsIDOMWindowUtils.IME_STATUS_DISABLED,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should be disabled when designMode is unset`
+    );
+    ok(
+      !tipWrapper.IMEHasFocus,
+      `test_setting_designMode_when_shadow_DOM_has_focus(${
+        aMode
+      }): IME should not have focus when designMode is unset`
+    );
+    div.remove();
+    document.body.appendChild(document.createElement("div"));
+  }
+
+  for (const mode of ["open", "closed"]) {
+    await test_setting_content_editable_of_body_when_shadow_DOM_has_focus(mode);
+    await resetIMEStateWithFocusMove();
+    await test_setting_designMode_when_shadow_DOM_has_focus(mode);
+    await resetIMEStateWithFocusMove();
+  }
+
+  SimpleTest.finish();
+});
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_ime_state_on_focus_move_in_parent.html b/widget/tests/test_ime_state_on_focus_move_in_parent.html
new file mode 100644
index 0000000000..fd74d61c7e
--- /dev/null
+++ b/widget/tests/test_ime_state_on_focus_move_in_parent.html
@@ -0,0 +1,88 @@
+<!doctype html>
+<html style="ime-mode: disabled;">
+<head>
+  <meta charset="utf-8">
+  <title>Test for IME state management on focus move in parent process</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <script src="file_test_ime_state_on_focus_move.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+</head>
+<body style="ime-mode: disabled;">
+<div style="ime-mode: disabled;"></div>
+<script>
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+/* import-globals-from file_test_ime_state_on_focus_move.js */
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(async () => {
+  const tipWrapper = new TIPWrapper(window);
+  ok(tipWrapper.isAvailable(), "TextInputProcessor should've been initialized");
+
+  const container = document.querySelector("div");
+  async function runIMEStateOnFocusMoveTests(aDescription) {
+    {
+      const runnerAndChecker = new IMEStateWhenNoActiveElementTester(aDescription);
+      const expectedData = await runnerAndChecker.run(document);
+      runnerAndChecker.check(expectedData);
+    }
+    for (let index = 0; index < IMEStateOnFocusMoveTester.numberOfTests; ++index) {
+      const runnerAndChecker = new IMEStateOnFocusMoveTester(aDescription, index);
+      const expectedData = await runnerAndChecker.prepareToRun(container);
+      runnerAndChecker.prepareToCheck(expectedData, tipWrapper);
+      await runnerAndChecker.run();
+      runnerAndChecker.check(expectedData);
+      if (runnerAndChecker.canTestOpenCloseState(expectedData)) {
+        for (const defaultOpenState of [false, true]) {
+          const expectedOpenStateData =
+            await runnerAndChecker.prepareToRunOpenCloseTest(container);
+          runnerAndChecker.prepareToCheckOpenCloseTest(
+            defaultOpenState,
+            expectedOpenStateData
+          );
+          await runnerAndChecker.runOpenCloseTest();
+          runnerAndChecker.checkOpenCloseTest(expectedOpenStateData);
+        }
+      }
+      runnerAndChecker.destroy();
+    }
+  }
+
+  // test for normal contents.
+  await runIMEStateOnFocusMoveTests("in non-editable container");
+
+  // test for contentEditable="true"
+  container.setAttribute("contenteditable", "true");
+  await runIMEStateOnFocusMoveTests("in div[contenteditable]");
+
+  // test for contentEditable="false"
+  container.setAttribute("contenteditable", "false");
+  await runIMEStateOnFocusMoveTests('in div[contenteditable="false"]');
+
+  // test for removing contentEditable
+  container.setAttribute("contenteditable", "true");
+  container.focus();
+  await new Promise(resolve =>
+    requestAnimationFrame(
+      () => requestAnimationFrame(resolve)
+    )
+  );
+  container.removeAttribute("contenteditable");
+  await runIMEStateOnFocusMoveTests("after removing contenteditable from the container");
+
+  // test designMode
+  document.designMode = "on";
+  await runIMEStateOnFocusMoveTests('in designMode="on"');
+  document.designMode = "off";
+  await runIMEStateOnFocusMoveTests('in designMode="off"');
+
+  tipWrapper.destroy();
+
+  SimpleTest.finish();
+});
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_ime_state_on_input_type_change_in_parent.html b/widget/tests/test_ime_state_on_input_type_change_in_parent.html
new file mode 100644
index 0000000000..2644c31e3f
--- /dev/null
+++ b/widget/tests/test_ime_state_on_input_type_change_in_parent.html
@@ -0,0 +1,39 @@
+<html>
+<head>
+  <title>Test for IME state on input type change</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <script src="file_test_ime_state_on_input_type_change.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+<script>
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+/* import-globals-from file_test_ime_state_on_input_type_change.js */
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.expectAssertions(6); // Hit in IMEStateManager::UpdateIMEState
+SimpleTest.waitForFocus(async () => {
+  const tipWrapper = new TIPWrapper(window);
+  for (let srcIndex = 0; srcIndex < IMEStateOnInputTypeChangeTester.numberOfTests; srcIndex++) {
+    const tester = new IMEStateOnInputTypeChangeTester(srcIndex);
+    for (let destIndex = 0; destIndex < IMEStateOnInputTypeChangeTester.numberOfTests; destIndex++) {
+      const expectedResultBefore = await tester.prepareToRun(destIndex, window, document.body);
+      if (expectedResultBefore === false) {
+        continue;
+      }
+      tester.checkBeforeRun(expectedResultBefore, tipWrapper);
+      const expectedResult = await tester.run();
+      tester.checkResult(expectedResultBefore, expectedResult);
+      tipWrapper.clearFocusBlurNotifications();
+      tester.clear();
+    }
+  }
+
+  SimpleTest.finish();
+});
+</script>
+</head>
+<body>
+</body>
+</html>
diff --git a/widget/tests/test_ime_state_on_readonly_change_in_parent.html b/widget/tests/test_ime_state_on_readonly_change_in_parent.html
new file mode 100644
index 0000000000..0557856542
--- /dev/null
+++ b/widget/tests/test_ime_state_on_readonly_change_in_parent.html
@@ -0,0 +1,31 @@
+<html>
+<head>
+  <title>Test for IME state on readonly state change</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <script src="file_test_ime_state_on_readonly_change.js"></script>
+  <link rel="stylesheet" href="chrome://mochikit/content/tests/SimpleTest/test.css">
+<script>
+"use strict";
+
+/* import-globals-from file_ime_state_test_helper.js */
+/* import-globals-from file_test_ime_state_on_readonly_change.js */
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(async () => {
+  const tipWrapper = new TIPWrapper(window);
+  const tester = new IMEStateOnReadonlyChangeTester();
+  for (let i = 0; i < IMEStateOnReadonlyChangeTester.numberOfTextControlTypes; i++) {
+    tester.checkBeforeRun(await tester.prepareToRun(i, window, document.body), tipWrapper);
+    tester.checkResultOfMakingTextControlReadonly(await tester.runToMakeTextControlReadonly());
+    tester.checkResultOfMakingTextControlEditable(await tester.runToMakeTextControlEditable());
+    tipWrapper.clearFocusBlurNotifications();
+    tester.clear();
+  }
+  SimpleTest.finish();
+});
+</script>
+</head>
+<body>
+</body>
+</html>
diff --git a/widget/tests/test_ime_state_others_in_parent.html b/widget/tests/test_ime_state_others_in_parent.html
new file mode 100644
index 0000000000..e6ae0ab272
--- /dev/null
+++ b/widget/tests/test_ime_state_others_in_parent.html
@@ -0,0 +1,153 @@
+<html>
+<head>
+  <title>Test for IME state controlling in some special cases</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+  <script src="file_ime_state_test_helper.js"></script>
+  <link rel="stylesheet" type="text/css"
+          href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+</head>
+<body>
+<div id="display"></div>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<script>
+SimpleTest.waitForExplicitFinish();
+
+var gUtils = window.windowUtils;
+var gFM = Services.focus;
+
+function runEditorFlagChangeTests() {
+  var description = "runEditorFlagChangeTests: ";
+
+  var container = document.getElementById("display");
+
+  // Reset selection from previous tests.
+  window.getSelection().collapse(container, 0);
+
+  // the editor has focus directly.
+  container.setAttribute("contenteditable", "true");
+  container.focus();
+
+  is(gFM.focusedElement, container,
+     description + "The editor doesn't get focus");
+  is(gUtils.IMEStatus, gUtils.IME_STATUS_ENABLED,
+     description + "IME isn't enabled on HTML editor");
+  const kIMEStateChangeFlags = Ci.nsIEditor.eEditorReadonlyMask;
+  const kFlagsNotAllowedWithHTMLEditor =
+    Ci.nsIEditor.eEditorPasswordMask |
+    Ci.nsIEditor.eEditorSingleLineMask;
+  var editor = window.docShell.editor;
+  var flags = editor.flags;
+
+  // input characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3078\u3093\u3057\u3093",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+        ],
+      },
+      "caret": { "start": 4, "length": 0 },
+    });
+
+  editor.flags &= ~kIMEStateChangeFlags;
+  ok(editor.composing,
+     description + "#1 IME composition was committed unexpectedly");
+  is(gUtils.IMEStatus, gUtils.IME_STATUS_ENABLED,
+     description + "#1 IME isn't enabled on HTML editor");
+
+  editor.flags |=
+      ~(kIMEStateChangeFlags | kFlagsNotAllowedWithHTMLEditor);
+  ok(editor.composing,
+     description + "#2 IME composition was committed unexpectedly");
+  is(gUtils.IMEStatus, gUtils.IME_STATUS_ENABLED,
+     description + "#2 IME isn't enabled on HTML editor");
+
+  editor.flags = flags;
+  ok(editor.composing,
+     description + "#3 IME composition was committed unexpectedly");
+  is(gUtils.IMEStatus, gUtils.IME_STATUS_ENABLED,
+     description + "#3 IME isn't enabled on HTML editor");
+
+  // cancel the composition
+  synthesizeComposition({ type: "compositioncommit", data: "" });
+
+  container.removeAttribute("contenteditable");
+}
+
+function runEditableSubframeTests() {
+  window.open("window_imestate_iframes.html", "_blank",
+              "width=600,height=600");
+}
+
+function runTestPasswordFieldOnDialog() {
+  if (document.activeElement) {
+    document.activeElement.blur();
+  }
+
+  var dialog;
+
+  function WindowObserver() {
+    Services.obs.addObserver(this, "domwindowopened");
+  }
+
+  WindowObserver.prototype = {
+    QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
+
+    observe(subject, topic, data) {
+      if (topic === "domwindowopened") {
+        ok(true, "dialog window is created");
+        dialog = subject;
+        dialog.addEventListener("load", onPasswordDialogLoad);
+      }
+    },
+  };
+
+  var observer = new WindowObserver();
+  var arg1 = {}, arg2 = {};
+  Services.prompt.promptPassword(window, "title", "text", arg1, "msg", arg2);
+
+  ok(true, "password dialog was closed");
+
+  Services.obs.removeObserver(observer, "domwindowopened");
+
+  var passwordField;
+
+  function onPasswordDialogLoad() {
+    ok(true, "onPasswordDialogLoad is called");
+    dialog.removeEventListener("load", onPasswordDialogLoad);
+    passwordField = dialog.document.getElementById("password1Textbox");
+    passwordField.addEventListener("focus", onPasswordFieldFocus);
+  }
+
+  function onPasswordFieldFocus() {
+    ok(true, "onPasswordFieldFocus is called");
+    passwordField.removeEventListener("focus", onPasswordFieldFocus);
+    var utils = dialog.windowUtils;
+    is(utils.IMEStatus, utils.IME_STATUS_PASSWORD,
+       "IME isn't disabled on a password field of password dialog");
+    synthesizeKey("VK_ESCAPE", { }, dialog);
+  }
+}
+
+SimpleTest.waitForFocus(async () => {
+  // test whether the IME state and composition are not changed unexpectedly
+  runEditorFlagChangeTests();
+
+  // test password field on dialog
+  // XXX temporary disable against failure
+  // runTestPasswordFieldOnDialog();
+
+  // This will call onFinish(), so, this test must be the last.
+  // TODO: Make this test run with remote content too.
+  runEditableSubframeTests();
+});
+
+function onFinish() {
+  SimpleTest.finish();
+}
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_input_events_on_deactive_window.xhtml b/widget/tests/test_input_events_on_deactive_window.xhtml
new file mode 100644
index 0000000000..d54699f76c
--- /dev/null
+++ b/widget/tests/test_input_events_on_deactive_window.xhtml
@@ -0,0 +1,233 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Testing composition, text and query content events"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+</div>
+<p id="display">
+  <textarea id="textarea"></textarea>
+</p>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(runTests, window);
+
+var textarea = document.getElementById("textarea");
+var otherWindow;
+var timer;
+
+function runTests()
+{
+  textarea.focus();
+  is(Services.focus.focusedElement, textarea, "we're deactive");
+  if (Services.focus.focusedElement != textarea) {
+    SimpleTest.finish();
+    return;
+  }
+
+  otherWindow =
+    window.browsingContext.topChromeWindow.open(
+        "./file_input_events_on_deactive_window.html", "_blank",
+        "chrome,width=100,height=100");
+  ok(otherWindow, "failed to open other window");
+  if (!otherWindow) {
+    SimpleTest.finish();
+    return;
+  }
+
+  SimpleTest.waitForFocus(startTests, otherWindow);
+  otherWindow.focus();
+}
+
+function startTests()
+{
+  clearTimeout(timer);
+  isnot(Services.focus.focusedWindow, window, "we're not deactive");
+  if (Services.focus.focusedWindow == window) {
+    otherWindow.close();
+    SimpleTest.finish();
+    return;
+  }
+
+  var keydownHandled, keypressHandled, keyupHandled, compositionstartHandled,
+      compositionendHandled, compositionupdateHandled, inputHandled;
+
+  function clear()
+  {
+    keydownHandled = false;
+    keypressHandled = false;
+    keyupHandled = false;
+    compositionstartHandled = false;
+    compositionendHandled = false;
+    compositionupdateHandled = false;
+    inputHandled = false;
+  }
+
+  function onEvent(aEvent)
+  {
+    if (aEvent.type == "keydown") {
+      keydownHandled = true;
+    } else if (aEvent.type == "keypress") {
+      keypressHandled = true;
+    } else if (aEvent.type == "keyup") {
+      keyupHandled = true;
+    } else if (aEvent.type == "compositionstart") {
+      compositionstartHandled = true;
+    } else if (aEvent.type == "compositionend") {
+      compositionendHandled = true;
+    } else if (aEvent.type == "compositionupdate") {
+      compositionupdateHandled = true;
+    } else if (aEvent.type == "input") {
+      inputHandled = true;
+    } else {
+      ok(false, "handled unknown event: " + aEvent.type);
+    }
+  }
+
+  textarea.addEventListener("keydown", onEvent);
+  textarea.addEventListener("keypress", onEvent);
+  textarea.addEventListener("keyup", onEvent);
+  textarea.addEventListener("compositionstart", onEvent);
+  textarea.addEventListener("compositionend", onEvent);
+  textarea.addEventListener("compositionupdate", onEvent);
+  textarea.addEventListener("input", onEvent);
+
+  startTestsInternal();
+
+  function startTestsInternal()
+  {
+    // key events
+    function checkKeyEvents(aKeydown, aKeypress, aKeyup, aInput, aDescription)
+    {
+      is(keydownHandled, aKeydown,
+         "keydown event is (not) handled: " + aDescription);
+      is(keypressHandled, aKeypress,
+         "keypress event is (not) handled: " + aDescription);
+      is(keyupHandled, aKeyup,
+         "keyup event is (not) handled: " + aDescription);
+      is(inputHandled, aInput,
+         "input event is (not) handled: " + aDescription);
+    }
+
+    function checkCompositionEvents(aStart, aEnd, aUpdate, aInput, aDescription)
+    {
+      is(compositionstartHandled, aStart,
+         "compositionstart event is (not) handled: " + aDescription);
+      is(compositionendHandled, aEnd,
+         "compositionend event is (not) handled: " + aDescription);
+      is(compositionupdateHandled, aUpdate,
+         "compositionupdate event is (not) handled: " + aDescription);
+      is(inputHandled, aInput,
+         "input event is (not) handled: " + aDescription);
+    }
+
+    clear();
+    synthesizeKey("a", {type: "keydown"});
+    checkKeyEvents(true, true, false, true, "a keydown and a keypress");
+    is(textarea.value, "a", "textarea value isn't 'a'");
+    clear();
+    synthesizeKey("a", {type: "keyup"});
+    checkKeyEvents(false, false, true, false, "a keyup");
+    clear();
+    synthesizeKey("KEY_Backspace");
+    checkKeyEvents(true, true, true, true, "KEY_Backspace key events");
+    is(textarea.value, "", "textarea value isn't empty");
+
+    // IME events
+    clear();
+    // input first character
+    synthesizeCompositionChange(
+      { "composition":
+        { "string": "\u3089",
+          "clauses":
+          [
+            { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+          ]
+        },
+        "caret": { "start": 1, "length": 0 }
+      });
+    checkCompositionEvents(true, false, true, true, "starting to compose");
+    var queryText = synthesizeQueryTextContent(0, 100);
+    ok(queryText, "query text event result is null");
+    if (!queryText) {
+      return;
+    }
+    ok(queryText.succeeded, "query text event failed");
+    if (!queryText.succeeded) {
+      return;
+    }
+    is(queryText.text, "\u3089", "composing text is incorrect");
+    var querySelectedText = synthesizeQuerySelectedText();
+    ok(querySelectedText, "query selected text event result is null");
+    if (!querySelectedText) {
+      return;
+    }
+    ok(querySelectedText.succeeded, "query selected text event failed");
+    if (!querySelectedText.succeeded) {
+      return;
+    }
+    is(querySelectedText.offset, 1,
+       "query selected text event returns wrong offset");
+    is(querySelectedText.text, "",
+       "query selected text event returns wrong selected text");
+    clear();
+    // commit composition
+    synthesizeComposition({ type: "compositioncommitasis" });
+    checkCompositionEvents(false, true, false, true, "commit composition as is");
+    queryText = synthesizeQueryTextContent(0, 100);
+    ok(queryText, "query text event result is null after commit");
+    if (!queryText) {
+      return;
+    }
+    ok(queryText.succeeded, "query text event failed after commit");
+    if (!queryText.succeeded) {
+      return;
+    }
+    is(queryText.text, "\u3089", "composing text is incorrect after commit");
+    querySelectedText = synthesizeQuerySelectedText();
+    ok(querySelectedText,
+       "query selected text event result is null after commit");
+    if (!querySelectedText) {
+      return;
+    }
+    ok(querySelectedText.succeeded,
+       "query selected text event failed after commit");
+    if (!querySelectedText.succeeded) {
+      return;
+    }
+    is(querySelectedText.offset, 1,
+       "query selected text event returns wrong offset after commit");
+    is(querySelectedText.text, "",
+       "query selected text event returns wrong selected text after commit");
+    clear();
+  }
+
+  textarea.removeEventListener("keydown", onEvent);
+  textarea.removeEventListener("keypress", onEvent);
+  textarea.removeEventListener("keyup", onEvent);
+  textarea.removeEventListener("compositionstart", onEvent);
+  textarea.removeEventListener("compositionupdate", onEvent);
+  textarea.removeEventListener("compositionend", onEvent);
+  textarea.removeEventListener("input", onEvent);
+
+  otherWindow.close();
+
+  SimpleTest.finish();
+}
+
+
+]]>
+</script>
+</window>
diff --git a/widget/tests/test_key_event_counts.xhtml b/widget/tests/test_key_event_counts.xhtml
new file mode 100644
index 0000000000..6eda6a52fb
--- /dev/null
+++ b/widget/tests/test_key_event_counts.xhtml
@@ -0,0 +1,90 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<!-- We've had issues on Mac OS X where native key events either don't get processed
+     or they get processed twice. This test tests some of those scenarios. -->
+
+<window id="window1" title="Test Key Event Counts" onload="runTest()"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js"/>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+  <script type="application/javascript"><![CDATA[
+    var gKeyPressEventCount = 0;
+    var gKeyDownEventCount = 0;
+
+    function onKeyDown(e)
+    {
+      gKeyDownEventCount++;
+    }
+
+    function onKeyPress(e)
+    {
+      gKeyPressEventCount++;
+      e.preventDefault();
+    }
+
+    function* testBody()
+    {
+      window.addEventListener("keydown", onKeyDown);
+      window.addEventListener("keypress", onKeyPress);
+
+      // Test ctrl-tab
+      gKeyDownEventCount = 0;
+      gKeyPressEventCount = 0;
+      yield synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_Tab, {ctrlKey:1}, "\t", "\t", continueTest);
+      is(gKeyDownEventCount, 1);
+      is(gKeyPressEventCount, 0, "ctrl-tab should be consumed by tabbox of tabbrowser at keydown");
+
+      // Test cmd+shift+a
+      gKeyDownEventCount = 0;
+      gKeyPressEventCount = 0;
+      yield synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {metaKey:1, shiftKey:1}, "a", "A", continueTest);
+      is(gKeyDownEventCount, 1);
+      is(gKeyPressEventCount, 1);
+
+      // Test cmd-;
+      gKeyDownEventCount = 0;
+      gKeyPressEventCount = 0;
+      yield synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_Semicolon, {metaKey:1}, ";", ";", continueTest);
+      is(gKeyDownEventCount, 1);
+      is(gKeyPressEventCount, 1);
+
+      window.removeEventListener("keydown", onKeyDown);
+      window.removeEventListener("keypress", onKeyPress);
+    }
+
+    var gTestContinuation = null;
+
+    function continueTest()
+    {
+      if (!gTestContinuation) {
+        gTestContinuation = testBody();
+      }
+      var ret = gTestContinuation.next();
+      if (ret.done) {
+        SimpleTest.finish();
+      } else {
+        is(ret.value, true, "Key synthesized successfully");
+      }
+    }
+
+    function runTest()
+    {
+      SimpleTest.waitForExplicitFinish();
+      continueTest();
+    }
+  ]]></script>
+
+</window>
diff --git a/widget/tests/test_keycodes.xhtml b/widget/tests/test_keycodes.xhtml
new file mode 100644
index 0000000000..aea6aaae98
--- /dev/null
+++ b/widget/tests/test_keycodes.xhtml
@@ -0,0 +1,5647 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Key event tests"
+  onload="runTest()"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<commandset>
+  <command id="expectedCommand" oncommand="this.activeCount++" disabled="true"/>
+  <command id="unexpectedCommand" oncommand="this.activeCount++" disabled="true"/>
+  <command id="expectedReservedCommand" oncommand="this.activeCount++" reserved="true" disabled="true"/>
+</commandset>
+<keyset>
+  <key id="unshiftedKey" key=";" modifiers="accel" command="unexpectedCommand"/>
+  <key id="shiftedKey" key=":" modifiers="accel" command="unexpectedCommand"/>
+  <key id="commandOptionF" key='f' modifiers="accel,alt" command="unexpectedCommand"/>
+  <key id="question" key='?' modifiers="accel" command="unexpectedCommand"/>
+  <key id="unshiftedX" key="x" modifiers="accel" command="unexpectedCommand"/>
+  <key id="shiftedX" key="X" modifiers="accel,shift" command="unexpectedCommand"/>
+  <key id="ctrlAltA" key="a" modifiers="accel,alt" command="unexpectedCommand"/>
+  <key id="ctrlAltShiftA" key="A" modifiers="accel,alt,shift" command="unexpectedCommand"/>
+  <key id="unshiftedPlus" key="+" modifiers="accel" command="unexpectedCommand"/>
+  <key id="reservedUnshiftedKey" key="'" modifiers="accel" command="unexpectedCommand"/>
+  <key id="reservedShiftedKey" key='"' modifiers="accel" command="unexpectedCommand"/>
+</keyset>
+
+<browser id="browser" type="content" src="data:text/html;charset=utf-8,&lt;button id='content_button'&gt;button&lt;/button&gt;" width="200" height="32"/>
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display">
+  <!-- for some reason, if we don't have 'accesskey' here, adding it dynamically later
+       doesn't work! -->
+  <button id="button" accesskey="z">Hello</button>
+  <input type="text" id="textbox" value=""/>
+</p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+const IS_MAC = navigator.platform.indexOf("Mac") == 0;
+const IS_WIN = navigator.platform.indexOf("Win") == 0;
+const OS_VERSION =
+  IS_WIN  ? parseFloat(Services.sysinfo.getProperty("version")) : 0;
+const WIN8 = 6.2; // Can remove once bug 1594270 is closed
+
+function isModifierKeyEvent(aEvent)
+{
+  switch (aEvent.key) {
+    case "Alt":
+    case "AltGraph":
+    case "CapsLock":
+    case "Control":
+    case "Fn":
+    case "FnLock":
+    case "Hyper":
+    case "Meta":
+    case "NumLock":
+    case "ScrollLock":
+    case "Shift":
+    case "Super":
+    case "Symbol":
+    case "SymbolLock":
+      return true;
+    default:
+      return false;
+  }
+}
+
+/**
+ * Firefox infobar UI can have access keys which conflict with this test. Really
+ * stupid workaround until we can move this test into its own chrome window.
+ */
+function clearInfobars()
+{
+  var browser = window.top.docShell.chromeEventHandler;
+  var chromeWin = browser.ownerGlobal;
+  var nb = chromeWin.gBrowser.getNotificationBox(browser);
+  for (let n of nb.allNotifications) {
+    nb.removeNotification(n, true);
+  }
+}
+
+function eventToString(aEvent)
+{
+  var name = aEvent.layout.name + " keyCode=" +
+    aEvent.keyCode + " (0x" + aEvent.keyCode.toString(16).toUpperCase() +
+      ") chars='" + aEvent.chars + "'";
+  if (typeof aEvent.unmodifiedChars === "string") {
+    name += " unmodifiedChars='" + aEvent.unmodifiedChars + "'";
+  }
+  if (aEvent.modifiers.capsLockKey) {
+    name += " [CapsLock]";
+  }
+  if (aEvent.modifiers.shiftKey) {
+    name += " [Shift]";
+  }
+  if (aEvent.modifiers.shiftRightKey) {
+    name += " [Right Shift]";
+  }
+  if (aEvent.modifiers.ctrlKey) {
+    name += " [Ctrl]";
+  }
+  if (aEvent.modifiers.ctrlRightKey) {
+    name += " [Right Ctrl]";
+  }
+  if (aEvent.modifiers.altKey) {
+    name += " [Alt]";
+  }
+  if (aEvent.modifiers.altGrKey) {
+    name += " [AltGr]";
+  }
+  if (aEvent.modifiers.altRightKey) {
+    name += " [Right Alt]";
+  }
+  if (aEvent.modifiers.metaKey) {
+    name += ` [${IS_MAC ? "Command" : "Win"}]`;
+  }
+  if (aEvent.modifiers.metaRightKey) {
+    name += ` [Right ${IS_MAC ? "Command" : "Win"}]`;
+  }
+
+  return name;  
+}
+
+function getPhase(aDOMEvent)
+{
+  switch (aDOMEvent.eventPhase) {
+    case aDOMEvent.None:
+      return "none";
+    case aDOMEvent.CAPTURING_PHASE:
+      return "capture";
+    case aDOMEvent.AT_TARGET:
+      return "target";
+    case aDOMEvent.BUBBLING_PHASE:
+      return "bubble";
+    default:
+      return "";
+   }
+}
+
+function eventTargetToString(aEventTarget)
+{
+  if (aEventTarget.navigator) {
+    return "window";
+  }
+  switch (aEventTarget.nodeType) {
+    case Node.ELEMENT_NODE:
+      return "element (" + aEventTarget.tagName + ")";
+    case Node.DOCUMENT_NODE:
+      return "document";
+    default:
+      return "";
+  }
+}
+
+function synthesizeKey(aEvent, aFocusElementId, aCallback)
+{
+  if (aFocusElementId.startsWith("content_")) {
+    var browser = document.getElementById("browser");
+    browser.contentDocument.getElementById(aFocusElementId).focus();
+  } else {
+    document.getElementById(aFocusElementId).focus();
+  }
+
+  return synthesizeNativeKey(aEvent.layout, aEvent.keyCode,
+                             aEvent.modifiers,
+                             aEvent.chars, aEvent.unmodifiedChars,
+                             aCallback);
+}
+
+// Test the charcodes and modifiers being delivered to keypress handlers and
+// also keydown/keyup events too.
+function* runKeyEventTests()
+{
+  var currentTestName;
+  var eventList, keyDownFlags, keyUpFlags, testingEvent, expectedDOMKeyCode;
+  const kShiftFlag    = 0x1;
+  const kCtrlFlag     = 0x2;
+  const kAltFlag      = 0x4;
+  const kMetaFlag     = 0x8;
+  const kNumLockFlag  = 0x10;
+  const kCapsLockFlag = 0x20;
+  const kAltGraphFlag = 0x40;
+
+  function onKeyEvent(e)
+  {
+    /* eslint-disable-next-line no-shadow */
+    function removeFlag(e, aFlag)
+    {
+      if (e.type == "keydown") {
+        let oldValue = keyDownFlags;
+        keyDownFlags &= ~aFlag;
+        return oldValue != keyDownFlags;
+      } else if (e.type == "keyup") {
+        let oldValue = keyUpFlags;
+        keyUpFlags &= ~aFlag;
+        return oldValue != keyUpFlags;
+      }
+      return false;
+    }
+
+    /* eslint-disable-next-line no-shadow, complexity */
+    function isStateChangingModifierKeyEvent(e)
+    {
+      var flags = 0;
+      if (e.type == "keydown") {
+        flags = keyDownFlags ^ keyUpFlags;
+      } else if (e.type == "keyup") {
+        flags = keyUpFlags;
+      }
+      switch (e.key) {
+        case "Shift":
+          is(e.ctrlKey, (flags & kCtrlFlag) != 0,
+             currentTestName + ", Ctrl of Shift " + e.type + " event mismatch");
+          is(e.metaKey, (flags & kMetaFlag) != 0,
+             currentTestName + ", Command of Shift " + e.type + " event mismatch");
+          is(e.altKey, (flags & kAltFlag) != 0,
+             currentTestName + ", Alt of Shift " + e.type + " event mismatch");
+          is(e.shiftKey, e.type == "keydown",
+             currentTestName + ", Shift of Shift " + e.type + " event mismatch");
+          // AltGr on Windows is always pressed after and released before Shift key operation.
+          is(e.getModifierState("AltGraph"), (IS_MAC && e.altKey),
+             currentTestName + ", AltGraph of Shift " + e.type + " event mismatch");
+          return (testingEvent.modifiers.shiftKey || testingEvent.modifiers.shiftRightKey) &&
+                 removeFlag(e, kShiftFlag) && expectedDOMKeyCode != e.keyCode;
+        case "Control":
+          is(e.ctrlKey, e.type == "keydown",
+             currentTestName + ", Ctrl of Ctrl " + e.type + " event mismatch");
+          is(e.metaKey, (flags & kMetaFlag) != 0,
+             currentTestName + ", Command of Ctrl " + e.type + " event mismatch");
+          // When AltGr key is released on Windows, ControlLeft keyup event
+          // is followed by AltRight keyup event.  However, altKey should be
+          // false in such case.
+          is(e.altKey, (flags & kAltFlag) != 0 && !(IS_WIN && !!testingEvent.modifiers.altGrKey),
+             currentTestName + ", Alt of Ctrl " + e.type + " event mismatch");
+          is(e.shiftKey, (flags & kShiftFlag) != 0,
+             currentTestName + ", Shift of Ctrl " + e.type + " event mismatch");
+          is(e.getModifierState("AltGraph"),
+             (IS_WIN && !!testingEvent.modifiers.altGrKey && e.type == "keyup") || (IS_MAC && e.altKey),
+             currentTestName + ", AltGraph of Ctrl " + e.type + " event mismatch");
+          return (testingEvent.modifiers.ctrlKey || testingEvent.modifiers.ctrlRightKey ||
+                  (IS_WIN && !!testingEvent.modifiers.altGrKey)) &&
+                 removeFlag(e, kCtrlFlag) && expectedDOMKeyCode != e.keyCode;
+        case "Alt":
+          is(e.ctrlKey, (flags & kCtrlFlag) != 0 && !(IS_WIN && !!testingEvent.modifiers.altGrKey),
+             currentTestName + ", Ctrl of Alt " + e.type + " event mismatch");
+          is(e.metaKey, (flags & kMetaFlag) != 0,
+             currentTestName + ", Command of Alt " + e.type + " event mismatch");
+          is(e.altKey, e.type == "keydown" && !(IS_WIN && !!testingEvent.modifiers.altGrKey),
+             currentTestName + ", Alt of Alt " + e.type + " event mismatch");
+          is(e.shiftKey, (flags & kShiftFlag) != 0,
+             currentTestName + ", Shift of Alt " + e.type + " event mismatch");
+          is(e.getModifierState("AltGraph"),
+             e.type == "keydown" && ((IS_WIN && !!testingEvent.modifiers.altGrKey) || (IS_MAC && e.altKey)),
+             currentTestName + ", AltGraph of Alt " + e.type + " event mismatch");
+          return (testingEvent.modifiers.altKey || testingEvent.modifiers.altRightKey ||
+                  (IS_WIN && !!testingEvent.modifiers.altGrKey)) &&
+                 removeFlag(e, kAltFlag) && expectedDOMKeyCode != e.keyCode;
+        case "AltGraph":
+          // On Windows, AltGraph events are fired only when AltRight key is
+          // pressed when active keyboard layout maps AltGraph to AltRight.
+          // Note that AltGraph is represented with pressing both Control key
+          // and Alt key.  Therefore, when AltGraph keyboard event is fired,
+          // both ctrlKey and altKey are always false on Windows.
+          is(e.ctrlKey, (flags & kCtrlFlag) != 0 && !IS_WIN,
+             currentTestName + ", Ctrl of AltGraph " + e.type + " event mismatch");
+          is(e.metaKey, (flags & kMetaFlag) != 0,
+             currentTestName + ", Command of AltGraph " + e.type + " event mismatch");
+          is(e.altKey, (flags & kAltFlag) != 0 && !IS_WIN,
+             currentTestName + ", Alt of AltGraph " + e.type + " event mismatch");
+          is(e.shiftKey, (flags & kShiftFlag) != 0,
+             currentTestName + ", Shift of Ctrl " + e.type + " event mismatch");
+          is(e.getModifierState("AltGraph"), e.type === "keydown",
+             currentTestName + ", AltGraph of AltGraph " + e.type + " event mismatch");
+          return IS_WIN && testingEvent.modifiers.altGrKey &&
+                 removeFlag(e, kAltGraphFlag) && expectedDOMKeyCode != e.keyCode;
+        case "Meta":
+          is(e.ctrlKey, (flags & kCtrlFlag) != 0,
+             currentTestName + ", Ctrl of Command " + e.type + " event mismatch");
+          is(e.metaKey, e.type == "keydown",
+             currentTestName + ", Command of Command " + e.type + " event mismatch");
+          is(e.altKey, (flags & kAltFlag) != 0,
+             currentTestName + ", Alt of Command " + e.type + " event mismatch");
+          is(e.shiftKey, (flags & kShiftFlag) != 0,
+             currentTestName + ", Shift of Command " + e.type + " event mismatch");
+          is(e.getModifierState("AltGraph"),
+             (IS_WIN && (flags & kAltGraphFlag) != 0) || (IS_MAC && e.altKey),
+             currentTestName + ", AltGraph of Meta " + e.type + " event mismatch");
+          return (testingEvent.modifiers.metaKey || testingEvent.modifiers.metaRightKey) &&
+                 removeFlag(e, kMetaFlag) && expectedDOMKeyCode != e.keyCode;
+        case "NumLock":
+          is(e.ctrlKey, (flags & kCtrlFlag) != 0,
+             currentTestName + ", Ctrl of NumLock " + e.type + " event mismatch");
+          is(e.metaKey, (flags & kMetaFlag) != 0,
+             currentTestName + ", Command of NumLock " + e.type + " event mismatch");
+          is(e.altKey, (flags & kAltFlag) != 0,
+             currentTestName + ", Alt of NumLock " + e.type + " event mismatch");
+          is(e.shiftKey, (flags & kShiftFlag) != 0,
+             currentTestName + ", Shift of NumLock " + e.type + " event mismatch");
+          is(e.getModifierState("AltGraph"), false,
+             currentTestName + ", AltGraph of NumLock " + e.type + " event mismatch");
+          // AltGr on Windows is always pressed after and released before NumLock key operation.
+          return (testingEvent.modifiers.numLockKey || testingEvent.modifiers.numericKeyPadKey) &&
+                 removeFlag(e, kNumLockFlag) && expectedDOMKeyCode != e.keyCode;
+        case "CapsLock":
+          is(e.ctrlKey, (flags & kCtrlFlag) != 0,
+             currentTestName + ", Ctrl of CapsLock " + e.type + " event mismatch");
+          is(e.metaKey, (flags & kMetaFlag) != 0,
+             currentTestName + ", Command of CapsLock " + e.type + " event mismatch");
+          is(e.altKey, (flags & kAltFlag) != 0,
+             currentTestName + ", Alt of CapsLock " + e.type + " event mismatch");
+          is(e.shiftKey, (flags & kShiftFlag) != 0,
+             currentTestName + ", Shift of CapsLock " + e.type + " event mismatch");
+          // AltGr on Windows is always pressed after and released before CapsLock key operation.
+          is(e.getModifierState("AltGraph"), false,
+             currentTestName + ", AltGraph of CapsLock " + e.type + " event mismatch");
+          return testingEvent.modifiers.capsLockKey &&
+                 removeFlag(e, kCapsLockFlag) && expectedDOMKeyCode != e.keyCode;
+      }
+      return false;
+    }
+
+    // Ignore the state changing key events which is fired by the testing event.
+    if (!isStateChangingModifierKeyEvent(e))
+      eventList.push(e);
+  }
+
+  function consumer(aEvent)
+  {
+    aEvent.preventDefault();
+  }
+
+  const SHOULD_DELIVER_KEYDOWN          = 0x1;
+  const SHOULD_DELIVER_KEYPRESS         = 0x2;
+  const SHOULD_DELIVER_KEYUP            = 0x4;
+  const SHOULD_DELIVER_ALL              = SHOULD_DELIVER_KEYDOWN |
+                                          SHOULD_DELIVER_KEYPRESS |
+                                          SHOULD_DELIVER_KEYUP;
+  const SHOULD_DELIVER_KEYDOWN_KEYUP    = SHOULD_DELIVER_KEYDOWN |
+                                          SHOULD_DELIVER_KEYUP;
+  const SHOULD_DELIVER_KEYDOWN_KEYPRESS = SHOULD_DELIVER_KEYDOWN |
+                                          SHOULD_DELIVER_KEYPRESS;
+
+  // The first parameter is the complete input event. The second parameter is
+  // what to test against. The third parameter is which key events should be
+  // delived for the event.
+  // @param aExpectedKeyValues     Can be string or array of string.
+  //                               If all keyboard events have same key value,
+  //                               specify it as string.  Otherwise, specify
+  //                               each key value in array.
+  function testKey(aEvent, aExpectedKeyValues, aExpectedCodeValue,
+                   aExpectedGeckoKeyCode, aExpectGeckoChar,
+                   aShouldDelivedEvent, aExpectLocation)
+  {
+    ok(aExpectedGeckoKeyCode != undefined, "keycode is undefined");
+    eventList = [];
+
+    // The modifier key events which are fired for state changing are har to
+    // test. We should ignore them for now.
+    keyDownFlags = keyUpFlags = 0;
+    if (!IS_MAC) {
+      // On Mac, nsChildView doesn't generate modifier keydown/keyup events for
+      // state changing for synthesizeNativeKeyEvent.
+      if (aEvent.modifiers.shiftKey || aEvent.modifiers.shiftRightKey) {
+        keyDownFlags |= kShiftFlag;
+      }
+      if (aEvent.modifiers.ctrlKey || aEvent.modifiers.ctrlRightKey ||
+          (IS_WIN && aEvent.modifiers.altGrKey)) {
+        keyDownFlags |= kCtrlFlag;
+      }
+      if (aEvent.modifiers.altKey || aEvent.modifiers.altRightKey) {
+        keyDownFlags |= kAltFlag;
+      }
+      if (aEvent.modifiers.altGrKey) {
+        keyDownFlags |= kAltGraphFlag;
+      }
+      if (aEvent.modifiers.metaKey || aEvent.modifiers.metaRightKey) {
+        keyDownFlags |= kMetaFlag;
+      }
+      if (aEvent.modifiers.numLockKey || aEvent.modifiers.numericKeyPadKey) {
+        keyDownFlags |= kNumLockFlag;
+      }
+      if (aEvent.modifiers.capsLockKey) {
+        keyDownFlags |= kCapsLockFlag;
+      }
+      keyUpFlags = keyDownFlags;
+    }
+
+    testingEvent = aEvent;
+    expectedDOMKeyCode = aExpectedGeckoKeyCode;
+
+    currentTestName = eventToString(aEvent);
+    ok(true, "Starting: " + currentTestName);
+
+    // eslint-disable-next-line complexity
+    return synthesizeKey(aEvent, "button", function() {
+
+      var expectEventTypeList = [];
+      if (aShouldDelivedEvent & SHOULD_DELIVER_KEYDOWN)
+        expectEventTypeList.push("keydown");
+      if (aShouldDelivedEvent & SHOULD_DELIVER_KEYPRESS) {
+        expectEventTypeList.push("keypress");
+        for (let i = 1; i < aExpectGeckoChar.length; i++) {
+          expectEventTypeList.push("keypress");
+        }
+      }
+      if (aShouldDelivedEvent & SHOULD_DELIVER_KEYUP)
+        expectEventTypeList.push("keyup");
+      is(eventList.length, expectEventTypeList.length,
+         currentTestName + ", wrong number of key events");
+
+      var longerLength = Math.max(eventList.length, expectEventTypeList.length);
+      var keypressCount = 0;
+      for (let i = 0; i < longerLength; i++) {
+        var firedEventType = i < eventList.length ? eventList[i].type : "";
+        var expectEventType = i < expectEventTypeList.length ? expectEventTypeList[i] : "";
+        if (firedEventType != "") {
+          is(firedEventType, expectEventType,
+             currentTestName + ", " + expectEventType + " should be fired");
+        } else {
+          is(firedEventType, expectEventType,
+             currentTestName + ", a needed event is not fired");
+        }
+
+        if (firedEventType != "") {
+          var expectedKeyValue =
+            // eslint-disable-next-line no-nested-ternary
+            typeof aExpectedKeyValues === "string" ? aExpectedKeyValues :
+                     i < aExpectedKeyValues.length ? aExpectedKeyValues[i] :
+                                                     undefined;
+
+          var e = eventList[i];
+          switch (e.key) {
+            case "Shift":
+            case "Control":
+            case "Alt":
+            case "AltGraph":
+            case "Meta":
+            case "CapsLock":
+            case "NumLock":
+              // XXX To check modifier state of modifiers, we need to check
+              //     e.type since modifier key may change modifier state.
+              //     However, doing it makes the following check more
+              //     complicated.  So, we ignore the modifier state of
+              //     modifier keydown/keyup events for now.
+              break;
+            default:
+              is(e.shiftKey, !!(aEvent.modifiers.shiftKey || aEvent.modifiers.shiftRightKey),
+                 currentTestName + ", Shift of " + e.type + " of " + e.code + " mismatch");
+              is(e.metaKey, !!(aEvent.modifiers.metaKey || aEvent.modifiers.metaRightKey),
+                 currentTestName + ", Meta of " + e.type + " of " + e.code + " mismatch");
+              var isControlPressed = !!(aEvent.modifiers.ctrlKey || aEvent.modifiers.ctrlRightKey);
+              var isAltPressed = !!(aEvent.modifiers.altKey || aEvent.modifiers.altRightKey);
+              var isAltGraphExpected =
+                !!aEvent.modifiers.altGrKey ||
+                (IS_WIN && aEvent.layout.hasAltGrOnWin &&
+                 isControlPressed && isAltPressed &&
+                 (aEvent.isInputtingCharacters || expectedKeyValue == "Dead")) ||
+                (IS_MAC && isAltPressed);
+              var isControlExpected = !(IS_WIN && isAltGraphExpected) && isControlPressed;
+              var isAltExpected = !(IS_WIN && isAltGraphExpected) && isAltPressed;
+              if (e.type == "keypress" && aEvent.isInputtingCharacters) {
+                isControlExpected = false;
+                isAltExpected = false;
+              }
+              is(e.ctrlKey, isControlExpected,
+                 currentTestName + ", Ctrl of " + e.type + " of " + e.code + " mismatch");
+              is(e.altKey, isAltExpected,
+                 currentTestName + ", Alt of " + e.type + " of " + e.code + " mismatch");
+              is(e.getModifierState("AltGraph"), isAltGraphExpected,
+                 currentTestName + ", AltGraph of " + e.type + " of " + e.code + " mismatch");
+              break;
+          }
+
+          is(e.key, expectedKeyValue, currentTestName + ", wrong key value");
+          is(e.code, aExpectedCodeValue, currentTestName + ", wrong code value");
+
+          if (aExpectGeckoChar.length && e.type == "keypress") {
+            is(e.charCode, aExpectGeckoChar.charCodeAt(keypressCount++),
+               currentTestName + ", charcode");
+            if (aExpectedGeckoKeyCode >= 0) {
+              if (aExpectGeckoChar) {
+                is(e.keyCode, 0,
+                   currentTestName + ", wrong keycode");
+              } else {
+                is(e.keyCode, aExpectedGeckoKeyCode,
+                   currentTestName + ", wrong keycode");
+              }
+            }
+          } else {
+            is(e.charCode, 0,
+               currentTestName + ", no charcode");
+            if (aExpectedGeckoKeyCode >= 0) {
+              is(e.keyCode, aExpectedGeckoKeyCode,
+                 currentTestName + ", wrong keycode");
+            }
+          }
+          is(e.location, aExpectLocation,
+             currentTestName + ", wrong location");
+        }
+      }
+
+      continueTest();
+    });
+  }
+
+  // These tests have to be per-plaform.
+  document.addEventListener("keydown",  onKeyEvent);
+  document.addEventListener("keypress", onKeyEvent);
+  document.addEventListener("keyup",    onKeyEvent);
+  // Prevent almost all shortcut key handlers.
+  SpecialPowers.addSystemEventListener(document, "keypress", consumer, true);
+
+  function cleanup()
+  {
+    document.removeEventListener("keydown",  onKeyEvent);
+    document.removeEventListener("keypress", onKeyEvent);
+    document.removeEventListener("keyup",    onKeyEvent);
+    SpecialPowers.removeSystemEventListener(document, "keypress", consumer, true);
+  }
+
+  function* testKeysOnMac()
+  {
+    // On Mac, you can produce event records for any desired keyboard input
+    // by running with NSPR_LOG_MODULES=TextInputHandlerWidgets:5 and typing
+    // into the browser.  We will dump the key event fields to the console
+    // (Find TextInputHandler::HandleKeyDownEvent or
+    // TextInputHandler::HandleKeyUpEvent in the log). Use the International system
+    // preferences widget to enable other keyboard layouts and select them from the
+    // input menu to see what keyboard events they generate.
+    // Note that it's possible to send bogus key events here, e.g.
+    // {keyCode:0, chars:"z", unmodifiedChars:"P"} --- sendNativeKeyEvent
+    // makes no attempt to verify that the keyCode matches the characters. So only
+    // test key event records that you saw Cocoa send.
+
+    // Command keys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1}, chars:"a", unmodifiedChars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Shift-cmd gives us the shifted character
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"a", unmodifiedChars:"A"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Ctrl-cmd gives us the unshifted character
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, ctrlKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Alt-cmd gives us the shifted character
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, altKey:1}, chars:"\u00e5", unmodifiedChars:"a"},
+                  "\u00e5", "KeyA", KeyboardEvent.DOM_VK_A, "\u00e5", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, altKey:1, shiftKey:1}, chars:"\u00c5", unmodifiedChars:"a"},
+                  "\u00c5", "KeyA", KeyboardEvent.DOM_VK_A, "\u00c5", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Greek ctrl keys produce Latin charcodes
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1}, chars:"\u0001", unmodifiedChars:"\u03b1"},
+                  "\u03b1", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0001", unmodifiedChars:"\u0391"},
+                  "\u0391", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Greek command keys
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1}, chars:"a", unmodifiedChars:"\u03b1"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Shift-cmd gives us the shifted character
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"a", unmodifiedChars:"\u0391"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Ctrl-cmd gives us the unshifted character
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, ctrlKey:1}, chars:"\u0001", unmodifiedChars:"\u03b1"},
+                  "\u03b1", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Alt-cmd gives us the shifted character
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, altKey:1}, chars:"\u00a8", unmodifiedChars:"\u03b1"},
+                  "\u00a8", "KeyA", KeyboardEvent.DOM_VK_A, "\u00a8", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1, altKey:1, shiftKey:1}, chars:"\u00b9", unmodifiedChars:"\u0391"},
+                  "\u00b9", "KeyA", KeyboardEvent.DOM_VK_A, "\u00b9", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // German
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_A,
+                   modifiers: {}, chars:"a", unmodifiedChars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers: {}, chars:"\u00fc", unmodifiedChars:"\u00fc"},
+                  "\u00fc", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u00fc", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers: {}, chars:"\u00df", unmodifiedChars:"\u00df"},
+                  "\u00df", "Minus", KeyboardEvent.DOM_VK_QUESTION_MARK, "\u00df", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{shiftKey:1}, chars:"?", unmodifiedChars:"?"},
+                  "?", "Minus", KeyboardEvent.DOM_VK_QUESTION_MARK, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Note that Shift+SS is '?' but Cmd+Shift+SS is '/' on German layout.
+    // Therefore, when Cmd key is pressed, the SS key's keycode is changed.
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{metaKey:1}, chars:"\u00df", unmodifiedChars:"\u00df"},
+                  "\u00df", "Minus", KeyboardEvent.DOM_VK_SLASH, "\u00df", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"?"},
+                  "/", "Minus", KeyboardEvent.DOM_VK_SLASH, "?", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Caps Lock key event
+    // XXX keyup event of Caps Lock key is not fired.
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_CapsLock,
+                   modifiers:{capsLockKey:1}, chars:"", unmodifiedChars:""},
+                  "CapsLock", "CapsLock", KeyboardEvent.DOM_VK_CAPS_LOCK, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_CapsLock,
+                   modifiers:{capsLockKey:0}, chars:"", unmodifiedChars:""},
+                  "CapsLock", "CapsLock", KeyboardEvent.DOM_VK_CAPS_LOCK, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Shift/RightShift key event
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Shift,
+                   modifiers:{shiftKey:1}, chars:"", unmodifiedChars:""},
+                  "Shift", "ShiftLeft", KeyboardEvent.DOM_VK_SHIFT, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Shift,
+                   modifiers:{shiftKey:0}, chars:"", unmodifiedChars:""},
+                  "Shift", "ShiftLeft", KeyboardEvent.DOM_VK_SHIFT, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightShift,
+                   modifiers:{shiftRightKey:1}, chars:"", unmodifiedChars:""},
+                  "Shift", "ShiftRight", KeyboardEvent.DOM_VK_SHIFT, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightShift,
+                   modifiers:{shiftRightKey:0}, chars:"", unmodifiedChars:""},
+                  "Shift", "ShiftRight", KeyboardEvent.DOM_VK_SHIFT, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // Control/RightControl key event
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Control,
+                   modifiers:{ctrlKey:1}, chars:"", unmodifiedChars:""},
+                  "Control", "ControlLeft", KeyboardEvent.DOM_VK_CONTROL, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Control,
+                   modifiers:{ctrlKey:0}, chars:"", unmodifiedChars:""},
+                  "Control", "ControlLeft", KeyboardEvent.DOM_VK_CONTROL, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightControl,
+                   modifiers:{ctrlRightKey:1}, chars:"", unmodifiedChars:""},
+                  "Control", "ControlRight", KeyboardEvent.DOM_VK_CONTROL, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightControl,
+                   modifiers:{ctrlRightKey:0}, chars:"", unmodifiedChars:""},
+                  "Control", "ControlRight", KeyboardEvent.DOM_VK_CONTROL, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // Option/RightOption key event
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Option,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:""},
+                  "Alt", "AltLeft", KeyboardEvent.DOM_VK_ALT, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Option,
+                   modifiers:{altKey:0}, chars:"", unmodifiedChars:""},
+                  "Alt", "AltLeft", KeyboardEvent.DOM_VK_ALT, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightOption,
+                   modifiers:{altRightKey:1}, chars:"", unmodifiedChars:""},
+                  "Alt", "AltRight", KeyboardEvent.DOM_VK_ALT, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightOption,
+                   modifiers:{altRightKey:0}, chars:"", unmodifiedChars:""},
+                  "Alt", "AltRight", KeyboardEvent.DOM_VK_ALT, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // Command/RightCommand key event
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Command,
+                   modifiers:{metaKey:1}, chars:"", unmodifiedChars:""},
+                  "Meta", "MetaLeft", KeyboardEvent.DOM_VK_META, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Command,
+                   modifiers:{metaKey:0}, chars:"", unmodifiedChars:""},
+                  "Meta", "MetaLeft", KeyboardEvent.DOM_VK_META, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightCommand,
+                   modifiers:{metaRightKey:1}, chars:"", unmodifiedChars:""},
+                  "Meta", "MetaRight", KeyboardEvent.DOM_VK_META, "", SHOULD_DELIVER_KEYDOWN, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightCommand,
+                   modifiers:{metaRightKey:0}, chars:"", unmodifiedChars:""},
+                  "Meta", "MetaRight", KeyboardEvent.DOM_VK_META, "", SHOULD_DELIVER_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // all keys on keyboard (keyCode test)
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Tab,
+                   modifiers: {}, chars:"\t", unmodifiedChars:"\t"},
+                  "Tab", "Tab", KeyboardEvent.DOM_VK_TAB, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadClear,
+                   modifiers: {}, chars:"\uF739", unmodifiedChars:"\uF739"},
+                  "Clear", "NumLock", KeyboardEvent.DOM_VK_CLEAR, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Return,
+                   modifiers: {}, chars:"\u000D", unmodifiedChars:"\u000D"},
+                  "Enter", "Enter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PC_Pause,
+                   modifiers: {}, chars:"\uF712", unmodifiedChars:"\uF712"},
+                  "F15", "F15", KeyboardEvent.DOM_VK_PAUSE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Escape,
+                   modifiers: {}, chars:"\u001B", unmodifiedChars:"\u001B"},
+                  "Escape", "Escape", KeyboardEvent.DOM_VK_ESCAPE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Space,
+                   modifiers: {}, chars:" ", unmodifiedChars:" "},
+                  " ", "Space", KeyboardEvent.DOM_VK_SPACE, " ", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PageUp,
+                   modifiers: {}, chars:"\uF72C", unmodifiedChars:"\uF72C"},
+                  "PageUp", "PageUp", KeyboardEvent.DOM_VK_PAGE_UP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PageDown,
+                   modifiers: {}, chars:"\uF72D", unmodifiedChars:"\uF72D"},
+                  "PageDown", "PageDown", KeyboardEvent.DOM_VK_PAGE_DOWN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_End,
+                   modifiers: {}, chars:"\uF72B", unmodifiedChars:"\uF72B"},
+                  "End", "End", KeyboardEvent.DOM_VK_END, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_Home,
+                   modifiers: {}, chars:"\uF729", unmodifiedChars:"\uF729"},
+                  "Home", "Home", KeyboardEvent.DOM_VK_HOME, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_LeftArrow,
+                   modifiers: {}, chars:"\uF702", unmodifiedChars:"\uF702"},
+                  "ArrowLeft", "ArrowLeft", KeyboardEvent.DOM_VK_LEFT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_UpArrow,
+                   modifiers: {}, chars:"\uF700", unmodifiedChars:"\uF700"},
+                  "ArrowUp", "ArrowUp", KeyboardEvent.DOM_VK_UP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_RightArrow,
+                   modifiers: {}, chars:"\uF703", unmodifiedChars:"\uF703"},
+                  "ArrowRight", "ArrowRight", KeyboardEvent.DOM_VK_RIGHT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_DownArrow,
+                   modifiers: {}, chars:"\uF701", unmodifiedChars:"\uF701"},
+                  "ArrowDown", "ArrowDown", KeyboardEvent.DOM_VK_DOWN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PC_PrintScreen,
+                   modifiers: {}, chars:"\uF710", unmodifiedChars:"\uF710"},
+                  "F13", "F13", KeyboardEvent.DOM_VK_PRINTSCREEN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PC_Delete,
+                   modifiers: {}, chars:"\uF728", unmodifiedChars:"\uF728"},
+                  "Delete", "Delete", KeyboardEvent.DOM_VK_DELETE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PC_ScrollLock,
+                   modifiers: {}, chars:"\uF711", unmodifiedChars:"\uF711"},
+                  "F14", "F14", KeyboardEvent.DOM_VK_SCROLL_LOCK, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_PC_ContextMenu,
+                   modifiers: {}, chars:"\u0010", unmodifiedChars:"\u0010"},
+                  "ContextMenu", "ContextMenu", KeyboardEvent.DOM_VK_CONTEXT_MENU, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F1,
+                   modifiers:{fnKey:1}, chars:"\uF704", unmodifiedChars:"\uF704"},
+                  "F1", "F1", KeyboardEvent.DOM_VK_F1, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F2,
+                   modifiers:{fnKey:1}, chars:"\uF705", unmodifiedChars:"\uF705"},
+                  "F2", "F2", KeyboardEvent.DOM_VK_F2, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F3,
+                   modifiers:{fnKey:1}, chars:"\uF706", unmodifiedChars:"\uF706"},
+                  "F3", "F3", KeyboardEvent.DOM_VK_F3, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F4,
+                   modifiers:{fnKey:1}, chars:"\uF707", unmodifiedChars:"\uF707"},
+                  "F4", "F4", KeyboardEvent.DOM_VK_F4, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F5,
+                   modifiers:{fnKey:1}, chars:"\uF708", unmodifiedChars:"\uF708"},
+                  "F5", "F5", KeyboardEvent.DOM_VK_F5, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F6,
+                   modifiers:{fnKey:1}, chars:"\uF709", unmodifiedChars:"\uF709"},
+                  "F6", "F6", KeyboardEvent.DOM_VK_F6, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F7,
+                   modifiers:{fnKey:1}, chars:"\uF70A", unmodifiedChars:"\uF70A"},
+                  "F7", "F7", KeyboardEvent.DOM_VK_F7, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F8,
+                   modifiers:{fnKey:1}, chars:"\uF70B", unmodifiedChars:"\uF70B"},
+                  "F8", "F8", KeyboardEvent.DOM_VK_F8, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F9,
+                   modifiers:{fnKey:1}, chars:"\uF70C", unmodifiedChars:"\uF70C"},
+                  "F9", "F9", KeyboardEvent.DOM_VK_F9, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F10,
+                   modifiers:{fnKey:1}, chars:"\uF70D", unmodifiedChars:"\uF70D"},
+                  "F10", "F10", KeyboardEvent.DOM_VK_F10, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F11,
+                   modifiers:{fnKey:1}, chars:"\uF70E", unmodifiedChars:"\uF70E"},
+                  "F11", "F11", KeyboardEvent.DOM_VK_F11, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F12,
+                   modifiers:{fnKey:1}, chars:"\uF70F", unmodifiedChars:"\uF70F"},
+                  "F12", "F12", KeyboardEvent.DOM_VK_F12, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F16,
+                   modifiers:{fnKey:1}, chars:"\uF713", unmodifiedChars:"\uF713"},
+                  "F16", "F16", KeyboardEvent.DOM_VK_F16, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F17,
+                   modifiers:{fnKey:1}, chars:"\uF714", unmodifiedChars:"\uF714"},
+                  "F17", "F17", KeyboardEvent.DOM_VK_F17, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F18,
+                   modifiers:{fnKey:1}, chars:"\uF715", unmodifiedChars:"\uF715"},
+                  "F18", "F18", KeyboardEvent.DOM_VK_F18, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_F19,
+                   modifiers:{fnKey:1}, chars:"\uF716", unmodifiedChars:"\uF716"},
+                  "F19", "F19", KeyboardEvent.DOM_VK_F19, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // US
+    // Alphabet
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers: {}, chars:"a", unmodifiedChars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{shiftKey:1}, chars:"A", unmodifiedChars:"A"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0001", unmodifiedChars:"A"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, capsLockKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, shiftKey:1, capsLockKey:1}, chars:"\u0001", unmodifiedChars:"A"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{altKey:1}, chars:"\u00E5", unmodifiedChars:"a"},
+                  "\u00E5", "KeyA", KeyboardEvent.DOM_VK_A, "\u00E5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C5", unmodifiedChars:"A"},
+                  "\u00C5", "KeyA", KeyboardEvent.DOM_VK_A, "\u00C5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "\u00E5", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0001", unmodifiedChars:"A"},
+                  "\u00C5", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{metaKey:1}, chars:"a", unmodifiedChars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{}, chars:"b", unmodifiedChars:"b"},
+                  "b", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{shiftKey:1}, chars:"B", unmodifiedChars:"B"},
+                  "B", "KeyB", KeyboardEvent.DOM_VK_B, "B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{ctrlKey:1}, chars:"\u0002", unmodifiedChars:"b"},
+                  "b", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0002", unmodifiedChars:"B"},
+                  "B", "KeyB", KeyboardEvent.DOM_VK_B, "B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{altKey:1}, chars:"\u222B", unmodifiedChars:"b"},
+                  "\u222B", "KeyB", KeyboardEvent.DOM_VK_B, "\u222B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u0131", unmodifiedChars:"B"},
+                  "\u0131", "KeyB", KeyboardEvent.DOM_VK_B, "\u0131", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0002", unmodifiedChars:"b"},
+                  "\u222B", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0002", unmodifiedChars:"B"},
+                  "\u0131", "KeyB", KeyboardEvent.DOM_VK_B, "B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{metaKey:1}, chars:"b", unmodifiedChars:"b"},
+                  "b", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{}, chars:"c", unmodifiedChars:"c"},
+                  "c", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{shiftKey:1}, chars:"C", unmodifiedChars:"C"},
+                  "C", "KeyC", KeyboardEvent.DOM_VK_C, "C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{ctrlKey:1}, chars:"\u0003", unmodifiedChars:"c"},
+                  "c", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0003", unmodifiedChars:"C"},
+                  "C", "KeyC", KeyboardEvent.DOM_VK_C, "C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{altKey:1}, chars:"\u00E7", unmodifiedChars:"c"},
+                  "\u00E7", "KeyC", KeyboardEvent.DOM_VK_C, "\u00E7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C7", unmodifiedChars:"C"},
+                  "\u00C7", "KeyC", KeyboardEvent.DOM_VK_C, "\u00C7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0003", unmodifiedChars:"c"},
+                  "\u00E7", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0003", unmodifiedChars:"C"},
+                  "\u00C7", "KeyC", KeyboardEvent.DOM_VK_C, "C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_C,
+                   modifiers:{metaKey:1}, chars:"c", unmodifiedChars:"c"},
+                  "c", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{}, chars:"d", unmodifiedChars:"d"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{shiftKey:1}, chars:"D", unmodifiedChars:"D"},
+                  "D", "KeyD", KeyboardEvent.DOM_VK_D, "D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{ctrlKey:1}, chars:"\u0004", unmodifiedChars:"d"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0004", unmodifiedChars:"D"},
+                  "D", "KeyD", KeyboardEvent.DOM_VK_D, "D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{altKey:1}, chars:"\u2202", unmodifiedChars:"d"},
+                  "\u2202", "KeyD", KeyboardEvent.DOM_VK_D, "\u2202", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00CE", unmodifiedChars:"D"},
+                  "\u00CE", "KeyD", KeyboardEvent.DOM_VK_D, "\u00CE", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0004", unmodifiedChars:"d"},
+                  "\u2202", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0004", unmodifiedChars:"D"},
+                  "\u00CE", "KeyD", KeyboardEvent.DOM_VK_D, "D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{metaKey:1}, chars:"d", unmodifiedChars:"d"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{}, chars:"e", unmodifiedChars:"e"},
+                  "e", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{shiftKey:1}, chars:"E", unmodifiedChars:"E"},
+                  "E", "KeyE", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{ctrlKey:1}, chars:"\u0005", unmodifiedChars:"e"},
+                  "e", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0005", unmodifiedChars:"E"},
+                  "E", "KeyE", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:"e"},
+                  "Dead", "KeyE", KeyboardEvent.DOM_VK_E, "\u00B4", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // dead key
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00B4", unmodifiedChars:"E"},
+                  "\u00B4", "KeyE", KeyboardEvent.DOM_VK_E, "\u00B4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0005", unmodifiedChars:"e"},
+                  "Dead", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0005", unmodifiedChars:"E"},
+                  "\u00B4", "KeyE", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_E,
+                   modifiers:{metaKey:1}, chars:"e", unmodifiedChars:"e"},
+                  "e", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{}, chars:"f", unmodifiedChars:"f"},
+                  "f", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{shiftKey:1}, chars:"F", unmodifiedChars:"F"},
+                  "F", "KeyF", KeyboardEvent.DOM_VK_F, "F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{ctrlKey:1}, chars:"\u0006", unmodifiedChars:"f"},
+                  "f", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0006", unmodifiedChars:"F"},
+                  "F", "KeyF", KeyboardEvent.DOM_VK_F, "F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{altKey:1}, chars:"\u0192", unmodifiedChars:"f"},
+                  "\u0192", "KeyF", KeyboardEvent.DOM_VK_F, "\u0192", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00CF", unmodifiedChars:"F"},
+                  "\u00CF", "KeyF", KeyboardEvent.DOM_VK_F, "\u00CF", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0006", unmodifiedChars:"f"},
+                  "\u0192", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0006", unmodifiedChars:"F"},
+                  "\u00CF", "KeyF", KeyboardEvent.DOM_VK_F, "F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // XXX This test starts fullscreen mode.
+    // yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+    //                modifiers:{metaKey:1}, chars:"f", unmodifiedChars:"f"},
+    //               "f", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{}, chars:"g", unmodifiedChars:"g"},
+                  "g", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{shiftKey:1}, chars:"G", unmodifiedChars:"G"},
+                  "G", "KeyG", KeyboardEvent.DOM_VK_G, "G", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{ctrlKey:1}, chars:"\u0007", unmodifiedChars:"g"},
+                  "g", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0007", unmodifiedChars:"G"},
+                  "G", "KeyG", KeyboardEvent.DOM_VK_G, "G", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{altKey:1}, chars:"\u00A9", unmodifiedChars:"g"},
+                  "\u00A9", "KeyG", KeyboardEvent.DOM_VK_G, "\u00A9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u02DD", unmodifiedChars:"G"},
+                  "\u02DD", "KeyG", KeyboardEvent.DOM_VK_G, "\u02DD", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0007", unmodifiedChars:"g"},
+                  "\u00A9", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0007", unmodifiedChars:"G"},
+                  "\u02DD", "KeyG", KeyboardEvent.DOM_VK_G, "G", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{metaKey:1}, chars:"g", unmodifiedChars:"g"},
+                  "g", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{}, chars:"h", unmodifiedChars:"h"},
+                  "h", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{shiftKey:1}, chars:"H", unmodifiedChars:"H"},
+                  "H", "KeyH", KeyboardEvent.DOM_VK_H, "H", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{ctrlKey:1}, chars:"\u0008", unmodifiedChars:"h"},
+                  "h", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0008", unmodifiedChars:"H"},
+                  "H", "KeyH", KeyboardEvent.DOM_VK_H, "H", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{altKey:1}, chars:"\u02D9", unmodifiedChars:"h"},
+                  "\u02D9", "KeyH", KeyboardEvent.DOM_VK_H, "\u02D9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00D3", unmodifiedChars:"H"},
+                  "\u00D3", "KeyH", KeyboardEvent.DOM_VK_H, "\u00D3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0008", unmodifiedChars:"h"},
+                  "\u02D9", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0008", unmodifiedChars:"H"},
+                  "\u00D3", "KeyH", KeyboardEvent.DOM_VK_H, "H", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_H,
+                   modifiers:{metaKey:1}, chars:"h", unmodifiedChars:"h"},
+                  "h", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{}, chars:"i", unmodifiedChars:"i"},
+                  "i", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{shiftKey:1}, chars:"I", unmodifiedChars:"I"},
+                  "I", "KeyI", KeyboardEvent.DOM_VK_I, "I", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{ctrlKey:1}, chars:"\u0009", unmodifiedChars:"i"},
+                  "i", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0009", unmodifiedChars:"I"},
+                  "I", "KeyI", KeyboardEvent.DOM_VK_I, "I", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:"i"},
+                  "Dead", "KeyI", KeyboardEvent.DOM_VK_I, "\u02C6", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // dead key
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u02C6", unmodifiedChars:"I"},
+                  "\u02C6", "KeyI", KeyboardEvent.DOM_VK_I, "\u02C6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0009", unmodifiedChars:"i"},
+                  "Dead", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0009", unmodifiedChars:"I"},
+                  "\u02C6", "KeyI", KeyboardEvent.DOM_VK_I, "I", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // XXX This test causes memory leak.
+    // yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_I,
+    //                modifiers:{metaKey:1}, chars:"i", unmodifiedChars:"i"},
+    //               "i", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{}, chars:"j", unmodifiedChars:"j"},
+                  "j", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{shiftKey:1}, chars:"J", unmodifiedChars:"J"},
+                  "J", "KeyJ", KeyboardEvent.DOM_VK_J, "J", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{ctrlKey:1}, chars:"\u000A", unmodifiedChars:"j"},
+                  "j", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000A", unmodifiedChars:"J"},
+                  "J", "KeyJ", KeyboardEvent.DOM_VK_J, "J", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{altKey:1}, chars:"\u2206", unmodifiedChars:"j"},
+                  "\u2206", "KeyJ", KeyboardEvent.DOM_VK_J, "\u2206", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00D4", unmodifiedChars:"J"},
+                  "\u00D4", "KeyJ", KeyboardEvent.DOM_VK_J, "\u00D4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u000A", unmodifiedChars:"j"},
+                  "\u2206", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u000A", unmodifiedChars:"J"},
+                  "\u00D4", "KeyJ", KeyboardEvent.DOM_VK_J, "J", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_J,
+                   modifiers:{metaKey:1}, chars:"j", unmodifiedChars:"j"},
+                  "j", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{}, chars:"k", unmodifiedChars:"k"},
+                  "k", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{shiftKey:1}, chars:"K", unmodifiedChars:"K"},
+                  "K", "KeyK", KeyboardEvent.DOM_VK_K, "K", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{ctrlKey:1}, chars:"\u000B", unmodifiedChars:"k"},
+                  "k", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000B", unmodifiedChars:"K"},
+                  "K", "KeyK", KeyboardEvent.DOM_VK_K, "K", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{altKey:1}, chars:"\u02DA", unmodifiedChars:"k"},
+                  "\u02DA", "KeyK", KeyboardEvent.DOM_VK_K, "\u02DA", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\uF8FF", unmodifiedChars:"K"},
+                  "\uF8FF", "KeyK", KeyboardEvent.DOM_VK_K, "\uF8FF", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u000B", unmodifiedChars:"k"},
+                  "\u02DA", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u000B", unmodifiedChars:"K"},
+                  "\uF8FF", "KeyK", KeyboardEvent.DOM_VK_K, "K", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_K,
+                   modifiers:{metaKey:1}, chars:"k", unmodifiedChars:"k"},
+                  "k", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{}, chars:"l", unmodifiedChars:"l"},
+                  "l", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{shiftKey:1}, chars:"L", unmodifiedChars:"L"},
+                  "L", "KeyL", KeyboardEvent.DOM_VK_L, "L", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{ctrlKey:1}, chars:"\u000C", unmodifiedChars:"l"},
+                  "l", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000C", unmodifiedChars:"L"},
+                  "L", "KeyL", KeyboardEvent.DOM_VK_L, "L", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{altKey:1}, chars:"\u00AC", unmodifiedChars:"l"},
+                  "\u00AC", "KeyL", KeyboardEvent.DOM_VK_L, "\u00AC", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00D2", unmodifiedChars:"L"},
+                  "\u00D2", "KeyL", KeyboardEvent.DOM_VK_L, "\u00D2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u000C", unmodifiedChars:"l"},
+                  "\u00AC", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u000C", unmodifiedChars:"L"},
+                  "\u00D2", "KeyL", KeyboardEvent.DOM_VK_L, "L", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_L,
+                   modifiers:{metaKey:1}, chars:"l", unmodifiedChars:"l"},
+                  "l", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{}, chars:"m", unmodifiedChars:"m"},
+                  "m", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{shiftKey:1}, chars:"M", unmodifiedChars:"M"},
+                  "M", "KeyM", KeyboardEvent.DOM_VK_M, "M", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{ctrlKey:1}, chars:"\u000D", unmodifiedChars:"m"},
+                  "m", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000D", unmodifiedChars:"M"},
+                  "M", "KeyM", KeyboardEvent.DOM_VK_M, "M", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{altKey:1}, chars:"\u00B5", unmodifiedChars:"m"},
+                  "\u00B5", "KeyM", KeyboardEvent.DOM_VK_M, "\u00B5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C2", unmodifiedChars:"M"},
+                  "\u00C2", "KeyM", KeyboardEvent.DOM_VK_M, "\u00C2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u000D", unmodifiedChars:"m"},
+                  "\u00B5", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u000D", unmodifiedChars:"M"},
+                  "\u00C2", "KeyM", KeyboardEvent.DOM_VK_M, "M", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_M,
+                   modifiers:{metaKey:1}, chars:"m", unmodifiedChars:"m"},
+                  "m", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{}, chars:"n", unmodifiedChars:"n"},
+                  "n", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{shiftKey:1}, chars:"N", unmodifiedChars:"N"},
+                  "N", "KeyN", KeyboardEvent.DOM_VK_N, "N", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{ctrlKey:1}, chars:"\u000E", unmodifiedChars:"n"},
+                  "n", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000E", unmodifiedChars:"N"},
+                  "N", "KeyN", KeyboardEvent.DOM_VK_N, "N", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:"n"},
+                  "Dead", "KeyN", KeyboardEvent.DOM_VK_N, "\u02DC", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // dead key
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u02DC", unmodifiedChars:"N"},
+                  "\u02DC", "KeyN", KeyboardEvent.DOM_VK_N, "\u02DC", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u000E", unmodifiedChars:"n"},
+                  "Dead", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u000E", unmodifiedChars:"N"},
+                  "\u02DC", "KeyN", KeyboardEvent.DOM_VK_N, "N", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_N,
+                   modifiers:{metaKey:1}, chars:"n", unmodifiedChars:"n"},
+                  "n", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{}, chars:"o", unmodifiedChars:"o"},
+                  "o", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{shiftKey:1}, chars:"O", unmodifiedChars:"O"},
+                  "O", "KeyO", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{ctrlKey:1}, chars:"\u000F", unmodifiedChars:"o"},
+                  "o", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000F", unmodifiedChars:"O"},
+                  "O", "KeyO", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{altKey:1}, chars:"\u00F8", unmodifiedChars:"o"},
+                  "\u00F8", "KeyO", KeyboardEvent.DOM_VK_O, "\u00F8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00D8", unmodifiedChars:"O"},
+                  "\u00D8", "KeyO", KeyboardEvent.DOM_VK_O, "\u00D8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u000F", unmodifiedChars:"o"},
+                  "\u00F8", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u000F", unmodifiedChars:"O"},
+                  "\u00D8", "KeyO", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_O,
+                   modifiers:{metaKey:1}, chars:"o", unmodifiedChars:"o"},
+                  "o", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{}, chars:"p", unmodifiedChars:"p"},
+                  "p", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{shiftKey:1}, chars:"P", unmodifiedChars:"P"},
+                  "P", "KeyP", KeyboardEvent.DOM_VK_P, "P", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{ctrlKey:1}, chars:"\u0010", unmodifiedChars:"p"},
+                  "p", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0010", unmodifiedChars:"P"},
+                  "P", "KeyP", KeyboardEvent.DOM_VK_P, "P", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{altKey:1}, chars:"\u03C0", unmodifiedChars:"p"},
+                  "\u03C0", "KeyP", KeyboardEvent.DOM_VK_P, "\u03C0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u220F", unmodifiedChars:"P"},
+                  "\u220F", "KeyP", KeyboardEvent.DOM_VK_P, "\u220F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0010", unmodifiedChars:"p"},
+                  "\u03C0", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0010", unmodifiedChars:"P"},
+                  "\u220F", "KeyP", KeyboardEvent.DOM_VK_P, "P", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // XXX This test starts private browsing mode (stopped at the confirmation dialog)
+    // yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_P,
+    //                modifiers:{metaKey:1}, chars:"p", unmodifiedChars:"p"},
+    //               "p", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{}, chars:"q", unmodifiedChars:"q"},
+                  "q", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{shiftKey:1}, chars:"Q", unmodifiedChars:"Q"},
+                  "Q", "KeyQ", KeyboardEvent.DOM_VK_Q, "Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{ctrlKey:1}, chars:"\u0011", unmodifiedChars:"q"},
+                  "q", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0011", unmodifiedChars:"Q"},
+                  "Q", "KeyQ", KeyboardEvent.DOM_VK_Q, "Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{altKey:1}, chars:"\u0153", unmodifiedChars:"q"},
+                  "\u0153", "KeyQ", KeyboardEvent.DOM_VK_Q, "\u0153", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u0152", unmodifiedChars:"Q"},
+                  "\u0152", "KeyQ", KeyboardEvent.DOM_VK_Q, "\u0152", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0011", unmodifiedChars:"q"},
+                  "\u0153", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0011", unmodifiedChars:"Q"},
+                  "\u0152", "KeyQ", KeyboardEvent.DOM_VK_Q, "Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Q,
+                   modifiers:{metaKey:1}, chars:"q", unmodifiedChars:"q"},
+                  "q", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{}, chars:"r", unmodifiedChars:"r"},
+                  "r", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{shiftKey:1}, chars:"R", unmodifiedChars:"R"},
+                  "R", "KeyR", KeyboardEvent.DOM_VK_R, "R", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{ctrlKey:1}, chars:"\u0012", unmodifiedChars:"r"},
+                  "r", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0012", unmodifiedChars:"R"},
+                  "R", "KeyR", KeyboardEvent.DOM_VK_R, "R", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{altKey:1}, chars:"\u00AE", unmodifiedChars:"r"},
+                  "\u00AE", "KeyR", KeyboardEvent.DOM_VK_R, "\u00AE", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2030", unmodifiedChars:"R"},
+                  "\u2030", "KeyR", KeyboardEvent.DOM_VK_R, "\u2030", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0012", unmodifiedChars:"r"},
+                  "\u00AE", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0012", unmodifiedChars:"R"},
+                  "\u2030", "KeyR", KeyboardEvent.DOM_VK_R, "R", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // XXX This test makes some tabs and dialogs.
+    // yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_R,
+    //                modifiers:{metaKey:1}, chars:"r", unmodifiedChars:"r"},
+    //               "r", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{}, chars:"s", unmodifiedChars:"s"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{shiftKey:1}, chars:"S", unmodifiedChars:"S"},
+                  "S", "KeyS", KeyboardEvent.DOM_VK_S, "S", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{ctrlKey:1}, chars:"\u0013", unmodifiedChars:"s"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0013", unmodifiedChars:"S"},
+                  "S", "KeyS", KeyboardEvent.DOM_VK_S, "S", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{altKey:1}, chars:"\u00DF", unmodifiedChars:"s"},
+                  "\u00DF", "KeyS", KeyboardEvent.DOM_VK_S, "\u00DF", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00CD", unmodifiedChars:"S"},
+                  "\u00CD", "KeyS", KeyboardEvent.DOM_VK_S, "\u00CD", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0013", unmodifiedChars:"s"},
+                  "\u00DF", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0013", unmodifiedChars:"S"},
+                  "\u00CD", "KeyS", KeyboardEvent.DOM_VK_S, "S", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{metaKey:1}, chars:"s", unmodifiedChars:"s"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{}, chars:"t", unmodifiedChars:"t"},
+                  "t", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{shiftKey:1}, chars:"T", unmodifiedChars:"T"},
+                  "T", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{ctrlKey:1}, chars:"\u0014", unmodifiedChars:"t"},
+                  "t", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0014", unmodifiedChars:"T"},
+                  "T", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{altKey:1}, chars:"\u2020", unmodifiedChars:"t"},
+                  "\u2020", "KeyT", KeyboardEvent.DOM_VK_T, "\u2020", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u02C7", unmodifiedChars:"T"},
+                  "\u02C7", "KeyT", KeyboardEvent.DOM_VK_T, "\u02C7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0014", unmodifiedChars:"t"},
+                  "\u2020", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0014", unmodifiedChars:"T"},
+                  "\u02C7", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{metaKey:1}, chars:"t", unmodifiedChars:"t"},
+                  "t", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{}, chars:"u", unmodifiedChars:"u"},
+                  "u", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{shiftKey:1}, chars:"U", unmodifiedChars:"U"},
+                  "U", "KeyU", KeyboardEvent.DOM_VK_U, "U", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{ctrlKey:1}, chars:"\u0015", unmodifiedChars:"u"},
+                  "u", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0015", unmodifiedChars:"U"},
+                  "U", "KeyU", KeyboardEvent.DOM_VK_U, "U", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:"u"},
+                  "Dead", "KeyU", KeyboardEvent.DOM_VK_U, "\u00A8", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // dead key
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00A8", unmodifiedChars:"U"},
+                  "\u00A8", "KeyU", KeyboardEvent.DOM_VK_U, "\u00A8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0015", unmodifiedChars:"u"},
+                  "Dead", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0015", unmodifiedChars:"U"},
+                  "\u00A8", "KeyU", KeyboardEvent.DOM_VK_U, "U", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_U,
+                   modifiers:{metaKey:1}, chars:"u", unmodifiedChars:"u"},
+                  "u", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{}, chars:"v", unmodifiedChars:"v"},
+                  "v", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{shiftKey:1}, chars:"V", unmodifiedChars:"V"},
+                  "V", "KeyV", KeyboardEvent.DOM_VK_V, "V", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{ctrlKey:1}, chars:"\u0016", unmodifiedChars:"v"},
+                  "v", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0016", unmodifiedChars:"V"},
+                  "V", "KeyV", KeyboardEvent.DOM_VK_V, "V", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{altKey:1}, chars:"\u221A", unmodifiedChars:"v"},
+                  "\u221A", "KeyV", KeyboardEvent.DOM_VK_V, "\u221A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u25CA", unmodifiedChars:"V"},
+                  "\u25CA", "KeyV", KeyboardEvent.DOM_VK_V, "\u25CA", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0016", unmodifiedChars:"v"},
+                  "\u221A", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0016", unmodifiedChars:"V"},
+                  "\u25CA", "KeyV", KeyboardEvent.DOM_VK_V, "V", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_V,
+                   modifiers:{metaKey:1}, chars:"v", unmodifiedChars:"v"},
+                  "v", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{}, chars:"w", unmodifiedChars:"w"},
+                  "w", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{shiftKey:1}, chars:"W", unmodifiedChars:"W"},
+                  "W", "KeyW", KeyboardEvent.DOM_VK_W, "W", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{ctrlKey:1}, chars:"\u0017", unmodifiedChars:"w"},
+                  "w", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0017", unmodifiedChars:"W"},
+                  "W", "KeyW", KeyboardEvent.DOM_VK_W, "W", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{altKey:1}, chars:"\u2211", unmodifiedChars:"w"},
+                  "\u2211", "KeyW", KeyboardEvent.DOM_VK_W, "\u2211", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u201E", unmodifiedChars:"W"},
+                  "\u201E", "KeyW", KeyboardEvent.DOM_VK_W, "\u201E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0017", unmodifiedChars:"w"},
+                  "\u2211", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0017", unmodifiedChars:"W"},
+                  "\u201E", "KeyW", KeyboardEvent.DOM_VK_W, "W", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_W,
+                   modifiers:{metaKey:1}, chars:"w", unmodifiedChars:"w"},
+                  "w", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{}, chars:"x", unmodifiedChars:"x"},
+                  "x", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{shiftKey:1}, chars:"X", unmodifiedChars:"X"},
+                  "X", "KeyX", KeyboardEvent.DOM_VK_X, "X", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{ctrlKey:1}, chars:"\u0018", unmodifiedChars:"x"},
+                  "x", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0018", unmodifiedChars:"X"},
+                  "X", "KeyX", KeyboardEvent.DOM_VK_X, "X", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{altKey:1}, chars:"\u2248", unmodifiedChars:"x"},
+                  "\u2248", "KeyX", KeyboardEvent.DOM_VK_X, "\u2248", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u02DB", unmodifiedChars:"X"},
+                  "\u02DB", "KeyX", KeyboardEvent.DOM_VK_X, "\u02DB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0018", unmodifiedChars:"x"},
+                  "\u2248", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0018", unmodifiedChars:"X"},
+                  "\u02DB", "KeyX", KeyboardEvent.DOM_VK_X, "X", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_X,
+                   modifiers:{metaKey:1}, chars:"x", unmodifiedChars:"x"},
+                  "x", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{}, chars:"y", unmodifiedChars:"y"},
+                  "y", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{shiftKey:1}, chars:"Y", unmodifiedChars:"Y"},
+                  "Y", "KeyY", KeyboardEvent.DOM_VK_Y, "Y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{ctrlKey:1}, chars:"\u0019", unmodifiedChars:"y"},
+                  "y", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0019", unmodifiedChars:"Y"},
+                  "Y", "KeyY", KeyboardEvent.DOM_VK_Y, "Y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{altKey:1}, chars:"\u00A5", unmodifiedChars:"y"},
+                  "\u00A5", "KeyY", KeyboardEvent.DOM_VK_Y, "\u00A5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C1", unmodifiedChars:"Y"},
+                  "\u00C1", "KeyY", KeyboardEvent.DOM_VK_Y, "\u00C1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u0019", unmodifiedChars:"y"},
+                  "\u00A5", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0019", unmodifiedChars:"Y"},
+                  "\u00C1", "KeyY", KeyboardEvent.DOM_VK_Y, "Y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Y,
+                   modifiers:{metaKey:1}, chars:"y", unmodifiedChars:"y"},
+                  "y", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{}, chars:"z", unmodifiedChars:"z"},
+                  "z", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{shiftKey:1}, chars:"Z", unmodifiedChars:"Z"},
+                  "Z", "KeyZ", KeyboardEvent.DOM_VK_Z, "Z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{ctrlKey:1}, chars:"\u001A", unmodifiedChars:"z"},
+                  "z", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001A", unmodifiedChars:"Z"},
+                  "Z", "KeyZ", KeyboardEvent.DOM_VK_Z, "Z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{altKey:1}, chars:"\u03A9", unmodifiedChars:"z"},
+                  "\u03A9", "KeyZ", KeyboardEvent.DOM_VK_Z, "\u03A9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00B8", unmodifiedChars:"Z"},
+                  "\u00B8", "KeyZ", KeyboardEvent.DOM_VK_Z, "\u00B8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001A", unmodifiedChars:"z"},
+                  "\u03A9", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001A", unmodifiedChars:"Z"},
+                  "\u00B8", "KeyZ", KeyboardEvent.DOM_VK_Z, "Z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Z,
+                   modifiers:{metaKey:1}, chars:"z", unmodifiedChars:"z"},
+                  "z", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // numeric
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{shiftKey:1}, chars:"!", unmodifiedChars:"!"},
+                  "!", "Digit1", KeyboardEvent.DOM_VK_1, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{ctrlKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"!"},
+                  "!", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1}, chars:"\u00A1", unmodifiedChars:"1"},
+                  "\u00A1", "Digit1", KeyboardEvent.DOM_VK_1, "\u00A1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2044", unmodifiedChars:"!"},
+                  "\u2044", "Digit1", KeyboardEvent.DOM_VK_1, "\u2044", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "\u00A1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"!"},
+                  "\u2044", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{metaKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{shiftKey:1}, chars:"@", unmodifiedChars:"@"},
+                  "@", "Digit2", KeyboardEvent.DOM_VK_2, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{ctrlKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0000", unmodifiedChars:"@"},
+                  "@", "Digit2", KeyboardEvent.DOM_VK_2, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1}, chars:"\u2122", unmodifiedChars:"2"},
+                  "\u2122", "Digit2", KeyboardEvent.DOM_VK_2, "\u2122", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u20AC", unmodifiedChars:"@"},
+                  "\u20AC", "Digit2", KeyboardEvent.DOM_VK_2, "\u20AC", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "\u2122", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0000", unmodifiedChars:"@"},
+                  "\u20AC", "Digit2", KeyboardEvent.DOM_VK_2, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{metaKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{shiftKey:1}, chars:"#", unmodifiedChars:"#"},
+                  "#", "Digit3", KeyboardEvent.DOM_VK_3, "#", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{ctrlKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"#"},
+                  "#", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1}, chars:"\u00A3", unmodifiedChars:"3"},
+                  "\u00A3", "Digit3", KeyboardEvent.DOM_VK_3, "\u00A3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2039", unmodifiedChars:"#"},
+                  "\u2039", "Digit3", KeyboardEvent.DOM_VK_3, "\u2039", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "\u00A3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"#"},
+                  "\u2039", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{metaKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{shiftKey:1}, chars:"$", unmodifiedChars:"$"},
+                  "$", "Digit4", KeyboardEvent.DOM_VK_4, "$", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{ctrlKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"$"},
+                  "$", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1}, chars:"\u00A2", unmodifiedChars:"4"},
+                  "\u00A2", "Digit4", KeyboardEvent.DOM_VK_4, "\u00A2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u203A", unmodifiedChars:"$"},
+                  "\u203A", "Digit4", KeyboardEvent.DOM_VK_4, "\u203A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "\u00A2", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"$"},
+                  "\u203A", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{metaKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{shiftKey:1}, chars:"%", unmodifiedChars:"%"},
+                  "%", "Digit5", KeyboardEvent.DOM_VK_5, "%", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{ctrlKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"%"},
+                  "%", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1}, chars:"\u221E", unmodifiedChars:"5"},
+                  "\u221E", "Digit5", KeyboardEvent.DOM_VK_5, "\u221E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\uFB01", unmodifiedChars:"%"},
+                  "\uFB01", "Digit5", KeyboardEvent.DOM_VK_5, "\uFB01", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "\u221E", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"%"},
+                  "\uFB01", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{metaKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{shiftKey:1}, chars:"^", unmodifiedChars:"^"},
+                  "^", "Digit6", KeyboardEvent.DOM_VK_6, "^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{ctrlKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001E", unmodifiedChars:"^"},
+                  "^", "Digit6", KeyboardEvent.DOM_VK_6, "\u0000", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1}, chars:"\u00A7", unmodifiedChars:"6"},
+                  "\u00A7", "Digit6", KeyboardEvent.DOM_VK_6, "\u00A7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\uFB02", unmodifiedChars:"^"},
+                  "\uFB02", "Digit6", KeyboardEvent.DOM_VK_6, "\uFB02", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "\u00A7", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001E", unmodifiedChars:"^"},
+                  "\uFB02", "Digit6", KeyboardEvent.DOM_VK_6, "\u0000", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{metaKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{shiftKey:1}, chars:"&", unmodifiedChars:"&"},
+                  "&", "Digit7", KeyboardEvent.DOM_VK_7, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{ctrlKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"&"},
+                  "&", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1}, chars:"\u00B6", unmodifiedChars:"7"},
+                  "\u00B6", "Digit7", KeyboardEvent.DOM_VK_7, "\u00B6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2021", unmodifiedChars:"&"},
+                  "\u2021", "Digit7", KeyboardEvent.DOM_VK_7, "\u2021", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "\u00B6", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"&"},
+                  "\u2021", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{metaKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{shiftKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "Digit8", KeyboardEvent.DOM_VK_8, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{ctrlKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"*"},
+                  "*", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1}, chars:"\u2022", unmodifiedChars:"8"},
+                  "\u2022", "Digit8", KeyboardEvent.DOM_VK_8, "\u2022", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00B0", unmodifiedChars:"*"},
+                  "\u00B0", "Digit8", KeyboardEvent.DOM_VK_8, "\u00B0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "\u2022", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"*"},
+                  "\u00B0", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{metaKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{shiftKey:1}, chars:"(", unmodifiedChars:"("},
+                  "(", "Digit9", KeyboardEvent.DOM_VK_9, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{ctrlKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"("},
+                  "(", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1}, chars:"\u00AA", unmodifiedChars:"9"},
+                  "\u00AA", "Digit9", KeyboardEvent.DOM_VK_9, "\u00AA", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00B7", unmodifiedChars:"("},
+                  "\u00B7", "Digit9", KeyboardEvent.DOM_VK_9, "\u00B7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "\u00AA", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"("},
+                  "\u00B7", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{metaKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{shiftKey:1}, chars:")", unmodifiedChars:")"},
+                  ")", "Digit0", KeyboardEvent.DOM_VK_0, ")", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{ctrlKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"0", unmodifiedChars:")"},
+                  ")", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1}, chars:"\u00BA", unmodifiedChars:"0"},
+                  "\u00BA", "Digit0", KeyboardEvent.DOM_VK_0, "\u00BA", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u201A", unmodifiedChars:")"},
+                  "\u201A", "Digit0", KeyboardEvent.DOM_VK_0, "\u201A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "\u00BA", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"0", unmodifiedChars:")"},
+                  "\u201A", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{metaKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // other chracters
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{}, chars:"`", unmodifiedChars:"`"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{shiftKey:1}, chars:"~", unmodifiedChars:"~"},
+                  "~", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "~", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{ctrlKey:1}, chars:"`", unmodifiedChars:"`"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"`", unmodifiedChars:"~"},
+                  "~", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:"`"},
+                  "Dead", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // dead key
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"`", unmodifiedChars:"~"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"`", unmodifiedChars:"`"},
+                  "Dead", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"`", unmodifiedChars:"~"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Grave,
+                   modifiers:{metaKey:1}, chars:"`", unmodifiedChars:"`"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{}, chars:"-", unmodifiedChars:"-"},
+                  "-", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{shiftKey:1}, chars:"_", unmodifiedChars:"_"},
+                  "_", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{ctrlKey:1}, chars:"\u001F", unmodifiedChars:"-"},
+                  "-", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001F", unmodifiedChars:"_"},
+                  "_", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{altKey:1}, chars:"\u2013", unmodifiedChars:"-"},
+                  "\u2013", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "\u2013", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2014", unmodifiedChars:"_"},
+                  "\u2014", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "\u2014", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001F", unmodifiedChars:"-"},
+                  "\u2013", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001F", unmodifiedChars:"_"},
+                  "\u2014", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Minus,
+                   modifiers:{metaKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "-", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{}, chars:"=", unmodifiedChars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{shiftKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{ctrlKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"=", unmodifiedChars:"+"},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{altKey:1}, chars:"\u2260", unmodifiedChars:"="},
+                  "\u2260", "Equal", KeyboardEvent.DOM_VK_EQUALS, "\u2260", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00B1", unmodifiedChars:"+"},
+                  "\u00B1", "Equal", KeyboardEvent.DOM_VK_EQUALS, "\u00B1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"=", unmodifiedChars:"="},
+                  "\u2260", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"=", unmodifiedChars:"+"},
+                  "\u00B1", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Equal,
+                   modifiers:{metaKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{}, chars:"[", unmodifiedChars:"["},
+                  "[", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "[", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{shiftKey:1}, chars:"{", unmodifiedChars:"{"},
+                  "{", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "{", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{ctrlKey:1}, chars:"\u001B", unmodifiedChars:"["},
+                  "[", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001B", unmodifiedChars:"{"},
+                  "{", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{altKey:1}, chars:"\u201C", unmodifiedChars:"["},
+                  "\u201C", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u201C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u201D", unmodifiedChars:"{"},
+                  "\u201D", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u201D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001B", unmodifiedChars:"["},
+                  "\u201C", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001B", unmodifiedChars:"{"},
+                  "\u201D", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{metaKey:1}, chars:"[", unmodifiedChars:"["},
+                  "[", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "[", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{}, chars:"]", unmodifiedChars:"]"},
+                  "]", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "]", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{shiftKey:1}, chars:"}", unmodifiedChars:"}"},
+                  "}", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "}", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{ctrlKey:1}, chars:"\u001D", unmodifiedChars:"]"},
+                  "]", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001D", unmodifiedChars:"}"},
+                  "}", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{altKey:1}, chars:"\u2018", unmodifiedChars:"]"},
+                  "\u2018", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "\u2018", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2019", unmodifiedChars:"}"},
+                  "\u2019", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "\u2019", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001D", unmodifiedChars:"]"},
+                  "\u2018", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001D", unmodifiedChars:"}"},
+                  "\u2019", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_RightBracket,
+                   modifiers:{metaKey:1}, chars:"]", unmodifiedChars:"]"},
+                  "]", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "]", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{}, chars:"\\", unmodifiedChars:"\\"},
+                  "\\", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\\", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{shiftKey:1}, chars:"|", unmodifiedChars:"|"},
+                  "|", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "|", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{ctrlKey:1}, chars:"\u001C", unmodifiedChars:"\\"},
+                  "\\", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001C", unmodifiedChars:"|"},
+                  "|", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{altKey:1}, chars:"\u00AB", unmodifiedChars:"\\"},
+                  "\u00AB", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\u00AB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00BB", unmodifiedChars:"|"},
+                  "\u00BB", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\u00BB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001C", unmodifiedChars:"\\"},
+                  "\u00AB", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001C", unmodifiedChars:"|"},
+                  "\u00BB", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Backslash,
+                   modifiers:{metaKey:1}, chars:"\\", unmodifiedChars:"\\"},
+                  "\\", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\\", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{}, chars:";", unmodifiedChars:";"},
+                  ";", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{shiftKey:1}, chars:":", unmodifiedChars:":"},
+                  ":", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ":", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{ctrlKey:1}, chars:";", unmodifiedChars:";"},
+                  ";", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:";", unmodifiedChars:":"},
+                  ":", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{altKey:1}, chars:"\u2026", unmodifiedChars:";"},
+                  "\u2026", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, "\u2026", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00DA", unmodifiedChars:":"},
+                  "\u00DA", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, "\u00DA", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:";", unmodifiedChars:";"},
+                  "\u2026", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:";", unmodifiedChars:":"},
+                  "\u00DA", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                   modifiers:{metaKey:1}, chars:";", unmodifiedChars:";"},
+                  ";", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{}, chars:"'", unmodifiedChars:"'"},
+                  "'", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{shiftKey:1}, chars:"\"", unmodifiedChars:"\""},
+                  "\"", "Quote", KeyboardEvent.DOM_VK_QUOTE, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{ctrlKey:1}, chars:"'", unmodifiedChars:"'"},
+                  "'", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"'", unmodifiedChars:"\""},
+                  "\"", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{altKey:1}, chars:"\u00E6", unmodifiedChars:"'"},
+                  "\u00E6", "Quote", KeyboardEvent.DOM_VK_QUOTE, "\u00E6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C6", unmodifiedChars:"\""},
+                  "\u00C6", "Quote", KeyboardEvent.DOM_VK_QUOTE, "\u00C6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"'", unmodifiedChars:"'"},
+                  "\u00E6", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"'", unmodifiedChars:"\""},
+                  "\u00C6", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{metaKey:1}, chars:"'", unmodifiedChars:"'"},
+                  "'", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{}, chars:",", unmodifiedChars:","},
+                  ",", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{shiftKey:1}, chars:"<", unmodifiedChars:"<"},
+                  "<", "Comma", KeyboardEvent.DOM_VK_COMMA, "<", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{ctrlKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:",", unmodifiedChars:"<"},
+                  "<", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{altKey:1}, chars:"\u2264", unmodifiedChars:","},
+                  "\u2264", "Comma", KeyboardEvent.DOM_VK_COMMA, "\u2264", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00AF", unmodifiedChars:"<"},
+                  "\u00AF", "Comma", KeyboardEvent.DOM_VK_COMMA, "\u00AF", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:",", unmodifiedChars:","},
+                  "\u2264", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:",", unmodifiedChars:"<"},
+                  "\u00AF", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Comma,
+                   modifiers:{metaKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{}, chars:".", unmodifiedChars:"."},
+                  ".", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{shiftKey:1}, chars:">", unmodifiedChars:">"},
+                  ">", "Period", KeyboardEvent.DOM_VK_PERIOD, ">", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{ctrlKey:1}, chars:".", unmodifiedChars:"."},
+                  ".", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:".", unmodifiedChars:">"},
+                  ">", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{altKey:1}, chars:"\u2265", unmodifiedChars:"."},
+                  "\u2265", "Period", KeyboardEvent.DOM_VK_PERIOD, "\u2265", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u02D8", unmodifiedChars:">"},
+                  "\u02D8", "Period", KeyboardEvent.DOM_VK_PERIOD, "\u02D8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:".", unmodifiedChars:"."},
+                  "\u2265", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:".", unmodifiedChars:">"},
+                  "\u02D8", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{metaKey:1}, chars:".", unmodifiedChars:"."},
+                  ".", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{}, chars:"/", unmodifiedChars:"/"},
+                  "/", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{shiftKey:1}, chars:"?", unmodifiedChars:"?"},
+                  "?", "Slash", KeyboardEvent.DOM_VK_SLASH, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{ctrlKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"?"},
+                  "?", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{altKey:1}, chars:"\u00F7", unmodifiedChars:"/"},
+                  "\u00F7", "Slash", KeyboardEvent.DOM_VK_SLASH, "\u00F7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00BF", unmodifiedChars:"?"},
+                  "\u00BF", "Slash", KeyboardEvent.DOM_VK_SLASH, "\u00BF", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "\u00F7", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"?"},
+                  "\u00BF", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Slash,
+                   modifiers:{metaKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // numpad
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad1,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad2,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad3,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad4,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad5,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad6,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad7,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad8,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad9,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Keypad0,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEquals,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"=", unmodifiedChars:"="},
+                  "=", "NumpadEqual", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadDivide,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"/", unmodifiedChars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMultiply,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"*", unmodifiedChars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadMinus,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"-", unmodifiedChars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadPlus,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"+", unmodifiedChars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_KeypadEnter,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:"\u0003", unmodifiedChars:"\u0003"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, shiftKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, ctrlKey:1, shiftKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, altKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, altKey:1, shiftKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, altKey:1, ctrlKey:1, shiftKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_JIS_KeypadComma,
+                   modifiers:{numericKeyPadKey:1, metaKey:1}, chars:",", unmodifiedChars:","},
+                  ",", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ",", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+
+    // French, numeric
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{}, chars:"&", unmodifiedChars:"&"},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{ctrlKey:1}, chars:"1", unmodifiedChars:"&"},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1}, chars:"\uF8FF", unmodifiedChars:"&"},
+                  "\uF8FF", "Digit1", KeyboardEvent.DOM_VK_1, "\uF8FF", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"", unmodifiedChars:"1"},
+                  "Dead", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"1", unmodifiedChars:"&"},
+                  "\uF8FF", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "Dead", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{metaKey:1}, chars:"&", unmodifiedChars:"&"},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "&", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"1", unmodifiedChars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{}, chars:"\u00E9", unmodifiedChars:"\u00E9"},
+                  "\u00E9", "Digit2", KeyboardEvent.DOM_VK_2, "\u00E9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{ctrlKey:1}, chars:"2", unmodifiedChars:"\u00E9"},
+                  "\u00E9", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1}, chars:"\u00EB", unmodifiedChars:"\u00E9"},
+                  "\u00EB", "Digit2", KeyboardEvent.DOM_VK_2, "\u00EB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u201E", unmodifiedChars:"2"},
+                  "\u201E", "Digit2", KeyboardEvent.DOM_VK_2, "\u201E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"2", unmodifiedChars:"\u00E9"},
+                  "\u00EB", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "\u201E", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{metaKey:1}, chars:"\u00E9", unmodifiedChars:"\u00E9"},
+                  "\u00E9", "Digit2", KeyboardEvent.DOM_VK_2, "\u00E9", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"2", unmodifiedChars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{}, chars:"\"", unmodifiedChars:"\""},
+                  "\"", "Digit3", KeyboardEvent.DOM_VK_3, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{ctrlKey:1}, chars:"3", unmodifiedChars:"\""},
+                  "\"", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1}, chars:"\u201C", unmodifiedChars:"\""},
+                  "\u201C", "Digit3", KeyboardEvent.DOM_VK_3, "\u201C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u201D", unmodifiedChars:"3"},
+                  "\u201D", "Digit3", KeyboardEvent.DOM_VK_3, "\u201D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"3", unmodifiedChars:"\""},
+                  "\u201C", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"3", unmodifiedChars:"3"},
+                  "\u201D", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{metaKey:1}, chars:"\"", unmodifiedChars:"\""},
+                  "\"", "Digit3", KeyboardEvent.DOM_VK_3, "\"", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Cmd+Shift+3 is a shortcut key of taking a snapshot
+    // yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_3,
+    //                modifiers:{metaKey:1, shiftKey:1}, chars:"\"", unmodifiedChars:"\""},
+    //               "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{}, chars:"'", unmodifiedChars:"'"},
+                  "'", "Digit4", KeyboardEvent.DOM_VK_4, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{ctrlKey:1}, chars:"4", unmodifiedChars:"'"},
+                  "'", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1}, chars:"\u2018", unmodifiedChars:"'"},
+                  "\u2018", "Digit4", KeyboardEvent.DOM_VK_4, "\u2018", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u2019", unmodifiedChars:"4"},
+                  "\u2019", "Digit4", KeyboardEvent.DOM_VK_4, "\u2019", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"4", unmodifiedChars:"'"},
+                  "\u2018", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+                  "\u2019", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{metaKey:1}, chars:"'", unmodifiedChars:"'"},
+                  "'", "Digit4", KeyboardEvent.DOM_VK_4, "'", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Cmd+Shift+4 is a shortcut key of taking a snapshot in specific range
+    // yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_4,
+    //                modifiers:{metaKey:1, shiftKey:1}, chars:"4", unmodifiedChars:"4"},
+    //               "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{}, chars:"(", unmodifiedChars:"("},
+                  "(", "Digit5", KeyboardEvent.DOM_VK_5, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{ctrlKey:1}, chars:"5", unmodifiedChars:"("},
+                  "(", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1}, chars:"{", unmodifiedChars:"("},
+                  "{", "Digit5", KeyboardEvent.DOM_VK_5, "{", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"[", unmodifiedChars:"5"},
+                  "[", "Digit5", KeyboardEvent.DOM_VK_5, "[", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"5", unmodifiedChars:"("},
+                  "{", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "[", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{metaKey:1}, chars:"(", unmodifiedChars:"("},
+                  "(", "Digit5", KeyboardEvent.DOM_VK_5, "(", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"5", unmodifiedChars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{}, chars:"\u00A7", unmodifiedChars:"\u00A7"},
+                  "\u00A7", "Digit6", KeyboardEvent.DOM_VK_6, "\u00A7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{shiftKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{ctrlKey:1}, chars:"\u001D", unmodifiedChars:"\u00A7"},
+                  "\u00A7", "Digit6", KeyboardEvent.DOM_VK_6, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001D", unmodifiedChars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1}, chars:"\u00B6", unmodifiedChars:"\u00A7"},
+                  "\u00B6", "Digit6", KeyboardEvent.DOM_VK_6, "\u00B6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00E5", unmodifiedChars:"6"},
+                  "\u00E5", "Digit6", KeyboardEvent.DOM_VK_6, "\u00E5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001D", unmodifiedChars:"\u00A7"},
+                  "\u00B6", "Digit6", KeyboardEvent.DOM_VK_6, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001D", unmodifiedChars:"6"},
+                  "\u00E5", "Digit6", KeyboardEvent.DOM_VK_6, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{metaKey:1}, chars:"\u00A7", unmodifiedChars:"\u00A7"},
+                  "\u00A7", "Digit6", KeyboardEvent.DOM_VK_6, "\u00A7", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"6", unmodifiedChars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{}, chars:"\u00E8", unmodifiedChars:"\u00E8"},
+                  "\u00E8", "Digit7", KeyboardEvent.DOM_VK_7, "\u00E8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{ctrlKey:1}, chars:"7", unmodifiedChars:"\u00E8"},
+                  "\u00E8", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1}, chars:"\u00AB", unmodifiedChars:"\u00E8"},
+                  "\u00AB", "Digit7", KeyboardEvent.DOM_VK_7, "\u00AB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00BB", unmodifiedChars:"7"},
+                  "\u00BB", "Digit7", KeyboardEvent.DOM_VK_7, "\u00BB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"7", unmodifiedChars:"\u00E8"},
+                  "\u00AB", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "\u00BB", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{metaKey:1}, chars:"\u00E8", unmodifiedChars:"\u00E8"},
+                  "\u00E8", "Digit7", KeyboardEvent.DOM_VK_7, "\u00E8", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"7", unmodifiedChars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{}, chars:"!", unmodifiedChars:"!"},
+                  "!", "Digit8", KeyboardEvent.DOM_VK_8, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{ctrlKey:1}, chars:"8", unmodifiedChars:"!"},
+                  "!", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1}, chars:"\u00A1", unmodifiedChars:"!"},
+                  "\u00A1", "Digit8", KeyboardEvent.DOM_VK_8, "\u00A1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00DB", unmodifiedChars:"8"},
+                  "\u00DB", "Digit8", KeyboardEvent.DOM_VK_8, "\u00DB", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"8", unmodifiedChars:"!"},
+                  "\u00A1", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "\u00DB", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{metaKey:1}, chars:"!", unmodifiedChars:"!"},
+                  "!", "Digit8", KeyboardEvent.DOM_VK_8, "!", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"8", unmodifiedChars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{}, chars:"\u00E7", unmodifiedChars:"\u00E7"},
+                  "\u00E7", "Digit9", KeyboardEvent.DOM_VK_9, "\u00E7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{shiftKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{ctrlKey:1}, chars:"\u001C", unmodifiedChars:"\u00E7"},
+                  "\u00E7", "Digit9", KeyboardEvent.DOM_VK_9, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001C", unmodifiedChars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1}, chars:"\u00C7", unmodifiedChars:"\u00E7"},
+                  "\u00C7", "Digit9", KeyboardEvent.DOM_VK_9, "\u00C7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C1", unmodifiedChars:"9"},
+                  "\u00C1", "Digit9", KeyboardEvent.DOM_VK_9, "\u00C1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"\u001C", unmodifiedChars:"\u00E7"},
+                  "\u00C7", "Digit9", KeyboardEvent.DOM_VK_9, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"\u001C", unmodifiedChars:"9"},
+                  "\u00C1", "Digit9", KeyboardEvent.DOM_VK_9, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{metaKey:1}, chars:"\u00E7", unmodifiedChars:"\u00E7"},
+                  "\u00E7", "Digit9", KeyboardEvent.DOM_VK_9, "\u00E7", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"9", unmodifiedChars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{}, chars:"\u00E0", unmodifiedChars:"\u00E0"},
+                  "\u00E0", "Digit0", KeyboardEvent.DOM_VK_0, "\u00E0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{shiftKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{ctrlKey:1}, chars:"", unmodifiedChars:"\u00E0"},
+                  "\u00E0", "Digit0", KeyboardEvent.DOM_VK_0, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"", unmodifiedChars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1}, chars:"\u00F8", unmodifiedChars:"\u00E0"},
+                  "\u00F8", "Digit0", KeyboardEvent.DOM_VK_0, "\u00F8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00D8", unmodifiedChars:"0"},
+                  "\u00D8", "Digit0", KeyboardEvent.DOM_VK_0, "\u00D8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1, ctrlKey:1}, chars:"", unmodifiedChars:"\u00E0"},
+                  "\u00F8", "Digit0", KeyboardEvent.DOM_VK_0, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:"", unmodifiedChars:"0"},
+                  "\u00D8", "Digit0", KeyboardEvent.DOM_VK_0, "\u0000" /* TODO */, SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{metaKey:1}, chars:"\u00E0", unmodifiedChars:"\u00E0"},
+                  "\u00E0", "Digit0", KeyboardEvent.DOM_VK_0, "\u00E0", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{metaKey:1, shiftKey:1}, chars:"0", unmodifiedChars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Thai
+    // keycode should be DOM_VK_[A-Z] of the key on the latest ASCII capable keyboard layout is for alphabet
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{}, chars:"\u0E1F", unmodifiedChars:"\u0E1F"},
+                  "\u0E1F", "KeyA", KeyboardEvent.DOM_VK_A, "\u0E1F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // keycode should be shifted character if unshifted character isn't an ASCII character
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_Quote,
+                   modifiers:{}, chars:"\u0E07", unmodifiedChars:"\u0E07"},
+                  "\u0E07", "Quote", KeyboardEvent.DOM_VK_PERIOD, "\u0E07", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // keycode should be same as ANSI keyboard layout's key which causes the native virtual keycode
+    // if the character of the key on the latest ASCII capable keyboard layout isn't for alphabet
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{}, chars:"\u0E43", unmodifiedChars:"\u0E43"},
+                  "\u0E43", "Period", KeyboardEvent.DOM_VK_PERIOD, "\u0E43", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // keycode should be DOM_VK_[0-9] if the key on the latest ASCII capable keyboard layout is for numeric
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_1,
+                   modifiers:{}, chars:"\u0E45", unmodifiedChars:"\u0E45"},
+                  "\u0E45", "Digit1", KeyboardEvent.DOM_VK_1, "\u0E45", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_2,
+                   modifiers:{}, chars:"/", unmodifiedChars:"/"},
+                  "/", "Digit2", KeyboardEvent.DOM_VK_2, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_3,
+                   modifiers:{}, chars:"_", unmodifiedChars:"_"},
+                  "_", "Digit3", KeyboardEvent.DOM_VK_3, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_4,
+                   modifiers:{}, chars:"\u0E20", unmodifiedChars:"\u0E20"},
+                  "\u0E20", "Digit4", KeyboardEvent.DOM_VK_4, "\u0E20", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_5,
+                   modifiers:{}, chars:"\u0E16", unmodifiedChars:"\u0E16"},
+                  "\u0E16", "Digit5", KeyboardEvent.DOM_VK_5, "\u0E16", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_6,
+                   modifiers:{}, chars:"\u0E38", unmodifiedChars:"\u0E38"},
+                  "\u0E38", "Digit6", KeyboardEvent.DOM_VK_6, "\u0E38", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_7,
+                   modifiers:{}, chars:"\u0E36", unmodifiedChars:"\u0E36"},
+                  "\u0E36", "Digit7", KeyboardEvent.DOM_VK_7, "\u0E36", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_8,
+                   modifiers:{}, chars:"\u0E04", unmodifiedChars:"\u0E04"},
+                  "\u0E04", "Digit8", KeyboardEvent.DOM_VK_8, "\u0E04", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_9,
+                   modifiers:{}, chars:"\u0E15", unmodifiedChars:"\u0E15"},
+                  "\u0E15", "Digit9", KeyboardEvent.DOM_VK_9, "\u0E15", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_THAI, keyCode:MAC_VK_ANSI_0,
+                   modifiers:{}, chars:"\u0E08", unmodifiedChars:"\u0E08"},
+                  "\u0E08", "Digit0", KeyboardEvent.DOM_VK_0, "\u0E08", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Dvorak-Qwerty, layout should be changed when Command key is pressed.
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{}, chars:"o", unmodifiedChars:"o"},
+                  "o", "KeyS", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{shiftKey:1}, chars:"O", unmodifiedChars:"O"},
+                  "O", "KeyS", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{ctrlKey:1}, chars:"\u000F", unmodifiedChars:"o"},
+                  "o", "KeyS", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{altKey:1}, chars:"\u00F8", unmodifiedChars:"o"},
+                  "\u00F8", "KeyS", KeyboardEvent.DOM_VK_O, "\u00F8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_S,
+                   modifiers:{metaKey:1}, chars:"s", unmodifiedChars:"o"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{}, chars:"e", unmodifiedChars:"e"},
+                  "e", "KeyD", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{shiftKey:1}, chars:"E", unmodifiedChars:"E"},
+                  "E", "KeyD", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{ctrlKey:1}, chars:"\u0005", unmodifiedChars:"e"},
+                  "e", "KeyD", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{altKey:1}, chars:"", unmodifiedChars:"e"},
+                  "Dead", "KeyD", KeyboardEvent.DOM_VK_E, "\u00B4", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // dead key
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_D,
+                   modifiers:{metaKey:1}, chars:"d", unmodifiedChars:"e"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{metaKey:1, altKey:1}, chars:"^", unmodifiedChars:"c"},
+                  "^", "KeyI", KeyboardEvent.DOM_VK_I, "^", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_DVORAK_QWERTY, keyCode:MAC_VK_ANSI_I,
+                   modifiers:{metaKey:1, altKey:1, shiftKey:1}, chars:"\u02C6", unmodifiedChars:"C"},
+                  "\u02C6", "KeyI", KeyboardEvent.DOM_VK_I, "\u02C6", SHOULD_DELIVER_KEYDOWN_KEYPRESS, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Arabic - PC keyboard layout inputs 2 or more characters with some key.
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{shiftKey:1}, chars:"\u0644\u0623", unmodifiedChars:"\u0644\u0623"},
+                  ["\u0644\u0623", "\u0644", "\u0623", "\u0644\u0623"], "KeyG", KeyboardEvent.DOM_VK_G, "\u0644\u0623", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{shiftKey:1}, chars:"\u0644\u0625", unmodifiedChars:"\u0644\u0625"},
+                  ["\u0644\u0625", "\u0644", "\u0625", "\u0644\u0625"], "KeyT", KeyboardEvent.DOM_VK_T, "\u0644\u0625", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{shiftKey:1}, chars:"\u0644\u0622", unmodifiedChars:"\u0644\u0622"},
+                  ["\u0644\u0622", "\u0644", "\u0622", "\u0644\u0622"], "KeyB", KeyboardEvent.DOM_VK_B, "\u0644\u0622", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{}, chars:"\u0644\u0627", unmodifiedChars:"\u0644\u0627"},
+                  ["\u0644\u0627", "\u0644", "\u0627", "\u0644\u0627"], "KeyB", KeyboardEvent.DOM_VK_B, "\u0644\u0627", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    cleanup();
+  }
+
+  function* testKeysOnWindows()
+  {
+    // On Windows, you can use Spy++ or Winspector (free) to watch window messages.
+    // The keyCode is given by the wParam of the last WM_KEYDOWN message. The
+    // chars string is given by the wParam of the WM_CHAR message. unmodifiedChars
+    // is not needed on Windows.
+
+    // Shift-ctrl-alt generates no WM_CHAR, but we still get a keypress
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:""},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Greek plain text
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u03b1"},
+                  "\u03b1", "KeyA", KeyboardEvent.DOM_VK_A, "\u03b1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u0391"},
+                  "\u0391", "KeyA", KeyboardEvent.DOM_VK_A, "\u0391", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Greek ctrl keys produce Latin charcodes
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1}, chars:"\u0001"},
+                  "\u03b1", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0001"},
+                  "\u0391", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Caps Lock key event
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_CAPITAL,
+                   modifiers:{capsLockKey:1}, chars:""},
+                  "CapsLock", "CapsLock", KeyboardEvent.DOM_VK_CAPS_LOCK, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_CAPITAL,
+                   modifiers:{capsLockKey:0}, chars:""},
+                  "CapsLock", "CapsLock", KeyboardEvent.DOM_VK_CAPS_LOCK, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Shift keys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_LSHIFT,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Shift", "ShiftLeft", KeyboardEvent.DOM_VK_SHIFT, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RSHIFT,
+                   modifiers:{shiftRightKey:1}, chars:""},
+                  "Shift", "ShiftRight", KeyboardEvent.DOM_VK_SHIFT, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // Ctrl keys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_LCONTROL,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "Control", "ControlLeft", KeyboardEvent.DOM_VK_CONTROL, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RCONTROL,
+                   modifiers:{ctrlRightKey:1}, chars:""},
+                  "Control", "ControlRight", KeyboardEvent.DOM_VK_CONTROL, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // Alt keys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_LMENU,
+                   modifiers:{altKey:1}, chars:""},
+                  "Alt", "AltLeft", KeyboardEvent.DOM_VK_ALT, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RMENU,
+                   modifiers:{altRightKey:1}, chars:""},
+                  "Alt", "AltRight", KeyboardEvent.DOM_VK_ALT, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // Win keys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_LWIN,
+                   modifiers:{metaKey:1}, chars:""},
+                  "Meta", "MetaLeft", KeyboardEvent.DOM_VK_WIN, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_LEFT);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RWIN,
+                   modifiers:{metaRightKey:1}, chars:""},
+                  "Meta", "MetaRight", KeyboardEvent.DOM_VK_WIN, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_RIGHT);
+
+    // all keys on keyboard (keyCode test)
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_BACK,
+                   modifiers:{}, chars:"\u0008"},
+                  "Backspace", "Backspace", KeyboardEvent.DOM_VK_BACK_SPACE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_TAB,
+                   modifiers:{}, chars:"\t"},
+                  "Tab", "Tab", KeyboardEvent.DOM_VK_TAB, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RETURN,
+                   modifiers:{}, chars:"\r"},
+                  "Enter", "Enter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_PAUSE,
+                   modifiers:{}, chars:""},
+                  "Pause", "Pause", KeyboardEvent.DOM_VK_PAUSE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_KANA,
+                   modifiers:{}, chars:""},
+                  "Unidentified", "", KeyboardEvent.DOM_VK_KANA, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_JUNJA,
+                   modifiers:{}, chars:""},
+                  "JunjaMode", "", KeyboardEvent.DOM_VK_JUNJA, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_FINAL,
+                   modifiers:{}, chars:""},
+                  "FinalMode", "", KeyboardEvent.DOM_VK_FINAL, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_KANJI,
+                   modifiers:{}, chars:""},
+                  "Unidentified", "", KeyboardEvent.DOM_VK_KANJI, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_ESCAPE,
+                   modifiers:{}, chars:""},
+                  "Escape", "Escape", KeyboardEvent.DOM_VK_ESCAPE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_CONVERT,
+                   modifiers:{}, chars:""},
+                  "Convert", "", KeyboardEvent.DOM_VK_CONVERT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NONCONVERT,
+                   modifiers:{}, chars:""},
+                  "NonConvert", "", KeyboardEvent.DOM_VK_NONCONVERT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_ACCEPT,
+                   modifiers:{}, chars:""},
+                  "Accept", "", KeyboardEvent.DOM_VK_ACCEPT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_MODECHANGE,
+                   modifiers:{}, chars:""},
+                  "ModeChange", "", KeyboardEvent.DOM_VK_MODECHANGE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SPACE,
+                   modifiers:{}, chars:" "},
+                  " ", "Space", KeyboardEvent.DOM_VK_SPACE, " ", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Ctrl+Space causes WM_CHAR with ' '.  However, its keypress event's ctrlKey state shouldn't be false.
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SPACE,
+                   modifiers:{ctrlKey:1}, chars:" "},
+                  " ", "Space", KeyboardEvent.DOM_VK_SPACE, " ", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SELECT,
+                   modifiers:{}, chars:""},
+                  "Select", "", KeyboardEvent.DOM_VK_SELECT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_PRINT,
+                   modifiers:{}, chars:""},
+                  "Unidentified", "", KeyboardEvent.DOM_VK_PRINT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_EXECUTE,
+                   modifiers:{}, chars:""},
+                  "Execute", "", KeyboardEvent.DOM_VK_EXECUTE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SNAPSHOT,
+                   modifiers:{}, chars:""},
+                  "PrintScreen", "PrintScreen", KeyboardEvent.DOM_VK_PRINTSCREEN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_HELP,
+                   modifiers:{}, chars:""},
+                  "Help", "", KeyboardEvent.DOM_VK_HELP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SLEEP,
+                   modifiers:{}, chars:""},
+                  "Standby", "", KeyboardEvent.DOM_VK_SLEEP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_PRIOR,
+                   modifiers:{}, chars:""},
+                  "PageUp", "PageUp", KeyboardEvent.DOM_VK_PAGE_UP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NEXT,
+                   modifiers:{}, chars:""},
+                  "PageDown", "PageDown", KeyboardEvent.DOM_VK_PAGE_DOWN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_END,
+                   modifiers:{}, chars:""},
+                  "End", "End", KeyboardEvent.DOM_VK_END, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_HOME,
+                   modifiers:{}, chars:""},
+                  "Home", "Home", KeyboardEvent.DOM_VK_HOME, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_LEFT,
+                   modifiers:{}, chars:""},
+                  "ArrowLeft", "ArrowLeft", KeyboardEvent.DOM_VK_LEFT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_UP,
+                   modifiers:{}, chars:""},
+                  "ArrowUp", "ArrowUp", KeyboardEvent.DOM_VK_UP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RIGHT,
+                   modifiers:{}, chars:""},
+                  "ArrowRight", "ArrowRight", KeyboardEvent.DOM_VK_RIGHT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_DOWN,
+                   modifiers:{}, chars:""},
+                  "ArrowDown", "ArrowDown", KeyboardEvent.DOM_VK_DOWN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_INSERT,
+                   modifiers:{}, chars:""},
+                  "Insert", "Insert", KeyboardEvent.DOM_VK_INSERT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_DELETE,
+                   modifiers:{}, chars:""},
+                  "Delete", "Delete", KeyboardEvent.DOM_VK_DELETE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Backspace and Enter are handled with special path in mozilla::widget::NativeKey.  So, let's test them with modifiers too.
+    // Note that when both Ctrl and Alt are pressed, they don't cause WM_(SYS)CHAR message.
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_BACK,
+                   modifiers:{ctrlKey:1}, chars:"\u007F"},
+                  "Backspace", "Backspace", KeyboardEvent.DOM_VK_BACK_SPACE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_BACK,
+                   modifiers:{altKey:1}, chars:"\u0008"},
+                  "Backspace", "Backspace", KeyboardEvent.DOM_VK_BACK_SPACE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_BACK,
+                   modifiers:{ctrl:1, altKey:1}, chars:""},
+                  "Backspace", "Backspace", KeyboardEvent.DOM_VK_BACK_SPACE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RETURN,
+                   modifiers:{ctrlKey:1}, chars:"\n"},
+                  "Enter", "Enter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RETURN,
+                   modifiers:{altKey:1}, chars:"\r"},
+                  "Enter", "Enter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_RETURN,
+                   modifiers:{ctrl:1, altKey:1}, chars:""},
+                  "Enter", "Enter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Even non-printable key could be mapped as a printable key.
+    // Only "keyup" event cannot know if it *did* cause inputting text.
+    // Therefore, only "keydown" and "keypress" event's key value should be the character inputted by the key.
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F4,
+                   modifiers:{}, chars:"a"},
+                  ["a", "a", "F4"], "F4", KeyboardEvent.DOM_VK_F4, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Even if key message is processed by IME, when the key causes inputting text,
+    // keypress event(s) should be fired.
+    const WIN_VK_PROCESSKEY_WITH_SC_A = WIN_VK_PROCESSKEY | 0x001E0000;
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_PROCESSKEY_WITH_SC_A,
+                   modifiers:{}, chars:"a"},
+                  ["a", "a", "Process"], "KeyA", KeyboardEvent.DOM_VK_PROCESSKEY, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_PROCESSKEY_WITH_SC_A,
+                   modifiers:{altKey:1}, chars:"a"},
+                  ["a", "a", "Process"], "KeyA", KeyboardEvent.DOM_VK_PROCESSKEY, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // US
+    // Alphabet
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"A"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1}, chars:"\u0001"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0001"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1}, chars:"a"},
+                  "a", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"A"},
+                  "A", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_B,
+                   modifiers:{}, chars:"b"},
+                  "b", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_B,
+                   modifiers:{shiftKey:1}, chars:"B"},
+                  "B", "KeyB", KeyboardEvent.DOM_VK_B, "B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_B,
+                   modifiers:{ctrlKey:1}, chars:"\u0002"},
+                  "b", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_B,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0002"},
+                  "B", "KeyB", KeyboardEvent.DOM_VK_B, "B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_B,
+                   modifiers:{altKey:1}, chars:"b"},
+                  "b", "KeyB", KeyboardEvent.DOM_VK_B, "b", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_B,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"B"},
+                  "B", "KeyB", KeyboardEvent.DOM_VK_B, "B", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_C,
+                   modifiers:{}, chars:"c"},
+                  "c", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_C,
+                   modifiers:{shiftKey:1}, chars:"C"},
+                  "C", "KeyC", KeyboardEvent.DOM_VK_C, "C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_C,
+                   modifiers:{ctrlKey:1}, chars:"\u0003"},
+                  "c", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_C,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0003"},
+                  "C", "KeyC", KeyboardEvent.DOM_VK_C, "C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_C,
+                   modifiers:{altKey:1}, chars:"c"},
+                  "c", "KeyC", KeyboardEvent.DOM_VK_C, "c", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_C,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"C"},
+                  "C", "KeyC", KeyboardEvent.DOM_VK_C, "C", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_D,
+                   modifiers:{}, chars:"d"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_D,
+                   modifiers:{shiftKey:1}, chars:"D"},
+                  "D", "KeyD", KeyboardEvent.DOM_VK_D, "D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_D,
+                   modifiers:{ctrlKey:1}, chars:"\u0004"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_D,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0004"},
+                  "D", "KeyD", KeyboardEvent.DOM_VK_D, "D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_D,
+                   modifiers:{altKey:1}, chars:"d"},
+                  "d", "KeyD", KeyboardEvent.DOM_VK_D, "d", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_D,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"D"},
+                  "D", "KeyD", KeyboardEvent.DOM_VK_D, "D", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_E,
+                   modifiers:{}, chars:"e"},
+                  "e", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_E,
+                   modifiers:{shiftKey:1}, chars:"E"},
+                  "E", "KeyE", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_E,
+                   modifiers:{ctrlKey:1}, chars:"\u0005"},
+                  "e", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_E,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0005"},
+                  "E", "KeyE", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_E,
+                   modifiers:{altKey:1}, chars:"e"},
+                  "e", "KeyE", KeyboardEvent.DOM_VK_E, "e", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_E,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"E"},
+                  "E", "KeyE", KeyboardEvent.DOM_VK_E, "E", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                   modifiers:{}, chars:"f"},
+                  "f", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                   modifiers:{shiftKey:1}, chars:"F"},
+                  "F", "KeyF", KeyboardEvent.DOM_VK_F, "F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                   modifiers:{ctrlKey:1}, chars:"\u0006"},
+                  "f", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0006"},
+                  "F", "KeyF", KeyboardEvent.DOM_VK_F, "F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                   modifiers:{altKey:1}, chars:"f"},
+                  "f", "KeyF", KeyboardEvent.DOM_VK_F, "f", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"F"},
+                  "F", "KeyF", KeyboardEvent.DOM_VK_F, "F", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_G,
+                   modifiers:{}, chars:"g"},
+                  "g", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_G,
+                   modifiers:{shiftKey:1}, chars:"G"},
+                  "G", "KeyG", KeyboardEvent.DOM_VK_G, "G", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_G,
+                   modifiers:{ctrlKey:1}, chars:"\u0007"},
+                  "g", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_G,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0007"},
+                  "G", "KeyG", KeyboardEvent.DOM_VK_G, "G", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_G,
+                   modifiers:{altKey:1}, chars:"g"},
+                  "g", "KeyG", KeyboardEvent.DOM_VK_G, "g", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_G,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"G"},
+                  "G", "KeyG", KeyboardEvent.DOM_VK_G, "G", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_H,
+                   modifiers:{}, chars:"h"},
+                  "h", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_H,
+                   modifiers:{shiftKey:1}, chars:"H"},
+                  "H", "KeyH", KeyboardEvent.DOM_VK_H, "H", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_H,
+                   modifiers:{ctrlKey:1}, chars:"\u0008"},
+                  "h", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_H,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0008"},
+                  "H", "KeyH", KeyboardEvent.DOM_VK_H, "H", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_H,
+                   modifiers:{altKey:1}, chars:"h"},
+                  "h", "KeyH", KeyboardEvent.DOM_VK_H, "h", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_H,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"H"},
+                  "H", "KeyH", KeyboardEvent.DOM_VK_H, "H", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_I,
+                   modifiers:{}, chars:"i"},
+                  "i", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_I,
+                   modifiers:{shiftKey:1}, chars:"I"},
+                  "I", "KeyI", KeyboardEvent.DOM_VK_I, "I", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_I,
+                   modifiers:{ctrlKey:1}, chars:"\u0009"},
+                  "i", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_I,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0009"},
+                  "I", "KeyI", KeyboardEvent.DOM_VK_I, "I", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_I,
+                   modifiers:{altKey:1}, chars:"i"},
+                  "i", "KeyI", KeyboardEvent.DOM_VK_I, "i", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_I,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"I"},
+                  "I", "KeyI", KeyboardEvent.DOM_VK_I, "I", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_J,
+                   modifiers:{}, chars:"j"},
+                  "j", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_J,
+                   modifiers:{shiftKey:1}, chars:"J"},
+                  "J", "KeyJ", KeyboardEvent.DOM_VK_J, "J", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_J,
+                   modifiers:{ctrlKey:1}, chars:"\u000A"},
+                  "j", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_J,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000A"},
+                  "J", "KeyJ", KeyboardEvent.DOM_VK_J, "J", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_J,
+                   modifiers:{altKey:1}, chars:"j"},
+                  "j", "KeyJ", KeyboardEvent.DOM_VK_J, "j", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_J,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"J"},
+                  "J", "KeyJ", KeyboardEvent.DOM_VK_J, "J", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_K,
+                   modifiers:{}, chars:"k"},
+                  "k", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_K,
+                   modifiers:{shiftKey:1}, chars:"K"},
+                  "K", "KeyK", KeyboardEvent.DOM_VK_K, "K", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_K,
+                   modifiers:{ctrlKey:1}, chars:"\u000B"},
+                  "k", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_K,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000B"},
+                  "K", "KeyK", KeyboardEvent.DOM_VK_K, "K", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_K,
+                   modifiers:{altKey:1}, chars:"k"},
+                  "k", "KeyK", KeyboardEvent.DOM_VK_K, "k", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_K,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"K"},
+                  "K", "KeyK", KeyboardEvent.DOM_VK_K, "K", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_L,
+                   modifiers:{}, chars:"l"},
+                  "l", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_L,
+                   modifiers:{shiftKey:1}, chars:"L"},
+                  "L", "KeyL", KeyboardEvent.DOM_VK_L, "L", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_L,
+                   modifiers:{ctrlKey:1}, chars:"\u000C"},
+                  "l", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_L,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000C"},
+                  "L", "KeyL", KeyboardEvent.DOM_VK_L, "L", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_L,
+                   modifiers:{altKey:1}, chars:"l"},
+                  "l", "KeyL", KeyboardEvent.DOM_VK_L, "l", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_L,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"L"},
+                  "L", "KeyL", KeyboardEvent.DOM_VK_L, "L", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_M,
+                   modifiers:{}, chars:"m"},
+                  "m", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_M,
+                   modifiers:{shiftKey:1}, chars:"M"},
+                  "M", "KeyM", KeyboardEvent.DOM_VK_M, "M", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_M,
+                   modifiers:{ctrlKey:1}, chars:"\u000D"},
+                  "m", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_M,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000D"},
+                  "M", "KeyM", KeyboardEvent.DOM_VK_M, "M", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_M,
+                   modifiers:{altKey:1}, chars:"m"},
+                  "m", "KeyM", KeyboardEvent.DOM_VK_M, "m", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_M,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"M"},
+                  "M", "KeyM", KeyboardEvent.DOM_VK_M, "M", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_N,
+                   modifiers:{}, chars:"n"},
+                  "n", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_N,
+                   modifiers:{shiftKey:1}, chars:"N"},
+                  "N", "KeyN", KeyboardEvent.DOM_VK_N, "N", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_N,
+                   modifiers:{ctrlKey:1}, chars:"\u000E"},
+                  "n", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_N,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000E"},
+                  "N", "KeyN", KeyboardEvent.DOM_VK_N, "N", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_N,
+                   modifiers:{altKey:1}, chars:"n"},
+                  "n", "KeyN", KeyboardEvent.DOM_VK_N, "n", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_N,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"N"},
+                  "N", "KeyN", KeyboardEvent.DOM_VK_N, "N", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_O,
+                   modifiers:{}, chars:"o"},
+                  "o", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_O,
+                   modifiers:{shiftKey:1}, chars:"O"},
+                  "O", "KeyO", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_O,
+                   modifiers:{ctrlKey:1}, chars:"\u000F"},
+                  "o", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_O,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u000F"},
+                  "O", "KeyO", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_O,
+                   modifiers:{altKey:1}, chars:"o"},
+                  "o", "KeyO", KeyboardEvent.DOM_VK_O, "o", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_O,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"O"},
+                  "O", "KeyO", KeyboardEvent.DOM_VK_O, "O", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_P,
+                   modifiers:{}, chars:"p"},
+                  "p", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_P,
+                   modifiers:{shiftKey:1}, chars:"P"},
+                  "P", "KeyP", KeyboardEvent.DOM_VK_P, "P", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_P,
+                   modifiers:{ctrlKey:1}, chars:"\u0010"},
+                  "p", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_P,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0010"},
+                  "P", "KeyP", KeyboardEvent.DOM_VK_P, "P", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_P,
+                   modifiers:{altKey:1}, chars:"p"},
+                  "p", "KeyP", KeyboardEvent.DOM_VK_P, "p", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_P,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"P"},
+                  "P", "KeyP", KeyboardEvent.DOM_VK_P, "P", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Q,
+                   modifiers:{}, chars:"q"},
+                  "q", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Q,
+                   modifiers:{shiftKey:1}, chars:"Q"},
+                  "Q", "KeyQ", KeyboardEvent.DOM_VK_Q, "Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Q,
+                   modifiers:{ctrlKey:1}, chars:"\u0011"},
+                  "q", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Q,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0011"},
+                  "Q", "KeyQ", KeyboardEvent.DOM_VK_Q, "Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Q,
+                   modifiers:{altKey:1}, chars:"q"},
+                  "q", "KeyQ", KeyboardEvent.DOM_VK_Q, "q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Q,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"Q"},
+                  "Q", "KeyQ", KeyboardEvent.DOM_VK_Q, "Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_R,
+                   modifiers:{}, chars:"r"},
+                  "r", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_R,
+                   modifiers:{shiftKey:1}, chars:"R"},
+                  "R", "KeyR", KeyboardEvent.DOM_VK_R, "R", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_R,
+                   modifiers:{ctrlKey:1}, chars:"\u0012"},
+                  "r", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_R,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0012"},
+                  "R", "KeyR", KeyboardEvent.DOM_VK_R, "R", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_R,
+                   modifiers:{altKey:1}, chars:"r"},
+                  "r", "KeyR", KeyboardEvent.DOM_VK_R, "r", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_R,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"R"},
+                  "R", "KeyR", KeyboardEvent.DOM_VK_R, "R", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_S,
+                   modifiers:{}, chars:"s"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_S,
+                   modifiers:{shiftKey:1}, chars:"S"},
+                  "S", "KeyS", KeyboardEvent.DOM_VK_S, "S", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_S,
+                   modifiers:{ctrlKey:1}, chars:"\u0013"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_S,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0013"},
+                  "S", "KeyS", KeyboardEvent.DOM_VK_S, "S", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_S,
+                   modifiers:{altKey:1}, chars:"s"},
+                  "s", "KeyS", KeyboardEvent.DOM_VK_S, "s", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_S,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"S"},
+                  "S", "KeyS", KeyboardEvent.DOM_VK_S, "S", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                   modifiers:{}, chars:"t"},
+                  "t", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                   modifiers:{shiftKey:1}, chars:"T"},
+                  "T", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                   modifiers:{ctrlKey:1}, chars:"\u0014"},
+                  "t", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0014"},
+                  "T", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                   modifiers:{altKey:1}, chars:"t"},
+                  "t", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"T"},
+                  "T", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_U,
+                   modifiers:{}, chars:"u"},
+                  "u", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_U,
+                   modifiers:{shiftKey:1}, chars:"U"},
+                  "U", "KeyU", KeyboardEvent.DOM_VK_U, "U", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_U,
+                   modifiers:{ctrlKey:1}, chars:"\u0015"},
+                  "u", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_U,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0015"},
+                  "U", "KeyU", KeyboardEvent.DOM_VK_U, "U", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_U,
+                   modifiers:{altKey:1}, chars:"u"},
+                  "u", "KeyU", KeyboardEvent.DOM_VK_U, "u", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_U,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"U"},
+                  "U", "KeyU", KeyboardEvent.DOM_VK_U, "U", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_V,
+                   modifiers:{}, chars:"v"},
+                  "v", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_V,
+                   modifiers:{shiftKey:1}, chars:"V"},
+                  "V", "KeyV", KeyboardEvent.DOM_VK_V, "V", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_V,
+                   modifiers:{ctrlKey:1}, chars:"\u0016"},
+                  "v", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_V,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0016"},
+                  "V", "KeyV", KeyboardEvent.DOM_VK_V, "V", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_V,
+                   modifiers:{altKey:1}, chars:"v"},
+                  "v", "KeyV", KeyboardEvent.DOM_VK_V, "v", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_V,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"V"},
+                  "V", "KeyV", KeyboardEvent.DOM_VK_V, "V", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_W,
+                   modifiers:{}, chars:"w"},
+                  "w", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_W,
+                   modifiers:{shiftKey:1}, chars:"W"},
+                  "W", "KeyW", KeyboardEvent.DOM_VK_W, "W", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_W,
+                   modifiers:{ctrlKey:1}, chars:"\u0017"},
+                  "w", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_W,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0017"},
+                  "W", "KeyW", KeyboardEvent.DOM_VK_W, "W", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_W,
+                   modifiers:{altKey:1}, chars:"w"},
+                  "w", "KeyW", KeyboardEvent.DOM_VK_W, "w", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_W,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"W"},
+                  "W", "KeyW", KeyboardEvent.DOM_VK_W, "W", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                   modifiers:{}, chars:"x"},
+                  "x", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                   modifiers:{shiftKey:1}, chars:"X"},
+                  "X", "KeyX", KeyboardEvent.DOM_VK_X, "X", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                   modifiers:{ctrlKey:1}, chars:"\u0018"},
+                  "x", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0018"},
+                  "X", "KeyX", KeyboardEvent.DOM_VK_X, "X", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                   modifiers:{altKey:1}, chars:"x"},
+                  "x", "KeyX", KeyboardEvent.DOM_VK_X, "x", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"X"},
+                  "X", "KeyX", KeyboardEvent.DOM_VK_X, "X", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Y,
+                   modifiers:{}, chars:"y"},
+                  "y", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Y,
+                   modifiers:{shiftKey:1}, chars:"Y"},
+                  "Y", "KeyY", KeyboardEvent.DOM_VK_Y, "Y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Y,
+                   modifiers:{ctrlKey:1}, chars:"\u0019"},
+                  "y", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Y,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0019"},
+                  "Y", "KeyY", KeyboardEvent.DOM_VK_Y, "Y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Y,
+                   modifiers:{altKey:1}, chars:"y"},
+                  "y", "KeyY", KeyboardEvent.DOM_VK_Y, "y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Y,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"Y"},
+                  "Y", "KeyY", KeyboardEvent.DOM_VK_Y, "Y", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Z,
+                   modifiers:{}, chars:"z"},
+                  "z", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Z,
+                   modifiers:{shiftKey:1}, chars:"Z"},
+                  "Z", "KeyZ", KeyboardEvent.DOM_VK_Z, "Z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Z,
+                   modifiers:{ctrlKey:1}, chars:"\u001A"},
+                  "z", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Z,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001A"},
+                  "Z", "KeyZ", KeyboardEvent.DOM_VK_Z, "Z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Z,
+                   modifiers:{altKey:1}, chars:"z"},
+                  "z", "KeyZ", KeyboardEvent.DOM_VK_Z, "z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_Z,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"Z"},
+                  "Z", "KeyZ", KeyboardEvent.DOM_VK_Z, "Z", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Numeric
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_0,
+                   modifiers:{}, chars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_0,
+                   modifiers:{shiftKey:1}, chars:")"},
+                  ")", "Digit0", KeyboardEvent.DOM_VK_0, ")", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_0,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_0,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  ")", "Digit0", KeyboardEvent.DOM_VK_0, ")", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_0,
+                   modifiers:{altKey:1}, chars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_0,
+                   modifiers:{altKey:1, shiftKey:1}, chars:")"},
+                  ")", "Digit0", KeyboardEvent.DOM_VK_0, ")", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_1,
+                   modifiers:{}, chars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_1,
+                   modifiers:{shiftKey:1}, chars:"!"},
+                  "!", "Digit1", KeyboardEvent.DOM_VK_1, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_1,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_1,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "!", "Digit1", KeyboardEvent.DOM_VK_1, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_1,
+                   modifiers:{altKey:1}, chars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"!"},
+                  "!", "Digit1", KeyboardEvent.DOM_VK_1, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_2,
+                   modifiers:{}, chars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_2,
+                   modifiers:{shiftKey:1}, chars:"@"},
+                  "@", "Digit2", KeyboardEvent.DOM_VK_2, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_2,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_2,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "@", "Digit2", KeyboardEvent.DOM_VK_2, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_2,
+                   modifiers:{altKey:1}, chars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_2,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"@"},
+                  "@", "Digit2", KeyboardEvent.DOM_VK_2, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_3,
+                   modifiers:{}, chars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_3,
+                   modifiers:{shiftKey:1}, chars:"#"},
+                  "#", "Digit3", KeyboardEvent.DOM_VK_3, "#", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_3,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_3,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "#", "Digit3", KeyboardEvent.DOM_VK_3, "#", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_3,
+                   modifiers:{altKey:1}, chars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_3,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"#"},
+                  "#", "Digit3", KeyboardEvent.DOM_VK_3, "#", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_4,
+                   modifiers:{}, chars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_4,
+                   modifiers:{shiftKey:1}, chars:"$"},
+                  "$", "Digit4", KeyboardEvent.DOM_VK_4, "$", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_4,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_4,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "$", "Digit4", KeyboardEvent.DOM_VK_4, "$", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_4,
+                   modifiers:{altKey:1}, chars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_4,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"$"},
+                  "$", "Digit4", KeyboardEvent.DOM_VK_4, "$", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_5,
+                   modifiers:{}, chars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_5,
+                   modifiers:{shiftKey:1}, chars:"%"},
+                  "%", "Digit5", KeyboardEvent.DOM_VK_5, "%", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_5,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_5,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "%", "Digit5", KeyboardEvent.DOM_VK_5, "%", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_5,
+                   modifiers:{altKey:1}, chars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_5,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"%"},
+                  "%", "Digit5", KeyboardEvent.DOM_VK_5, "%", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_6,
+                   modifiers:{}, chars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_6,
+                   modifiers:{shiftKey:1}, chars:"^"},
+                  "^", "Digit6", KeyboardEvent.DOM_VK_6, "^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_6,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_6,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001E"},
+                  "^", "Digit6", KeyboardEvent.DOM_VK_6, "^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_6,
+                   modifiers:{altKey:1}, chars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_6,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"^"},
+                  "^", "Digit6", KeyboardEvent.DOM_VK_6, "^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_7,
+                   modifiers:{}, chars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_7,
+                   modifiers:{shiftKey:1}, chars:"&"},
+                  "&", "Digit7", KeyboardEvent.DOM_VK_7, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_7,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_7,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "&", "Digit7", KeyboardEvent.DOM_VK_7, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_7,
+                   modifiers:{altKey:1}, chars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_7,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"&"},
+                  "&", "Digit7", KeyboardEvent.DOM_VK_7, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_8,
+                   modifiers:{}, chars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_8,
+                   modifiers:{shiftKey:1}, chars:"*"},
+                  "*", "Digit8", KeyboardEvent.DOM_VK_8, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_8,
+                   modifiers:{ctrlKey:1, }, chars:""},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_8,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "*", "Digit8", KeyboardEvent.DOM_VK_8, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_8,
+                   modifiers:{altKey:1}, chars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_8,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"*"},
+                  "*", "Digit8", KeyboardEvent.DOM_VK_8, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_9,
+                   modifiers:{}, chars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_9,
+                   modifiers:{shiftKey:1}, chars:"("},
+                  "(", "Digit9", KeyboardEvent.DOM_VK_9, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_9,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_9,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "(", "Digit9", KeyboardEvent.DOM_VK_9, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_9,
+                   modifiers:{altKey:1}, chars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_9,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"("},
+                  "(", "Digit9", KeyboardEvent.DOM_VK_9, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // OEM keys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_MINUS,
+                   modifiers:{}, chars:"-"},
+                  "-", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_MINUS,
+                   modifiers:{shiftKey:1}, chars:"_"},
+                  "_", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_MINUS,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "-", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_MINUS,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u001F"},
+                  "_", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_MINUS,
+                   modifiers:{altKey:1}, chars:"-"},
+                  "-", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_MINUS,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"_"},
+                  "_", "Minus", KeyboardEvent.DOM_VK_HYPHEN_MINUS, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{}, chars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{shiftKey:1}, chars:"+"},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{altKey:1}, chars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"+"},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_4,
+                   modifiers:{}, chars:"["},
+                  "[", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "[", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_4,
+                   modifiers:{shiftKey:1}, chars:"{"},
+                  "{", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "{", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_4,
+                   modifiers:{ctrlKey:1}, chars:"\u001B"},
+                  "[", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "[", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_4,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "{", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "{", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_4,
+                   modifiers:{altKey:1}, chars:"["},
+                  "[", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "[", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_4,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"{"},
+                  "{", "BracketLeft", KeyboardEvent.DOM_VK_OPEN_BRACKET, "{", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_6,
+                   modifiers:{}, chars:"]"},
+                  "]", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "]", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_6,
+                   modifiers:{shiftKey:1}, chars:"}"},
+                  "}", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "}", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_6,
+                   modifiers:{ctrlKey:1}, chars:"\u001D"},
+                  "]", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "]", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_6,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "}", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "}", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_6,
+                   modifiers:{altKey:1}, chars:"]"},
+                  "]", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "]", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_6,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"}"},
+                  "}", "BracketRight", KeyboardEvent.DOM_VK_CLOSE_BRACKET, "}", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:";"},
+                  ";", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:":"},
+                  ":", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ":", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  ";", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  ":", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ":", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1}, chars:";"},
+                  ";", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:":"},
+                  ":", "Semicolon", KeyboardEvent.DOM_VK_SEMICOLON, ":", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:"'"},
+                  "'", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:"\""},
+                  "\"", "Quote", KeyboardEvent.DOM_VK_QUOTE, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "'", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "\"", "Quote", KeyboardEvent.DOM_VK_QUOTE, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                   modifiers:{altKey:1}, chars:"'"},
+                  "'", "Quote", KeyboardEvent.DOM_VK_QUOTE, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\""},
+                  "\"", "Quote", KeyboardEvent.DOM_VK_QUOTE, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_5,
+                   modifiers:{}, chars:"\\"},
+                  "\\", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\\", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_5,
+                   modifiers:{shiftKey:1}, chars:"|"},
+                  "|", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "|", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_5,
+                   modifiers:{ctrlKey:1}, chars:"\u001C"},
+                  "\\", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\\", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_5,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "|", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "|", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_5,
+                   modifiers:{altKey:1}, chars:"\\"},
+                  "\\", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "\\", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_5,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"|"},
+                  "|", "Backslash", KeyboardEvent.DOM_VK_BACK_SLASH, "|", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{}, chars:","},
+                  ",", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{shiftKey:1}, chars:"<"},
+                  "<", "Comma", KeyboardEvent.DOM_VK_COMMA, "<", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  ",", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "<", "Comma", KeyboardEvent.DOM_VK_COMMA, "<", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{altKey:1}, chars:","},
+                  ",", "Comma", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"<"},
+                  "<", "Comma", KeyboardEvent.DOM_VK_COMMA, "<", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{}, chars:"."},
+                  ".", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{shiftKey:1}, chars:">"},
+                  ">", "Period", KeyboardEvent.DOM_VK_PERIOD, ">", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  ".", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  ">", "Period", KeyboardEvent.DOM_VK_PERIOD, ">", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{altKey:1}, chars:"."},
+                  ".", "Period", KeyboardEvent.DOM_VK_PERIOD, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{altKey:1, shiftKey:1}, chars:">"},
+                  ">", "Period", KeyboardEvent.DOM_VK_PERIOD, ">", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_2,
+                   modifiers:{}, chars:"/"},
+                  "/", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_2,
+                   modifiers:{shiftKey:1}, chars:"?"},
+                  "?", "Slash", KeyboardEvent.DOM_VK_SLASH, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_2,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "/", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_2,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "?", "Slash", KeyboardEvent.DOM_VK_SLASH, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_2,
+                   modifiers:{altKey:1}, chars:"/"},
+                  "/", "Slash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_2,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"?"},
+                  "?", "Slash", KeyboardEvent.DOM_VK_SLASH, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_3,
+                   modifiers:{}, chars:"`"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_3,
+                   modifiers:{shiftKey:1}, chars:"~"},
+                  "~", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "~", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_3,
+                   modifiers:{ctrlKey:1}, chars:""},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_3,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "~", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "~", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_3,
+                   modifiers:{altKey:1}, chars:"`"},
+                  "`", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "`", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_3,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"~"},
+                  "~", "Backquote", KeyboardEvent.DOM_VK_BACK_QUOTE, "~", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Numpad
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD0,
+                   modifiers:{numLockKey:1}, chars:"0"},
+                  "0", "Numpad0", KeyboardEvent.DOM_VK_NUMPAD0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD1,
+                   modifiers:{numLockKey:1}, chars:"1"},
+                  "1", "Numpad1", KeyboardEvent.DOM_VK_NUMPAD1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD2,
+                   modifiers:{numLockKey:1}, chars:"2"},
+                  "2", "Numpad2", KeyboardEvent.DOM_VK_NUMPAD2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD3,
+                   modifiers:{numLockKey:1}, chars:"3"},
+                  "3", "Numpad3", KeyboardEvent.DOM_VK_NUMPAD3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD4,
+                   modifiers:{numLockKey:1}, chars:"4"},
+                  "4", "Numpad4", KeyboardEvent.DOM_VK_NUMPAD4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD5,
+                   modifiers:{numLockKey:1}, chars:"5"},
+                  "5", "Numpad5", KeyboardEvent.DOM_VK_NUMPAD5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD6,
+                   modifiers:{numLockKey:1}, chars:"6"},
+                  "6", "Numpad6", KeyboardEvent.DOM_VK_NUMPAD6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD7,
+                   modifiers:{numLockKey:1}, chars:"7"},
+                  "7", "Numpad7", KeyboardEvent.DOM_VK_NUMPAD7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD8,
+                   modifiers:{numLockKey:1}, chars:"8"},
+                  "8", "Numpad8", KeyboardEvent.DOM_VK_NUMPAD8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD9,
+                   modifiers:{numLockKey:1}, chars:"9"},
+                  "9", "Numpad9", KeyboardEvent.DOM_VK_NUMPAD9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_MULTIPLY,
+                   modifiers:{numLockKey:1}, chars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_MULTIPLY,
+                   modifiers:{numLockKey:1, shiftKey:1}, chars:"*"},
+                  "*", "NumpadMultiply", KeyboardEvent.DOM_VK_MULTIPLY, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_ADD,
+                   modifiers:{numLockKey:1}, chars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_ADD,
+                   modifiers:{numLockKey:1, shiftKey:1}, chars:"+"},
+                  "+", "NumpadAdd", KeyboardEvent.DOM_VK_ADD, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    // VK_SEPARATOR is keycode for NEC's PC-98 series whose keyboard layout was
+    // different from current PC's keyboard layout and it cannot connect to
+    // current PC.  Note that even if we synthesize WM_KEYDOWN with
+    // VK_SEPARATOR, it doesn't work on Win7.
+    //yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SEPARATOR,
+    //               modifiers:{numLockKey:1}, chars:""},
+    //              "", "", KeyboardEvent.DOM_VK_SEPARATOR, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    //yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SEPARATOR,
+    //               modifiers:{numLockKey:1, shiftKey:1}, chars:""},
+    //              "", "", KeyboardEvent.DOM_VK_SEPARATOR, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SUBTRACT,
+                   modifiers:{numLockKey:1}, chars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_SUBTRACT,
+                   modifiers:{numLockKey:1, shiftKey:1}, chars:"-"},
+                  "-", "NumpadSubtract", KeyboardEvent.DOM_VK_SUBTRACT, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_DECIMAL,
+                   modifiers:{numLockKey:1}, chars:"."},
+                  ".", "NumpadDecimal", KeyboardEvent.DOM_VK_DECIMAL, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_DECIMAL,
+                   modifiers:{numLockKey:1, shiftKey:1}, chars:"."},
+                  ".", "NumpadDecimal", KeyboardEvent.DOM_VK_DECIMAL, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_DIVIDE,
+                   modifiers:{numLockKey:1}, chars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_DIVIDE,
+                   modifiers:{numLockKey:1, shiftKey:1}, chars:"/"},
+                  "/", "NumpadDivide", KeyboardEvent.DOM_VK_DIVIDE, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_RETURN,
+                   modifiers:{numLockKey:1}, chars:"\r"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_RETURN,
+                   modifiers:{numLockKey:1, shiftKey:1}, chars:"\r"},
+                  "Enter", "NumpadEnter", KeyboardEvent.DOM_VK_RETURN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+
+    // Numpad without NumLock
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_PRIOR,
+                   modifiers:{}, chars:""},
+                  "PageUp", "Numpad9", KeyboardEvent.DOM_VK_PAGE_UP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_NEXT,
+                   modifiers:{}, chars:""},
+                  "PageDown", "Numpad3", KeyboardEvent.DOM_VK_PAGE_DOWN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_END,
+                   modifiers:{}, chars:""},
+                  "End", "Numpad1", KeyboardEvent.DOM_VK_END, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_HOME,
+                   modifiers:{}, chars:""},
+                  "Home", "Numpad7", KeyboardEvent.DOM_VK_HOME, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_LEFT,
+                   modifiers:{}, chars:""},
+                  "ArrowLeft", "Numpad4", KeyboardEvent.DOM_VK_LEFT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_UP,
+                   modifiers:{}, chars:""},
+                  "ArrowUp", "Numpad8", KeyboardEvent.DOM_VK_UP, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_RIGHT,
+                   modifiers:{}, chars:""},
+                  "ArrowRight", "Numpad6", KeyboardEvent.DOM_VK_RIGHT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_DOWN,
+                   modifiers:{}, chars:""},
+                  "ArrowDown", "Numpad2", KeyboardEvent.DOM_VK_DOWN, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_INSERT,
+                   modifiers:{}, chars:""},
+                  "Insert", "Numpad0", KeyboardEvent.DOM_VK_INSERT, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_NUMPAD_DELETE,
+                   modifiers:{}, chars:""},
+                  "Delete", "NumpadDecimal", KeyboardEvent.DOM_VK_DELETE, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_CLEAR,
+                   modifiers:{}, chars:""},
+                  "Clear", "Numpad5", KeyboardEvent.DOM_VK_CLEAR, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+
+    // Even if widget receives unknown keycode, it should dispatch key events
+    // whose keycode is 0 rather than native keycode.
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:0x3A,
+                   modifiers:{numLockKey:1}, chars:""},
+                  "Unidentified", "", 0, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // French
+    // Numeric
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{}, chars:"\u00E0"},
+                  "\u00E0", "Digit0", KeyboardEvent.DOM_VK_0, "\u00E0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{shiftKey:1}, chars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{}, chars:"&"},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{shiftKey:1}, chars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_2,
+                   modifiers:{}, chars:"\u00E9"},
+                  "\u00E9", "Digit2", KeyboardEvent.DOM_VK_2, "\u00E9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_2,
+                   modifiers:{shiftKey:1}, chars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_3,
+                   modifiers:{}, chars:"\""},
+                  "\"", "Digit3", KeyboardEvent.DOM_VK_3, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_3,
+                   modifiers:{shiftKey:1}, chars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_4,
+                   modifiers:{}, chars:"'"},
+                  "'", "Digit4", KeyboardEvent.DOM_VK_4, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_4,
+                   modifiers:{shiftKey:1}, chars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_5,
+                   modifiers:{}, chars:"("},
+                  "(", "Digit5", KeyboardEvent.DOM_VK_5, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_5,
+                   modifiers:{shiftKey:1}, chars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_6,
+                   modifiers:{}, chars:"-"},
+                  "-", "Digit6", KeyboardEvent.DOM_VK_6, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_6,
+                   modifiers:{shiftKey:1}, chars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_7,
+                   modifiers:{}, chars:"\u00E8"},
+                  "\u00E8", "Digit7", KeyboardEvent.DOM_VK_7, "\u00E8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_7,
+                   modifiers:{shiftKey:1}, chars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_8,
+                   modifiers:{}, chars:"_"},
+                  "_", "Digit8", KeyboardEvent.DOM_VK_8, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_8,
+                   modifiers:{shiftKey:1}, chars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_9,
+                   modifiers:{}, chars:"\u00E7"},
+                  "\u00E7", "Digit9", KeyboardEvent.DOM_VK_9, "\u00E7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_9,
+                   modifiers:{shiftKey:1}, chars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Numeric with ShiftLock
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{capsLockKey:1}, chars:"0"},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"\u00E0"},
+                  "\u00E0", "Digit0", KeyboardEvent.DOM_VK_0, "\u00E0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{capsLockKey:1}, chars:"1"},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"&"},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_2,
+                   modifiers:{capsLockKey:1}, chars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_2,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"\u00E9"},
+                  "\u00E9", "Digit2", KeyboardEvent.DOM_VK_2, "\u00E9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_3,
+                   modifiers:{capsLockKey:1}, chars:"3"},
+                  "3", "Digit3", KeyboardEvent.DOM_VK_3, "3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_3,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"\""},
+                  "\"", "Digit3", KeyboardEvent.DOM_VK_3, "\"", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_4,
+                   modifiers:{capsLockKey:1}, chars:"4"},
+                  "4", "Digit4", KeyboardEvent.DOM_VK_4, "4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_4,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"'"},
+                  "'", "Digit4", KeyboardEvent.DOM_VK_4, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_5,
+                   modifiers:{capsLockKey:1}, chars:"5"},
+                  "5", "Digit5", KeyboardEvent.DOM_VK_5, "5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_5,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"("},
+                  "(", "Digit5", KeyboardEvent.DOM_VK_5, "(", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_6,
+                   modifiers:{capsLockKey:1}, chars:"6"},
+                  "6", "Digit6", KeyboardEvent.DOM_VK_6, "6", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_6,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"-"},
+                  "-", "Digit6", KeyboardEvent.DOM_VK_6, "-", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_7,
+                   modifiers:{capsLockKey:1}, chars:"7"},
+                  "7", "Digit7", KeyboardEvent.DOM_VK_7, "7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_7,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"\u00E8"},
+                  "\u00E8", "Digit7", KeyboardEvent.DOM_VK_7, "\u00E8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_8,
+                   modifiers:{capsLockKey:1}, chars:"8"},
+                  "8", "Digit8", KeyboardEvent.DOM_VK_8, "8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_8,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"_"},
+                  "_", "Digit8", KeyboardEvent.DOM_VK_8, "_", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_9,
+                   modifiers:{capsLockKey:1}, chars:"9"},
+                  "9", "Digit9", KeyboardEvent.DOM_VK_9, "9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_9,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"\u00E7"},
+                  "\u00E7", "Digit9", KeyboardEvent.DOM_VK_9, "\u00E7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // OEM keys
+    // If the key doesn't cause ASCII character even with or without Shift key, keyCode value should be same as
+    // the key which causes the virtual keycode on ANSI keyboard layout.
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:"\u00B2"},
+                  "\u00B2", "Backquote", KeyboardEvent.DOM_VK_QUOTE, "\u00B2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "", "Backquote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_4,
+                   modifiers:{}, chars:")"},
+                  ")", "Minus", KeyboardEvent.DOM_VK_CLOSE_PAREN, ")", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_4,
+                   modifiers:{shiftKey:1}, chars:"\u00B0"},
+                  "\u00B0", "Minus", KeyboardEvent.DOM_VK_CLOSE_PAREN, "\u00B0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{}, chars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{shiftKey:1}, chars:"+"},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    //yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+    //               modifiers:{}, chars:""},
+    //              "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // Dead-key
+    //yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+    //               modifiers:{shiftKey:1}, chars:""},
+    //              ["^^", "^", "^", "^"], "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // Dead-key
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:"$"},
+                  "$", "BracketRight", KeyboardEvent.DOM_VK_DOLLAR, "$", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:"\u00A3"},
+                  "\u00A3", "BracketRight", KeyboardEvent.DOM_VK_DOLLAR, "\u00A3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_3,
+                   modifiers:{}, chars:"\u00F9"},
+                  "\u00F9", "Quote", KeyboardEvent.DOM_VK_PERCENT, "\u00F9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_3,
+                   modifiers:{shiftKey:1}, chars:"%"},
+                  "%", "Quote", KeyboardEvent.DOM_VK_PERCENT, "%", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_5,
+                   modifiers:{}, chars:"*"},
+                  "*", "Backslash", KeyboardEvent.DOM_VK_ASTERISK, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_5,
+                   modifiers:{shiftKey:1}, chars:"\u00B5"},
+                  "\u00B5", "Backslash", KeyboardEvent.DOM_VK_ASTERISK, "\u00B5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_102,
+                   modifiers:{}, chars:"<"},
+                  "<", "IntlBackslash", KeyboardEvent.DOM_VK_LESS_THAN, "<", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_102,
+                   modifiers:{shiftKey:1}, chars:">"},
+                  ">", "IntlBackslash", KeyboardEvent.DOM_VK_LESS_THAN, ">", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{}, chars:","},
+                  ",", "KeyM", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{shiftKey:1}, chars:"?"},
+                  "?", "KeyM", KeyboardEvent.DOM_VK_COMMA, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{}, chars:";"},
+                  ";", "Comma", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{shiftKey:1}, chars:"."},
+                  ".", "Comma", KeyboardEvent.DOM_VK_SEMICOLON, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_2,
+                   modifiers:{}, chars:":"},
+                  ":", "Period", KeyboardEvent.DOM_VK_COLON, ":", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_2,
+                   modifiers:{shiftKey:1}, chars:"/"},
+                  "/", "Period", KeyboardEvent.DOM_VK_COLON, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_8,
+                   modifiers:{}, chars:"!"},
+                  "!", "Slash", KeyboardEvent.DOM_VK_EXCLAMATION, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_8,
+                   modifiers:{shiftKey:1}, chars:"\u00A7"},
+                  "\u00A7", "Slash", KeyboardEvent.DOM_VK_EXCLAMATION, "\u00A7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // OEM keys with ShiftLock
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{capsLockKey:1}, chars:"\u00B2"},
+                  "\u00B2", "Backquote", KeyboardEvent.DOM_VK_QUOTE, "\u00B2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:""},
+                  "", "Backquote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_4,
+                   modifiers:{capsLockKey:1}, chars:"\u00B0"},
+                  "\u00B0", "Minus", KeyboardEvent.DOM_VK_CLOSE_PAREN, "\u00B0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_4,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:")"},
+                  ")", "Minus", KeyboardEvent.DOM_VK_CLOSE_PAREN, ")", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{capsLockKey:1}, chars:"+"},
+                  "+", "Equal", KeyboardEvent.DOM_VK_EQUALS, "+", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"="},
+                  "=", "Equal", KeyboardEvent.DOM_VK_EQUALS, "=", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    //yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+    //               modifiers:{capsLockKey:1}, chars:""},
+    //              "Dead", "BracketLeft", KeyboardLayout.DOM_VK_CLOSE_BRACKET, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // Dead-key
+    //yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+    //               modifiers:{capsLockKey:1, shiftKey:1}, chars:""},
+    //              ["\u00A8\u00A8", "\u00A8", "\u00A8", "\u00A8"], "BracketLeft", KeyboardLayout.DOM_VK_CLOSE_BRACKET, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // Dead-key
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{capsLockKey:1}, chars:"\u00A3"},
+                  "\u00A3", "BracketRight", KeyboardEvent.DOM_VK_DOLLAR, "\u00A3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"$"},
+                  "$", "BracketRight", KeyboardEvent.DOM_VK_DOLLAR, "$", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_3,
+                   modifiers:{capsLockKey:1}, chars:"%"},
+                  "%", "Quote", KeyboardEvent.DOM_VK_PERCENT, "%", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_3,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"\u00F9"},
+                  "\u00F9", "Quote", KeyboardEvent.DOM_VK_PERCENT, "\u00F9", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_5,
+                   modifiers:{capsLockKey:1}, chars:"\u00B5"},
+                  "\u00B5", "Backslash", KeyboardEvent.DOM_VK_ASTERISK, "\u00B5", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_5,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"*"},
+                  "*", "Backslash", KeyboardEvent.DOM_VK_ASTERISK, "*", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_102,
+                   modifiers:{capsLockKey:1}, chars:"<"},
+                  "<", "IntlBackslash", KeyboardEvent.DOM_VK_LESS_THAN, "<", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_102,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:">"},
+                  ">", "IntlBackslash", KeyboardEvent.DOM_VK_LESS_THAN, ">", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{capsLockKey:1}, chars:"?"},
+                  "?", "KeyM", KeyboardEvent.DOM_VK_COMMA, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_COMMA,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:","},
+                  ",", "KeyM", KeyboardEvent.DOM_VK_COMMA, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{capsLockKey:1}, chars:"."},
+                  ".", "Comma", KeyboardEvent.DOM_VK_SEMICOLON, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:";"},
+                  ";", "Comma", KeyboardEvent.DOM_VK_SEMICOLON, ";", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_2,
+                   modifiers:{capsLockKey:1}, chars:"/"},
+                  "/", "Period", KeyboardEvent.DOM_VK_COLON, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_2,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:":"},
+                  ":", "Period", KeyboardEvent.DOM_VK_COLON, ":", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_8,
+                   modifiers:{capsLockKey:1}, chars:"\u00A7"},
+                  "\u00A7", "Slash", KeyboardEvent.DOM_VK_EXCLAMATION, "\u00A7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_8,
+                   modifiers:{capsLockKey:1, shiftKey:1}, chars:"!"},
+                  "!", "Slash", KeyboardEvent.DOM_VK_EXCLAMATION, "!", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // AltGr
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{altGrKey:1}, chars:"@"},
+                  "@", "Digit0", KeyboardEvent.DOM_VK_0, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // AltGr + Digit1 does not cause text input in French layout.  In this case,
+    // AltGr shouldn't be used for a modifier of shortcut.  Therefore, not
+    // receiving `keypress` event even in the system group is fine.
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{altGrKey:1}, chars:""},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    //yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_2,
+    //               modifiers:{altGrKey:1}, chars:""},
+    //              "Dead", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // Dead-key
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_3,
+                   modifiers:{altGrKey:1}, chars:"#"},
+                  "#", "Digit3", KeyboardEvent.DOM_VK_3, "#", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_4,
+                   modifiers:{altGrKey:1}, chars:"{"},
+                  "{", "Digit4", KeyboardEvent.DOM_VK_4, "{", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_5,
+                   modifiers:{altGrKey:1}, chars:"["},
+                  "[", "Digit5", KeyboardEvent.DOM_VK_5, "[", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_6,
+                   modifiers:{altGrKey:1}, chars:"|"},
+                  "|", "Digit6", KeyboardEvent.DOM_VK_6, "|", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    //yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_7,
+    //               modifiers:{altGrKey:1}, chars:""},
+    //              "Dead", "Digit7", KeyboardEvent.DOM_VK_7, "", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD); // Dead-key
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_8,
+                   modifiers:{altGrKey:1}, chars:"\\"},
+                  "\\", "Digit8", KeyboardEvent.DOM_VK_8, "\\", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_9,
+                   modifiers:{altGrKey:1}, chars:"^"},
+                  "^", "Digit9", KeyboardEvent.DOM_VK_9, "^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_4,
+                   modifiers:{altGrKey:1}, chars:"]"},
+                  "]", "Minus", KeyboardEvent.DOM_VK_CLOSE_PAREN, "]", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_PLUS,
+                   modifiers:{altGrKey:1}, chars:"}"},
+                  "}", "Equal", KeyboardEvent.DOM_VK_EQUALS, "}", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // AltGr emulated with Ctrl and Alt
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"@", isInputtingCharacters:true},
+                  "@", "Digit0", KeyboardEvent.DOM_VK_0, "@", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_0,
+                   modifiers:{ctrlKey:1, altKey:1, shiftKey:1}, chars:"", isInputtingCharacters:false},
+                  "0", "Digit0", KeyboardEvent.DOM_VK_0, "0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    // Different from AltGr + Digit1 case, Ctrl + Alt + Digit1 should be
+    // available as a shortcut key.  Therefore, `keypress` event needs to be
+    // fired.
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"", isInputtingCharacters:false},
+                  "&", "Digit1", KeyboardEvent.DOM_VK_1, "&", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_1,
+                   modifiers:{ctrlKey:1, altKey:1, shiftKey:1}, chars:"", isInputtingCharacters:false},
+                  "1", "Digit1", KeyboardEvent.DOM_VK_1, "1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // German
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_OEM_2,
+                   modifiers:{}, chars:"#"},
+                  "#", "Backslash", KeyboardEvent.DOM_VK_HASH, "#", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_OEM_2,
+                   modifiers:{shiftKey:1}, chars:"'"},
+                  "'", "Backslash", KeyboardEvent.DOM_VK_HASH, "'", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Khmer
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2,
+                    modifiers:{}, chars:"\u17E2"},
+                  "\u17E2", "Digit2", KeyboardEvent.DOM_VK_2, "\u17E2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2,
+                    modifiers:{shiftKey:1}, chars:"\u17D7"},
+                  "\u17D7", "Digit2", KeyboardEvent.DOM_VK_2, "\u17D7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2, // Ctrl+2 should cause inputting Euro sign.
+                    modifiers:{ctrlKey:1}, chars:"\u20AC", isInputtingCharacters:true},
+                  "\u20AC", "Digit2", KeyboardEvent.DOM_VK_2, "\u20AC", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2, // Ctrl+Shift+2 shouldn't cause any input.
+                    modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                  "\u17D7", "Digit2", KeyboardEvent.DOM_VK_2, "\u17D7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2,
+                    modifiers:{altKey:1}, chars:"\u17E2"},
+                  "\u17E2", "Digit2", KeyboardEvent.DOM_VK_2, "\u17E2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2,
+                    modifiers:{altKey:1, shiftKey:1}, chars:"\u17D7"},
+                  "\u17D7", "Digit2", KeyboardEvent.DOM_VK_2, "\u17D7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2,
+                    modifiers:{altGrKey:1}, chars:"2"},
+                  "2", "Digit2", KeyboardEvent.DOM_VK_2, "2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_KHMER, keyCode:WIN_VK_2,
+                    modifiers:{altGrKey:1, shiftKey:1}, chars:"\u19E2"},
+                  "\u19E2", "Digit2", KeyboardEvent.DOM_VK_2, "\u19E2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Norwegian
+    yield testKey({layout:KEYBOARD_LAYOUT_NORWEGIAN, keyCode:WIN_VK_OEM_5,
+                   modifiers:{}, chars:"|"},
+                  "|", "Backquote", KeyboardEvent.DOM_VK_PIPE, "|", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_NORWEGIAN, keyCode:WIN_VK_OEM_5,
+                   modifiers:{shiftKey:1}, chars:"\u00A7"},
+                  "\u00A7", "Backquote", KeyboardEvent.DOM_VK_PIPE, "\u00A7", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // Brazilian ABNT
+    yield testKey({layout:KEYBOARD_LAYOUT_BRAZILIAN_ABNT, keyCode:WIN_VK_ABNT_C1,
+                   modifiers:{}, chars:"/"},
+                  "/", "IntlBackslash", KeyboardEvent.DOM_VK_SLASH, "/", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_BRAZILIAN_ABNT, keyCode:WIN_VK_ABNT_C1,
+                   modifiers:{shiftKey:1}, chars:"?"},
+                  "?", "IntlBackslash", KeyboardEvent.DOM_VK_SLASH, "?", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_BRAZILIAN_ABNT, keyCode:WIN_VK_ABNT_C2,
+                   modifiers:{numLockKey:1}, chars:"."},
+                  ".", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_BRAZILIAN_ABNT, keyCode:WIN_VK_DECIMAL,
+                   modifiers:{numLockKey:1}, chars:","},
+                  ",", "NumpadDecimal", KeyboardEvent.DOM_VK_DECIMAL, ",", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+
+    // Mac JIS keyboard
+    // The separator key on JIS keyboard for Mac doesn't cause any character even with Japanese keyboard layout.
+    yield testKey({layout:KEYBOARD_LAYOUT_JAPANESE, keyCode:WIN_VK_ABNT_C2,
+                   modifiers:{numLockKey:1}, chars:""},
+                  "", "NumpadComma", KeyboardEvent.DOM_VK_SEPARATOR, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+    yield testKey({layout:KEYBOARD_LAYOUT_JAPANESE, keyCode:WIN_VK_DECIMAL,
+                   modifiers:{numLockKey:1}, chars:"."},
+                  ".", "NumpadDecimal", KeyboardEvent.DOM_VK_DECIMAL, ".", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_NUMPAD);
+
+    // Dead keys on any layouts
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{}, chars:"^^"},
+                  ["^^", "^", "^", "^"], "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "^^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E2"},
+                  ["\u00E2", "\u00E2", "a"], "KeyQ", KeyboardEvent.DOM_VK_A, "\u00E2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u00C2"},
+                  ["\u00C2", "\u00C2", "A"], "KeyQ", KeyboardEvent.DOM_VK_A, "\u00C2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_Q,
+                   modifiers:{}, chars:"^q"},
+                  ["^q", "^", "q", "q"], "KeyA", KeyboardEvent.DOM_VK_Q, "^q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{shiftKey:1}, chars:"\u00A8\u00A8"},
+                  ["\u00A8\u00A8", "\u00A8", "\u00A8", "\u00A8"], "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "\u00A8\u00A8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u00C4"},
+                  ["\u00C4", "\u00C4", "A"], "KeyQ", KeyboardEvent.DOM_VK_A, "\u00C4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E4"},
+                  ["\u00E4", "\u00E4", "a"], "KeyQ", KeyboardEvent.DOM_VK_A, "\u00E4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_OEM_6,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_FRENCH, keyCode:WIN_VK_Q,
+                   modifiers:{shiftKey:1}, chars:"\u00A8Q"},
+                  ["\u00A8Q", "\u00A8", "Q", "Q"], "KeyA", KeyboardEvent.DOM_VK_Q, "\u00A8Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:"``"},
+                  ["``", "`", "`", "`"], "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "``", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E0"},
+                  ["\u00E0", "\u00E0", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u00C0"},
+                  ["\u00C0", "\u00C0", "A"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00C0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_Q,
+                   modifiers:{}, chars:"`q"},
+                  ["`q", "`", "q", "q"], "KeyQ", KeyboardEvent.DOM_VK_Q, "`q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:"^^"},
+                  ["^^", "^", "^", "^"], "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "^^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u00C2"},
+                  ["\u00C2", "\u00C2", "A"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00C2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E2"},
+                  ["\u00E2", "\u00E2", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_Q,
+                   modifiers:{shiftKey:1}, chars:"^Q"},
+                  ["^Q", "^", "Q", "Q"], "KeyQ", KeyboardEvent.DOM_VK_Q, "^Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:"\u00B4\u00B4"},
+                  ["\u00B4\u00B4", "\u00B4", "\u00B4", "\u00B4"], "Quote", KeyboardEvent.DOM_VK_QUOTE, "\u00B4\u00B4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E1"},
+                  ["\u00E1", "\u00E1", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u00C1"},
+                  ["\u00C1", "\u00C1", "A"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00C1", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_Q,
+                   modifiers:{}, chars:"\u00B4q"},
+                  ["\u00B4q", "\u00B4", "q", "q"], "KeyQ", KeyboardEvent.DOM_VK_Q, "\u00B4q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:"\u00A8\u00A8"},
+                  ["\u00A8\u00A8", "\u00A8", "\u00A8", "\u00A8"], "Quote", KeyboardEvent.DOM_VK_QUOTE, "\u00A8\u00A8", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"\u00C4"},
+                  ["\u00C4", "\u00C4", "A"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00C4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E4"},
+                  ["\u00E4", "\u00E4", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E4", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_7,
+                   modifiers:{shiftKey:1}, chars:""},
+                  "Dead", "Quote", KeyboardEvent.DOM_VK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_Q,
+                   modifiers:{shiftKey:1}, chars:"\u00A8Q"},
+                  ["\u00A8Q", "\u00A8", "Q", "Q"], "KeyQ", KeyboardEvent.DOM_VK_Q, "\u00A8Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_NORWEGIAN, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altGrKey:1}, chars:""},
+                  "Dead", "BracketRight", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_NORWEGIAN, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E3"},
+                  ["\u00E3", "\u00E3", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_NORWEGIAN, keyCode:WIN_VK_OEM_1,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:""},
+                  "Dead", "BracketRight", KeyboardEvent.DOM_VK_CIRCUMFLEX, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_NORWEGIAN, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"\u00E3"},
+                  ["\u00E3", "\u00E3", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E3", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    if (OS_VERSION >= WIN8) {
+      // On Russian Mnemonic layout, both 'KeyS' and 'KeyC' are dead key.  However, the sequence 'KeyS' -> 'KeyC' causes a composite character.
+      yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC, keyCode:WIN_VK_S,
+                     modifiers:{}, chars:""},
+                    "Dead", "KeyS", KeyboardEvent.DOM_VK_S, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+      yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC, keyCode:WIN_VK_S,
+                     modifiers:{}, chars:"\u0441\u0441"},
+                    ["\u0441\u0441", "\u0441", "\u0441", "\u0441"], "KeyS", KeyboardEvent.DOM_VK_S, "\u0441\u0441", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+      yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC, keyCode:WIN_VK_C,
+                     modifiers:{}, chars:""},
+                    "Dead", "KeyC", KeyboardEvent.DOM_VK_C, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+      yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC, keyCode:WIN_VK_C,
+                     modifiers:{}, chars:"\u0446\u0446"},
+                    ["\u0446\u0446", "\u0446", "\u0446", "\u0446"], "KeyC", KeyboardEvent.DOM_VK_C, "\u0446\u0446", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+      yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC, keyCode:WIN_VK_S,
+                     modifiers:{}, chars:""},
+                    "Dead", "KeyS", KeyboardEvent.DOM_VK_S, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+      yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC, keyCode:WIN_VK_C,
+                     modifiers:{}, chars:"\u0449"},
+                    ["\u0449", "\u0449", "\u0446"], "KeyC", KeyboardEvent.DOM_VK_C, "\u0449", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    }
+
+    yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1,ctrlKey:1}, chars:""},
+                   "\u0444", "KeyA", KeyboardEvent.DOM_VK_A, "a", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1,ctrlKey:1,shiftKey:1}, chars:""},
+                   "\u0424", "KeyA", KeyboardEvent.DOM_VK_A, "A", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN, keyCode:WIN_VK_T,
+                   modifiers:{altKey:1,ctrlKey:1}, chars:""},
+                   "\u0435", "KeyT", KeyboardEvent.DOM_VK_T, "t", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_RUSSIAN, keyCode:WIN_VK_T,
+                   modifiers:{altKey:1,ctrlKey:1,shiftKey:1}, chars:""},
+                   "\u0415", "KeyT", KeyboardEvent.DOM_VK_T, "T", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    // When Alt key is pressed, dead key sequence is generated with WM_SYSKEYDOWN, WM_SYSDEADCHAR, WM_SYSCHAR and WM_SYSKEYUP.
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1}, chars:"``"},
+                  ["``", "`", "`", "`"], "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "``", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1}, chars:"\u00E0"},
+                  ["\u00E0", "\u00E0", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C0"},
+                  ["\u00C0", "\u00C0", "A"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00C0", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_Q,
+                   modifiers:{altKey:1}, chars:"`q"},
+                  ["`q", "`", "q", "q"], "KeyQ", KeyboardEvent.DOM_VK_Q, "`q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"^^"},
+                  ["^^", "^", "^", "^"], "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "^^", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"\u00C2"},
+                  ["\u00C2", "\u00C2", "A"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00C2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_A,
+                   modifiers:{altKey:1}, chars:"\u00E2"},
+                  ["\u00E2", "\u00E2", "a"], "KeyA", KeyboardEvent.DOM_VK_A, "\u00E2", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_OEM_1,
+                   modifiers:{altKey:1, shiftKey:1}, chars:""},
+                  "Dead", "BracketLeft", KeyboardEvent.DOM_VK_BACK_QUOTE, "", SHOULD_DELIVER_KEYDOWN_KEYUP, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+    yield testKey({layout:KEYBOARD_LAYOUT_SPANISH, keyCode:WIN_VK_Q,
+                   modifiers:{altKey:1, shiftKey:1}, chars:"^Q"},
+                  ["^Q", "^", "Q", "Q"], "KeyQ", KeyboardEvent.DOM_VK_Q, "^Q", SHOULD_DELIVER_ALL, KeyboardEvent.DOM_KEY_LOCATION_STANDARD);
+
+    cleanup();
+  }
+
+
+  if (IS_WIN) {
+    yield* testKeysOnWindows();
+  } else if (IS_MAC) {
+    yield* testKeysOnMac();
+  } else {
+    cleanup();
+  }
+}
+
+// Test the activation (or not) of an HTML accesskey
+function* runAccessKeyTests()
+{
+  var button = document.getElementById("button");
+  var activationCount;
+
+  function onClick(e)
+  {
+    ++activationCount;
+  }
+
+  // The first parameter is the complete input event. The second and third parameters are
+  // what to test against.
+  function testKey(aEvent, aAccessKey, aShouldActivate)
+  {
+    activationCount = 0;
+    button.setAttribute("accesskey", aAccessKey);
+
+    return synthesizeKey(aEvent, "button", function() {
+
+      var currentTestName = eventToString(aEvent);
+
+      is(activationCount, aShouldActivate ? 1 : 0,
+         currentTestName + ", activating '" + aAccessKey + "'");
+
+      continueTest();
+    });
+  }
+
+  button.addEventListener("click", onClick);
+  
+  // These tests have to be per-plaform.
+  if (IS_MAC) {
+    // Basic sanity checks
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{}, chars:"a", unmodifiedChars:"a"},
+                  "a", false);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "a", false);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "A", false);
+
+    // Shift-ctrl does not activate accesskeys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0001", unmodifiedChars:"A"},
+                  "a", false);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0001", unmodifiedChars:"A"},
+                  "A", false);
+    // Alt-ctrl activate accesskeys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "a", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u0001", unmodifiedChars:"a"},
+                  "A", true);
+            
+    // Greek layout can activate a Latin accesskey
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u0001", unmodifiedChars:"\u03b1"},
+                  "a", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u0001", unmodifiedChars:"\u03b1"},
+                  "A", true);
+    // ... and a Greek accesskey!
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u0001", unmodifiedChars:"\u03b1"},
+                  "\u03b1", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u0001", unmodifiedChars:"\u03b1"},
+                  "\u0391", true);
+
+    // bug 359638
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Period,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:".", unmodifiedChars:"."},
+                  ".", true);
+
+    // German (KCHR/KeyTranslate case)
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"a", unmodifiedChars:"a"},
+                  "a", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"a", unmodifiedChars:"a"},
+                  "A", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u00fc", unmodifiedChars:"\u00fc"},
+                  "\u00fc", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:MAC_VK_ANSI_LeftBracket,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"\u00fc", unmodifiedChars:"\u00fc"},
+                  "\u00dc", true);
+  }
+  else if (IS_WIN) {
+    // Basic sanity checks
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"a"},
+                  "a", false);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1, altKey:1}, chars:"A"},
+                  "a", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1, altKey:1}, chars:"A"},
+                  "A", true);
+
+    // shift-alt-ctrl does not activate accesskeys
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1, shiftKey:1, altKey:1}, chars:""},
+                  "a", false);
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1, shiftKey:1, altKey:1}, chars:""},
+                  "A", false);
+
+    // Greek layout can activate a Latin accesskey
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1, altKey:1}, chars:"\u0391"},
+                  "a", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1, altKey:1}, chars:"\u0391"},
+                  "A", true);
+    // ... and a Greek accesskey!
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1, altKey:1}, chars:"\u0391"},
+                  "\u03b1", true);
+    yield testKey({layout:KEYBOARD_LAYOUT_GREEK, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1, altKey:1}, chars:"\u0391"},
+                  "\u0391", true);
+
+    // bug 359638
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_PERIOD,
+                   modifiers:{shiftKey:1, altKey:1}, chars:".", unmodifiedChars:"."},
+                  ".", true);
+  }
+  
+  button.removeEventListener("click", onClick);
+}
+
+function* runXULKeyTests()
+{
+  var commandElements = {
+    expectedCommand: document.getElementById("expectedCommand"),
+    unexpectedCommand: document.getElementById("unexpectedCommand"),
+    expectedReservedCommand: document.getElementById("expectedReservedCommand")
+  };
+  // Enable all command elements.
+  for (var id in commandElements) {
+    commandElements[id].removeAttribute("disabled");
+  }
+
+  var keyEvents = [];
+
+  function onKeyInDefaultEventGroup(aDOMEvent)
+  {
+    if (isModifierKeyEvent(aDOMEvent)) {
+      return;
+    }
+    keyEvents.push({ type: aDOMEvent.type, group: "default", phase: getPhase(aDOMEvent), currentTarget: eventTargetToString(aDOMEvent.currentTarget) });
+  }
+
+  function onKeyInSystemEventGroup(aDOMEvent)
+  {
+    if (isModifierKeyEvent(aDOMEvent)) {
+      return;
+    }
+    keyEvents.push({ type: aDOMEvent.type, group: "system", phase: getPhase(aDOMEvent), currentTarget: eventTargetToString(aDOMEvent.currentTarget) });
+  }
+
+  var buttonParent = document.getElementById("button").parentNode;
+  buttonParent.addEventListener("keydown", onKeyInDefaultEventGroup, true);
+  buttonParent.addEventListener("keypress", onKeyInDefaultEventGroup, true);
+  buttonParent.addEventListener("keydown", onKeyInDefaultEventGroup);
+  buttonParent.addEventListener("keypress", onKeyInDefaultEventGroup);
+  SpecialPowers.addSystemEventListener(buttonParent, "keydown", onKeyInSystemEventGroup, true);
+  SpecialPowers.addSystemEventListener(buttonParent, "keypress", onKeyInSystemEventGroup, true);
+  SpecialPowers.addSystemEventListener(buttonParent, "keydown", onKeyInSystemEventGroup, false);
+  SpecialPowers.addSystemEventListener(buttonParent, "keypress", onKeyInSystemEventGroup, false);
+
+  function finializeKeyElementTest()
+  {
+    buttonParent.removeEventListener("keydown", onKeyInDefaultEventGroup, true);
+    buttonParent.removeEventListener("keypress", onKeyInDefaultEventGroup, true);
+    buttonParent.removeEventListener("keydown", onKeyInDefaultEventGroup);
+    buttonParent.removeEventListener("keypress", onKeyInDefaultEventGroup);
+    SpecialPowers.removeSystemEventListener(buttonParent, "keydown", onKeyInSystemEventGroup, true);
+    SpecialPowers.removeSystemEventListener(buttonParent, "keypress", onKeyInSystemEventGroup, true);
+    SpecialPowers.removeSystemEventListener(buttonParent, "keydown", onKeyInSystemEventGroup, false);
+    SpecialPowers.removeSystemEventListener(buttonParent, "keypress", onKeyInSystemEventGroup, false);
+  }
+
+  // If aKeyElement is empty string, this function tests if the event kicks
+  // no key elements.
+  function testKeyElement(aEvent, aKeyElementId)
+  {
+    var testName = "testKeyElement (with non-reserved command element): " + eventToString(aEvent) + " ";
+    var keyElement = aKeyElementId == "" ? null : document.getElementById(aKeyElementId);
+    if (keyElement) {
+      keyElement.setAttribute("command", "expectedCommand");
+    }
+
+    /* eslint-disable-next-line no-shadow */
+    for (var id in commandElements) {
+      commandElements[id].activeCount = 0;
+    }
+
+    keyEvents = [];
+    return synthesizeKey(aEvent, "button", function() {
+      if (keyElement) {
+        is(commandElements.expectedCommand.activeCount, 1, testName + "the command element (id='expectedCommand') should be preformed");
+      } else {
+        is(commandElements.expectedCommand.activeCount, 0, testName + "the command element (id='expectedCommand') shouldn't be preformed");
+      }
+      is(commandElements.unexpectedCommand.activeCount, 0, testName + "the command element (id='unexpectedCommand') shouldn't be preformed");
+      is(commandElements.expectedReservedCommand.activeCount, 0, testName + "the command element (id='expectedReservedCommand') shouldn't be preformed");
+
+      function checkFiredEvents()
+      {
+        let expectKeyPressEvent = aKeyElementId != "" ||
+                                  ((aEvent.modifiers.ctrlKey || aEvent.modifiers.altKey || aEvent.modifiers.metaKey) &&
+                                   (!IS_WIN || !aEvent.modifiers.altGrKey));
+        is(keyEvents.length, expectKeyPressEvent ? 8 : 4, testName + "wrong number events fired");
+        is(JSON.stringify(keyEvents[0]), JSON.stringify({ type: "keydown", group: "default", phase: "capture", currentTarget: eventTargetToString(buttonParent) }), testName + "keydown event should be fired on chrome in the default event group #0");
+        is(JSON.stringify(keyEvents[1]), JSON.stringify({ type: "keydown", group: "default", phase: "bubble", currentTarget: eventTargetToString(buttonParent) }), testName + "keydown event should be fired on chrome in the default event group #1");
+
+        is(JSON.stringify(keyEvents[2]), JSON.stringify({ type: "keydown", group: "system", phase: "capture", currentTarget: eventTargetToString(buttonParent) }), testName + "keydown event should be fired on chrome in the system event group #2");
+        is(JSON.stringify(keyEvents[3]), JSON.stringify({ type: "keydown", group: "system", phase: "bubble", currentTarget: eventTargetToString(buttonParent) }), testName + "keydown event should be fired on chrome in the system event group #3");
+
+        if (expectKeyPressEvent) {
+          is(JSON.stringify(keyEvents[4]), JSON.stringify({ type: "keypress", group: "default", phase: "capture", currentTarget: eventTargetToString(buttonParent) }), testName + "keypress event should be fired on chrome in the default event group #4");
+          is(JSON.stringify(keyEvents[5]), JSON.stringify({ type: "keypress", group: "default", phase: "bubble", currentTarget: eventTargetToString(buttonParent) }), testName + "keypress event should be fired on chrome in the default event group #5");
+
+          is(JSON.stringify(keyEvents[6]), JSON.stringify({ type: "keypress", group: "system", phase: "capture", currentTarget: eventTargetToString(buttonParent) }), testName + "keypress event should be fired on chrome in the system event group #6");
+          is(JSON.stringify(keyEvents[7]), JSON.stringify({ type: "keypress", group: "system", phase: "bubble", currentTarget: eventTargetToString(buttonParent) }), testName + "keypress event should be fired on chrome in the system event group #7");
+        }
+      }
+
+      checkFiredEvents();
+
+      if (keyElement) {
+        testName = "testKeyElement (with reserved command element): " + eventToString(aEvent) + " ";
+        keyElement.setAttribute("command", "expectedReservedCommand");
+
+        for (id in commandElements) {
+          commandElements[id].activeCount = 0;
+        }
+        keyEvents = [];
+        synthesizeKey(aEvent, "button", function() {
+          is(commandElements.expectedCommand.activeCount, 0, testName + "the command element (id='expectedCommand') shouldn't be preformed");
+          is(commandElements.unexpectedCommand.activeCount, 0, testName + "the command element (id='unexpectedCommand') shouldn't be preformed");
+          is(commandElements.expectedReservedCommand.activeCount, 1, testName + "the command element (id='expectedReservedCommand') should be preformed");
+
+          checkFiredEvents();
+
+          if (keyElement) {
+            keyElement.setAttribute("command", "unexpectedCommand");
+          }
+          continueTest();
+        });
+      } else {
+        if (keyElement) {
+          keyElement.setAttribute("command", "unexpectedCommand");
+        }
+        continueTest();
+      }
+    });
+  }
+
+  if (IS_MAC) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                          modifiers:{metaKey:1}, chars:";", unmodifiedChars:";"},
+                         "unshiftedKey");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Semicolon,
+                          modifiers:{metaKey:1, shiftKey:1}, chars:";", unmodifiedChars:":"},
+                         "shiftedKey");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                          modifiers:{metaKey:1}, chars:"'", unmodifiedChars:"'"},
+                         "reservedUnshiftedKey");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_Quote,
+                          modifiers:{metaKey:1, shiftKey:1}, chars:"\"", unmodifiedChars:"'"},
+                         "reservedShiftedKey");
+  }
+  else if (IS_WIN) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                          modifiers:{ctrlKey:1}, chars:""},
+                         "unshiftedKey");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_1,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                         "shiftedKey");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                          modifiers:{ctrlKey:1}, chars:""},
+                         "reservedUnshiftedKey");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_OEM_7,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                         "reservedShiftedKey");
+  }
+
+  // 429160
+  if (IS_MAC) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_F,
+                          modifiers:{metaKey:1, altKey:1}, chars:"\u0192", unmodifiedChars:"f"},
+                         "commandOptionF");
+  }
+  else if (IS_WIN) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_F,
+                          modifiers:{ctrlKey:1, altKey:1}, chars:"\u0006"},
+                         "commandOptionF");
+  }
+  
+  // 432112
+  if (IS_MAC) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_SWEDISH, keyCode:MAC_VK_ANSI_Minus,
+                          modifiers:{metaKey:1, shiftKey:1}, chars:"+", unmodifiedChars:"?"},
+                         "question");
+  }
+  else if (IS_WIN) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_SWEDISH, keyCode:WIN_VK_OEM_PLUS,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                         "question");
+    // For testing if Ctrl+? is kicked without Shift state, temporarily disable
+    // Ctrl-+ key element.
+    var unshiftedPlusKeyElement = document.getElementById("unshiftedPlus");
+    unshiftedPlusKeyElement.setAttribute("disabled", "true");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_SWEDISH, keyCode:WIN_VK_OEM_PLUS,
+                          modifiers:{ctrlKey:1}, chars:""},
+                         "");
+    unshiftedPlusKeyElement.removeAttribute("disabled");
+  }
+
+  // bug 433192
+  if (IS_WIN) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                          modifiers:{ctrlKey:1}, chars:"\u0018"},
+                         "unshiftedX");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_X,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0018"},
+                         "shiftedX");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_ARABIC, keyCode:WIN_VK_X,
+                          modifiers:{ctrlKey:1}, chars:"\u0018"},
+                         "unshiftedX");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_ARABIC, keyCode:WIN_VK_X,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0018"},
+                         "shiftedX");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_HEBREW, keyCode:WIN_VK_X,
+                          modifiers:{ctrlKey:1}, chars:"\u0018"},
+                         "unshiftedX");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_HEBREW, keyCode:WIN_VK_X,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:"\u0018"},
+                         "shiftedX");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_JAPANESE, keyCode:WIN_VK_OEM_PLUS,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                         "unshiftedPlus");
+  }
+
+  // bug 759346
+  if (IS_WIN) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_THAI, keyCode:WIN_VK_1,
+                          modifiers:{ctrlKey:1}, chars:""},
+                         "");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_THAI, keyCode:WIN_VK_1,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                         "unshiftedPlus");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_THAI, keyCode:WIN_VK_OEM_PLUS,
+                          modifiers:{ctrlKey:1}, chars:""},
+                         "unshiftedPlus");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_THAI, keyCode:WIN_VK_OEM_PLUS,
+                          modifiers:{ctrlKey:1, shiftKey:1}, chars:""},
+                         "");
+  }
+
+  // bug 1596916
+  if (IS_WIN) {
+    // Ctrl + Alt + foo should be performed only when AltGr key is not
+    // pressed, i.e., only when Ctrl key and left Alt key are pressed if
+    // active keyboard layout has AltGr key.
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                          modifiers:{altGrKey:1}, chars:""},
+                         "");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                          modifiers:{ctrlKey:1, altGrKey:1}, chars:""},
+                         "");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                          modifiers:{altKey:1, altGrKey:1}, chars:""},
+                         "");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                          modifiers:{ctrlKey:1, altKey:1}, chars:""},
+                         "ctrlAltA");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                          modifiers:{ctrlKey:1, altKey:1, altGrKey:1}, chars:""},
+                         "");
+  }
+
+  // bug 1874727
+  if (IS_WIN) {
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_RUSSIAN, keyCode:WIN_VK_A,
+                          modifiers:{altKey:1, ctrlKey:1}, chars:""},
+                         "ctrlAltA");
+    yield testKeyElement({layout:KEYBOARD_LAYOUT_RUSSIAN, keyCode:WIN_VK_A,
+                          modifiers:{altKey:1, ctrlKey:1, shiftKey:1}, chars:""},
+                         "ctrlAltShiftA");
+  }
+
+  for (id in commandElements) {
+    commandElements[id].setAttribute("disabled", "true");
+  }
+  finializeKeyElementTest();
+}
+
+function* runReservedKeyTests()
+{
+  var browser = document.getElementById("browser");
+  var contents = [
+    browser.contentWindow,
+    browser.contentDocument,
+    browser.contentDocument.documentElement,
+    browser.contentDocument.body,
+    browser.contentDocument.getElementById("content_button")
+  ];
+
+  for (var i = 0; i < contents.length; i++) {
+    contents[i].addEventListener("keydown", onKeyInDefaultEventGroup, true);
+    contents[i].addEventListener("keypress", onKeyInDefaultEventGroup, true);
+    contents[i].addEventListener("keydown", onKeyInDefaultEventGroup);
+    contents[i].addEventListener("keypress", onKeyInDefaultEventGroup);
+    SpecialPowers.addSystemEventListener(contents[i], "keydown", onKeyInSystemEventGroup, true);
+    SpecialPowers.addSystemEventListener(contents[i], "keypress", onKeyInSystemEventGroup, true);
+    SpecialPowers.addSystemEventListener(contents[i], "keydown", onKeyInSystemEventGroup, false);
+    SpecialPowers.addSystemEventListener(contents[i], "keypress", onKeyInSystemEventGroup, false);
+  }
+
+  var keyEvents = [];
+
+  function onKeyInDefaultEventGroup(aDOMEvent)
+  {
+    if (isModifierKeyEvent(aDOMEvent)) {
+      return;
+    }
+    keyEvents.push({ type: aDOMEvent.type, group: "default", phase: getPhase(aDOMEvent), currentTarget: eventTargetToString(aDOMEvent.currentTarget) });
+  }
+
+  function onKeyInSystemEventGroup(aDOMEvent)
+  {
+    if (isModifierKeyEvent(aDOMEvent)) {
+      return;
+    }
+    keyEvents.push({ type: aDOMEvent.type, group: "system", phase: getPhase(aDOMEvent), currentTarget: eventTargetToString(aDOMEvent.currentTarget) });
+    // prevents reserved default action
+    if (aDOMEvent.type == "keypress" &&
+        aDOMEvent.eventPhase == aDOMEvent.BUBBLING_PHASE &&
+        aDOMEvent.currentTarget == browser.contentWindow) {
+      aDOMEvent.preventDefault();
+    }
+  }
+
+  function finializeKeyElementTest()
+  {
+    /* eslint-disable-next-line no-shadow */
+    for (var i = 0; i < contents.length; i++) {
+      contents[i].removeEventListener("keydown", onKeyInDefaultEventGroup, true);
+      contents[i].removeEventListener("keypress", onKeyInDefaultEventGroup, true);
+      contents[i].removeEventListener("keydown", onKeyInDefaultEventGroup);
+      contents[i].removeEventListener("keypress", onKeyInDefaultEventGroup);
+      SpecialPowers.removeSystemEventListener(contents[i], "keydown", onKeyInSystemEventGroup, true);
+      SpecialPowers.removeSystemEventListener(contents[i], "keypress", onKeyInSystemEventGroup, true);
+      SpecialPowers.removeSystemEventListener(contents[i], "keydown", onKeyInSystemEventGroup, false);
+      SpecialPowers.removeSystemEventListener(contents[i], "keypress", onKeyInSystemEventGroup, false);
+    }
+  }
+
+  function testReservedKey(aEvent)
+  {
+    keyEvents = [];
+    return synthesizeKey(aEvent, "content_button", function() {
+      let testName = "testReservedKey: " + eventToString(aEvent) + " ";
+      is(keyEvents.length, 20, testName + "wrong number events fired");
+      is(JSON.stringify(keyEvents[0]), JSON.stringify({ type: "keydown", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[0]) }), testName + "keydown event should be fired on content only in the system event group #0");
+      is(JSON.stringify(keyEvents[1]), JSON.stringify({ type: "keydown", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[1]) }), testName + "keydown event should be fired on content only in the system event group #1");
+      is(JSON.stringify(keyEvents[2]), JSON.stringify({ type: "keydown", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[2]) }), testName + "keydown event should be fired on content only in the system event group #2");
+      is(JSON.stringify(keyEvents[3]), JSON.stringify({ type: "keydown", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[3]) }), testName + "keydown event should be fired on content only in the system event group #3");
+
+      is(JSON.stringify(keyEvents[4]), JSON.stringify({ type: "keydown", group: "system", phase: "target", currentTarget: eventTargetToString(contents[4]) }), testName + "keydown event should be fired on content only in the system event group #4");
+      is(JSON.stringify(keyEvents[5]), JSON.stringify({ type: "keydown", group: "system", phase: "target", currentTarget: eventTargetToString(contents[4]) }), testName + "keydown event should be fired on content only in the system event group #5");
+
+      is(JSON.stringify(keyEvents[6]), JSON.stringify({ type: "keydown", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[3]) }), testName + "keydown event should be fired on content only in the system event group #6");
+      is(JSON.stringify(keyEvents[7]), JSON.stringify({ type: "keydown", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[2]) }), testName + "keydown event should be fired on content only in the system event group #7");
+      is(JSON.stringify(keyEvents[8]), JSON.stringify({ type: "keydown", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[1]) }), testName + "keydown event should be fired on content only in the system event group #8");
+      is(JSON.stringify(keyEvents[9]), JSON.stringify({ type: "keydown", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[0]) }), testName + "keydown event should be fired on content only in the system event group #9");
+
+      is(JSON.stringify(keyEvents[10]), JSON.stringify({ type: "keypress", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[0]) }), testName + "keypress event should be fired on content only in the system event group #10");
+      is(JSON.stringify(keyEvents[11]), JSON.stringify({ type: "keypress", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[1]) }), testName + "keypress event should be fired on content only in the system event group #11");
+      is(JSON.stringify(keyEvents[12]), JSON.stringify({ type: "keypress", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[2]) }), testName + "keypress event should be fired on content only in the system event group #12");
+      is(JSON.stringify(keyEvents[13]), JSON.stringify({ type: "keypress", group: "system", phase: "capture", currentTarget: eventTargetToString(contents[3]) }), testName + "keypress event should be fired on content only in the system event group #13");
+
+      is(JSON.stringify(keyEvents[14]), JSON.stringify({ type: "keypress", group: "system", phase: "target", currentTarget: eventTargetToString(contents[4]) }), testName + "keypress event should be fired on content only in the system event group #14");
+      is(JSON.stringify(keyEvents[15]), JSON.stringify({ type: "keypress", group: "system", phase: "target", currentTarget: eventTargetToString(contents[4]) }), testName + "keypress event should be fired on content only in the system event group #15");
+
+      is(JSON.stringify(keyEvents[16]), JSON.stringify({ type: "keypress", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[3]) }), testName + "keypress event should be fired on content only in the system event group #16");
+      is(JSON.stringify(keyEvents[17]), JSON.stringify({ type: "keypress", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[2]) }), testName + "keypress event should be fired on content only in the system event group #17");
+      is(JSON.stringify(keyEvents[18]), JSON.stringify({ type: "keypress", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[1]) }), testName + "keypress event should be fired on content only in the system event group #18");
+      is(JSON.stringify(keyEvents[19]), JSON.stringify({ type: "keypress", group: "system", phase: "bubble", currentTarget: eventTargetToString(contents[0]) }), testName + "keypress event should be fired on content only in the system event group #19");
+
+      continueTest();
+    });
+  }
+
+  if (IS_MAC) {
+    // Cmd+T is reserved for opening new tab.
+    yield testReservedKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:MAC_VK_ANSI_T,
+                           modifiers:{metaKey:1}, chars:"t", unmodifiedChars:"t"});
+  } else if (IS_WIN) {
+    // Ctrl+T is reserved for opening new tab.
+    yield testReservedKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_T,
+                           modifiers:{ctrlKey:1}, chars:"\u0014"});
+    yield testReservedKey({layout:KEYBOARD_LAYOUT_ARABIC, keyCode:WIN_VK_T,
+                           modifiers:{ctrlKey:1}, chars:"\u0014"});
+  }
+
+  finializeKeyElementTest();
+}
+
+function* runTextInputTests()
+{
+  var textbox = document.getElementById("textbox");
+
+  function testKey(aEvent, aExpectText) {
+    textbox.value = "";
+    textbox.focus();
+
+    /* eslint-disable-next-line no-shadow */
+    var currentTestName = eventToString(aEvent);
+
+    // Check if the text comes with keypress events rather than composition events.
+    var keypress = 0;
+    /* eslint-disable-next-line no-shadow */
+    function onKeypress(aEvent) {
+      keypress++;
+      if (keypress == 1 && aExpectText == "") {
+        if (!aEvent.ctrlKey && !aEvent.altKey) {
+          is(aEvent.charCode, 0,
+             currentTestName + ", the charCode value should be 0 when it shouldn't cause inputting text");
+        }
+        return;
+      }
+      if (keypress > aExpectText.length) {
+        ok(false, currentTestName + " causes too many keypress events");
+        return;
+      }
+      is(aEvent.key, aExpectText[keypress - 1],
+         currentTestName + ", " + keypress + "th keypress event's key value should be '" + aExpectText[keypress - 1] + "'");
+      is(aEvent.charCode, aExpectText.charCodeAt(keypress - 1),
+         currentTestName + ", " + keypress + "th keypress event's charCode value should be 0x" + parseInt(aExpectText.charCodeAt(keypress - 1), 16));
+    }
+    textbox.addEventListener("keypress", onKeypress, true);
+
+    return synthesizeKey(aEvent, "textbox", () => {
+      textbox.removeEventListener("keypress", onKeypress, true);
+      if (aExpectText == "") {
+        if (aEvent.modifiers.ctrlKey || aEvent.modifiers.altKey) {
+          is(keypress, 1,
+             currentTestName + " should cause one keypress event because it should be available for shortcut key");
+        } else {
+          is(keypress, 0,
+             currentTestName + " should cause no keypress event because simple key press only with Shift/AltGraph " +
+               "or without any modifiers shouldn't match with a shortcut key");
+        }
+      } else {
+        is(keypress, aExpectText.length,
+           currentTestName + " should cause " + aExpectText.length + " keypress events");
+        is(textbox.value, aExpectText,
+           currentTestName + " does not input correct text.");
+      }
+
+      continueTest();
+    });
+  }
+
+  if (IS_MAC) {
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_G,
+                   modifiers:{shiftKey:1}, chars:"\u0644\u0623", unmodifiedChars:"\u0644\u0623"},
+                  "\u0644\u0623");
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_T,
+                   modifiers:{shiftKey:1}, chars:"\u0644\u0625", unmodifiedChars:"\u0644\u0625"},
+                  "\u0644\u0625");
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{shiftKey:1}, chars:"\u0644\u0622", unmodifiedChars:"\u0644\u0622"},
+                  "\u0644\u0622");
+    yield testKey({layout:KEYBOARD_LAYOUT_ARABIC_PC, keyCode:MAC_VK_ANSI_B,
+                   modifiers:{}, chars:"\u0644\u0627", unmodifiedChars:"\u0644\u0627"},
+                  "\u0644\u0627");
+  } else if (IS_WIN) {
+    // Basic sanity checks
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{}, chars:"a"},
+                  "a");
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{shiftKey:1}, chars:"A"},
+                  "A");
+    // When Ctrl+Alt are pressed, any text should not be inputted.
+    yield testKey({layout:KEYBOARD_LAYOUT_EN_US, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:""},
+                  "");
+    // AltGr should input only when it's mapped to a character
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_0,
+                   modifiers:{altGrKey:1}, chars:"}"},
+                  "}");
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                   modifiers:{altGrKey:1}, chars:""},
+                  "");
+    yield testKey({layout:KEYBOARD_LAYOUT_GERMAN, keyCode:WIN_VK_A,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:""},
+                  "");
+
+    // Lithuanian AltGr should be consumed at 9/0 keys pressed
+    yield testKey({layout:KEYBOARD_LAYOUT_LITHUANIAN, keyCode:WIN_VK_8,
+                   modifiers:{}, chars:"\u016B"},
+                  "\u016B");
+    yield testKey({layout:KEYBOARD_LAYOUT_LITHUANIAN, keyCode:WIN_VK_9,
+                   modifiers:{}, chars:"9"},
+                  "9");
+    yield testKey({layout:KEYBOARD_LAYOUT_LITHUANIAN, keyCode:WIN_VK_0,
+                   modifiers:{}, chars:"0"},
+                  "0");
+    yield testKey({layout:KEYBOARD_LAYOUT_LITHUANIAN, keyCode:WIN_VK_8,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"8"},
+                  "8");
+    yield testKey({layout:KEYBOARD_LAYOUT_LITHUANIAN, keyCode:WIN_VK_9,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"9"},
+                  "9");
+    yield testKey({layout:KEYBOARD_LAYOUT_LITHUANIAN, keyCode:WIN_VK_0,
+                   modifiers:{ctrlKey:1, altKey:1}, chars:"0"},
+                  "0");
+  }
+
+  // XXX We need to move focus for canceling to search the autocomplete
+  // result. If we don't do here, Fx will crash at end of this tests.
+  document.getElementById("button").focus();
+}
+
+function* runAltRightKeyOnWindows()
+{
+  if (!IS_WIN) {
+    return;
+  }
+
+  var button = document.getElementById("button");
+  button.focus();
+
+  const kKeyboardLayouts = [
+    { layout: KEYBOARD_LAYOUT_ARABIC },
+    { layout: KEYBOARD_LAYOUT_BRAZILIAN_ABNT },
+    { layout: KEYBOARD_LAYOUT_EN_US },
+    { layout: KEYBOARD_LAYOUT_FRENCH },
+    { layout: KEYBOARD_LAYOUT_GREEK },
+    { layout: KEYBOARD_LAYOUT_GERMAN },
+    { layout: KEYBOARD_LAYOUT_HEBREW },
+    { layout: KEYBOARD_LAYOUT_JAPANESE },
+    { layout: KEYBOARD_LAYOUT_KHMER },
+    { layout: KEYBOARD_LAYOUT_LITHUANIAN },
+    { layout: KEYBOARD_LAYOUT_NORWEGIAN },
+    { layout: KEYBOARD_LAYOUT_RUSSIAN_MNEMONIC,
+      canTestIt () { return OS_VERSION >= WIN8; } },
+    { layout: KEYBOARD_LAYOUT_SPANISH },
+    { layout: KEYBOARD_LAYOUT_SWEDISH },
+    { layout: KEYBOARD_LAYOUT_THAI },
+  ];
+  var events = [];
+  function pushEvent(aEvent) {
+    events.push(aEvent);
+    if (aEvent.key === "Alt") {
+      // Prevent working the menubar.
+      aEvent.preventDefault();
+    }
+  }
+  button.addEventListener("keydown", pushEvent);
+  button.addEventListener("keyup", pushEvent);
+
+  function testKey(aKeyboardLayout) {
+    return synthesizeKey({layout: aKeyboardLayout.layout, keyCode: WIN_VK_RMENU,
+                          modifiers: {}, chars: ""}, "button", function() {
+      const kDescription =
+        "runAltRightKeyOnWindows(" + aKeyboardLayout.layout.currentTestName + "): ";
+      if (aKeyboardLayout.layout.hasAltGrOnWin) {
+        is(events.length, 4,
+           kDescription + "AltRight should fire 2 pairs of keydown and keyup events");
+        is(events[0].type, "keydown",
+           kDescription + "First event should be keydown of ControlLeft");
+        is(events[0].key, "Control",
+           kDescription + "First event should be keydown of ControlLeft whose key should be Control");
+        is(events[0].code, "ControlLeft",
+           kDescription + "First event should be keydown of ControlLeft");
+        is(events[0].location, KeyboardEvent.DOM_KEY_LOCATION_LEFT,
+           kDescription + "First event should be keydown of ControlLeft whose location should be DOM_KEY_LOCATION_LEFT");
+        is(events[0].keyCode, KeyboardEvent.DOM_VK_CONTROL,
+           kDescription + "First event should be keydown of ControlLeft whose keyCode should be DOM_VK_CONTROL");
+        is(events[0].ctrlKey, true,
+           kDescription + "First event should be keydown of ControlLeft whose ctrlKey should be true");
+        is(events[0].altKey, false,
+           kDescription + "First event should be keydown of ControlLeft whose altKey should be false");
+        is(events[0].getModifierState("AltGraph"), false,
+           kDescription + "First event should be keydown of ControlLeft whose getModifierState(\"AltGraph\") should be false");
+        is(events[1].type, "keydown",
+           kDescription + "Second event should be keydown of AltRight");
+        is(events[1].key, "AltGraph",
+           kDescription + "Second event should be keydown of AltRight whose key should be AltGraph");
+        is(events[1].code, "AltRight",
+           kDescription + "Second event should be keydown of AltRight");
+        is(events[1].location, KeyboardEvent.DOM_KEY_LOCATION_RIGHT,
+           kDescription + "Second event should be keydown of AltRight whose location should be DOM_KEY_LOCATION_RIGHT");
+        is(events[1].keyCode, KeyboardEvent.DOM_VK_ALT,
+           kDescription + "Second event should be keydown of AltRight whose keyCode should be DOM_VK_ALT");
+        is(events[1].ctrlKey, false,
+           kDescription + "Second event should be keydown of AltRight whose ctrlKey should be false");
+        is(events[1].altKey, false,
+           kDescription + "Second event should be keydown of AltRight whose altKey should be false");
+        is(events[1].getModifierState("AltGraph"), true,
+           kDescription + "Second event should be keydown of AltRight whose getModifierState(\"AltGraph\") should be true");
+        is(events[2].type, "keyup",
+           kDescription + "Third event should be keyup of ControlLeft");
+        is(events[2].key, "Control",
+           kDescription + "Third event should be keyup of ControlLeft whose key should be Control");
+        is(events[2].code, "ControlLeft",
+           kDescription + "Third event should be keyup of ControlLeft");
+        is(events[2].location, KeyboardEvent.DOM_KEY_LOCATION_LEFT,
+           kDescription + "Third event should be keyup of ControlLeft whose location should be DOM_KEY_LOCATION_LEFT");
+        is(events[2].keyCode, KeyboardEvent.DOM_VK_CONTROL,
+           kDescription + "Third event should be keyup of ControlLeft whose keyCode should be DOM_VK_CONTROL");
+        is(events[2].ctrlKey, false,
+           kDescription + "Third event should be keyup of ControlLeft whose ctrlKey should be false");
+        is(events[2].altKey, false,
+           kDescription + "Third event should be keyup of ControlLeft whose altKey should be false");
+        is(events[2].getModifierState("AltGraph"), true,
+           kDescription + "Third event should be keyup of ControlLeft whose getModifierState(\"AltGraph\") should be true");
+        is(events[3].type, "keyup",
+           kDescription + "Forth event should be keyup of AltRight");
+        is(events[3].key, "AltGraph",
+           kDescription + "Forth event should be keyup of AltRight whose key should be AltGraph");
+        is(events[3].code, "AltRight",
+           kDescription + "Forth event should be keyup of AltRight");
+        is(events[3].location, KeyboardEvent.DOM_KEY_LOCATION_RIGHT,
+           kDescription + "Forth event should be keyup of AltRight whose location should be DOM_KEY_LOCATION_RIGHT");
+        is(events[3].keyCode, KeyboardEvent.DOM_VK_ALT,
+           kDescription + "Forth event should be keyup of AltRight whose keyCode should be DOM_VK_ALT");
+        is(events[3].ctrlKey, false,
+           kDescription + "Third event should be keyup of AltRight whose ctrlKey should be false");
+        is(events[3].altKey, false,
+           kDescription + "Third event should be keyup of AltRight whose altKey should be false");
+        is(events[3].getModifierState("AltGraph"), false,
+           kDescription + "Third event should be keyup of AltRight whose getModifierState(\"AltGraph\") should be false");
+      } else {
+        is(events.length, 2,
+           kDescription + "AltRight should fire a pair of keydown and keyup events");
+        is(events[0].type, "keydown",
+           kDescription + "First event should be keydown of AltRight");
+        is(events[0].key, "Alt",
+           kDescription + "First event should be keydown of AltRight whose key should be Alt");
+        is(events[0].code, "AltRight",
+           kDescription + "First event should be keydown of AltRight");
+        is(events[0].location, KeyboardEvent.DOM_KEY_LOCATION_RIGHT,
+           kDescription + "First event should be keydown of AltRight whose location should be DOM_KEY_LOCATION_RIGHT");
+        is(events[0].keyCode, KeyboardEvent.DOM_VK_ALT,
+           kDescription + "First event should be keydown of AltRight whose keyCode should be DOM_VK_ALT");
+        is(events[0].ctrlKey, false,
+           kDescription + "First event should be keydown of AltRight whose ctrlKey should be false");
+        is(events[0].altKey, true,
+           kDescription + "First event should be keydown of AltRight whose altKey should be true");
+        is(events[0].getModifierState("AltGraph"), false,
+           kDescription + "First event should be keydown of AltRight whose getModifierState(\"AltGraph\") should be false");
+        is(events[1].type, "keyup",
+           kDescription + "Second event should be keyup of AltRight");
+        is(events[1].key, "Alt",
+           kDescription + "Second event should be keyup of AltRight whose key should be Alt");
+        is(events[1].code, "AltRight",
+           kDescription + "Second event should be keyup of AltRight");
+        is(events[1].location, KeyboardEvent.DOM_KEY_LOCATION_RIGHT,
+           kDescription + "Second event should be keyup of AltRight whose location should be DOM_KEY_LOCATION_RIGHT");
+        is(events[1].keyCode, KeyboardEvent.DOM_VK_ALT,
+           kDescription + "Second event should be keyup of AltRight whose keyCode should be DOM_VK_ALT");
+        is(events[1].ctrlKey, false,
+           kDescription + "Second event should be keyup of AltRight whose ctrlKey should be false");
+        is(events[1].altKey, false,
+           kDescription + "Second event should be keyup of AltRight whose altKey should be false");
+        is(events[1].getModifierState("AltGraph"), false,
+           kDescription + "Second event should be keyup of AltRight whose getModifierState(\"AltGraph\") should be false");
+      }
+
+      continueTest();
+    });
+  }
+
+  for (const kKeyboardLayout of kKeyboardLayouts) {
+    if (typeof kKeyboardLayout.canTestIt === "function" &&
+        !kKeyboardLayout.canTestIt()) {
+      continue;
+    }
+    events = [];
+    yield testKey(kKeyboardLayout);
+  }
+
+  button.addEventListener("keydown", pushEvent);
+  button.addEventListener("keyup", pushEvent);
+}
+
+function* runAllTests() {
+  yield* runKeyEventTests();
+  yield* runAccessKeyTests();
+  yield* runXULKeyTests();
+  yield* runReservedKeyTests();
+  yield* runTextInputTests();
+  yield* runAltRightKeyOnWindows();
+}
+
+var gTestContinuation = null;
+
+function continueTest()
+{
+  if (!gTestContinuation) {
+    gTestContinuation = runAllTests();
+  }
+  var ret = gTestContinuation.next();
+  if (ret.done) {
+    SimpleTest.finish();
+  } else {
+    is(ret.value, true, "Key synthesized successfully");
+  }
+}
+
+function runTest()
+{
+  if (!IS_MAC && !IS_WIN) {
+    todo(false, "This test is supported on MacOSX and Windows only. (Bug 431503)");
+    return;
+  }
+
+  if (IS_WIN && OS_VERSION >= WIN8) {
+    // Switching keyboard layout to Russian - Mnemonic causes 2 assertions in
+    // KeyboardLayout::LoadLayout().
+    const kAssertionCountDueToRussainMnemonic = 2 * 2;
+    SimpleTest.expectAssertions(kAssertionCountDueToRussainMnemonic,
+                                kAssertionCountDueToRussainMnemonic);
+  }
+  SimpleTest.waitForExplicitFinish();
+
+  clearInfobars();
+
+  continueTest();
+}
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_keypress_event_with_alt_on_mac.html b/widget/tests/test_keypress_event_with_alt_on_mac.html
new file mode 100644
index 0000000000..01d4100f97
--- /dev/null
+++ b/widget/tests/test_keypress_event_with_alt_on_mac.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Testing if keypress event is fired when alt key is pressed</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script src="/tests/SimpleTest/NativeKeyCodes.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+<div id="display">
+  <input id="input">
+  <input id="password" type="password">
+  <input id="readonly-input" readonly>
+  <textarea id="textarea"></textarea>
+  <textarea id="readonly-textarea" readonly></textarea>
+  <button id="button">button</button>
+</div>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+
+<script class="testbody" type="application/javascript">
+SimpleTest.waitForExplicitFinish();
+
+async function testNativeKey(aKeyboardLayout, aNativeKeyCode, aModifiers,
+                             aChars, aUnmodifiedChars) {
+  // XXX Need to listen keyup event here because synthesizeNativeKey() does not
+  //     guarantee that its callback will be called after "keypress" and "keyup".
+  let waitForKeyUp = new Promise(resolve => {
+    document.addEventListener("keyup", resolve, {once: true});
+  });
+  let keypress;
+  document.addEventListener("keypress", (aKeyPressEvent) => {
+    keypress = aKeyPressEvent;
+  }, {once: true});
+  synthesizeNativeKey(aKeyboardLayout, aNativeKeyCode, aModifiers, aChars, aUnmodifiedChars);
+  await waitForKeyUp;
+  return keypress;
+}
+
+async function runTests() {
+  const kTests =
+    [ { target: "input", isEditable: true },
+      { target: "password", isEditable: true },
+      { target: "readonly-input", isEditable: false },
+      { target: "textarea", isEditable: true },
+      { target: "readonly-textarea", isEditable: false },
+      { target: "button", isEditable: false } ];
+  for (const kTest of kTests) {
+    let element = document.getElementById(kTest.target);
+    element.focus();
+
+    const kDescription = kTest.target + ": ";
+
+    let keypress = await testNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {}, "a", "a");
+    ok(keypress,
+       kDescription + "'a' key press should cause firing keypress event");
+
+    keypress = await testNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {shiftKey: true}, "A", "A");
+    ok(keypress,
+       kDescription + "'a' key press with shift key should cause firing keypress event");
+    ok(keypress.shiftKey,
+       kDescription + "shiftKey of 'a' key press with shift key should be true");
+
+    // When a key inputs a character with option key, we need to unset altKey for our editor.
+    // Otherwise, altKey should be true for compatibility with the other browsers.
+    keypress = await testNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {altKey: true}, "\u00E5", "a");
+    ok(keypress,
+       kDescription + "'a' key press with option key should cause firing keypress event");
+    is(keypress.altKey, !kTest.isEditable,
+       kDescription + "altKey of 'a' key press with option key should be " + !kTest.isEditable);
+
+    keypress = await testNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {altKey: true, shiftKey: true}, "\u00C5", "A");
+    ok(keypress,
+       kDescription + "'a' key press with option key  and shift key should cause firing keypress event");
+    is(keypress.altKey, !kTest.isEditable,
+       kDescription + "altKey of 'a' key press with option key and shift key should be " + !kTest.isEditable);
+    ok(keypress.shiftKey,
+       kDescription + "shiftKey of 'a' key press with option key and shift key should be true");
+
+    keypress = await testNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {ctrlKey: true}, "\u0001", "a");
+    ok(!keypress,
+       kDescription + "'a' key press with control key should not cause firing keypress event");
+
+    keypress = await testNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {altKey: true, ctrlKey: true}, "\u0001", "a");
+    ok(!keypress,
+       kDescription + "'a' key press with option key and control key should not cause firing keypress event");
+
+    // XXX Cannot test with command key for now since keyup event won't be fired due to macOS's limitation.
+
+    // Some keys of Arabic - PC keyboard layout do not input any character with option key.
+    // In such case, we shouldn't dispatch keypress event.
+    keypress = await testNativeKey(KEYBOARD_LAYOUT_ARABIC_PC, MAC_VK_ANSI_7, {altKey: true}, "", "\u0667");
+    ok(!keypress,
+       kDescription + "'7' key press with option key should not cause firing keypress event");
+  }
+
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForFocus(runTests);
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/widget/tests/test_mouse_event_with_control_on_mac.html b/widget/tests/test_mouse_event_with_control_on_mac.html
new file mode 100644
index 0000000000..52ce206d35
--- /dev/null
+++ b/widget/tests/test_mouse_event_with_control_on_mac.html
@@ -0,0 +1,116 @@
+<html>
+<head>
+  <title>Test control+click on Mac</title>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/SpecialPowers.js"></script>
+  <script src="/tests/SimpleTest/paint_listener.js"></script>
+  <script src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+  <style>
+    #target {
+      width: 100px;
+      height: 100px;
+      background-color: lightgreen;
+    };
+  </style>
+</head>
+<body>
+<div id="target"></div>
+<script type="application/javascript">
+
+function waitAndCheckMouseEvents(aTarget, aExpectedEvents) {
+  return new Promise((aResolve, aReject) => {
+    let timer;
+    let cleanup = function() {
+      if (timer) {
+        clearTimeout(timer);
+        timer = null;
+      }
+      aTarget.removeEventListener("mousedown", listener);
+      aTarget.removeEventListener("mouseup", listener);
+      aTarget.removeEventListener("contextmenu", listener);
+      aTarget.removeEventListener("click", listener);
+      aTarget.removeEventListener("auxclick", listener);
+    };
+
+    let listener = function(aEvent) {
+      aEvent.preventDefault();
+      let expectedEvent = aExpectedEvents.shift();
+      if (!expectedEvent) {
+        cleanup();
+        ok(false, `receive unexpected ${aEvent.type} event`);
+        aReject(new Error(`receive unexpected ${aEvent.type} event`));
+        return;
+      }
+
+      isDeeply([aEvent.type, aEvent.button, aEvent.ctrlKey], expectedEvent,
+               `check received ${aEvent.type} event`);
+      if (!aExpectedEvents.length) {
+        // Wait a bit to see if there is any unexpected event.
+        timer = setTimeout(function() {
+          cleanup();
+          aResolve();
+        }, 0);
+      }
+    };
+
+    aTarget.addEventListener("mousedown", listener);
+    aTarget.addEventListener("mouseup", listener);
+    aTarget.addEventListener("contextmenu", listener);
+    aTarget.addEventListener("click", listener);
+    aTarget.addEventListener("auxclick", listener);
+  });
+}
+
+add_task(async function Init() {
+  await SimpleTest.promiseFocus();
+  await waitUntilApzStable();
+
+  let target = document.getElementById("target");
+  target.addEventListener("click", function() {
+    ok(false, `should not receive click event`);
+  });
+});
+
+add_task(async function TestMouseClickWithControl() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["dom.event.treat_ctrl_click_as_right_click.disabled", true]],
+  });
+
+  let target = document.getElementById("target");
+  let promise = waitAndCheckMouseEvents(target, [["mousedown", 0, true],
+                                                 ["contextmenu", 0, true],
+                                                 ["mouseup", 0, true]]);
+  synthesizeNativeMouseEvent({
+    type: "click",
+    target,
+    offsetX: 10,
+    offsetY: 10,
+    modifiers: { ctrlKey: true },
+  });
+  await promise;
+});
+
+add_task(async function TestOldBehavior() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["dom.event.treat_ctrl_click_as_right_click.disabled", false]],
+  });
+
+  let target = document.getElementById("target");
+  let promise = waitAndCheckMouseEvents(target, [["mousedown", 2, true],
+                                                 ["contextmenu", 2, true],
+                                                 ["mouseup", 2, true],
+                                                 ["auxclick", 2, true]]);
+  synthesizeNativeMouseEvent({
+    type: "click",
+    target,
+    offsetX: 10,
+    offsetY: 10,
+    modifiers: { ctrlKey: true },
+  });
+  await promise;
+});
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_mouse_scroll.xhtml b/widget/tests/test_mouse_scroll.xhtml
new file mode 100644
index 0000000000..82cb6a3ea3
--- /dev/null
+++ b/widget/tests/test_mouse_scroll.xhtml
@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Testing composition, text and query content events"
+  onload="setTimeout(onLoad, 0);"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+function onLoad()
+{
+  runTest();
+}
+
+function runTest()
+{
+  window.openDialog("window_mouse_scroll_win.html", "_blank",
+                    "chrome,width=600,height=600,noopener", window);
+}
+]]>
+</script>
+</window>
diff --git a/widget/tests/test_native_key_bindings_mac.html b/widget/tests/test_native_key_bindings_mac.html
new file mode 100644
index 0000000000..8767a5a77d
--- /dev/null
+++ b/widget/tests/test_native_key_bindings_mac.html
@@ -0,0 +1,336 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset='utf-8'/>
+    <title>Native Key Bindings for Cocoa Test</title>
+    <!-- Any copyright is dedicated to the Public Domain.
+         http://creativecommons.org/publicdomain/zero/1.0/ -->
+    <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+    <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+    <script src="chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js"></script>
+  </head>
+  <body>
+    <div id="editable" contenteditable>
+      <p>Stretching attack nullam stuck in a tree zzz, suspendisse cras nec
+      suspendisse lick suscipit. Nunc egestas amet litter box, nullam climb the
+      curtains biting I don't like that food tristique biting sleep on your
+      keyboard non. Lay down in your way cras nec tempus chase the red dot cras
+      nec, pharetra pharetra eat the grass leap run orci turpis attack.
+      Consectetur sleep in the sink eat I don't like that food, knock over the
+      lamp catnip in viverra tail flick zzz meow etiam enim. Ac ac hiss shed
+      everywhere kittens rhoncus, attack your ankles zzz iaculis kittens. Nullam
+      pellentesque rip the couch iaculis rhoncus nibh, give me fish orci turpis
+      purr sleep on your face quis nunc bibendum.</p>
+
+      <p>Neque jump on the table bat iaculis, adipiscing sleep on your keyboard
+      jump vel justo shed everywhere suspendisse lick. Zzz enim faucibus
+      hairball faucibus, pharetra sunbathe biting bat leap rip the couch attack.
+      Tortor nibh in viverra quis hairball nam, vulputate adipiscing sleep on
+      your keyboard purr knock over the lamp orci turpis. Vestibulum I don't
+      like that food et chase the red dot, adipiscing neque bibendum rutrum
+      accumsan quis rhoncus claw. Leap accumsan vehicula enim biting sleep on
+      your face, pharetra nam accumsan egestas kittens sunbathe. Pharetra chase
+      the red dot sniff non eat the grass, vulputate fluffy fur aliquam puking
+      judging you.</p>
+
+      <p>Claw purr sollicitudin sollicitudin lay down in your way consectetur,
+      pellentesque vehicula zzz orci turpis consectetur. I don't like that food
+      rhoncus pellentesque sniff attack, rhoncus tortor attack your ankles
+      iaculis scratched hiss vel. Tortor zzz tortor nullam rip the couch rutrum,
+      bat enim ut leap hairball iaculis. Bibendum sunbathe elit suspendisse
+      nibh, puking adipiscing sleep on your face sleep on your face zzz catnip.
+      Judging you rutrum bat sunbathe sleep on your face, jump on the table leap
+      tincidunt a faucibus sleep in the sink. Stuck in a tree tristique zzz hiss
+      in viverra nullam, quis tortor pharetra attack.</p>
+    </div>
+
+    <textarea id="textarea" cols="80">
+      Stretching attack nullam stuck in a tree zzz, suspendisse cras nec
+      suspendisse lick suscipit. Nunc egestas amet litter box, nullam climb the
+      curtains biting I don't like that food tristique biting sleep on your
+      keyboard non. Lay down in your way cras nec tempus chase the red dot cras
+      nec, pharetra pharetra eat the grass leap run orci turpis attack.
+      Consectetur sleep in the sink eat I don't like that food, knock over the
+      lamp catnip in viverra tail flick zzz meow etiam enim. Ac ac hiss shed
+      everywhere kittens rhoncus, attack your ankles zzz iaculis kittens. Nullam
+      pellentesque rip the couch iaculis rhoncus nibh, give me fish orci turpis
+      purr sleep on your face quis nunc bibendum.
+
+      Neque jump on the table bat iaculis, adipiscing sleep on your keyboard
+      jump vel justo shed everywhere suspendisse lick. Zzz enim faucibus
+      hairball faucibus, pharetra sunbathe biting bat leap rip the couch attack.
+      Tortor nibh in viverra quis hairball nam, vulputate adipiscing sleep on
+      your keyboard purr knock over the lamp orci turpis. Vestibulum I don't
+      like that food et chase the red dot, adipiscing neque bibendum rutrum
+      accumsan quis rhoncus claw. Leap accumsan vehicula enim biting sleep on
+      your face, pharetra nam accumsan egestas kittens sunbathe. Pharetra chase
+      the red dot sniff non eat the grass, vulputate fluffy fur aliquam puking
+      judging you.
+
+      Claw purr sollicitudin sollicitudin lay down in your way consectetur,
+      pellentesque vehicula zzz orci turpis consectetur. I don't like that food
+      rhoncus pellentesque sniff attack, rhoncus tortor attack your ankles
+      iaculis scratched hiss vel. Tortor zzz tortor nullam rip the couch rutrum,
+      bat enim ut leap hairball iaculis. Bibendum sunbathe elit suspendisse
+      nibh, puking adipiscing sleep on your face sleep on your face zzz catnip.
+      Judging you rutrum bat sunbathe sleep on your face, jump on the table leap
+      tincidunt a faucibus sleep in the sink. Stuck in a tree tristique zzz hiss
+      in viverra nullam, quis tortor pharetra attack.
+    </textarea>
+
+    <input id="input" type="text"
+      value="Stretching attack nullam stuck in a tree zzz, suspendisse cras nec
+      suspendisse lick suscipit. Nunc egestas amet litter box, nullam climb the
+      curtains biting I don't like that food tristique biting sleep on your
+      keyboard non. Lay down in your way cras nec tempus chase the red dot cras
+      nec, pharetra pharetra eat the grass leap run orci turpis attack.
+      Consectetur sleep in the sink eat I don't like that food, knock over the
+      lamp catnip in viverra tail flick zzz meow etiam enim. Ac ac hiss shed
+      everywhere kittens rhoncus, attack your ankles zzz iaculis kittens.
+      Nullam pellentesque rip the couch iaculis rhoncus nibh, give me fish orci
+      turpis purr sleep on your face quis nunc bibendum.">
+
+    <script type="text/javascript">
+      SimpleTest.waitForExplicitFinish();
+
+      let synthesizedKeys = [];
+      let expectations = [];
+
+      // Move to beginning of line
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_LeftArrow,
+                            {ctrlKey: true}, "\uf702", "\uf702"]);
+      expectations.push({
+        editable: [0, 0],
+        textarea: [0, 0],
+        input:    [0, 0],
+      });
+
+      // Move to end of line
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_RightArrow,
+                            {ctrlKey: true}, "\uf703", "\uf703"]);
+      expectations.push({
+        editable: [73, 73],
+        textarea: [72, 72],
+        input:    [732, 732],
+      });
+
+      // Move down
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_N,
+                            {ctrlKey: true}, "\u000e", "n"]);
+      expectations.push({
+        editable: [140, 140],
+        textarea: [145, 145],
+        input:    [732, 732],
+      });
+
+      // Move to beginning of line
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_LeftArrow,
+                            {ctrlKey: true}, "\uf702", "\uf702"]);
+      expectations.push({
+        editable: [73, 73],
+        textarea: [73, 73],
+        input:    [0, 0],
+      });
+
+      // Move word right and modify selection
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_RightArrow,
+                            {altKey: true, shiftKey: true}, "\uf703", "\uf703"]);
+      expectations.push({
+        editable: [73, 84],
+        textarea: [73, 90],
+        input:    [0, 10],
+      });
+
+      // Move word right
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_RightArrow,
+                            {altKey: true}, "\uf703", "\uf703"]);
+      expectations.push({
+        editable: [84, 84],
+        textarea: [90, 90],
+        input:    [10, 10],
+      });
+
+      // Move word right
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_RightArrow,
+                            {altKey: true}, "\uf703", "\uf703"]);
+      expectations.push({
+        editable: [89, 89],
+        textarea: [95, 95],
+        input:    [17, 17],
+      });
+
+      // Move down and modify selection
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_DownArrow,
+                            {shiftKey: true}, "\uf701", "\uf701"]);
+      expectations.push({
+        editable: [89, 171],
+        textarea: [95, 175],
+        input:    [17, 732],
+      });
+
+      // Move backward and modify selection
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_B,
+                            {ctrlKey: true, shiftKey: true}, "\u0002", "B"]);
+      expectations.push({
+        editable: [89, 170],
+        textarea: [95, 174],
+        input:    [17, 731],
+      });
+
+      // Delete forward
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_D,
+                            {ctrlKey: true}, "\u0004", "d"]);
+      expectations.push({
+        editable: [89, 89],
+        textarea: [95, 95],
+        input:    [17, 17],
+      });
+
+      // Delete backward
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_H,
+                            {ctrlKey: true}, "\u0008", "h"]);
+      expectations.push({
+        editable: [88, 88],
+        textarea: [94, 94],
+        input:    [16, 16],
+      });
+
+      // Move backward
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_B,
+                            {ctrlKey: true}, "\u0002", "b"]);
+      expectations.push({
+        editable: [87, 87],
+        textarea: [93, 93],
+        input:    [15, 15],
+      });
+
+      // Move to beginning of paragraph (line for now)
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A,
+                            {ctrlKey: true}, "\u0001", "a"]);
+      expectations.push({
+        editable: [73, 73],
+        textarea: [73, 73],
+        input:    [0, 0],
+      });
+
+      // Move forward
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_F,
+                            {ctrlKey: true}, "\u0006", "f"]);
+      expectations.push({
+        editable: [74, 74],
+        textarea: [74, 74],
+        input:    [1, 1],
+      });
+
+      // Move word right
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_RightArrow,
+                            {altKey: true}, "\uf703", "\uf703"]);
+      expectations.push({
+        editable: [84, 84],
+        textarea: [90, 90],
+        input:    [10, 10],
+      });
+
+      // Move word right
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_RightArrow,
+                            {altKey: true}, "\uf703", "\uf703"]);
+      expectations.push({
+        editable: [88, 88],
+        textarea: [94, 94],
+        input:    [17, 17],
+      });
+
+      // Delete to end of paragraph (line for now)
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_K,
+                            {ctrlKey: true}, "\u000b", "k"]);
+      expectations.push({
+        editable: [88, 88],
+        textarea: [94, 94],
+        input:    [17, 17],
+      });
+
+      // Move backward and modify selection
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_B,
+                            {ctrlKey: true, shiftKey: true}, "\u0002", "B"]);
+      expectations.push({
+        editable: [88, 87],
+        textarea: [93, 94],
+        input:    [16, 17],
+      });
+
+      // Move to end of paragraph (line for now)
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_E,
+                            {ctrlKey: true}, "\u0005", "e"]);
+      expectations.push({
+        editable: [139, 139],
+        textarea: [94, 94],
+        input:    [17, 17],
+      });
+
+      // Move up
+      synthesizedKeys.push([KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_P,
+                            {ctrlKey: true}, "\u0010", "p"]);
+      expectations.push({
+        editable: [73, 73],
+        textarea: [21, 21],
+        input:    [0, 0],
+      });
+
+      function checkWindowSelection(aElement, aSelection) {
+        let selection = window.getSelection();
+
+        is(selection.anchorOffset, aSelection[aElement.id][0],
+           aElement.id + ": Incorrect anchor offset");
+        is(selection.focusOffset, aSelection[aElement.id][1],
+           aElement.id + ": Incorrect focus offset");
+      }
+
+      function checkElementSelection(aElement, aSelection) {
+        is(aElement.selectionStart, aSelection[aElement.id][0],
+           aElement.id + ": Incorrect selection start");
+        is(aElement.selectionEnd, aSelection[aElement.id][1],
+           aElement.id + ": Incorrect selection end");
+      }
+
+      function* testRun(aElement, aSelectionCheck, aCallback) {
+        if (document.activeElement) {
+          document.activeElement.blur();
+        }
+
+        aElement.focus();
+
+        for (let i = 0; i < synthesizedKeys.length; i++) {
+          synthesizedKeys[i].push(function() {
+            aSelectionCheck(aElement, expectations[i]);
+            continueTest();
+          });
+          var synthOk = synthesizeNativeKey.apply(null, synthesizedKeys[i]);
+          synthesizedKeys[i].pop();
+          yield synthOk;
+        }
+      }
+
+      function* doTest() {
+        yield* testRun(document.getElementById("editable"), checkWindowSelection);
+        yield* testRun(document.getElementById("textarea"), checkElementSelection);
+        yield* testRun(document.getElementById("input"), checkElementSelection);
+      }
+
+      let gTestContinuation = null;
+
+      function continueTest() {
+        if (!gTestContinuation) {
+          gTestContinuation = doTest();
+        }
+        var ret = gTestContinuation.next();
+        if (ret.done) {
+          SimpleTest.finish();
+        } else {
+          is(ret.value, true, "Successfully synthesized key");
+        }
+      }
+
+      SimpleTest.waitForFocus(continueTest);
+    </script>
+  </body>
+</html>
diff --git a/widget/tests/test_native_menus.xhtml b/widget/tests/test_native_menus.xhtml
new file mode 100644
index 0000000000..d62c57f21c
--- /dev/null
+++ b/widget/tests/test_native_menus.xhtml
@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Native menu system tests"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+window.openDialog("native_menus_window.xhtml", "NativeMenuWindow", 
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_panel_mouse_coords.xhtml b/widget/tests/test_panel_mouse_coords.xhtml
new file mode 100644
index 0000000000..43c4e10249
--- /dev/null
+++ b/widget/tests/test_panel_mouse_coords.xhtml
@@ -0,0 +1,78 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=835044
+-->
+<window title="Mozilla Bug 835044"
+        onload="startTest()"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>
+
+<panel id="thepanel" level="parent"
+       onpopupshown="sendMouseEvent();"
+       onmousemove="checkCoords(event);"
+       style="width: 80px; height: 80px">
+</panel>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=835044"
+     id="anchor"
+     target="_blank">Mozilla Bug 835044</a>
+  </body>
+
+  <!-- test code goes here -->
+  <script type="application/javascript">
+  <![CDATA[
+SimpleTest.waitForExplicitFinish();
+
+let panel = document.getElementById('thepanel');
+let rect = null;
+
+
+function startTest() {
+  // This first event is to ensure that the next event will have different
+  // coordinates to the previous mouse position, and so actually generates
+  // mouse events.  The mouse is not moved off the window, as that might
+  // move focus to another application.
+  synthesizeNativeMouseEvent({
+    type: "mousemove",
+    screenX: window.mozInnerScreenX,
+    screenY: window.mozInnerScreenY,
+    elementOnWidget: window.documentElement,
+  });
+
+  panel.openPopup(document.getElementById("anchor"), "after_start");
+}
+
+function sendMouseEvent() {
+  rect = panel.getBoundingClientRect();
+  synthesizeNativeMouseEvent({
+    type: "mousemove",
+    target: panel,
+    offsetX: 10,
+    offsetY: 20,
+  });
+}
+
+function checkCoords(event) {
+  if (!rect) {
+    return;
+  }
+  isfuzzy(event.clientX, rect.left + 10, window.devicePixelRatio, "Motion x coordinate");
+  isfuzzy(event.clientY, rect.top + 20, window.devicePixelRatio, "Motion y coordinate");
+  info(`Event client: ${event.clientX}, ${event.clientY}, panel client: ${rect.left}, ${rect.top}`);
+  info(`Event screen: ${event.screenX}, ${event.screenY}, panel screen: ${panel.screenX}, ${panel.screenY}`);
+  info(`offset client: ${event.clientX - rect.left}, ${event.clientY - rect.top}`);
+  info(`offset screen: ${event.screenX - panel.screenX}, ${event.screenY - panel.screenY}`);
+  done();
+}
+
+function done() {
+  SimpleTest.finish();
+}
+  ]]>
+  </script>
+</window>
diff --git a/widget/tests/test_picker_no_crash.html b/widget/tests/test_picker_no_crash.html
new file mode 100644
index 0000000000..dbb75627b5
--- /dev/null
+++ b/widget/tests/test_picker_no_crash.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<title>Test for crashes when the parent window of a file picker is closed via script</title>
+<script src="/tests/SimpleTest/SimpleTest.js"></script>
+<script src="/tests/SimpleTest/EventUtils.js"></script>
+<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+<script>
+SimpleTest.requestFlakyTimeout("testing we don't crash");
+
+async function testPicker(id) {
+  let childWindow = window.open("window_picker_no_crash_child.html", "childWindow", "width=500,height=500");
+  await SimpleTest.promiseFocus(childWindow);
+  ok(!childWindow.clicked, "Shouldn't have clicked");
+  synthesizeMouseAtCenter(childWindow.document.getElementById(id), {}, childWindow);
+  ok(childWindow.clicked, "Should have clicked");
+  childWindow.close();
+}
+
+add_task(async function test_simple() {
+  await testPicker("uploadbox");
+});
+
+add_task(async function test_multiple() {
+  await testPicker("multiple");
+});
+
+add_task(async function wait() {
+  await new Promise(r => setTimeout(r, 1000));
+  ok(true, "browser didn't crash");
+});
+</script>
diff --git a/widget/tests/test_platform_colors.xhtml b/widget/tests/test_platform_colors.xhtml
new file mode 100644
index 0000000000..8f9860d85b
--- /dev/null
+++ b/widget/tests/test_platform_colors.xhtml
@@ -0,0 +1,95 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Mac platform colors"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=518395">Mozilla Bug 518395</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+<box id="colorbox"></box>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+var colors = {
+  "activeborder": ["rgb(0, 0, 0)"],
+  "activecaption": ["rgb(204, 204, 204)"],
+  "appworkspace": ["rgb(255, 255, 255)"],
+  "background": ["rgb(99, 99, 206)"],
+  "buttonface": ["rgb(240, 240, 240)"],
+  "buttonhighlight": ["rgb(255, 255, 255)"],
+  "buttonshadow": ["rgb(220, 220, 220)"],
+  "buttontext": ["rgb(0, 0, 0)"],
+  "captiontext": ["rgb(0, 0, 0)"],
+  "graytext": ["rgb(127, 127, 127)"],
+  "highlight": ["rgb(115, 132, 153)", "rgb(127, 127, 127)", "rgb(56, 117, 215)", "rgb(255, 193, 31)", "rgb(243, 70, 72)", "rgb(255, 138, 34)", "rgb(102, 197, 71)", "rgb(140, 78, 184)"],
+  "highlighttext": ["rgb(255, 255, 255)", "rgb(255, 254, 254)", "rgb(254, 255, 254)"],
+  "inactiveborder": ["rgb(255, 255, 255)"],
+  "inactivecaption": ["rgb(255, 255, 255)"],
+  "inactivecaptiontext": ["rgb(69, 69, 69)"],
+  "infobackground": ["rgb(255, 255, 199)"],
+  "infotext": ["rgb(0, 0, 0)"],
+  "menu": ["rgb(255, 255, 255)", "rgb(254, 255, 254)", "rgb(255, 254, 254)"],
+  "menutext": ["rgb(0, 0, 0)"],
+  "scrollbar": ["rgb(170, 170, 170)"],
+  "threeddarkshadow": ["rgb(220, 220, 220)"],
+  "threedface": ["rgb(240, 240, 240)"],
+  "threedhighlight": ["rgb(255, 255, 255)"],
+  "threedlightshadow": ["rgb(218, 218, 218)"],
+  "threedshadow": ["rgb(224, 224, 224)"],
+  "window": ["rgb(255, 255, 255)"],
+  "windowframe": ["rgb(204, 204, 204)"],
+  "windowtext": ["rgb(0, 0, 0)"],
+  "-moz-activehyperlinktext": ["rgb(238, 0, 0)"],
+  "-moz-buttonhoverface": ["rgb(240, 240, 240)"],
+  "-moz-buttonhovertext": ["rgb(0, 0, 0)"],
+  "-moz-cellhighlight": ["rgb(212, 212, 212)", "rgb(220, 220, 220)"],
+  "-moz-cellhighlighttext": ["rgb(0, 0, 0)"],
+  "-moz-eventreerow": ["rgb(255, 255, 255)"],
+  "-moz-field": ["rgb(255, 255, 255)"],
+  "-moz-fieldtext": ["rgb(0, 0, 0)"],
+  "-moz-dialog": ["rgb(232, 232, 232)"],
+  "-moz-dialogtext": ["rgb(0, 0, 0)"],
+  "-moz-hyperlinktext": ["rgb(0, 0, 238)"],
+  "-moz-html-cellhighlight": ["rgb(212, 212, 212)"],
+  "-moz-html-cellhighlighttext": ["rgb(0, 0, 0)"],
+  "-moz-buttonactivetext": ["rgb(0, 0, 0)", "rgb(255, 255, 255)"],
+  "-moz-mac-defaultbuttontext": ["rgb(0, 0, 0)", "rgb(255, 255, 255)"],
+  //"-moz-mac-focusring": ["rgb(83, 144, 210)", "rgb(95, 112, 130)", "rgb(63, 152, 221)", "rgb(108, 126, 141)"],
+  "-moz-mac-menutextdisable": ["rgb(152, 152, 152)"],
+  "-moz-mac-menutextselect": ["rgb(255, 255, 255)"],
+  "-moz-mac-disabledtoolbartext": ["rgb(127, 127, 127)"],
+  "-moz-menuhover": ["rgb(115, 132, 153)", "rgb(127, 127, 127)", "rgb(56, 117, 215)", "rgb(255, 193, 31)", "rgb(243, 70, 72)", "rgb(255, 138, 34)", "rgb(102, 197, 71)", "rgb(140, 78, 184)"],
+  "-moz-menuhovertext": ["rgb(255, 255, 255)", "rgb(255, 254, 254)", "rgb(254, 255, 254)"],
+  //"-moz-menubarhovertext": ["rgb(255, 255, 255)"],
+  "-moz-oddtreerow": ["rgb(236, 242, 254)", "rgb(240, 240, 240)", "rgb(243, 245, 250)", "rgb(243, 246, 250)", "rgb(245, 245, 245)"],
+  "-moz-visitedhyperlinktext": ["rgb(85, 26, 139)"],
+  "currentcolor": ["rgb(0, 0, 0)"],
+  "-moz-comboboxtext": ["rgb(0, 0, 0)"],
+  "-moz-combobox": ["rgb(255, 255, 255)"]
+};
+
+var colorbox = document.getElementById('colorbox');
+
+for (var c in colors) {
+  dump("testing color " + c + "\n");
+  colorbox.style.backgroundColor = c;
+  var rgb = document.defaultView.getComputedStyle(colorbox).getPropertyValue('background-color');
+  ok(colors[c].includes(rgb) || colors[c].length == 8, 'platform color ' + c + ' is wrong: ' + rgb);
+}
+
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_position_on_resize.xhtml b/widget/tests/test_position_on_resize.xhtml
new file mode 100644
index 0000000000..a7c5551018
--- /dev/null
+++ b/widget/tests/test_position_on_resize.xhtml
@@ -0,0 +1,90 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+
+<window title="Window Position On Resize Test"
+        onload="startTest()"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>
+
+<script class="testbody" type="application/javascript"><![CDATA[
+  SimpleTest.waitForExplicitFinish();
+  let win, x, y;
+
+  function startTest() {
+    win = window.browsingContext.topChromeWindow.openDialog(
+        "about:blank",
+        null,
+        "chrome,dialog=no,outerHeight=170,outerWidth=200");
+    waitForSuccess(function() { return SpecialPowers.DOMWindowUtils.paintCount },
+                   "No paint received", checkInitialSize);
+  }
+
+  function checkInitialSize() {
+    is(win.outerHeight,170, "initial outerHeight");
+    is(win.outerWidth, 200, "initial outerWidth");
+    x = win.screenX;
+    y = win.screenY;
+    shrink();
+  }
+  function shrink() {
+    win.resizeTo(180, 160);
+    waitForSuccess(function() { return win.outerHeight == 160 },
+                   "outerHeight did not change to 160", checkShrink);
+  }
+  function checkShrink() {
+    is(win.outerWidth, 180, "resized outerWidth");
+    is(win.screenY, y, "resized window top should not change");
+    y = win.screenY;
+    restore();
+  }
+  function restore() {
+    win.resizeBy(20, 10);
+    waitForSuccess(function() { return win.outerHeight == 170 },
+                   "outerHeight did not change to 170", checkRestore);
+  }
+  function checkRestore() {
+    is(win.outerWidth, 200, "restored outerWidth");
+    is(win.screenX, x, "restored window left should not change");
+    is(win.screenY, y, "restored window top should not change");
+    done();
+  }
+  function done() {
+    win.close();
+    SimpleTest.finish();
+  }
+
+  function waitForSuccess(testForSuccess, failureMsg, nextFunc) {
+    var waitCount = 0;
+
+    function repeatWait() {
+      ++waitCount;
+
+      if (testForSuccess()) {
+        nextFunc();
+      }
+      else if (waitCount > 50) {
+        ok(false, failureMsg);
+        nextFunc();
+      } else {
+        setTimeout(repeatWait, 100);
+      }
+    }
+
+    repeatWait();
+  }
+]]></script>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<p id="display">
+</p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+</body>
+
+</window>
diff --git a/widget/tests/test_secure_input.html b/widget/tests/test_secure_input.html
new file mode 100644
index 0000000000..846465b4c2
--- /dev/null
+++ b/widget/tests/test_secure_input.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Test for secure input mode</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+  <script src="chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js"></script>
+  <link rel="stylesheet" type="text/css"
+          href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+</head>
+<body>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+
+<p>
+  <input id="input_text" type="text"><br>
+  <input id="input_password" type="password"><br>
+  <input id="input_text_readonly" type="text" readonly><br>
+  <input id="input_text_ime_mode_disabled" type="text" style="ime-mode: disabled;"><br>
+  <input id="input_change" type="text"><br>
+  <textarea id="textarea"></textarea><br>
+</p>
+<div id="contenteditable" contenteditable style="min-height: 3em;"></div>
+
+<script class="testbody" type="application/javascript">
+
+  SimpleTest.waitForExplicitFinish();
+
+  function sendAKeyEvent() {
+    synthesizeNativeKey(KEYBOARD_LAYOUT_EN_US, MAC_VK_ANSI_A, {}, "a", "a");
+  }
+
+  function isFocused(aElement) {
+    return (SpecialPowers.focusManager.focusedElement == aElement);
+  }
+
+  function runTest() {
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on the document");
+    $("input_text").focus();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <input type=\"text\">");
+    $("input_password").focus();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <input type=\"password\">");
+    $("input_password").blur();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on the document after blur() of <input type=\"password\">");
+    $("input_password").focus();
+    $("input_text_readonly").focus();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <input type=\"text\" readonly>");
+    $("input_password").focus();
+    $("input_text_ime_mode_disabled").focus();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <input type=\"text\" style=\"ime-mode: disabled;\">");
+    $("input_password").focus();
+    $("textarea").focus();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <textarea>");
+    $("input_password").focus();
+    $("contenteditable").focus();
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <div contenteditable>");
+
+    $("input_change").focus();
+    $("input_change").type = "password";
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <input type=\"password\"> changed from type=\"text\"");
+    $("input_change").type = "text";
+    sendAKeyEvent();
+    ok(true, "Not crashed: input on <input type=\"text\"> changed from type=\"password\"");
+
+    var otherWindow =
+      window.browsingContext.topChromeWindow.open("file_secure_input.html",
+                                                  "_blank", "chrome,width=100,height=100");
+    ok(otherWindow, "failed to open other window");
+    if (!otherWindow) {
+      SimpleTest.finish();
+      return;
+    }
+
+    $("input_text").focus();
+    otherWindow.focus();
+
+    SimpleTest.waitForFocus(function() {
+      window.focus();
+      sendAKeyEvent();
+      ok(isFocused($("input_text")), "focused element isn't <input type=\"text\">");
+      ok(true, "Not crashed: input on <input type=\"text\"> after the other document has focus");
+
+      $("input_password").focus();
+      otherWindow.focus();
+      window.focus();
+      sendAKeyEvent();
+      ok(isFocused($("input_password")), "focused element isn't <input type=\"password\">");
+      ok(true, "Not crashed: input on <input type=\"password\"> after the other document has focus");
+
+      $("input_text").focus();
+      otherWindow.focus();
+      otherWindow.document.getElementById("text").focus();
+      window.focus();
+      sendAKeyEvent();
+      ok(isFocused($("input_text")), "focused element isn't <input type=\"text\">");
+      ok(true, "Not crashed: input on <input type=\"text\"> after the other document's <input type=\"text\"> has focus");
+
+      $("input_password").focus();
+      otherWindow.focus();
+      otherWindow.document.getElementById("text").focus();
+      window.focus();
+      sendAKeyEvent();
+      ok(isFocused($("input_password")), "focused element isn't <input type=\"password\">");
+      ok(true, "Not crashed: input on <input type=\"password\"> after the other document's <input type=\"text\"> has focus");
+
+      $("input_text").focus();
+      otherWindow.focus();
+      otherWindow.document.getElementById("password").focus();
+      window.focus();
+      sendAKeyEvent();
+      ok(isFocused($("input_text")), "focused element isn't <input type=\"text\">");
+      ok(true, "Not crashed: input on <input type=\"text\"> after the other document's <input type=\"password\"> has focus");
+
+      $("input_password").focus();
+      otherWindow.focus();
+      otherWindow.document.getElementById("password").focus();
+      window.focus();
+      sendAKeyEvent();
+      ok(isFocused($("input_password")), "focused element isn't <input type=\"password\">");
+      ok(true, "Not crashed: input on <input type=\"password\"> after the other document's <input type=\"password\"> has focus");
+
+      SimpleTest.finish();
+    }, otherWindow);
+  }
+
+  SimpleTest.waitForFocus(runTest);
+</script>
+</body>
+</html>
diff --git a/widget/tests/test_sizemode_events.xhtml b/widget/tests/test_sizemode_events.xhtml
new file mode 100644
index 0000000000..bd1e3a38d1
--- /dev/null
+++ b/widget/tests/test_sizemode_events.xhtml
@@ -0,0 +1,148 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Test for bug 715867"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody">
+<![CDATA[
+
+const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
+
+let gWindow = null;
+
+const kIsLinux = navigator.platform.includes("Lin");
+const kIsMacOS = navigator.platform.includes("Mac");
+// On Linux and macOS sizemode changes might be async.
+const kAsyncChanges = kIsLinux || kIsMacOS;
+
+let gSizeModeDidChange = false;
+let gSizeModeDidChangeTo = 0;
+
+function sizemodeChanged(e) {
+  gSizeModeDidChange = true;
+  gSizeModeDidChangeTo = gWindow.windowState;
+}
+
+async function expectSizeModeChange(newMode, duringActionCallback) {
+  gSizeModeDidChange = false;
+
+  let promise = null;
+  if (kAsyncChanges) {
+    if (newMode) {
+      promise = new Promise(resolve => {
+        gWindow.addEventListener("sizemodechange", function() {
+          SimpleTest.executeSoon(resolve);
+        }, { once: true })
+      });
+    } else {
+      promise = new Promise(SimpleTest.executeSoon);
+    }
+  }
+
+  duringActionCallback();
+
+  if (promise) {
+    await promise;
+  }
+
+  if (newMode == 0) {
+    // No change should have taken place, no event should have fired.
+    ok(!gSizeModeDidChange, "No sizemodechange event should have fired.");
+  } else {
+    // Size mode change event was expected to fire.
+    ok(gSizeModeDidChange, "A sizemodechanged event should have fired.");
+    is(gSizeModeDidChangeTo, newMode, "The new sizemode should have the expected value.");
+    const expectedHidden = newMode == gWindow.STATE_MINIMIZED || gWindow.isFullyOccluded;
+    if (gWindow.document.hidden != expectedHidden) {
+      await new Promise(resolve => {
+        gWindow.addEventListener("visibilitychange", resolve, { once: true });
+      });
+    }
+    is(gWindow.document.hidden, expectedHidden, "Should be inactive if minimized or occluded.");
+  }
+}
+
+function startTest() {
+  openWindow();
+}
+
+function openWindow() {
+  gWindow = window.browsingContext.topChromeWindow
+                  .open('empty_window.xhtml', '_blank', 'chrome,screenX=50,screenY=50,width=200,height=200,resizable');
+  SimpleTest.waitForFocus(runTest, gWindow);
+}
+
+async function runTest() {
+  // Install event handler.
+  gWindow.addEventListener("sizemodechange", sizemodeChanged);
+
+  // Run tests.
+  info("Testing minimize()");
+  await expectSizeModeChange(gWindow.STATE_MINIMIZED, function () {
+    gWindow.minimize();
+  });
+
+  info("Testing restore() after minimize()");
+  await expectSizeModeChange(gWindow.STATE_NORMAL, function () {
+    gWindow.restore();
+  });
+
+  info("Testing maximize()");
+  await expectSizeModeChange(gWindow.STATE_MAXIMIZED, function () {
+    gWindow.maximize();
+  });
+
+  info("Testing restore() after maximize()");
+  await expectSizeModeChange(gWindow.STATE_NORMAL, function () {
+    gWindow.restore();
+  });
+
+  // Normal window resizing shouldn't fire a sizemodechanged event, bug 715867.
+  info("Testing resizeTo() horizontal");
+  await expectSizeModeChange(0, function () {
+    gWindow.resizeTo(gWindow.outerWidth + 10, gWindow.outerHeight);
+  });
+
+  info("Testing resizeTo() vertical");
+  await expectSizeModeChange(0, function () {
+    gWindow.resizeTo(gWindow.outerWidth, gWindow.outerHeight + 10);
+  });
+
+  // Resizing a maximized window should change to normal sizemode.
+  info("maximize() in preparation for resize");
+  await expectSizeModeChange(gWindow.STATE_MAXIMIZED, function () {
+    gWindow.maximize();
+  });
+
+  info("Testing resizeTo() from maximized");
+  await expectSizeModeChange(gWindow.STATE_NORMAL, function () {
+    // MacOS treats windows close to the available screen size as maximized.
+    // Shrinking the window by only 10px isn't enough to change the sizemode.
+    gWindow.resizeTo(gWindow.outerWidth / 2, gWindow.outerHeight / 2);
+  });
+
+  gWindow.removeEventListener("sizemodechange", sizemodeChanged);
+  gWindow.close();
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForExplicitFinish();
+SimpleTest.waitForFocus(startTest);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_standalone_native_menu.xhtml b/widget/tests/test_standalone_native_menu.xhtml
new file mode 100644
index 0000000000..96e41036c3
--- /dev/null
+++ b/widget/tests/test_standalone_native_menu.xhtml
@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Standalone Native Menu tests"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+window.openDialog("standalone_native_menu_window.xhtml", "StandaloneNativeMenuWindow", 
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_surrogate_pair_native_key_handling.xhtml b/widget/tests/test_surrogate_pair_native_key_handling.xhtml
new file mode 100644
index 0000000000..98834e1206
--- /dev/null
+++ b/widget/tests/test_surrogate_pair_native_key_handling.xhtml
@@ -0,0 +1,178 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window id="window1" title="Test handling of native key input for surrogate pairs"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>
+  <script src="chrome://mochikit/content/tests/SimpleTest/NativeKeyCodes.js"/>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+  <script type="application/javascript"><![CDATA[
+    SimpleTest.waitForExplicitFinish();
+    SimpleTest.waitForFocus(async () => {
+      function promiseSynthesizeNativeKey(
+        aNativeKeyCode,
+        aChars,
+      ) {
+        return new Promise(resolve => {
+          synthesizeNativeKey(
+            KEYBOARD_LAYOUT_EN_US,
+            aNativeKeyCode,
+            {},
+            aChars,
+            aChars,
+            resolve
+          );
+        });
+      }
+      function getEventData(aEvent) {
+        return `{ type: "${aEvent.type}", key: "${aEvent.key}", code: "${
+          aEvent.code
+        }", keyCode: 0x${
+          aEvent.keyCode.toString(16).toUpperCase()
+        }, charCode: 0x${aEvent.charCode.toString(16).toUpperCase()} }`;
+      }
+      function getEventArrayData(aEvents) {
+        if (!aEvents.length) {
+          return "[]";
+        }
+        let result = "[\n";
+        for (const e of aEvents) {
+          result += `  ${getEventData(e)}\n`;
+        }
+        return result + "]";
+      }
+      let events = [];
+      function onKey(aEvent) {
+        events.push(aEvent);
+      }
+      window.addEventListener("keydown", onKey);
+      window.addEventListener("keypress", onKey);
+      window.addEventListener("keyup", onKey);
+
+      async function runTests(
+        aTestPerSurrogateKeyPress,
+        aTestIllFormedUTF16KeyValue = false
+      ) {
+        await SpecialPowers.pushPrefEnv({
+          set: [
+            ["dom.event.keypress.dispatch_once_per_surrogate_pair", !aTestPerSurrogateKeyPress],
+            ["dom.event.keypress.key.allow_lone_surrogate", aTestIllFormedUTF16KeyValue],
+          ],
+        });
+        const settingDescription =
+          `aTestPerSurrogateKeyPress=${
+            aTestPerSurrogateKeyPress
+          }, aTestIllFormedUTF16KeyValue=${aTestIllFormedUTF16KeyValue}`;
+        const allowIllFormedUTF16 =
+          aTestPerSurrogateKeyPress && aTestIllFormedUTF16KeyValue;
+
+        // If the keyboard layout has a key to introduce a surrogate pair,
+        // one set of WM_KEYDOWN and WM_KEYUP are generated and it's translated
+        // to two WM_CHARs.
+        await (async function test_one_key_press() {
+          events = [];
+          await promiseSynthesizeNativeKey(WIN_VK_A, "\uD83E\uDD14");
+          const keyCodeA = "A".charCodeAt(0);
+          is(
+            getEventArrayData(events),
+            getEventArrayData(
+              // eslint-disable-next-line no-nested-ternary
+              aTestPerSurrogateKeyPress
+                ? (
+                  allowIllFormedUTF16
+                    ? [
+                        { type: "keydown",  key: "\uD83E\uDD14", code: "KeyA", keyCode: keyCodeA, charCode: 0 },
+                        { type: "keypress", key: "\uD83E",       code: "KeyA", keyCode: 0,        charCode: 0xD83E },
+                        { type: "keypress", key: "\uDD14",       code: "KeyA", keyCode: 0,        charCode: 0xDD14 },
+                        { type: "keyup",    key: "a",            code: "KeyA", keyCode: keyCodeA, charCode: 0 }, // Cannot set .key properly without a hack
+                      ]
+                    : [
+                        { type: "keydown",  key: "\uD83E\uDD14", code: "KeyA", keyCode: keyCodeA, charCode: 0 },
+                        { type: "keypress", key: "\uD83E\uDD14", code: "KeyA", keyCode: 0,        charCode: 0xD83E },
+                        { type: "keypress", key: "",             code: "KeyA", keyCode: 0,        charCode: 0xDD14 },
+                        { type: "keyup",    key: "a",            code: "KeyA", keyCode: keyCodeA, charCode: 0 }, // Cannot set .key properly without a hack
+                      ]
+                  )
+                : [
+                    { type: "keydown",  key: "\uD83E\uDD14", code: "KeyA", keyCode: keyCodeA, charCode: 0 },
+                    { type: "keypress", key: "\uD83E\uDD14", code: "KeyA", keyCode: 0,        charCode: 0x1F914 },
+                    { type: "keyup",    key: "a",            code: "KeyA", keyCode: keyCodeA, charCode: 0 }, // Cannot set .key properly without a hack
+                  ]
+            ),
+            `test_one_key_press(${
+              settingDescription
+            }): Typing surrogate pair should cause one set of keydown and keyup events with ${
+              aTestPerSurrogateKeyPress ? "2 keypress events" : "a keypress event"
+            }`
+          );
+        })();
+
+        // If a surrogate pair is sent with SendInput API, 2 sets of keyboard
+        // events are generated.  E.g., Emojis in the touch keyboard on Win10 or
+        // later.
+        await (async function test_send_input() {
+          events = [];
+          // Virtual keycode for the WM_KEYDOWN/WM_KEYUP is VK_PACKET.
+          await promiseSynthesizeNativeKey(WIN_VK_PACKET, "\uD83E");
+          await promiseSynthesizeNativeKey(WIN_VK_PACKET, "\uDD14");
+          // WM_KEYDOWN, WM_CHAR and WM_KEYUP for the high surrogate input
+          // shouldn't cause DOM events.
+          is(
+            getEventArrayData(events),
+            getEventArrayData(
+              // eslint-disable-next-line no-nested-ternary
+              aTestPerSurrogateKeyPress
+                ? (
+                  allowIllFormedUTF16
+                    ? [
+                        { type: "keydown",  key: "\uD83E\uDD14", code: "", keyCode: 0, charCode: 0 },
+                        { type: "keypress", key: "\uD83E",       code: "", keyCode: 0, charCode: 0xD83E },
+                        { type: "keypress", key: "\uDD14",       code: "", keyCode: 0, charCode: 0xDD14 },
+                        { type: "keyup",    key: "",             code: "", keyCode: 0, charCode: 0 }, // Cannot set .key properly without a hack
+                      ]
+                    : [
+                        { type: "keydown",  key: "\uD83E\uDD14", code: "", keyCode: 0, charCode: 0 },
+                        { type: "keypress", key: "\uD83E\uDD14", code: "", keyCode: 0, charCode: 0xD83E },
+                        { type: "keypress", key: "",             code: "", keyCode: 0, charCode: 0xDD14 },
+                        { type: "keyup",    key: "",             code: "", keyCode: 0, charCode: 0 }, // Cannot set .key properly without a hack
+                      ]
+                  )
+                : [
+                    { type: "keydown",  key: "\uD83E\uDD14", code: "", keyCode: 0, charCode: 0 },
+                    { type: "keypress", key: "\uD83E\uDD14", code: "", keyCode: 0, charCode: 0x1F914 },
+                    { type: "keyup",    key: "",             code: "", keyCode: 0, charCode: 0 }, // Cannot set .key properly without a hack
+                  ]
+            ),
+            `test_send_input(${
+              settingDescription
+            }): Inputting surrogate pair should cause one set of keydown and keyup events ${
+              aTestPerSurrogateKeyPress ? "2 keypress events" : "a keypress event"
+            }`
+          );
+        })();
+      }
+
+      await runTests(true, true);
+      await runTests(true, false);
+      await runTests(false);
+
+      window.removeEventListener("keydown", onKey);
+      window.removeEventListener("keypress", onKey);
+      window.removeEventListener("keyup", onKey);
+
+      SimpleTest.finish();
+    });
+  ]]></script>
+
+</window>
diff --git a/widget/tests/test_system_font_changes.xhtml b/widget/tests/test_system_font_changes.xhtml
new file mode 100644
index 0000000000..036c775463
--- /dev/null
+++ b/widget/tests/test_system_font_changes.xhtml
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Native menu system tests"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+window.openDialog("system_font_changes.xhtml", "system_font_changes_window",
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/test_system_status_bar.xhtml b/widget/tests/test_system_status_bar.xhtml
new file mode 100644
index 0000000000..f2348fa6f5
--- /dev/null
+++ b/widget/tests/test_system_status_bar.xhtml
@@ -0,0 +1,53 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Testing composition, text and query content events"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<menupopup id="menuContainer">
+  <menu id="menu1" image="data:image/svg+xml,&lt;svg%20xmlns=&quot;http://www.w3.org/2000/svg&quot;%20width=&quot;32&quot;%20height=&quot;32&quot;>&lt;circle%20cx=&quot;16&quot;%20cy=&quot;16&quot;%20r=&quot;16&quot;/>&lt;/svg>">
+    <menupopup>
+      <menuitem label="Item 1 in menu 1"/>
+      <menuitem label="Item 2 in menu 1"/>
+    </menupopup>
+  </menu>
+  <menu id="menu2" image="data:image/svg+xml,&lt;svg%20xmlns=&quot;http://www.w3.org/2000/svg&quot;%20width=&quot;32&quot;%20height=&quot;32&quot;>&lt;path%20d=&quot;M0 16 L 16 0 L 32 16 L 16 32 Z&quot;/>&lt;/svg>">
+    <menupopup>
+      <menuitem label="Item 1 in menu 2"/>
+      <menuitem label="Item 2 in menu 2"/>
+    </menupopup>
+  </menu>
+</menupopup>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+  let systemStatusBar = Cc["@mozilla.org/widget/systemstatusbar;1"].getService(Ci.nsISystemStatusBar);
+  ok(systemStatusBar, "should have got an nsISystemStatusBar instance");
+
+  let menu1 = document.getElementById("menu1");
+  let menu2 = document.getElementById("menu2");
+
+  // Add and remove the item, just to get basic leak testing coverage.
+  systemStatusBar.addItem(menu1);
+  systemStatusBar.removeItem(menu1);
+
+  // Make sure that calling addItem twice with the same element doesn't leak.
+  systemStatusBar.addItem(menu2);
+  systemStatusBar.addItem(menu2);
+  systemStatusBar.removeItem(menu2);
+
+]]>
+</script>
+</window>
diff --git a/widget/tests/test_taskbar_progress.xhtml b/widget/tests/test_taskbar_progress.xhtml
new file mode 100644
index 0000000000..f2494a27bb
--- /dev/null
+++ b/widget/tests/test_taskbar_progress.xhtml
@@ -0,0 +1,117 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Taskbar Previews Test"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+  onload="loaded();">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script class="testbody" type="application/javascript">
+  <![CDATA[
+    let TP = Ci.nsITaskbarProgress;
+    
+    function IsWin7OrHigher() {
+      try {
+        var ver = parseFloat(Services.sysinfo.getProperty("version"));
+        if (ver >= 6.1)
+          return true;
+      } catch (ex) { }
+      return false;
+    }
+
+    function winProgress() {
+      let taskbar = Cc["@mozilla.org/windows-taskbar;1"];
+      if (!taskbar) {
+        ok(false, "Taskbar service is always available");
+        return null;
+      }
+      taskbar = taskbar.getService(Ci.nsIWinTaskbar);
+
+      is(taskbar.available, IsWin7OrHigher(), "Expected availability of taskbar");
+      if (!taskbar.available)
+        return null;
+      
+      // HACK from mconnor:
+      let win = Services.wm.getMostRecentWindow("navigator:browser");
+      let docShell = win.docShell;
+
+      let progress = taskbar.getTaskbarProgress(docShell);
+      isnot(progress, null, "Progress is not null");
+
+      try {
+        taskbar.getTaskbarProgress(null);
+        ok(false, "Got progress for null docshell");
+      } catch (e) {
+        ok(true, "Cannot get progress for null docshell");
+      }
+      
+      return progress;
+    }
+    
+    function macProgress() {
+      let progress = Cc["@mozilla.org/widget/macdocksupport;1"];
+      if (!progress) {
+        ok(false, "Should have gotten Mac progress service.");
+        return null;
+      }
+      return progress.getService(TP);
+    }
+
+    SimpleTest.waitForExplicitFinish();
+
+    function loaded()
+    {
+      let isWin = /Win/.test(navigator.platform);
+      let progress = isWin ? winProgress() : macProgress();
+      if (!TP || !progress) {
+        SimpleTest.finish();
+        return;
+      }
+      
+      function shouldThrow(s,c,m) {
+        try {
+          progress.setProgressState(s,c,m);
+          return false;
+        } catch (e) {
+          return true;
+        }
+      }
+
+      function doesntThrow(s,c,m) {
+        return !shouldThrow(s,c,m);
+      }
+
+      ok(doesntThrow(TP.STATE_NO_PROGRESS, 0, 0), "No progress state can be set");
+      ok(doesntThrow(TP.STATE_INDETERMINATE, 0, 0), "Indeterminate state can be set");
+      ok(doesntThrow(TP.STATE_NORMAL, 0, 0), "Normal state can be set");
+      ok(doesntThrow(TP.STATE_ERROR, 0, 0), "Error state can be set");
+      ok(doesntThrow(TP.STATE_PAUSED, 0, 0), "Paused state can be set");
+
+      ok(shouldThrow(TP.STATE_NO_PROGRESS, 1, 1), "Cannot set no progress with values");
+      ok(shouldThrow(TP.STATE_INDETERMINATE, 1, 1), "Cannot set indeterminate with values");
+
+      // Technically passes since unsigned(-1) > 10
+      ok(shouldThrow(TP.STATE_NORMAL, -1, 10), "Cannot set negative progress");
+      todo(shouldThrow(TP.STATE_NORMAL, 1, -1), "Cannot set negative progress");
+      todo(shouldThrow(TP.STATE_NORMAL, -1, -1), "Cannot set negative progress");
+      todo(shouldThrow(TP.STATE_NORMAL, -2, -1), "Cannot set negative progress");
+
+      ok(shouldThrow(TP.STATE_NORMAL, 5, 3), "Cannot set progress greater than max");
+
+      ok(doesntThrow(TP.STATE_NORMAL, 1, 5), "Normal state can be set with values");
+      ok(doesntThrow(TP.STATE_ERROR, 3, 6), "Error state can be set with values");
+      ok(doesntThrow(TP.STATE_PAUSED, 2, 9), "Paused state can be set with values");
+
+      SimpleTest.finish();
+    }
+  ]]>
+  </script>
+
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+
+</window>
diff --git a/widget/tests/test_textScaleFactor_system_font.html b/widget/tests/test_textScaleFactor_system_font.html
new file mode 100644
index 0000000000..2d0333e5fa
--- /dev/null
+++ b/widget/tests/test_textScaleFactor_system_font.html
@@ -0,0 +1,139 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Test that system font sizing is independent from ui.textScaleFactor</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+  <style>
+    p { width: max-content }
+    #menu { font: menu }
+  </style>
+</head>
+<body>
+  <p id="menu">"menu" text.</p>
+  <p id="default">Default text.</p>
+</body>
+<script>
+"use strict";
+
+const { AppConstants } = SpecialPowers.ChromeUtils.importESModule(
+  "resource://gre/modules/AppConstants.sys.mjs"
+);
+
+// Returns a Number for the font size in CSS pixels.
+function elementFontSize(element) {
+  return parseFloat(getComputedStyle(element).getPropertyValue("font-size"));
+}
+
+// "look-and-feel-changed" may be dispatched twice: once for the pref
+// change and once after receiving the new values from
+// ContentChild::RecvThemeChanged().
+// pushPrefEnv() resolves after the former. This resolves after the latter.
+function promiseNewFontSizeOnThemeChange(element) {
+  return new Promise(resolve => {
+    const lastSize = elementFontSize(element);
+
+    function ThemeChanged() {
+      const size = elementFontSize(element);
+      if (size != lastSize) {
+        resolve(size);
+      }
+    }
+    // "look-and-feel-changed" is dispatched before the style system is flushed,
+    // https://searchfox.org/mozilla-central/rev/380fc5571b039fd453b45bbb64ed13146fe9b066/layout/base/nsPresContext.cpp#1684,1703-1705
+    // so use an async observer to get a notification after style changes.
+    SpecialPowers.addAsyncObserver(ThemeChanged, "look-and-feel-changed");
+    SimpleTest.registerCleanupFunction(function() {
+      SpecialPowers.removeAsyncObserver(ThemeChanged, "look-and-feel-changed");
+    });
+  });
+}
+
+function fuzzyCompareLength(actual, expected, message, tolerance, expectFn) {
+  expectFn(Math.abs(actual-expected) <= tolerance,
+           `${message} - got ${actual}, expected ${expected} +/- ${tolerance}`);
+}
+
+add_task(async () => {
+  // MOZ_HEADLESS is set in content processes with GTK regardless of the
+  // headless state of the parent process.  Check the parent state.
+  const headless = await SpecialPowers.spawnChrome([], function get_headless() {
+    return Services.env.get("MOZ_HEADLESS");
+  });
+  // LookAndFeel::TextScaleFactor::FloatID is implemented only for WINNT and
+  // GTK.  ui.textScaleFactor happens to scale CSS pixels on other platforms
+  // but system font integration has not been implemented.
+  const expectSuccess = AppConstants.MOZ_WIDGET_TOOLKIT == "windows" ||
+         (AppConstants.MOZ_WIDGET_TOOLKIT == "gtk" &&
+          // Headless GTK doesn't get system font sizes from the system, but
+          // uses sizes fixed in CSS pixels.
+          !headless);
+
+  async function setScaleAndPromiseFontSize(scale, element) {
+    const prefPromise = SpecialPowers.pushPrefEnv({
+      set: [["ui.textScaleFactor", scale]],
+    });
+    if (!expectSuccess) {
+      // The size is not expected to change but get it afresh to check our
+      // assumption.
+      await prefPromise;
+      return elementFontSize(element);
+    }
+    const [size] = await Promise.all([
+      promiseNewFontSizeOnThemeChange(element),
+      prefPromise,
+    ]);
+    return size;
+  }
+
+  const menu = document.getElementById("menu");
+  const def = document.getElementById("default");
+  // Choose a scaleFactor value different enough from possible default values
+  // that app unit rounding does not prevent a change in devicePixelRatio.
+  // A scaleFactor of 120 also has no rounding of app units per dev pixel.
+  const referenceScale = 120;
+  const menuSize1 = await setScaleAndPromiseFontSize(referenceScale, menu);
+  const menuRect1 = menu.getBoundingClientRect();
+  const defSize1 = elementFontSize(def);
+  const defRect1 = def.getBoundingClientRect();
+
+  const expectFn = expectSuccess ? ok : todo;
+  const menuSize2 = await setScaleAndPromiseFontSize(2*referenceScale, menu);
+  {
+    const singlePrecisionULP = Math.pow(2, -23);
+    // Precision seems to be lost in the conversion to decimal string for the
+    // property value.
+    const reltolerance = 30 * singlePrecisionULP;
+    fuzzyCompareLength(menuSize2, menuSize1/2, "size of menu font",
+                       reltolerance*menuSize1/2, expectFn);
+  }
+  {
+    const menuRect2 = menu.getBoundingClientRect();
+    // The menu font text renders exactly the same and app-unit rects are
+    // equal, but the DOMRect conversion is rounded to 1/65536 CSS pixels.
+    // https://searchfox.org/mozilla-central/rev/380fc5571b039fd453b45bbb64ed13146fe9b066/dom/base/DOMRect.cpp#151-159
+    // See also https://bugzilla.mozilla.org/show_bug.cgi?id=1640441#c28
+    const absTolerance = 1/65536
+    fuzzyCompareLength(menuRect2.width, menuRect1.width/2,
+                       "width of menu font <p> in px", absTolerance, expectFn);
+    fuzzyCompareLength(menuRect2.height, menuRect1.height/2,
+                       "height of menu font <p> in px", absTolerance, expectFn);
+  }
+
+  const defSize2 = elementFontSize(def);
+  is(defSize2, defSize1, "size of default font");
+  {
+    const defRect2 = def.getBoundingClientRect();
+    // Wider tolerance for hinting and snapping
+    const relTolerance = 1/12;
+    fuzzyCompareLength(defRect2.width, defRect1.width,
+                       "width of default font <p> in px",
+                       relTolerance*defRect1.width, ok);
+    fuzzyCompareLength(defRect2.height, defRect1.height,
+                       "height of default font <p> in px",
+                       relTolerance*defRect1.height, ok);
+  }
+});
+</script>
+</html>
diff --git a/widget/tests/test_transferable_overflow.xhtml b/widget/tests/test_transferable_overflow.xhtml
new file mode 100644
index 0000000000..dca9edcc61
--- /dev/null
+++ b/widget/tests/test_transferable_overflow.xhtml
@@ -0,0 +1,155 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/css" href="chrome://global/skin"?>
+<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?>
+<window title="nsTransferable with large string"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        onload="RunTest();">
+  <title>nsTransferable with large string</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <script type="application/javascript">
+  <![CDATA[
+  // This value is chosen such that the size of the memory for the string exceeds
+  // the kLargeDatasetSize threshold in nsTransferable.h (one million).
+  // Each character of a JS string is internally represented by two bytes,
+  // so the following string of length 500 001 uses 1 000 002 bytes.
+  const BIG_STRING = "x" + "BIGGY".repeat(100000);
+
+  // Some value with a length that is exactly kLargeDatasetSize (1 000 000).
+  const SMALL_STRING = "small".repeat(100000);
+
+  const nsTransferable = Components.Constructor("@mozilla.org/widget/transferable;1", "nsITransferable");
+  const nsSupportsString = Components.Constructor("@mozilla.org/supports-string;1", "nsISupportsString");
+
+  function assignTextToTransferable(transferable, string) {
+    var Suppstr = nsSupportsString();
+    Suppstr.data = string;
+    transferable.setTransferData("text/plain", Suppstr);
+  }
+
+  function checkTransferableText(transferable, expectedString, description) {
+    var data = {};
+    transferable.getTransferData("text/plain", data);
+    var actualValue = data.value.QueryInterface(Ci.nsISupportsString).data;
+    // Use ok + shortenString instead of is(...) to avoid dumping millions of characters in the output.
+    ok(actualValue === expectedString, description + ": text should match. " +
+       "Expected " + shortenString(expectedString)  + ", got " + shortenString(actualValue));
+
+    function shortenString(str) {
+      return str && str.length > 30 ? str.slice(0, 10) + "..." + str.slice(-10) : String(str);
+    }
+  }
+
+  function isFDCountingSupported() {
+    // On on-Windows we can count the number of file handles for the current process,
+    // while on Windows we need to count the number of files in ${TempD}\mozilla-temp-files\,
+    // which can be unreliable, especially because nsAnonymousTemporaryFile has documented
+    // that the deletion might not be immediate.
+    //
+    // To avoid intermittents, we only check the file descriptor counts on non-Windows.
+    // test_bug1123480.xhtml will do some basic testing for Windows.
+    const {AppConstants} = ChromeUtils.importESModule(
+      "resource://gre/modules/AppConstants.sys.mjs"
+    );
+    return AppConstants.platform !== 'win';
+  }
+
+  function getClipboardCacheFDCount() {
+    var dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
+    dir.initWithPath("/dev/fd");
+    var count = 0;
+    for (var de = dir.directoryEntries; de.hasMoreElements(); ) {
+      var fdFile = de.nextFile;
+      var fileSize;
+      try {
+        fileSize = fdFile.fileSize;
+      } catch (e) {
+        // This can happen on macOS.
+        continue;
+      }
+      if (fileSize === BIG_STRING.length * 2 ||
+          // We are not expecting files of this small size,
+          // but include them in the count anyway
+          // in case the files are unexpectedly created.
+          fileSize === SMALL_STRING.length * 2) {
+        // Assume that the file was created by us if the size matches.
+        ++count;
+      }
+    }
+    return count;
+  }
+
+  function RunTest() {
+    const {PrivateBrowsingUtils} = ChromeUtils.importESModule(
+      "resource://gre/modules/PrivateBrowsingUtils.sys.mjs"
+    );
+
+    var win = window.browsingContext.topChromeWindow.open("about:blank", "_blank", "chrome, width=500, height=200");
+    ok(win, "should open window");
+    is(PrivateBrowsingUtils.isContentWindowPrivate(win), false, "used correct window context");
+
+    // ### Part 1 - Writing to the clipboard.
+
+    var Loadctx = PrivateBrowsingUtils.privacyContextFromWindow(win);
+    var Transfer = nsTransferable();
+    Transfer.init(Loadctx);
+    Transfer.addDataFlavor("text/plain");
+    var initialFdCount = isFDCountingSupported() ? getClipboardCacheFDCount() : -1;
+
+    assignTextToTransferable(Transfer, BIG_STRING);
+    checkTransferableText(Transfer, BIG_STRING, "transferable after assigning BIG_STRING");
+    if (isFDCountingSupported()) {
+      is(getClipboardCacheFDCount(), initialFdCount + 1, "should use a file for BIG_STRING");
+    }
+
+    // Share the transferable with the system.
+    Services.clipboard.setData(Transfer, null, Services.clipboard.kGlobalClipboard);
+
+    // Sanity check: Copying to the clipboard should not have altered the transferable.
+    checkTransferableText(Transfer, BIG_STRING, "transferable after copying to clipboard");
+    if (isFDCountingSupported()) {
+      // We are only counting file descriptors for the current process,
+      // so even if the test were to be multi-process and the parent process creates another
+      // nsTransferable, then the count should still be the same.
+      is(getClipboardCacheFDCount(), initialFdCount + 1, "should still be using files for previously stored BIG_STRING");
+
+      // Re-establish baseline for the second part of the test below.
+      initialFdCount = getClipboardCacheFDCount();
+    }
+
+    // ### Part 2 - Reading from the clipboard.
+
+    var Transfer2 = nsTransferable();
+    Transfer2.init(Loadctx);
+    Transfer2.addDataFlavor("text/plain");
+
+    // Iniitalize with a small string, so we can see that mData -> mCacheFD works.
+    assignTextToTransferable(Transfer2, SMALL_STRING);
+    checkTransferableText(Transfer2, SMALL_STRING, "transferable after assigning SMALL_STRING");
+    if (isFDCountingSupported()) {
+      is(getClipboardCacheFDCount(), initialFdCount, "should not use file to store SMALL_STRING.");
+    }
+
+    // Check whether the clipboard data can be read, and simulatenously trigger mData -> mCacheFD.
+    Services.clipboard.getData(Transfer2, Services.clipboard.kGlobalClipboard, SpecialPowers.wrap(window).browsingContext.currentWindowContext);
+    checkTransferableText(Transfer2, BIG_STRING, "transferable after retrieving from clipboard");
+    if (isFDCountingSupported()) {
+      is(getClipboardCacheFDCount(), initialFdCount + 1, "should use a file for BIG_STRING (read from clipboard).");
+    }
+
+    // Store a small string, to exercise the code path from mCacheFD -> mData.
+    assignTextToTransferable(Transfer2, SMALL_STRING);
+    checkTransferableText(Transfer2, SMALL_STRING, "transferable after assigning SMALL_STRING");
+    if (isFDCountingSupported()) {
+      is(getClipboardCacheFDCount(), initialFdCount, "should release the file after clearing the transferable.");
+    }
+  }
+  ]]>
+  </script>
+
+  <!-- test results are displayed in the html:body -->
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    This test checks whether a big string can be copied to the clipboard, and then retrieved in the same form.
+    On non-Windows, the test also checks whether the data of the transferable is really stored in a file.
+  </body>
+</window>
diff --git a/widget/tests/test_wheeltransaction.xhtml b/widget/tests/test_wheeltransaction.xhtml
new file mode 100644
index 0000000000..23e855c39b
--- /dev/null
+++ b/widget/tests/test_wheeltransaction.xhtml
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Wheel scroll transaction tests"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+window.openDialog("window_wheeltransaction.xhtml", "_blank", 
+                  "chrome,width=600,height=600,noopener", window);
+
+]]>
+</script>
+</window>
diff --git a/widget/tests/unit/test_macsharingservice.js b/widget/tests/unit/test_macsharingservice.js
new file mode 100644
index 0000000000..f6b0a8e3fc
--- /dev/null
+++ b/widget/tests/unit/test_macsharingservice.js
@@ -0,0 +1,61 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Basic tests to verify that MacSharingService returns expected data
+
+function test_getSharingProviders() {
+  let sharingService = Cc["@mozilla.org/widget/macsharingservice;1"].getService(
+    Ci.nsIMacSharingService
+  );
+
+  // Ensure these URL's are accepted without error by the getSharingProviders()
+  // method. This does not test if the URL's are interpreted correctly by
+  // the platform implementation and does not test that the URL will be
+  // successfully shared to the target application if the shareURL method is
+  // used. It does indicate the Mac API's used to get the sharing providers
+  // successfully created a URL object for the URL provided and returned at
+  // least one provider.
+  let urls = [
+    "http://example.org",
+    "http://example.org/#",
+    "http://example.org/dkl??",
+    "http://example.org/dkl?a=b;c=d#thisisaref",
+    "http://example.org/dkl?a=b;c=d#thisisaref#double",
+    "http://example.org/#/",
+    "http://example.org/#/#",
+    "http://example.org/#/#/",
+    // This test fails due to the '|' in the path which needs additional
+    // encoding before conversion to NSURL. See bug 1740565.
+    // "http://example.org/foo/bar/x|page.html#this_is_a_fragment",
+    "http://example.org/page.html#this_is_a_fragment",
+    "http://example.org/page.html#this_is_a_fragment#and_another",
+    "http://example.org/foo/bar;#foo",
+    "http://example.org/a file with spaces.html",
+    "https://chat.mozilla.org/#/room/#macdev:mozilla.org",
+    "https://chat.mozilla.org/#/room/%23macdev:mozilla.org",
+  ];
+
+  urls.forEach(url => testGetSharingProvidersForUrl(sharingService, url));
+}
+
+function testGetSharingProvidersForUrl(sharingService, url) {
+  let providers = sharingService.getSharingProviders(url);
+  Assert.greater(providers.length, 1, "There are providers returned");
+  providers.forEach(provider => {
+    Assert.ok("name" in provider, "Provider has name");
+    Assert.ok("menuItemTitle" in provider, "Provider has menuItemTitle");
+    Assert.ok("image" in provider, "Provider has image");
+
+    Assert.notEqual(
+      provider.title,
+      "Mail",
+      "Known filtered provider not returned"
+    );
+  });
+}
+
+function run_test() {
+  test_getSharingProviders();
+}
diff --git a/widget/tests/unit/test_macwebapputils.js b/widget/tests/unit/test_macwebapputils.js
new file mode 100644
index 0000000000..8967f8a593
--- /dev/null
+++ b/widget/tests/unit/test_macwebapputils.js
@@ -0,0 +1,34 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Basic tests to verify that MacWebAppUtils works
+
+function test_find_app() {
+  var mwaUtils = Cc["@mozilla.org/widget/mac-web-app-utils;1"].createInstance(
+    Ci.nsIMacWebAppUtils
+  );
+  let sig = "com.apple.TextEdit";
+
+  let path;
+  path = mwaUtils.pathForAppWithIdentifier(sig);
+  info("TextEdit path: " + path + "\n");
+  Assert.notEqual(path, "");
+}
+
+function test_dont_find_fake_app() {
+  var mwaUtils = Cc["@mozilla.org/widget/mac-web-app-utils;1"].createInstance(
+    Ci.nsIMacWebAppUtils
+  );
+  let sig = "calliope.penitentiary.dramamine";
+
+  let path;
+  path = mwaUtils.pathForAppWithIdentifier(sig);
+  Assert.equal(path, "");
+}
+
+function run_test() {
+  test_find_app();
+  test_dont_find_fake_app();
+}
diff --git a/widget/tests/unit/test_taskbar_legacyjumplistitems.js b/widget/tests/unit/test_taskbar_legacyjumplistitems.js
new file mode 100644
index 0000000000..e0173fd29e
--- /dev/null
+++ b/widget/tests/unit/test_taskbar_legacyjumplistitems.js
@@ -0,0 +1,229 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This tests taskbar jump list functionality available on win7 and up.
+
+function test_basics() {
+  var item = Cc["@mozilla.org/windows-legacyjumplistitem;1"].createInstance(
+    Ci.nsILegacyJumpListItem
+  );
+
+  var sep = Cc["@mozilla.org/windows-legacyjumplistseparator;1"].createInstance(
+    Ci.nsILegacyJumpListSeparator
+  );
+
+  var shortcut = Cc[
+    "@mozilla.org/windows-legacyjumplistshortcut;1"
+  ].createInstance(Ci.nsILegacyJumpListShortcut);
+
+  var link = Cc["@mozilla.org/windows-legacyjumplistlink;1"].createInstance(
+    Ci.nsILegacyJumpListLink
+  );
+
+  Assert.ok(!item.equals(sep));
+  Assert.ok(!item.equals(shortcut));
+  Assert.ok(!item.equals(link));
+
+  Assert.ok(!sep.equals(item));
+  Assert.ok(!sep.equals(shortcut));
+  Assert.ok(!sep.equals(link));
+
+  Assert.ok(!shortcut.equals(item));
+  Assert.ok(!shortcut.equals(sep));
+  Assert.ok(!shortcut.equals(link));
+
+  Assert.ok(!link.equals(item));
+  Assert.ok(!link.equals(sep));
+  Assert.ok(!link.equals(shortcut));
+
+  Assert.ok(item.equals(item));
+  Assert.ok(sep.equals(sep));
+  Assert.ok(link.equals(link));
+  Assert.ok(shortcut.equals(shortcut));
+}
+
+function test_separator() {
+  // separators:
+
+  var item = Cc[
+    "@mozilla.org/windows-legacyjumplistseparator;1"
+  ].createInstance(Ci.nsILegacyJumpListSeparator);
+
+  Assert.ok(item.type == Ci.nsILegacyJumpListItem.JUMPLIST_ITEM_SEPARATOR);
+}
+
+function test_links() {
+  // links:
+  var link1 = Cc["@mozilla.org/windows-legacyjumplistlink;1"].createInstance(
+    Ci.nsILegacyJumpListLink
+  );
+  var link2 = Cc["@mozilla.org/windows-legacyjumplistlink;1"].createInstance(
+    Ci.nsILegacyJumpListLink
+  );
+
+  var uri1 = Cc["@mozilla.org/network/simple-uri-mutator;1"]
+    .createInstance(Ci.nsIURIMutator)
+    .setSpec("http://www.test.com/")
+    .finalize();
+  var uri2 = Cc["@mozilla.org/network/simple-uri-mutator;1"]
+    .createInstance(Ci.nsIURIMutator)
+    .setSpec("http://www.test.com/")
+    .finalize();
+
+  link1.uri = uri1;
+  link1.uriTitle = "Test";
+  link2.uri = uri2;
+  link2.uriTitle = "Test";
+
+  Assert.ok(link1.equals(link2));
+
+  link2.uriTitle = "Testing";
+
+  Assert.ok(!link1.equals(link2));
+
+  link2.uriTitle = "Test";
+  uri2 = uri2.mutate().setSpec("http://www.testing.com/").finalize();
+  link2.uri = uri2;
+
+  Assert.ok(!link1.equals(link2));
+}
+
+function test_shortcuts() {
+  // shortcuts:
+  var sc = Cc["@mozilla.org/windows-legacyjumplistshortcut;1"].createInstance(
+    Ci.nsILegacyJumpListShortcut
+  );
+
+  var handlerApp = Cc[
+    "@mozilla.org/uriloader/local-handler-app;1"
+  ].createInstance(Ci.nsILocalHandlerApp);
+
+  handlerApp.name = "TestApp";
+  handlerApp.detailedDescription = "TestApp detailed description.";
+  handlerApp.appendParameter("-test");
+
+  sc.iconIndex = 1;
+  Assert.equal(sc.iconIndex, 1);
+
+  var faviconPageUri = Cc["@mozilla.org/network/simple-uri-mutator;1"]
+    .createInstance(Ci.nsIURIMutator)
+    .setSpec("http://www.123.com/")
+    .finalize();
+  sc.faviconPageUri = faviconPageUri;
+  Assert.equal(sc.faviconPageUri, faviconPageUri);
+
+  var notepad = Services.dirsvc.get("WinD", Ci.nsIFile);
+  notepad.append("notepad.exe");
+  if (notepad.exists()) {
+    handlerApp.executable = notepad;
+    sc.app = handlerApp;
+    Assert.equal(sc.app.detailedDescription, "TestApp detailed description.");
+    Assert.equal(sc.app.name, "TestApp");
+    Assert.ok(sc.app.parameterExists("-test"));
+    Assert.ok(!sc.app.parameterExists("-notset"));
+  }
+}
+
+async function test_legacyjumplist() {
+  // Jump lists can't register links unless the application is the default
+  // protocol handler for the protocol of the link, so we skip off testing
+  // those in these tests. We'll init the jump list for the xpc shell harness,
+  // add a task item, and commit it.
+
+  // not compiled in
+  if (Ci.nsIWinTaskbar == null) {
+    return;
+  }
+
+  var taskbar = Cc["@mozilla.org/windows-taskbar;1"].getService(
+    Ci.nsIWinTaskbar
+  );
+
+  // Since we're only testing the general functionality of the JumpListBuilder
+  // et. al, we can just test the non-private browsing version.
+  // (The only difference between the two at this level is the App User Model ID.)
+  var builder = taskbar.createLegacyJumpListBuilder(false);
+
+  Assert.notEqual(builder, null);
+
+  // Win7 and up only
+  try {
+    var ver = parseFloat(Services.sysinfo.getProperty("version"));
+    if (ver < 6.1) {
+      Assert.ok(!builder.available);
+      return;
+    }
+  } catch (ex) {}
+
+  Assert.ok(taskbar.available);
+
+  builder.deleteActiveList();
+
+  var items = Cc["@mozilla.org/array;1"].createInstance(Ci.nsIMutableArray);
+
+  var sc = Cc["@mozilla.org/windows-legacyjumplistshortcut;1"].createInstance(
+    Ci.nsILegacyJumpListShortcut
+  );
+
+  var handlerApp = Cc[
+    "@mozilla.org/uriloader/local-handler-app;1"
+  ].createInstance(Ci.nsILocalHandlerApp);
+
+  handlerApp.name = "Notepad";
+  handlerApp.detailedDescription = "Testing detailed description.";
+
+  var notepad = Services.dirsvc.get("WinD", Ci.nsIFile);
+  notepad.append("notepad.exe");
+  if (notepad.exists()) {
+    // To ensure "profile-before-change" will fire before
+    // "xpcom-shutdown-threads"
+    do_get_profile();
+
+    handlerApp.executable = notepad;
+    sc.app = handlerApp;
+    items.appendElement(sc);
+
+    var removed = Cc["@mozilla.org/array;1"].createInstance(Ci.nsIMutableArray);
+    Assert.ok(builder.initListBuild(removed));
+    Assert.ok(builder.addListToBuild(builder.JUMPLIST_CATEGORY_TASKS, items));
+    Assert.ok(builder.addListToBuild(builder.JUMPLIST_CATEGORY_RECENT));
+    Assert.ok(builder.addListToBuild(builder.JUMPLIST_CATEGORY_FREQUENT));
+    let rv = new Promise(resolve => {
+      builder.commitListBuild(resolve);
+    });
+    Assert.ok(await rv);
+
+    builder.deleteActiveList();
+
+    Assert.ok(builder.initListBuild(removed));
+    Assert.ok(
+      builder.addListToBuild(
+        builder.JUMPLIST_CATEGORY_CUSTOMLIST,
+        items,
+        "Custom List"
+      )
+    );
+    rv = new Promise(resolve => {
+      builder.commitListBuild(resolve);
+    });
+    Assert.ok(await rv);
+
+    builder.deleteActiveList();
+  }
+}
+
+function run_test() {
+  if (mozinfo.os != "win") {
+    return;
+  }
+  test_basics();
+  test_separator();
+  test_links();
+  test_shortcuts();
+
+  run_next_test();
+}
+
+add_task(test_legacyjumplist);
diff --git a/widget/tests/unit/xpcshell.toml b/widget/tests/unit/xpcshell.toml
new file mode 100644
index 0000000000..4e702ca356
--- /dev/null
+++ b/widget/tests/unit/xpcshell.toml
@@ -0,0 +1,11 @@
+[DEFAULT]
+head = ""
+
+["test_macsharingservice.js"]
+run-if = ["os == 'mac'"]
+
+["test_macwebapputils.js"]
+run-if = ["os == 'mac'"]
+
+["test_taskbar_legacyjumplistitems.js"]
+skip-if = ["os == 'win'"]
diff --git a/widget/tests/window_bug429954.xhtml b/widget/tests/window_bug429954.xhtml
new file mode 100644
index 0000000000..ca26d52621
--- /dev/null
+++ b/widget/tests/window_bug429954.xhtml
@@ -0,0 +1,44 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Mozilla Bug 478536"
+  onload="start();"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<body xmlns="http://www.w3.org/1999/xhtml" id="body">
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+function ok(aCondition, aMessage)
+{
+  window.browsingContext.topChromeWindow.opener.wrappedJSObject.SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function isnot(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.isnot(aLeft, aRight, aMessage);
+}
+
+function start() {
+  var oldWidth = window.outerWidth, oldHeight = window.outerHeight;
+  window.maximize();
+  window.restore();
+  is(window.outerWidth, oldWidth, "wrong window width after maximize+restore");
+  is(window.outerHeight, oldHeight, "wrong window height after maximize+restore");
+  window.arguments[0].SimpleTest.finish();
+  window.close();
+}
+
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/window_bug478536.xhtml b/widget/tests/window_bug478536.xhtml
new file mode 100644
index 0000000000..7318eb0bff
--- /dev/null
+++ b/widget/tests/window_bug478536.xhtml
@@ -0,0 +1,211 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Mozilla Bug 478536"
+  width="600" height="600"
+  onload="onload();"
+  onunload="onunload();"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/paint_listener.js" />
+
+<body xmlns="http://www.w3.org/1999/xhtml" id="body">
+<style type="text/css">
+  #view {
+    overflow: auto;
+    width: 100px;
+    height: 100px;
+    border: 1px solid;
+    margin: 0;
+  }
+</style>
+<pre id="view" onscroll="onScrollView(event);">
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+function ok(aCondition, aMessage)
+{
+  window.arguments[0].SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function isnot(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.isnot(aLeft, aRight, aMessage);
+}
+
+var gBody = document.getElementById("body");
+var gView = document.getElementById("view");
+
+/**
+ * Description:
+ *
+ *   First, lock the wheel scrolling target to "view" at first step.
+ *   Next, scroll back to top most of the "view" at second step.
+ *   Finally, scroll back again at third step.  This fails to scroll the "view",
+ *   then, |onMouseScrollFailed| event should be fired.  And at that time, we
+ *   can remove the "view".  So, in post processing of the event firere, the
+ *   "view" should not be referred.
+ *
+ *   For suppressing random test failure, all tests will be retried if we handle
+ *   unexpected timeout event.
+ */
+
+var gTests = [
+ { scrollToForward: true,  shouldScroll: true },
+ { scrollToForward: false, shouldScroll: true },
+ { scrollToForward: false, shouldScroll: false }
+];
+var gCurrentTestIndex = -1;
+var gIgnoreScrollEvent = true;
+
+var gPrefSvc = SpecialPowers.Services.prefs;
+const kPrefSmoothScroll = "general.smoothScroll";
+const kPrefNameTimeout = "mousewheel.transaction.timeout";
+const kDefaultTimeout = gPrefSvc.getIntPref(kPrefNameTimeout);
+
+gPrefSvc.setBoolPref(kPrefSmoothScroll, false);
+
+var gTimeout = kDefaultTimeout;
+
+gBody.addEventListener("MozMouseScrollFailed", onMouseScrollFailed);
+gBody.addEventListener("MozMouseScrollTransactionTimeout",
+                       onTransactionTimeout);
+
+function setTimeoutPrefs(aTimeout)
+{
+  gPrefSvc.setIntPref(kPrefNameTimeout, aTimeout);
+  gTimeout = aTimeout;
+}
+
+function resetTimeoutPrefs()
+{
+  if (gTimeout == kDefaultTimeout)
+    return;
+  setTimeoutPrefs(kDefaultTimeout);
+}
+
+function growUpTimeoutPrefs()
+{
+  if (gTimeout != kDefaultTimeout)
+    return;
+  setTimeoutPrefs(5000);
+}
+
+function onload()
+{
+  disableNonTestMouseEvents(true);
+  setTimeout(runNextTest, 0);
+}
+
+function onunload()
+{
+  resetTimeoutPrefs();
+  disableNonTestMouseEvents(false);
+  gPrefSvc.clearUserPref(kPrefSmoothScroll);
+  SpecialPowers.DOMWindowUtils.restoreNormalRefresh();
+  window.arguments[0].SimpleTest.finish();
+}
+
+function finish()
+{
+  window.close();
+}
+
+// testing code
+
+var gTimer;
+function clearTimer()
+{
+  clearTimeout(gTimer);
+  gTimer = 0;
+}
+
+function runNextTest()
+{
+  clearTimer();
+  if (++gCurrentTestIndex >= gTests.length) {
+    ok(true, "didn't crash, succeeded");
+    finish();
+    return;
+  }
+  fireWheelScrollEvent(gTests[gCurrentTestIndex].scrollToForward);
+}
+
+var gRetryCount = 5;
+function retryAllTests()
+{
+  clearTimer();
+  if (--gRetryCount >= 0) {
+    gView.scrollTop = 0;
+    gView.scrollLeft = 0;
+    gCurrentTestIndex = -1;
+    growUpTimeoutPrefs();
+    ok(true, "WARNING: retry current test-list...");
+    gTimer = setTimeout(runNextTest, 0);
+  } else {
+    ok(false, "Failed by unexpected timeout");
+    finish();
+  }
+}
+
+function fireWheelScrollEvent(aForward)
+{
+  gIgnoreScrollEvent = false;
+  var event = { deltaY: aForward ? 4.0 : -4.0,
+                deltaMode: WheelEvent.DOM_DELTA_LINE };
+  sendWheelAndPaint(gView, 5, 5, event, function() {
+    // No callback - we're just forcing the refresh driver to tick.
+  }, window);
+}
+
+function onScrollView(aEvent)
+{
+  if (gIgnoreScrollEvent)
+    return;
+  gIgnoreScrollEvent = true;
+  clearTimer();
+  ok(gTests[gCurrentTestIndex].shouldScroll, "The view is scrolled");
+  gTimer = setTimeout(runNextTest, 0);
+}
+
+function onMouseScrollFailed(aEvent)
+{
+  clearTimer();
+  gIgnoreScrollEvent = true;
+  ok(!gTests[gCurrentTestIndex].shouldScroll, "The view is not scrolled");
+  if (!gTests[gCurrentTestIndex].shouldScroll)
+    gBody.removeChild(gView);
+  runNextTest();
+}
+
+function onTransactionTimeout(aEvent)
+{
+  if (!gTimer)
+    return;
+  gIgnoreScrollEvent = true;
+  retryAllTests();
+}
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/window_bug522217.xhtml b/widget/tests/window_bug522217.xhtml
new file mode 100644
index 0000000000..80eb4b6e5a
--- /dev/null
+++ b/widget/tests/window_bug522217.xhtml
@@ -0,0 +1,80 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Mozilla Bug 522217"
+  onload="start();"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<body xmlns="http://www.w3.org/1999/xhtml" id="body">
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+function ok(aCondition, aMessage)
+{
+  window.arguments[0].SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function isnot(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.isnot(aLeft, aRight, aMessage);
+}
+
+function executeSoon() {
+  return new Promise(resolve => {
+    window.arguments[0].SimpleTest.executeSoon(resolve);
+  });
+}
+
+function waitForEvent(obj, name) {
+  return new Promise(resolve => {
+    obj.addEventListener(name, resolve, { once: true });
+  });
+}
+
+async function start() {
+  await waitForEvent(window, "focus");
+  var oldOuterWidth = window.outerWidth, oldOuterHeight = window.outerHeight;
+  var oldInnerWidth = window.innerWidth, oldInnerHeight = window.innerHeight;
+  document.documentElement.setAttribute("chromemargin", "0,0,0,0");
+
+  await executeSoon();
+  is(window.outerWidth, oldOuterWidth, "chromemargin shouldn't change the window's outerWidth");
+  is(window.outerHeight, oldOuterHeight, "chromemargin shouldn't change the window's outerHeight");
+  is(window.innerWidth, oldOuterWidth, "if chromemargin is set, innerWidth and outerWidth should be the same");
+  is(window.innerHeight, oldOuterHeight, "if chromemargin is set, innerHeight and outerHeight should be the same");
+
+  // Wait for going full screen and back.
+  let sizemodeChange = waitForEvent(window, "sizemodechange");
+  window.fullScreen = true;
+  await sizemodeChange;
+  sizemodeChange = waitForEvent(window, "sizemodechange");
+  window.fullScreen = false;
+  await sizemodeChange;
+  is(window.outerWidth, oldOuterWidth, "wrong outerWidth after fullscreen mode");
+  is(window.outerHeight, oldOuterHeight, "wrong outerHeight after fullscreen mode");
+  is(window.innerWidth, oldOuterWidth, "wrong innerWidth after fullscreen mode");
+  is(window.innerHeight, oldOuterHeight, "wrong innerHeight after fullscreen mode");
+  document.documentElement.removeAttribute("chromemargin");
+
+  await executeSoon();
+  is(window.outerWidth, oldOuterWidth, "wrong outerWidth after removing chromemargin");
+  is(window.outerHeight, oldOuterHeight, "wrong outerHeight after removing chromemargin");
+  is(window.innerWidth, oldInnerWidth, "wrong innerWidth after removing chromemargin");
+  is(window.innerHeight, oldInnerHeight, "wrong innerHeight after removing chromemargin");
+  window.arguments[0].SimpleTest.finish();
+  window.close();
+}
+
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/window_bug538242.xhtml b/widget/tests/window_bug538242.xhtml
new file mode 100644
index 0000000000..fb878b1383
--- /dev/null
+++ b/widget/tests/window_bug538242.xhtml
@@ -0,0 +1,3 @@
+<?xml version="1.0"?>
+<window title="Window for Test for Mozilla Bug 538242"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"/>
diff --git a/widget/tests/window_bug593307_centerscreen.xhtml b/widget/tests/window_bug593307_centerscreen.xhtml
new file mode 100644
index 0000000000..dd73e42f84
--- /dev/null
+++ b/widget/tests/window_bug593307_centerscreen.xhtml
@@ -0,0 +1,26 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Mozilla Bug 593307"
+  width="100" height="100"
+  onload="onload();"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<body xmlns="http://www.w3.org/1999/xhtml" id="body">
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+function onload()
+{
+  var SimpleTest = window.opener.SimpleTest;
+  SimpleTest.ok(window.screenX >= 0, "centerscreen window should not start offscreen (X coordinate): " + window.screenX);
+  SimpleTest.ok(window.screenY >= 0, "centerscreen window should not start offscreen (Y coordinate): " + window.screenY);
+  window.opener.finished();
+}
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/window_bug593307_offscreen.xhtml b/widget/tests/window_bug593307_offscreen.xhtml
new file mode 100644
index 0000000000..10ab701a55
--- /dev/null
+++ b/widget/tests/window_bug593307_offscreen.xhtml
@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Mozilla Bug 593307"
+  width="100" height="100"
+  onload="onLoad();"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+
+<body xmlns="http://www.w3.org/1999/xhtml" id="body">
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+var centerscreen = null;
+var SimpleTest = window.arguments[0];
+var finish = window.arguments[1];
+
+function onLoad()
+{
+  setTimeout(() => {
+    centerscreen = window.openDialog('window_bug593307_centerscreen.xhtml','', 'chrome,centerscreen,dependent,dialog=no');
+  }, 0);
+}
+
+function finished() {
+  centerscreen.close();
+  finish();
+}
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/window_composition_text_querycontent.xhtml b/widget/tests/window_composition_text_querycontent.xhtml
new file mode 100644
index 0000000000..db3b10ea30
--- /dev/null
+++ b/widget/tests/window_composition_text_querycontent.xhtml
@@ -0,0 +1,10923 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Testing composition, text and query content events"
+  xmlns:html="http://www.w3.org/1999/xhtml"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/WindowSnapshot.js" />
+
+  <panel id="panel" hidden="true" orient="vertical">
+    <vbox id="vbox">
+      <html:textarea id="textbox" cols="20" rows="4" style="font-size: 36px;"/>
+    </vbox>
+  </panel>
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<div id="display">
+<div id="div" style="margin: 0; padding: 0; font-size: 36px;">Here is a text frame.</div>
+<textarea style="margin: 0; font-family: -moz-fixed;" id="textarea" cols="20" rows="4"></textarea><br/>
+<iframe id="iframe" width="300" height="150"
+        src="data:text/html,&lt;textarea id='textarea' cols='20' rows='4'&gt;&lt;/textarea&gt;"></iframe><br/>
+<iframe id="iframe2" width="300" height="150"
+        src="data:text/html,&lt;body onload='document.designMode=%22on%22'&gt;body content&lt;/body&gt;"></iframe><br/>
+<iframe id="iframe3" width="300" height="150"
+        src="data:text/html,&lt;body onload='document.designMode=%22on%22'&gt;body content&lt;/body&gt;"></iframe><br/>
+<iframe id="iframe4" width="300" height="150"
+        src="data:text/html,&lt;div contenteditable id='contenteditable'&gt;&lt;/div&gt;"></iframe><br/>
+<!--
+  NOTE: the width for the next two iframes is chosen to be small enough to make
+  the Show Password button (for type=password) be outside the viewport so that
+  it doesn't affect the rendering compared to the type=text control.
+  But still large enough to comfortably fit the input values we test.
+-->
+<iframe id="iframe5" style="width:10ch" height="50" src="data:text/html,&lt;input id='input'&gt;"></iframe>
+<iframe id="iframe6" style="width:10ch" height="50" src="data:text/html,&lt;input id='password' type='password'&gt;"></iframe><br/>
+<iframe id="iframe7" width="300" height="150"
+        src="data:text/html,&lt;span contenteditable id='contenteditable'&gt;&lt;/span&gt;"></iframe><br/>
+<input id="input" type="text"/><br/>
+<input id="password" type="password"/><br/>
+</div>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+function ok(aCondition, aMessage)
+{
+  window.arguments[0].SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function isnot(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.isnot(aLeft, aRight, aMessage);
+}
+
+function isfuzzy(aLeft, aRight, aEpsilon, aMessage) {
+  window.arguments[0].SimpleTest.isfuzzy(aLeft, aRight, aEpsilon, aMessage);
+}
+
+function todo(aCondition, aMessage)
+{
+  window.arguments[0].SimpleTest.todo(aCondition, aMessage);
+}
+
+function todo_is(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.todo_is(aLeft, aRight, aMessage);
+}
+
+function todo_isnot(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.todo_isnot(aLeft, aRight, aMessage);
+}
+
+function isSimilarTo(aLeft, aRight, aAllowedDifference, aMessage)
+{
+  if (Math.abs(aLeft - aRight) <= aAllowedDifference) {
+    ok(true, aMessage);
+  } else {
+    ok(false, aMessage + ", got=" + aLeft + ", expected=" + (aRight - aAllowedDifference) + "~" + (aRight + aAllowedDifference));
+  }
+}
+
+function isGreaterThan(aLeft, aRight, aMessage)
+{
+  ok(aLeft > aRight, aMessage + ", got=" + aLeft + ", expected minimum value=" + aRight);
+}
+
+/**
+ * synthesizeSimpleCompositionChange synthesizes a composition which has only
+ * one clause and put caret end of it.
+ *
+ * @param aComposition  string or object.  If string, it's treated as
+ *                      composition string whose attribute is
+ *                      COMPOSITION_ATTR_RAW_CLAUSE.
+ *                      If object, it must have .string whose type is "string".
+ *                      Additionally, .attr can be specified if you'd like to
+ *                      use the other attribute instead of
+ *                      COMPOSITION_ATTR_RAW_CLAUSE.
+ */
+function synthesizeSimpleCompositionChange(aComposition, aWindow, aCallback) {
+  const comp = (() => {
+    if (typeof aComposition == "string") {
+      return { string: aComposition, attr: COMPOSITION_ATTR_RAW_CLAUSE };
+    }
+    return {
+      string: aComposition.string,
+      attr: aComposition.attr === undefined
+        ? COMPOSITION_ATTR_RAW_CLAUSE
+        : aComposition.attr
+    };
+  })();
+  synthesizeCompositionChange(
+    {
+      composition: {
+        string: comp.string,
+        clauses: [
+          { length: comp.string.length, attr: comp.attr },
+        ],
+      },
+      caret: { start: comp.string.length, length: 0 },
+    },
+    aWindow,
+    aCallback
+  );
+}
+
+
+var div = document.getElementById("div");
+var textarea = document.getElementById("textarea");
+var panel = document.getElementById("panel");
+var textbox = document.getElementById("textbox");
+var iframe = document.getElementById("iframe");
+var iframe2 = document.getElementById("iframe2");
+var iframe3 = document.getElementById("iframe3");
+var contenteditable;
+var windowOfContenteditable;
+var contenteditableBySpan;
+var windowOfContenteditableBySpan;
+var input = document.getElementById("input");
+var password = document.getElementById("password");
+var textareaInFrame;
+
+const nsITextInputProcessorCallback = Ci.nsITextInputProcessorCallback;
+const nsIInterfaceRequestor = Ci.nsIInterfaceRequestor;
+const nsIWebNavigation = Ci.nsIWebNavigation;
+const nsIDocShell = Ci.nsIDocShell;
+const { AppConstants } = ChromeUtils.importESModule(
+  "resource://gre/modules/AppConstants.sys.mjs"
+);
+
+function waitForTick() {
+  return new Promise(resolve => { SimpleTest.executeSoon(resolve); });
+}
+
+async function waitForEventLoops(aTimes)
+{
+  for (let i = 1; i < aTimes; i++) {
+    await waitForTick();
+  }
+  await new Promise(resolve => { setTimeout(resolve, 20); });
+}
+
+function getEditor(aNode)
+{
+  return aNode.editor;
+}
+
+function getHTMLEditorIMESupport(aWindow)
+{
+  return aWindow.docShell.editor;
+}
+
+const kIsWin = (navigator.platform.indexOf("Win") == 0);
+const kIsMac = (navigator.platform.indexOf("Mac") == 0);
+
+const kLFLen = (kIsWin && false) ? 2 : 1;
+const kLF = (kIsWin && false) ? "\r\n" : "\n";
+
+function checkQueryContentResult(aResult, aMessage)
+{
+  ok(aResult, aMessage + ": the result is null");
+  if (!aResult) {
+    return false;
+  }
+  ok(aResult.succeeded, aMessage + ": the query content failed");
+  return aResult.succeeded;
+}
+
+function checkContent(aExpectedText, aMessage, aID)
+{
+  if (!aID) {
+    aID = "";
+  }
+  let textContent = synthesizeQueryTextContent(0, 100);
+  if (!checkQueryContentResult(textContent, aMessage +
+                               ": synthesizeQueryTextContent " + aID)) {
+    return false;
+  }
+  is(textContent.text, aExpectedText,
+     aMessage + ": composition string is wrong " + aID);
+  return textContent.text == aExpectedText;
+}
+
+function checkContentRelativeToSelection(aRelativeOffset, aLength, aExpectedOffset, aExpectedText, aMessage, aID)
+{
+  if (!aID) {
+    aID = "";
+  }
+  aMessage += " (aRelativeOffset=" + aRelativeOffset + "): "
+  let textContent = synthesizeQueryTextContent(aRelativeOffset, aLength, true);
+  if (!checkQueryContentResult(textContent, aMessage +
+                               "synthesizeQueryTextContent " + aID)) {
+    return false;
+  }
+  is(textContent.offset, aExpectedOffset,
+     aMessage + "offset is wrong " + aID);
+  is(textContent.text, aExpectedText,
+     aMessage + "text is wrong " + aID);
+  return textContent.offset == aExpectedOffset &&
+         textContent.text == aExpectedText;
+}
+
+function checkSelection(aExpectedOffset, aExpectedText, aMessage, aID)
+{
+  if (!aID) {
+    aID = "";
+  }
+  let selectedText = synthesizeQuerySelectedText();
+  if (!checkQueryContentResult(selectedText, aMessage +
+                               ": synthesizeQuerySelectedText " + aID)) {
+    return false;
+  }
+  if (aExpectedOffset === null) {
+    is(
+      selectedText.notFound,
+      true,
+      `${aMessage}: selection should not be found ${aID}`
+    );
+    return selectedText.notFound;
+  }
+
+  is(
+    selectedText.notFound,
+    false,
+    `${aMessage}: selection should be found ${aID}`
+  );
+  if (selectedText.notFound) {
+    return false;
+  }
+  is(
+    selectedText.offset,
+    aExpectedOffset,
+    `${aMessage}: selection offset should be ${aExpectedOffset} ${aID}`
+  );
+  is(
+    selectedText.text,
+    aExpectedText,
+    `${aMessage}: selected text should be "${aExpectedText}" ${aID}`
+  );
+  return selectedText.offset == aExpectedOffset &&
+         selectedText.text == aExpectedText;
+}
+
+function checkIMESelection(
+  aSelectionType,
+  aExpectedFound,
+  aExpectedOffset,
+  aExpectedText,
+  aMessage,
+  aID,
+  aToDo = {}
+) {
+  if (!aID) {
+    aID = "";
+  }
+  aMessage += " (" + aSelectionType + ")";
+  let {
+    notFound = is,
+    offset = is,
+    text = is,
+  } = aToDo;
+  let selectionType = 0;
+  switch (aSelectionType) {
+    case "RawClause":
+      selectionType = QUERY_CONTENT_FLAG_SELECTION_IME_RAWINPUT;
+      break;
+    case "SelectedRawClause":
+      selectionType = QUERY_CONTENT_FLAG_SELECTION_IME_SELECTEDRAWTEXT;
+      break;
+    case "ConvertedClause":
+      selectionType = QUERY_CONTENT_FLAG_SELECTION_IME_CONVERTEDTEXT;
+      break;
+    case "SelectedClause":
+      selectionType = QUERY_CONTENT_FLAG_SELECTION_IME_SELECTEDCONVERTEDTEXT;
+      break;
+    default:
+      ok(false, aMessage + ": invalid selection type, " + aSelectionType);
+  }
+  isnot(selectionType, 0, aMessage + ": wrong value");
+  let selectedText = synthesizeQuerySelectedText(selectionType);
+  if (!checkQueryContentResult(selectedText, aMessage +
+                               ": synthesizeQuerySelectedText " + aID)) {
+    return false;
+  }
+  notFound(
+    selectedText.notFound,
+    !aExpectedFound,
+    `${aMessage}: selection should ${
+      aExpectedFound ? "" : "not"
+    } be found ${aID}`);
+  if (selectedText.notFound) {
+    return selectedText.notFound == !aExpectedFound;
+  }
+
+  offset(
+    selectedText.offset,
+    aExpectedOffset,
+    `${aMessage}: selection offset is wrong ${aID}`
+  );
+  text(
+    selectedText.text,
+    aExpectedText,
+    `${aMessage}: selected text is wrong ${aID}`
+  );
+  return selectedText.offset == aExpectedOffset &&
+         selectedText.text == aExpectedText;
+}
+
+function checkRect(aRect, aExpectedRect, aMessage)
+{
+  is(aRect.left, aExpectedRect.left, aMessage + ": left is wrong");
+  is(aRect.top, aExpectedRect.top, aMessage + " top is wrong");
+  is(aRect.width, aExpectedRect.width, aMessage + ": width is wrong");
+  is(aRect.height, aExpectedRect.height, aMessage + ": height is wrong");
+  return aRect.left == aExpectedRect.left &&
+         aRect.top == aExpectedRect.top &&
+         aRect.width == aExpectedRect.width &&
+         aRect.height == aExpectedRect.height;
+}
+
+function checkRectFuzzy(aRect, aExpectedRect, aEpsilon, aMessage) {
+  isfuzzy(aRect.left, aExpectedRect.left, aEpsilon.left, aMessage + ": left is wrong");
+  isfuzzy(aRect.top, aExpectedRect.top, aEpsilon.top, aMessage + " top is wrong");
+  isfuzzy(aRect.width, aExpectedRect.width, aEpsilon.width, aMessage + ": width is wrong");
+  isfuzzy(aRect.height, aExpectedRect.height, aEpsilon.height, aMessage + ": height is wrong");
+  return (aRect.left >= aExpectedRect.left - aEpsilon.left &&
+          aRect.left <= aExpectedRect.left + aEpsilon.left) &&
+         (aRect.top >= aExpectedRect.top - aEpsilon.top &&
+          aRect.top <= aExpectedRect.top + aEpsilon.top) &&
+         (aRect.width >= aExpectedRect.width - aEpsilon.width &&
+          aRect.width <= aExpectedRect.width + aEpsilon.width) &&
+         (aRect.height >= aExpectedRect.height - aEpsilon.height &&
+          aRect.height <= aExpectedRect.height + aEpsilon.height);
+}
+
+function getRectArray(aQueryTextRectArrayResult) {
+  let rects = [];
+  for (let i = 0; ; i++) {
+    let rect = { left: {}, top: {}, width: {}, height: {} };
+    try {
+      aQueryTextRectArrayResult.getCharacterRect(i, rect.left, rect.top, rect.width, rect.height);
+    } catch (e) {
+      break;
+    }
+    rects.push({
+      left: rect.left.value,
+      top: rect.top.value,
+      width: rect.width.value,
+      height: rect.height.value,
+    });
+  }
+  return rects;
+}
+
+function checkRectArray(aQueryTextRectArrayResult, aExpectedTextRectArray, aMessage)
+{
+  for (let i = 1; i < aExpectedTextRectArray.length; ++i) {
+    let rect = { left: {}, top: {}, width: {}, height: {} };
+    try {
+      aQueryTextRectArrayResult.getCharacterRect(i, rect.left, rect.top, rect.width, rect.height);
+    } catch (e) {
+      ok(false, aMessage + ": failed to retrieve " + i + "th rect (" + e + ")");
+      return false;
+    }
+    function toRect(aRect)
+    {
+      return { left: aRect.left.value, top: aRect.top.value, width: aRect.width.value, height: aRect.height.value };
+    }
+    if (!checkRect(toRect(rect), aExpectedTextRectArray[i], aMessage + " " + i + "th rect")) {
+      return false;
+    }
+  }
+  return true;
+}
+
+function checkRectContainsRect(aRect, aContainer, aMessage)
+{
+  let container = { left: Math.ceil(aContainer.left),
+                    top:  Math.ceil(aContainer.top),
+                    width: Math.floor(aContainer.width),
+                    height: Math.floor(aContainer.height) };
+
+  let ret = container.left <= aRect.left &&
+            container.top <= aRect.top &&
+            container.left + container.width >= aRect.left + aRect.width &&
+            container.top + container.height >= aRect.top + aRect.height;
+  ret = ret && aMessage;
+  ok(ret, aMessage + " container={ left=" + container.left + ", top=" +
+     container.top + ", width=" + container.width + ", height=" +
+     container.height + " } rect={ left=" + aRect.left + ", top=" + aRect.top +
+     ", width=" + aRect.width + ", height=" + aRect.height + " }");
+  return ret;
+}
+
+// eslint-disable-next-line complexity
+function runUndoRedoTest()
+{
+  textarea.value = "";
+  textarea.focus();
+
+  // input raw characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306D",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "," },
+    });
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306D\u3053",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: "b" },
+    });
+
+  // convert
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u732B",
+        "clauses":
+        [
+          { "length": 1,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: " " },
+    });
+
+  // commit
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  // input raw characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u307E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "j" },
+    });
+
+  // cancel the composition
+  synthesizeComposition({ type: "compositioncommit", data: "", key: { key: "KEY_Escape" } });
+
+  // input raw characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3080",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "]" },
+    });
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3080\u3059",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: "r" },
+    });
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3080\u3059\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 },
+      "key": { key: "/" },
+    });
+
+  // convert
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u5A18",
+        "clauses":
+        [
+          { "length": 1,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: " " },
+    });
+
+  // commit
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  sendString(" meant");
+  synthesizeKey("KEY_Backspace");
+  synthesizeKey("s \"cat-girl\". She is a ");
+
+  // input raw characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3088",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "9" },
+    });
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3088\u3046",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: "4" },
+    });
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3088\u3046\u304b",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 },
+      "key": { key: "t" },
+    });
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3088\u3046\u304b\u3044",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 },
+      "key": { key: "e" },
+    });
+
+  // convert
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u5996\u602a",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: " " },
+    });
+
+  // commit
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "Enter" } });
+
+  synthesizeKey("KEY_Backspace", {repeat: 12});
+
+  let i = 0;
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\".",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(20, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\". She is a \u5996\u602A",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(32, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\". She is a ",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(30, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("\u732B\u5A18 mean",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(7, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("\u732B\u5A18 meant",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(8, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("\u732B\u5A18",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(2, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("\u732B",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(1, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  // XXX this is unexpected behavior, see bug 258291
+  if (!checkContent("\u732B",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(1, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(0, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true});
+
+  if (!checkContent("",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(0, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(1, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  // XXX this is unexpected behavior, see bug 258291
+  if (!checkContent("\u732B",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(1, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(2, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18 meant",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(8, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18 mean",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(7, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\". She is a ",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(30, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\". She is a \u5996\u602A",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(32, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\".",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(20, "", "runUndoRedoTest", "#" + i)) {
+    return;
+  }
+
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+
+  if (!checkContent("\u732B\u5A18 means \"cat-girl\".",
+                    "runUndoRedoTest", "#" + ++i) ||
+      !checkSelection(20, "", "runUndoRedoTest", "#" + i)) {
+    // eslint-disable-next-line no-useless-return
+    return;
+  }
+}
+
+function checkInputEvent(aEvent, aIsComposing, aInputType, aData, aTargetRanges, aDescription) {
+  if (aEvent.type !== "input" && aEvent.type !== "beforeinput") {
+    throw new Error(`${aDescription}: "${aEvent.type}" is not InputEvent`);
+  }
+  ok(InputEvent.isInstance(aEvent), `"${aEvent.type}" event should be dispatched with InputEvent interface: ${aDescription}`);
+  let cancelable = aEvent.type === "beforeinput" &&
+                   aInputType !== "insertCompositionText" &&
+                   aInputType !== "deleteCompositionText";
+  is(aEvent.cancelable, cancelable, `"${aEvent.type}" event should ${cancelable ? "be" : "be never"} cancelable: ${aDescription}`);
+  is(aEvent.bubbles, true, `"${aEvent.type}" event should always bubble: ${aDescription}`);
+  is(aEvent.isComposing, aIsComposing, `isComposing of "${aEvent.type}" event should be ${aIsComposing}: ${aDescription}`);
+  is(aEvent.inputType, aInputType, `inputType of "${aEvent.type}" event should be "${aInputType}": ${aDescription}`);
+  is(aEvent.data, aData, `data of "${aEvent.type}" event should be ${aData}: ${aDescription}`);
+  is(aEvent.dataTransfer, null, `dataTransfer of "${aEvent.type}" event should be null: ${aDescription}`);
+  let targetRanges = aEvent.getTargetRanges();
+  if (aTargetRanges.length === 0) {
+    is(targetRanges.length, 0,
+       `getTargetRange() of "${aEvent.type}" event should return empty array: ${aDescription}`);
+  } else {
+    is(targetRanges.length, aTargetRanges.length,
+       `getTargetRange() of "${aEvent.type}" event should return static range array: ${aDescription}`);
+    if (targetRanges.length == aTargetRanges.length) {
+      for (let i = 0; i < targetRanges.length; i++) {
+        is(targetRanges[i].startContainer, aTargetRanges[i].startContainer,
+           `startContainer of getTargetRanges()[${i}] of "${aEvent.type}" event does not match: ${aDescription}`);
+        is(targetRanges[i].startOffset, aTargetRanges[i].startOffset,
+           `startOffset of getTargetRanges()[${i}] of "${aEvent.type}" event does not match: ${aDescription}`);
+        is(targetRanges[i].endContainer, aTargetRanges[i].endContainer,
+           `endContainer of getTargetRanges()[${i}] of "${aEvent.type}" event does not match: ${aDescription}`);
+        is(targetRanges[i].endOffset, aTargetRanges[i].endOffset,
+           `endOffset of getTargetRanges()[${i}] of "${aEvent.type}" event does not match: ${aDescription}`);
+      }
+    }
+  }
+}
+
+function runCompositionCommitAsIsTest()
+{
+  textarea.focus();
+
+  let result = [];
+  function clearResult()
+  {
+    result = [];
+  }
+
+  function handler(aEvent)
+  {
+    result.push(aEvent);
+  }
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+  textarea.addEventListener("beforeinput", handler, true);
+  textarea.addEventListener("input", handler, true);
+  textarea.addEventListener("text", handler, true);
+
+  // compositioncommitasis with composing string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitAsIsTest: textarea doesn't have composition string #1");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "Enter" } });
+
+  is(result.length, 4,
+     "runCompositionCommitAsIsTest: 4 events should be fired after dispatching compositioncommitasis #1");
+  is(result[0].type, "text",
+     "runCompositionCommitAsIsTest: text should be fired after dispatching compositioncommitasis because it's dispatched when there is composing string #1");
+  is(result[1].type, "beforeinput",
+     "runCompositionCommitAsIsTest: beforeinput should be fired after dispatching compositioncommitasis because it's dispatched when there is composing string #1");
+  checkInputEvent(result[1], true, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitAsIsTest: after dispatching compositioncommitasis #1");
+  is(result[2].type, "compositionend",
+     "runCompositionCommitAsIsTest: compositionend should be fired after dispatching compositioncommitasis #1");
+  is(result[3].type, "input",
+     "runCompositionCommitAsIsTest: input should be fired after dispatching compositioncommitasis #1");
+  checkInputEvent(result[3], false, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitAsIsTest: after dispatching compositioncommitasis #1");
+  is(textarea.value, "\u3042", "runCompositionCommitAsIsTest: textarea doesn't have committed string #1");
+
+  // compositioncommitasis with committed string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitAsIsTest: textarea doesn't have composition string #2");
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "KEY_Enter", type: "keydown" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitAsIsTest: textarea doesn't have committed string #2");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter", type: "keyup" } });
+
+  is(result.length, 2,
+     "runCompositionCommitAsIsTest: 2 events should be fired after dispatching compositioncommitasis #2");
+  // XXX Do we need a "beforeinput" event here? Not sure.
+  is(result[0].type, "compositionend",
+     "runCompositionCommitAsIsTest: compositionend should be fired after dispatching compositioncommitasis #2");
+  is(result[1].type, "input",
+     "runCompositionCommitAsIsTest: input should be fired after dispatching compositioncommitasis #2");
+  checkInputEvent(result[1], false, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitAsIsTest: after dispatching compositioncommitasis #2");
+  is(textarea.value, "\u3042", "runCompositionCommitAsIsTest: textarea doesn't have committed string #2");
+
+  // compositioncommitasis with committed string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitAsIsTest: textarea doesn't have composition string #3");
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "KEY_Escape", type: "keydown" },
+    });
+  is(textarea.value, "", "runCompositionCommitAsIsTest: textarea has non-empty composition string #3");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Escape", type: "keyup" } });
+
+  is(result.length, 2,
+     "runCompositionCommitAsIsTest: 2 events should be fired after dispatching compositioncommitasis #3");
+  // XXX Do we need a "beforeinput" event here? Not sure.
+  is(result[0].type, "compositionend",
+     "runCompositionCommitAsIsTest: compositionend shouldn't be fired after dispatching compositioncommitasis #3");
+  is(result[1].type, "input",
+     "runCompositionCommitAsIsTest: input should be fired after dispatching compositioncommitasis #3");
+  checkInputEvent(result[1], false, "insertCompositionText", "", [],
+                  "runCompositionCommitAsIsTest: after dispatching compositioncommitasis #3");
+  is(textarea.value, "", "runCompositionCommitAsIsTest: textarea doesn't have committed string #3");
+
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+  textarea.removeEventListener("beforeinput", handler, true);
+  textarea.removeEventListener("input", handler, true);
+  textarea.removeEventListener("text", handler, true);
+}
+
+function runCompositionCommitTest()
+{
+  textarea.focus();
+
+  let result = [];
+  function clearResult()
+  {
+    result = [];
+  }
+
+  function handler(aEvent)
+  {
+    result.push(aEvent);
+  }
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+  textarea.addEventListener("beforeinput", handler, true);
+  textarea.addEventListener("input", handler, true);
+  textarea.addEventListener("text", handler, true);
+
+  // compositioncommit with different composing string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a", type: "keydown" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #1");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "\u3043", key: { key: "a", type: "keyup" } });
+
+  is(result.length, 5,
+     "runCompositionCommitTest: 5 events should be fired after dispatching compositioncommit #1");
+  is(result[0].type, "compositionupdate",
+     "runCompositionCommitTest: compositionupdate should be fired after dispatching compositioncommit because it's dispatched when there is composing string #1");
+  is(result[1].type, "text",
+     "runCompositionCommitTest: text should be fired after dispatching compositioncommit #1");
+  is(result[2].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired after dispatching compositioncommit because it's dispatched when there is composing string #1");
+  checkInputEvent(result[2], true, "insertCompositionText", "\u3043", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #1");
+  is(result[3].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #1");
+  is(result[4].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #1");
+  checkInputEvent(result[4], false, "insertCompositionText", "\u3043", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #1");
+  is(textarea.value, "\u3043", "runCompositionCommitTest: textarea doesn't have committed string #1");
+
+  // compositioncommit with different committed string when there is already committed string
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #2");
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "KEY_Enter", type: "keydown" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have committed string #2");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "\u3043", key: { key: "KEY_Enter", type: "keyup" } });
+
+  is(result.length, 5,
+     "runCompositionCommitTest: 5 events should be fired after dispatching compositioncommit #2");
+  is(result[0].type, "compositionupdate",
+     "runCompositionCommitTest: compositionupdate should be fired after dispatching compositioncommit #2");
+  is(result[1].type, "text",
+     "runCompositionCommitTest: text should be fired after dispatching compositioncommit #2");
+  is(result[2].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired after dispatching compositioncommit #2");
+  checkInputEvent(result[2], true, "insertCompositionText", "\u3043", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #2");
+  is(result[3].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #2");
+  is(result[4].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #2");
+  checkInputEvent(result[4], false, "insertCompositionText", "\u3043", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #2");
+  is(textarea.value, "\u3043", "runCompositionCommitTest: textarea doesn't have committed string #2");
+
+  // compositioncommit with empty composition string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #3");
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "KEY_Enter", type: "keydown" },
+    });
+  is(textarea.value, "", "runCompositionCommitTest: textarea has non-empty composition string #3");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "\u3043", key: { key: "KEY_Enter", type: "keyup" } });
+
+  is(result.length, 5,
+     "runCompositionCommitTest: 5 events should be fired after dispatching compositioncommit #3");
+  is(result[0].type, "compositionupdate",
+     "runCompositionCommitTest: compositionupdate should be fired after dispatching compositioncommit #3");
+  is(result[1].type, "text",
+     "runCompositionCommitTest: text should be fired after dispatching compositioncommit #3");
+  is(result[2].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired after dispatching compositioncommit #3");
+  checkInputEvent(result[2], true, "insertCompositionText", "\u3043", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #3");
+  is(result[3].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #3");
+  is(result[4].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #3");
+  checkInputEvent(result[4], false, "insertCompositionText", "\u3043", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #3");
+  is(textarea.value, "\u3043", "runCompositionCommitTest: textarea doesn't have committed string #3");
+
+  // inserting empty string with simple composition.
+  textarea.value = "abc";
+  textarea.setSelectionRange(3, 3);
+  synthesizeComposition({ type: "compositionstart" });
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "" });
+
+  is(result.length, 4,
+     "runCompositionCommitTest: 4 events should be fired when inserting empty string with composition");
+  is(result[0].type, "text",
+     "runCompositionCommitTest: text should be fired when inserting empty string with composition");
+  is(result[1].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired when inserting empty string with composition");
+  checkInputEvent(result[1], true, "insertCompositionText", "", [],
+                  "runCompositionCommitTest: when inserting empty string with composition");
+  is(result[2].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired when inserting empty string with composition");
+  is(result[3].type, "input",
+     "runCompositionCommitTest: input should be fired when inserting empty string with composition");
+  checkInputEvent(result[3], false, "insertCompositionText", "", [],
+                  "runCompositionCommitTest: when inserting empty string with composition");
+  is(textarea.value, "abc",
+     "runCompositionCommitTest: textarea should keep original value when inserting empty string with composition");
+
+  // replacing selection with empty string with simple composition.
+  textarea.value = "abc";
+  textarea.setSelectionRange(0, 3);
+  synthesizeComposition({ type: "compositionstart" });
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "" });
+
+  is(result.length, 4,
+     "runCompositionCommitTest: 4 events should be fired when replacing with empty string with composition");
+  is(result[0].type, "text",
+     "runCompositionCommitTest: text should be fired when replacing with empty string with composition");
+  is(result[1].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired when replacing with empty string with composition");
+  checkInputEvent(result[1], true, "insertCompositionText", "", [],
+                  "runCompositionCommitTest: when replacing with empty string with composition");
+  is(result[2].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired when replacing with empty string with composition");
+  is(result[3].type, "input",
+     "runCompositionCommitTest: input should be fired when replacing with empty string with composition");
+  checkInputEvent(result[3], false, "insertCompositionText", "", [],
+                  "runCompositionCommitTest: when replacing with empty string with composition");
+  is(textarea.value, "",
+     "runCompositionCommitTest: textarea should become empty when replacing selection with empty string with composition");
+
+  // replacing selection with same string with simple composition.
+  textarea.value = "abc";
+  textarea.setSelectionRange(0, 3);
+  synthesizeComposition({ type: "compositionstart" });
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "abc" });
+
+  is(result.length, 5,
+     "runCompositionCommitTest: 5 events should be fired when replacing selection with same string with composition");
+  is(result[0].type, "compositionupdate",
+     "runCompositionCommitTest: compositionupdate should be fired when replacing selection with same string with composition");
+  is(result[1].type, "text",
+     "runCompositionCommitTest: text should be fired when replacing selection with same string with composition");
+  is(result[2].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired when replacing selection with same string with composition");
+  checkInputEvent(result[2], true, "insertCompositionText", "abc", [],
+                  "runCompositionCommitTest: when replacing selection with same string with composition");
+  is(result[3].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired when replacing selection with same string with composition");
+  is(result[4].type, "input",
+     "runCompositionCommitTest: input should be fired when replacing selection with same string with composition");
+  checkInputEvent(result[4], false, "insertCompositionText", "abc", [],
+                  "runCompositionCommitTest: when replacing selection with same string with composition");
+  is(textarea.value, "abc",
+     "runCompositionCommitTest: textarea should keep same value when replacing selection with same string with composition");
+
+  // compositioncommit with non-empty composition string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #4");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "", key: { key: "KEY_Enter" } });
+
+  is(result.length, 5,
+     "runCompositionCommitTest: 5 events should be fired after dispatching compositioncommit #4");
+  is(result[0].type, "compositionupdate",
+     "runCompositionCommitTest: compositionupdate should be fired after dispatching compositioncommit #4");
+  is(result[1].type, "text",
+     "runCompositionCommitTest: text should be fired after dispatching compositioncommit #4");
+  is(result[2].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired after dispatching compositioncommit #4");
+  checkInputEvent(result[2], true, "insertCompositionText", "", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #4");
+  is(result[3].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #4");
+  is(result[4].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #4");
+  checkInputEvent(result[4], false, "insertCompositionText", "", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #4");
+  is(textarea.value, "", "runCompositionCommitTest: textarea should be empty #4");
+
+  // compositioncommit immediately without compositionstart
+  textarea.value = "";
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "\u3042", key: { key: "a" } });
+
+  is(result.length, 5,
+     "runCompositionCommitTest: 5 events should be fired after dispatching compositioncommit #5");
+  is(result[0].type, "compositionupdate",
+     "runCompositionCommitTest: compositionupdate should be fired after dispatching compositioncommit #5");
+  is(result[1].type, "text",
+     "runCompositionCommitTest: text should be fired after dispatching compositioncommit #5");
+  is(result[2].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired after dispatching compositioncommit #5");
+  checkInputEvent(result[2], true, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #5");
+  is(result[3].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #5");
+  is(result[4].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #5");
+  checkInputEvent(result[4], false, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #5");
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea should be empty #5");
+
+  // compositioncommit with same composition string.
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #5");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "\u3042", key: { key: "KEY_Enter" } });
+
+  is(result.length, 4,
+     "runCompositionCommitTest: 4 events should be fired after dispatching compositioncommit #6");
+  is(result[0].type, "text",
+     "runCompositionCommitTest: text should be fired after dispatching compositioncommit #6");
+  is(result[1].type, "beforeinput",
+     "runCompositionCommitTest: beforeinput should be fired after dispatching compositioncommit #6");
+  checkInputEvent(result[1], true, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #6");
+  is(result[2].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #6");
+  is(result[3].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #6");
+  checkInputEvent(result[3], false, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #6");
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea should have committed string #6");
+
+  // compositioncommit with same composition string when there is committed string
+  textarea.value = "";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #6");
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "KEY_Enter", type: "keydown" },
+    });
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea doesn't have composition string #6");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "\u3042", key: { key: "KEY_Enter", type: "keyup" } });
+
+  is(result.length, 2,
+     "runCompositionCommitTest: 2 events should be fired after dispatching compositioncommit #7");
+  // XXX Do we need a "beforeinput" event here? Not sure.
+  is(result[0].type, "compositionend",
+     "runCompositionCommitTest: compositionend should be fired after dispatching compositioncommit #7");
+  is(result[1].type, "input",
+     "runCompositionCommitTest: input should be fired after dispatching compositioncommit #7");
+  checkInputEvent(result[1], false, "insertCompositionText", "\u3042", [],
+                  "runCompositionCommitTest: after dispatching compositioncommit #7");
+  is(textarea.value, "\u3042", "runCompositionCommitTest: textarea should have committed string #6");
+
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+  textarea.removeEventListener("beforeinput", handler, true);
+  textarea.removeEventListener("input", handler, true);
+  textarea.removeEventListener("text", handler, true);
+}
+
+// eslint-disable-next-line complexity
+async function runCompositionTest()
+{
+  textarea.value = "";
+  textarea.focus();
+  let caretRects = [];
+
+  let caretRect = synthesizeQueryCaretRect(0);
+  if (!checkQueryContentResult(caretRect,
+        "runCompositionTest: synthesizeQueryCaretRect #0")) {
+    return;
+  }
+  caretRects[0] = caretRect;
+
+  // input first character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "o" },
+    });
+
+  if (!checkContent("\u3089", "runCompositionTest", "#1-1") ||
+      !checkSelection(1, "", "runCompositionTest", "#1-1")) {
+    return;
+  }
+
+  caretRect = synthesizeQueryCaretRect(1);
+  if (!checkQueryContentResult(caretRect,
+        "runCompositionTest: synthesizeQueryCaretRect #1-1")) {
+    return;
+  }
+  caretRects[1] = caretRect;
+
+  // input second character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: "\\", code: "IntlYen", keyCode: KeyboardEvent.DOM_VK_BACKSLASH },
+    });
+
+  if (!checkContent("\u3089\u30FC", "runCompositionTest", "#1-2") ||
+      !checkSelection(2, "", "runCompositionTest", "#1-2")) {
+    return;
+  }
+
+  caretRect = synthesizeQueryCaretRect(2);
+  if (!checkQueryContentResult(caretRect,
+        "runCompositionTest: synthesizeQueryCaretRect #1-2")) {
+    return;
+  }
+  caretRects[2] = caretRect;
+
+  isnot(caretRects[2].left, caretRects[1].left,
+        "runCompositionTest: caret isn't moved (#1-2)");
+  is(caretRects[2].top, caretRects[1].top,
+     "runCompositionTest: caret is moved to another line (#1-2)");
+  is(caretRects[2].width, caretRects[1].width,
+     "runCompositionTest: caret width is wrong (#1-2)");
+  is(caretRects[2].height, caretRects[1].height,
+     "runCompositionTest: caret width is wrong (#1-2)");
+
+  // input third character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 },
+      "key": { key: "/" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081", "runCompositionTest", "#1-3") ||
+      !checkSelection(3, "", "runCompositionTest", "#1-3")) {
+    return;
+  }
+
+  caretRect = synthesizeQueryCaretRect(3);
+  if (!checkQueryContentResult(caretRect,
+        "runCompositionTest: synthesizeQueryCaretRect #1-3")) {
+    return;
+  }
+  caretRects[3] = caretRect;
+
+  isnot(caretRects[3].left, caretRects[2].left,
+        "runCompositionTest: caret isn't moved (#1-3)");
+  is(caretRects[3].top, caretRects[2].top,
+     "runCompositionTest: caret is moved to another line (#1-3)");
+  is(caretRects[3].width, caretRects[2].width,
+     "runCompositionTest: caret width is wrong (#1-3)");
+  is(caretRects[3].height, caretRects[2].height,
+     "runCompositionTest: caret height is wrong (#1-3)");
+
+  // moves the caret left
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: "KEY_ArrowLeft" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081", "runCompositionTest", "#1-3-1") ||
+      !checkSelection(2, "", "runCompositionTest", "#1-3-1")) {
+    return;
+  }
+
+
+  caretRect = synthesizeQueryCaretRect(2);
+  if (!checkQueryContentResult(caretRect,
+        "runCompositionTest: synthesizeQueryCaretRect #1-3-1")) {
+    return;
+  }
+
+  is(caretRect.left, caretRects[2].left,
+     "runCompositionTest: caret rects are different (#1-3-1, left)");
+  is(caretRect.top, caretRects[2].top,
+     "runCompositionTest: caret rects are different (#1-3-1, top)");
+  // by bug 335359, the caret width depends on the right side's character.
+  is(caretRect.width, caretRects[2].width + Math.round(window.devicePixelRatio),
+     "runCompositionTest: caret rects are different (#1-3-1, width)");
+  is(caretRect.height, caretRects[2].height,
+     "runCompositionTest: caret rects are different (#1-3-1, height)");
+
+  // moves the caret left
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "KEY_ArrowLeft" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081", "runCompositionTest", "#1-3-2") ||
+      !checkSelection(1, "", "runCompositionTest", "#1-3-2")) {
+    return;
+  }
+
+
+  caretRect = synthesizeQueryCaretRect(1);
+  if (!checkQueryContentResult(caretRect,
+        "runCompositionTest: synthesizeQueryCaretRect #1-3-2")) {
+    return;
+  }
+
+  is(caretRect.left, caretRects[1].left,
+     "runCompositionTest: caret rects are different (#1-3-2, left)");
+  is(caretRect.top, caretRects[1].top,
+     "runCompositionTest: caret rects are different (#1-3-2, top)");
+  // by bug 335359, the caret width depends on the right side's character.
+  is(caretRect.width, caretRects[1].width + Math.round(window.devicePixelRatio),
+     "runCompositionTest: caret rects are different (#1-3-2, width)");
+  is(caretRect.height, caretRects[1].height,
+     "runCompositionTest: caret rects are different (#1-3-2, height)");
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 },
+      "key": { key: "y" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093", "runCompositionTest", "#1-4") ||
+      !checkSelection(4, "", "runCompositionTest", "#1-4")) {
+    return;
+  }
+
+
+  // backspace
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 },
+      "key": { key: "KEY_Backspace" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081", "runCompositionTest", "#1-5") ||
+      !checkSelection(3, "", "runCompositionTest", "#1-5")) {
+    return;
+  }
+
+  // re-input
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 },
+      "key": { key: "y" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093", "runCompositionTest", "#1-6") ||
+      !checkSelection(4, "", "runCompositionTest", "#1-6")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055",
+        "clauses":
+        [
+          { "length": 5, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 5, "length": 0 },
+      "key": { key: "x" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055", "runCompositionTest", "#1-7") ||
+      !checkSelection(5, "", "runCompositionTest", "#1-7")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055\u3044",
+        "clauses":
+        [
+          { "length": 6, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 6, "length": 0 },
+      "key": { key: "e" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055\u3044", "runCompositionTest", "#1-8") ||
+      !checkSelection(6, "", "runCompositionTest", "#1-8")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055\u3044\u3053",
+        "clauses":
+        [
+          { "length": 7, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 7, "length": 0 },
+      "key": { key: "b" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055\u3044\u3053", "runCompositionTest", "#1-8") ||
+      !checkSelection(7, "", "runCompositionTest", "#1-8")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055\u3044\u3053\u3046",
+        "clauses":
+        [
+          { "length": 8, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 8, "length": 0 },
+      "key": { key: "4" },
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055\u3044\u3053\u3046",
+                    "runCompositionTest", "#1-9") ||
+      !checkSelection(8, "", "runCompositionTest", "#1-9")) {
+    return;
+  }
+
+  // convert
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u30E9\u30FC\u30E1\u30F3\u6700\u9AD8",
+        "clauses":
+        [
+          { "length": 4,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": 2,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 },
+      "key": { key: " " },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700\u9AD8",
+                    "runCompositionTest", "#1-10") ||
+      !checkSelection(4, "", "runCompositionTest", "#1-10")) {
+    return;
+  }
+
+  // change the selected clause
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u30E9\u30FC\u30E1\u30F3\u6700\u9AD8",
+        "clauses":
+        [
+          { "length": 4,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": 2,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 6, "length": 0 },
+      "key": { key: "KEY_ArrowLeft", shiftKey: true },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700\u9AD8",
+                    "runCompositionTest", "#1-11") ||
+      !checkSelection(6, "", "runCompositionTest", "#1-11")) {
+    return;
+  }
+
+  // reset clauses
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046",
+        "clauses":
+        [
+          { "length": 5,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": 3,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 5, "length": 0 },
+      "key": { key: "KEY_ArrowRight" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046",
+                    "runCompositionTest", "#1-12") ||
+      !checkSelection(5, "", "runCompositionTest", "#1-12")) {
+    return;
+  }
+
+
+  let textRect1 = synthesizeQueryTextRect(0, 1);
+  let textRect2 = synthesizeQueryTextRect(1, 1);
+  if (!checkQueryContentResult(textRect1,
+        "runCompositionTest: synthesizeQueryTextRect #1-12-1") ||
+      !checkQueryContentResult(textRect2,
+        "runCompositionTest: synthesizeQueryTextRect #1-12-2")) {
+    return;
+  }
+
+  // commit the composition string
+  synthesizeComposition({ type: "compositioncommitasis" });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046",
+                    "runCompositionTest", "#1-13") ||
+      !checkSelection(8, "", "runCompositionTest", "#1-13")) {
+    return;
+  }
+
+  let textRect3 = synthesizeQueryTextRect(0, 1);
+  let textRect4 = synthesizeQueryTextRect(1, 1);
+
+  if (!checkQueryContentResult(textRect3,
+        "runCompositionTest: synthesizeQueryTextRect #1-13-1") ||
+      !checkQueryContentResult(textRect4,
+        "runCompositionTest: synthesizeQueryTextRect #1-13-2")) {
+    return;
+  }
+
+  checkRect(textRect3, textRect1, "runCompositionTest: textRect #1-13-1");
+  checkRect(textRect4, textRect2, "runCompositionTest: textRect #1-13-2");
+
+  // restart composition and input characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3057",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "d" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046\u3057",
+                    "runCompositionTest", "#2-1") ||
+      !checkSelection(8 + 1, "", "runCompositionTest", "#2-1")) {
+    return;
+  }
+
+  let textRect3QueriedWithRelativeOffset = synthesizeQueryTextRect(-8, 1, true);
+  let textRect4QueriedWithRelativeOffset = synthesizeQueryTextRect(-8 + 1, 1, true);
+  checkRect(textRect3QueriedWithRelativeOffset, textRect3, "runCompositionTest: textRect #2-1-2");
+  checkRect(textRect4QueriedWithRelativeOffset, textRect4, "runCompositionTest: textRect #2-1-3");
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3058",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "r" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046\u3058",
+                    "runCompositionTest", "#2-2") ||
+      !checkSelection(8 + 1, "", "runCompositionTest", "#2-2")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3058\u3087",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: ")", code: "Digit9", keyCode: KeyboardEvent.DOM_VK_9, shiftKey: true },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046\u3058\u3087",
+                    "runCompositionTest", "#2-3") ||
+      !checkSelection(8 + 2, "", "runCompositionTest", "#2-3")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3058\u3087\u3046",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 },
+      "key": { key: "4" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046\u3058\u3087\u3046",
+                    "runCompositionTest", "#2-4") ||
+      !checkSelection(8 + 3, "", "runCompositionTest", "#2-4")) {
+    return;
+  }
+
+  // commit the composition string
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3055\u884C\u3053\u3046\u3058\u3087\u3046",
+                    "runCompositionTest", "#2-4") ||
+      !checkSelection(8 + 3, "", "runCompositionTest", "#2-4")) {
+    return;
+  }
+
+  // set selection
+  const selectionSetTest = await synthesizeSelectionSet(4, 7, false);
+  ok(selectionSetTest, "runCompositionTest: selectionSetTest failed");
+
+  if (!checkSelection(4, "\u3055\u884C\u3053\u3046\u3058\u3087\u3046", "runCompositionTest", "#3-1")) {
+    return;
+  }
+
+  // start composition with selection
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u304A",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "6" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u304A",
+                    "runCompositionTest", "#3-2") ||
+      !checkSelection(4 + 1, "", "runCompositionTest", "#3-2")) {
+    return;
+  }
+
+  // remove the composition string
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "KEY_Backspace" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#3-3") ||
+      !checkSelection(4, "", "runCompositionTest", "#3-3")) {
+    return;
+  }
+
+  // re-input the composition string
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3046",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "4" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u3046",
+                    "runCompositionTest", "#3-4") ||
+      !checkSelection(4 + 1, "", "runCompositionTest", "#3-4")) {
+    return;
+  }
+
+  // cancel the composition
+  synthesizeComposition({ type: "compositioncommit", data: "", key: { key: "KEY_Escape" } });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#3-5") ||
+      !checkSelection(4, "", "runCompositionTest", "#3-5")) {
+    return;
+  }
+
+  // bug 271815, some Chinese IMEs for Linux make empty composition string
+  // and compty clause information when it lists up Chinese characters on
+  // its candidate window.
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "a" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#4-1") ||
+      !checkSelection(4, "", "runCompositionTest", "#4-1")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "b" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#4-2") ||
+      !checkSelection(4, "", "runCompositionTest", "#4-2")) {
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommit", data: "\u6700", key: { key: "KEY_Enter" } });
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700",
+                    "runCompositionTest", "#4-3") ||
+      !checkSelection(5, "", "runCompositionTest", "#4-3")) {
+    return;
+  }
+
+  // testing the canceling case
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "a" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700",
+                    "runCompositionTest", "#4-5") ||
+      !checkSelection(5, "", "runCompositionTest", "#4-5")) {
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Escape" } });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700",
+                    "runCompositionTest", "#4-6") ||
+      !checkSelection(5, "", "runCompositionTest", "#4-6")) {
+    return;
+  }
+
+  // testing whether the empty composition string deletes selected string.
+  synthesizeKey("KEY_ArrowLeft", {shiftKey: true});
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "a" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#4-8") ||
+      !checkSelection(4, "", "runCompositionTest", "#4-8")) {
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommit", data: "\u9AD8", key: { key: "KEY_Enter" } });
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u9AD8",
+                    "runCompositionTest", "#4-9") ||
+      !checkSelection(5, "", "runCompositionTest", "#4-9")) {
+    return;
+  }
+
+  synthesizeKey("KEY_Backspace");
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#4-11") ||
+      !checkSelection(4, "", "runCompositionTest", "#4-11")) {
+    return;
+  }
+
+  // bug 23558, ancient Japanese IMEs on Window may send empty text event
+  // twice at canceling composition.
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u6700",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700",
+                    "runCompositionTest", "#5-1") ||
+      !checkSelection(4 + 1, "", "runCompositionTest", "#5-1")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+      "caret": { "start": 0, "length": 0 },
+      "key": { key: "KEY_Backspace", type: "keydown" },
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#5-2") ||
+      !checkSelection(4, "", "runCompositionTest", "#5-2")) {
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Backspace", type: "keyup" } });
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#5-3") ||
+      !checkSelection(4, "", "runCompositionTest", "#5-3")) {
+    return;
+  }
+
+  // Undo tests for the testcases for bug 23558 and bug 271815
+  synthesizeKey("z", { accelKey: true });
+
+  // XXX this is unexpected behavior, see bug 258291
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#6-1") ||
+      !checkSelection(4, "", "runCompositionTest", "#6-1")) {
+    return;
+  }
+
+  synthesizeKey("z", { accelKey: true });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u9AD8",
+                    "runCompositionTest", "#6-2") ||
+      !checkSelection(5, "", "runCompositionTest", "#6-2")) {
+    return;
+  }
+
+  synthesizeKey("z", { accelKey: true });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700",
+                    "runCompositionTest", "#6-3") ||
+      !checkSelection(4, "", "runCompositionTest", "#6-3")) {
+    return;
+  }
+
+  synthesizeKey("z", { accelKey: true });
+
+  // XXX this is unexpected behavior, see bug 258291
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700",
+                    "runCompositionTest", "#6-4") ||
+      !checkSelection(5, "", "runCompositionTest", "#6-4")) {
+    return;
+  }
+
+  synthesizeKey("z", { accelKey: true });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3",
+                    "runCompositionTest", "#6-5") ||
+      !checkSelection(4, "", "runCompositionTest", "#6-5")) {
+    // eslint-disable-next-line no-useless-return
+    return;
+  }
+}
+
+function runCompositionEventTest()
+{
+  const kDescription = "runCompositionEventTest: ";
+  const kEvents = ["compositionstart", "compositionupdate", "compositionend",
+                   "input"];
+
+  input.value = "";
+  input.focus();
+
+  let windowEventCounts = [], windowEventData = [], windowEventLocale = [];
+  let inputEventCounts = [], inputEventData = [], inputEventLocale = [];
+  let preventDefault = false;
+  let stopPropagation = false;
+
+  function initResults()
+  {
+    for (let i = 0; i < kEvents.length; i++) {
+      windowEventCounts[kEvents[i]] = 0;
+      windowEventData[kEvents[i]] = "";
+      windowEventLocale[kEvents[i]] = "";
+      inputEventCounts[kEvents[i]] = 0;
+      inputEventData[kEvents[i]] = "";
+      inputEventLocale[kEvents[i]] = "";
+    }
+  }
+
+  function compositionEventHandlerForWindow(aEvent)
+  {
+    windowEventCounts[aEvent.type]++;
+    windowEventData[aEvent.type] = aEvent.data;
+    windowEventLocale[aEvent.type] = aEvent.locale;
+    if (preventDefault) {
+      aEvent.preventDefault();
+    }
+    if (stopPropagation) {
+      aEvent.stopPropagation();
+    }
+  }
+
+  function formEventHandlerForWindow(aEvent)
+  {
+    ok(aEvent.isTrusted, "input events must be trusted events");
+    windowEventCounts[aEvent.type]++;
+    windowEventData[aEvent.type] = input.value;
+  }
+
+  function compositionEventHandlerForInput(aEvent)
+  {
+    inputEventCounts[aEvent.type]++;
+    inputEventData[aEvent.type] = aEvent.data;
+    inputEventLocale[aEvent.type] = aEvent.locale;
+    if (preventDefault) {
+      aEvent.preventDefault();
+    }
+    if (stopPropagation) {
+      aEvent.stopPropagation();
+    }
+  }
+
+  function formEventHandlerForInput(aEvent)
+  {
+    inputEventCounts[aEvent.type]++;
+    inputEventData[aEvent.type] = input.value;
+  }
+
+  window.addEventListener("compositionstart", compositionEventHandlerForWindow,
+                          true, true);
+  window.addEventListener("compositionend", compositionEventHandlerForWindow,
+                          true, true);
+  window.addEventListener("compositionupdate", compositionEventHandlerForWindow,
+                          true, true);
+  window.addEventListener("input", formEventHandlerForWindow,
+                          true, true);
+
+  input.addEventListener("compositionstart", compositionEventHandlerForInput,
+                         true, true);
+  input.addEventListener("compositionend", compositionEventHandlerForInput,
+                         true, true);
+  input.addEventListener("compositionupdate", compositionEventHandlerForInput,
+                         true, true);
+  input.addEventListener("input", formEventHandlerForInput,
+                         true, true);
+
+  // test for normal case
+  initResults();
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "o" },
+    });
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by window #1");
+  is(windowEventData.compositionstart, "",
+     kDescription + "data of compositionstart isn't empty (window) #1");
+  is(windowEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty (window) #1");
+  is(inputEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by input #1");
+  is(inputEventData.compositionstart, "",
+     kDescription + "data of compositionstart isn't empty (input) #1");
+  is(inputEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty (input) #1");
+
+  is(windowEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by window #1");
+  is(windowEventData.compositionupdate, "\u3089",
+     kDescription + "data of compositionupdate doesn't match (window) #1");
+  is(windowEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (window) #1");
+  is(inputEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by input #1");
+  is(inputEventData.compositionupdate, "\u3089",
+     kDescription + "data of compositionupdate doesn't match (input) #1");
+  is(inputEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (input) #1");
+
+  is(windowEventCounts.compositionend, 0,
+     kDescription + "compositionend has been handled by window #1");
+  is(inputEventCounts.compositionend, 0,
+     kDescription + "compositionend has been handled by input #1");
+
+  is(windowEventCounts.input, 1,
+     kDescription + "input hasn't been handled by window #1");
+  is(windowEventData.input, "\u3089",
+     kDescription + "value of input element wasn't modified (window) #1");
+  is(inputEventCounts.input, 1,
+     kDescription + "input hasn't been handled by input #1");
+  is(inputEventData.input, "\u3089",
+     kDescription + "value of input element wasn't modified (input) #1");
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 },
+      "key": { key: "\\", code: "IntlYen", keyCode: KeyboardEvent.DOM_VK_BACKSLASH },
+    });
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart has been handled more than once by window #2");
+  is(inputEventCounts.compositionstart, 1,
+     kDescription + "compositionstart has been handled more than once by input #2");
+
+  is(windowEventCounts.compositionupdate, 2,
+     kDescription + "compositionupdate hasn't been handled by window #2");
+  is(windowEventData.compositionupdate, "\u3089\u30FC",
+     kDescription + "data of compositionupdate doesn't match (window) #2");
+  is(windowEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (window) #2");
+  is(inputEventCounts.compositionupdate, 2,
+     kDescription + "compositionupdate hasn't been handled by input #2");
+  is(inputEventData.compositionupdate, "\u3089\u30FC",
+     kDescription + "data of compositionupdate doesn't match (input) #2");
+  is(inputEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (input) #2");
+
+  is(windowEventCounts.compositionend, 0,
+     kDescription + "compositionend has been handled during composition by window #2");
+  is(inputEventCounts.compositionend, 0,
+     kDescription + "compositionend has been handled during composition by input #2");
+
+  is(windowEventCounts.input, 2,
+     kDescription + "input hasn't been handled by window #2");
+  is(windowEventData.input, "\u3089\u30FC",
+     kDescription + "value of input element wasn't modified (window) #2");
+  is(inputEventCounts.input, 2,
+     kDescription + "input hasn't been handled by input #2");
+  is(inputEventData.input, "\u3089\u30FC",
+     kDescription + "value of input element wasn't modified (input) #2");
+
+  // text event shouldn't cause composition update, e.g., at committing.
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart has been handled more than once by window #3");
+  is(inputEventCounts.compositionstart, 1,
+     kDescription + "compositionstart has been handled more than once by input #3");
+
+  is(windowEventCounts.compositionupdate, 2,
+     kDescription + "compositionupdate has been fired unexpectedly on window #3");
+  is(inputEventCounts.compositionupdate, 2,
+     kDescription + "compositionupdate has been fired unexpectedly on input #3");
+
+  is(windowEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by window #3");
+  is(windowEventData.compositionend, "\u3089\u30FC",
+     kDescription + "data of compositionend doesn't match (window) #3");
+  is(windowEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty (window) #3");
+  is(inputEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by input #3");
+  is(inputEventData.compositionend, "\u3089\u30FC",
+     kDescription + "data of compositionend doesn't match (input) #3");
+  is(inputEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty (input) #3");
+
+  is(windowEventCounts.input, 3,
+     kDescription + "input hasn't been handled by window #3");
+  is(windowEventData.input, "\u3089\u30FC",
+     kDescription + "value of input element wasn't modified (window) #3");
+  is(inputEventCounts.input, 3,
+     kDescription + "input hasn't been handled by input #3");
+  is(inputEventData.input, "\u3089\u30FC",
+     kDescription + "value of input element wasn't modified (input) #3");
+
+  // select the second character, then, data of composition start should be
+  // the selected character.
+  initResults();
+  synthesizeKey("KEY_ArrowLeft", {shiftKey: true});
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "o" },
+    });
+
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by window #4");
+  is(windowEventData.compositionstart, "\u30FC",
+     kDescription + "data of compositionstart is empty (window) #4");
+  is(windowEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty (window) #4");
+  is(inputEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by input #4");
+  is(inputEventData.compositionstart, "\u30FC",
+     kDescription + "data of compositionstart is empty (input) #4");
+  is(inputEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty (input) #4");
+
+  is(windowEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by window #4");
+  is(windowEventData.compositionupdate, "\u3089",
+     kDescription + "data of compositionupdate doesn't match (window) #4");
+  is(windowEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (window) #4");
+  is(inputEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by input #4");
+  is(inputEventData.compositionupdate, "\u3089",
+     kDescription + "data of compositionupdate doesn't match (input) #4");
+  is(inputEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (input) #4");
+
+  is(windowEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by window #4");
+  is(windowEventData.compositionend, "\u3089",
+     kDescription + "data of compositionend doesn't match (window) #4");
+  is(windowEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty (window) #4");
+  is(inputEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by input #4");
+  is(inputEventData.compositionend, "\u3089",
+     kDescription + "data of compositionend doesn't match (input) #4");
+  is(inputEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty (input) #4");
+
+  is(windowEventCounts.input, 2,
+     kDescription + "input hasn't been handled by window #4");
+  is(windowEventData.input, "\u3089\u3089",
+     kDescription + "value of input element wasn't modified (window) #4");
+  is(inputEventCounts.input, 2,
+     kDescription + "input hasn't been handled by input #4");
+  is(inputEventData.input, "\u3089\u3089",
+     kDescription + "value of input element wasn't modified (input) #4");
+
+  // preventDefault() should effect nothing.
+  preventDefault = true;
+
+  initResults();
+  synthesizeKey("a", { accelKey: true }); // Select All
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306D",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "," },
+    });
+
+  synthesizeComposition({ type: "compositioncommitasis" });
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by window #5");
+  is(windowEventData.compositionstart, "\u3089\u3089",
+     kDescription + "data of compositionstart is empty (window) #5");
+  is(windowEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty (window) #5");
+  is(inputEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by input #5");
+  is(inputEventData.compositionstart, "\u3089\u3089",
+     kDescription + "data of compositionstart is empty (input) #5");
+  is(inputEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty (input) #5");
+
+  is(windowEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by window #5");
+  is(windowEventData.compositionupdate, "\u306D",
+     kDescription + "data of compositionupdate doesn't match (window) #5");
+  is(windowEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (window) #5");
+  is(inputEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by input #5");
+  is(inputEventData.compositionupdate, "\u306D",
+     kDescription + "data of compositionupdate doesn't match (input) #5");
+  is(inputEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty (input) #5");
+
+  is(windowEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by window #5");
+  is(windowEventData.compositionend, "\u306D",
+     kDescription + "data of compositionend doesn't match (window) #5");
+  is(windowEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty (window) #5");
+  is(inputEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by input #5");
+  is(inputEventData.compositionend, "\u306D",
+     kDescription + "data of compositionend doesn't match (input) #5");
+  is(inputEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty (input) #5");
+
+  is(windowEventCounts.input, 2,
+     kDescription + "input hasn't been handled by window #5");
+  is(windowEventData.input, "\u306D",
+     kDescription + "value of input element wasn't modified (window) #5");
+  is(inputEventCounts.input, 2,
+     kDescription + "input hasn't been handled by input #5");
+  is(inputEventData.input, "\u306D",
+     kDescription + "value of input element wasn't modified (input) #5");
+
+  preventDefault = false;
+
+  // stopPropagation() should effect nothing (except event count)
+  stopPropagation = true;
+
+  initResults();
+  synthesizeKey("a", { accelKey: true }); // Select All
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "\\", code: "IntlRo", keyCode: KeyboardEvent.DOM_VK_BACKSLASH },
+    });
+
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by window #6");
+  is(windowEventData.compositionstart, "\u306D",
+     kDescription + "data of compositionstart is empty #6");
+  is(windowEventLocale.compositionstart, "",
+     kDescription + "locale of compositionstart isn't empty #6");
+  is(inputEventCounts.compositionstart, 0,
+     kDescription + "compositionstart has been handled by input #6");
+
+  is(windowEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by window #6");
+  is(windowEventData.compositionupdate, "\u306E",
+     kDescription + "data of compositionupdate doesn't match #6");
+  is(windowEventLocale.compositionupdate, "",
+     kDescription + "locale of compositionupdate isn't empty #6");
+  is(inputEventCounts.compositionupdate, 0,
+     kDescription + "compositionupdate has been handled by input #6");
+
+  is(windowEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by window #6");
+  is(windowEventData.compositionend, "\u306E",
+     kDescription + "data of compositionend doesn't match #6");
+  is(windowEventLocale.compositionend, "",
+     kDescription + "locale of compositionend isn't empty #6");
+  is(inputEventCounts.compositionend, 0,
+     kDescription + "compositionend has been handled by input #6");
+
+  is(windowEventCounts.input, 2,
+     kDescription + "input hasn't been handled by window #6");
+  is(windowEventData.input, "\u306E",
+     kDescription + "value of input element wasn't modified (window) #6");
+  is(inputEventCounts.input, 2,
+     kDescription + "input hasn't been handled by input #6");
+  is(inputEventData.input, "\u306E",
+     kDescription + "value of input element wasn't modified (input) #6");
+
+  stopPropagation = false;
+
+  // create event and dispatch it.
+  initResults();
+
+  input.value = "value of input";
+  synthesizeKey("a", { accelKey: true }); // Select All
+
+  let compositionstart = document.createEvent("CompositionEvent");
+  compositionstart.initCompositionEvent("compositionstart",
+                                        true, true, document.defaultView,
+                                        "start data", "start locale");
+  is(compositionstart.type, "compositionstart",
+     kDescription + "type doesn't match #7");
+  is(compositionstart.data, "start data",
+     kDescription + "data doesn't match #7");
+  is(compositionstart.locale, "start locale",
+     kDescription + "locale doesn't match #7");
+  is(compositionstart.detail, 0,
+     kDescription + "detail isn't 0 #7");
+
+  input.dispatchEvent(compositionstart);
+
+  is(windowEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by window #7");
+  is(windowEventData.compositionstart, "start data",
+     kDescription + "data of compositionstart was changed (window) #7");
+  is(windowEventLocale.compositionstart, "start locale",
+     kDescription + "locale of compositionstart was changed (window) #7");
+  is(inputEventCounts.compositionstart, 1,
+     kDescription + "compositionstart hasn't been handled by input #7");
+  is(inputEventData.compositionstart, "start data",
+     kDescription + "data of compositionstart was changed (input) #7");
+  is(inputEventLocale.compositionstart, "start locale",
+     kDescription + "locale of compositionstart was changed (input) #7");
+
+  is(input.value, "value of input",
+     kDescription + "input value was changed #7");
+
+  let compositionupdate1 = document.createEvent("compositionevent");
+  compositionupdate1.initCompositionEvent("compositionupdate",
+                                          true, false, document.defaultView,
+                                          "composing string", "composing locale");
+  is(compositionupdate1.type, "compositionupdate",
+     kDescription + "type doesn't match #8");
+  is(compositionupdate1.data, "composing string",
+     kDescription + "data doesn't match #8");
+  is(compositionupdate1.locale, "composing locale",
+     kDescription + "locale doesn't match #8");
+  is(compositionupdate1.detail, 0,
+     kDescription + "detail isn't 0 #8");
+
+  input.dispatchEvent(compositionupdate1);
+
+  is(windowEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by window #8");
+  is(windowEventData.compositionupdate, "composing string",
+     kDescription + "data of compositionupdate was changed (window) #8");
+  is(windowEventLocale.compositionupdate, "composing locale",
+     kDescription + "locale of compositionupdate was changed (window) #8");
+  is(inputEventCounts.compositionupdate, 1,
+     kDescription + "compositionupdate hasn't been handled by input #8");
+  is(inputEventData.compositionupdate, "composing string",
+     kDescription + "data of compositionupdate was changed (input) #8");
+  is(inputEventLocale.compositionupdate, "composing locale",
+     kDescription + "locale of compositionupdate was changed (input) #8");
+
+  is(input.value, "value of input",
+     kDescription + "input value was changed #8");
+
+  let compositionupdate2 = document.createEvent("compositionEvent");
+  compositionupdate2.initCompositionEvent("compositionupdate",
+                                          true, false, document.defaultView,
+                                          "commit string", "commit locale");
+  is(compositionupdate2.type, "compositionupdate",
+     kDescription + "type doesn't match #9");
+  is(compositionupdate2.data, "commit string",
+     kDescription + "data doesn't match #9");
+  is(compositionupdate2.locale, "commit locale",
+     kDescription + "locale doesn't match #9");
+  is(compositionupdate2.detail, 0,
+     kDescription + "detail isn't 0 #9");
+
+  input.dispatchEvent(compositionupdate2);
+
+  is(windowEventCounts.compositionupdate, 2,
+     kDescription + "compositionupdate hasn't been handled by window #9");
+  is(windowEventData.compositionupdate, "commit string",
+     kDescription + "data of compositionupdate was changed (window) #9");
+  is(windowEventLocale.compositionupdate, "commit locale",
+     kDescription + "locale of compositionupdate was changed (window) #9");
+  is(inputEventCounts.compositionupdate, 2,
+     kDescription + "compositionupdate hasn't been handled by input #9");
+  is(inputEventData.compositionupdate, "commit string",
+     kDescription + "data of compositionupdate was changed (input) #9");
+  is(inputEventLocale.compositionupdate, "commit locale",
+     kDescription + "locale of compositionupdate was changed (input) #9");
+
+  is(input.value, "value of input",
+     kDescription + "input value was changed #9");
+
+  let compositionend = document.createEvent("Compositionevent");
+  compositionend.initCompositionEvent("compositionend",
+                                      true, false, document.defaultView,
+                                      "end data", "end locale");
+  is(compositionend.type, "compositionend",
+     kDescription + "type doesn't match #10");
+  is(compositionend.data, "end data",
+     kDescription + "data doesn't match #10");
+  is(compositionend.locale, "end locale",
+     kDescription + "locale doesn't match #10");
+  is(compositionend.detail, 0,
+     kDescription + "detail isn't 0 #10");
+
+  input.dispatchEvent(compositionend);
+
+  is(windowEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by window #10");
+  is(windowEventData.compositionend, "end data",
+     kDescription + "data of compositionend was changed (window) #10");
+  is(windowEventLocale.compositionend, "end locale",
+     kDescription + "locale of compositionend was changed (window) #10");
+  is(inputEventCounts.compositionend, 1,
+     kDescription + "compositionend hasn't been handled by input #10");
+  is(inputEventData.compositionend, "end data",
+     kDescription + "data of compositionend was changed (input) #10");
+  is(inputEventLocale.compositionend, "end locale",
+     kDescription + "locale of compositionend was changed (input) #10");
+
+  is(input.value, "value of input",
+     kDescription + "input value was changed #10");
+
+  window.removeEventListener("compositionstart",
+                             compositionEventHandlerForWindow, true);
+  window.removeEventListener("compositionend",
+                             compositionEventHandlerForWindow, true);
+  window.removeEventListener("compositionupdate",
+                             compositionEventHandlerForWindow, true);
+  window.removeEventListener("input",
+                             formEventHandlerForWindow, true);
+
+  input.removeEventListener("compositionstart",
+                            compositionEventHandlerForInput, true);
+  input.removeEventListener("compositionend",
+                            compositionEventHandlerForInput, true);
+  input.removeEventListener("compositionupdate",
+                            compositionEventHandlerForInput, true);
+  input.removeEventListener("input",
+                            formEventHandlerForInput, true);
+}
+
+function runCompositionTestWhoseTextNodeModified() {
+  const selection = windowOfContenteditable.getSelection();
+
+  (function testInsertTextBeforeComposition() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testInsertTextBeforeComposition:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>def</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "def".length);
+    // Insert composition to the end of a text node
+    synthesizeSimpleCompositionChange("g");
+    is(
+      textNode.data,
+      "defg",
+      `${description} Composition should be inserted to end of the text node`
+    );
+
+    // Insert a character before the composition string
+    textNode.insertData(0, "c");
+    is(
+      textNode.data,
+      "cdefg",
+      `${
+        description
+      } Composition should be shifted when a character is inserted before it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}cdef`.length,
+      "g",
+      `${
+        description
+      } IME selection should be shifted when a character is inserted before it`
+    );
+
+    // Update composition string (appending a character)
+    synthesizeSimpleCompositionChange("gh");
+    is(
+      textNode.data,
+      "cdefgh",
+      `${
+        description
+      } Composition should be updated correctly after inserted a character before it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}cdef`.length,
+      "gh",
+      `${
+        description
+      } IME selection should be extended correctly at updating composition after inserted a character before it`
+    );
+
+    // Insert another character before the composition
+    textNode.insertData(0, "b");
+    is(
+      textNode.data,
+      "bcdefgh",
+      `${
+        description
+      } Composition should be shifted when a character is inserted again before it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}bcdef`.length,
+      "gh",
+      `${
+        description
+      } IME selection should be shifted when a character is inserted again before it`
+    );
+
+    // Update the composition string again (appending another character)
+    synthesizeSimpleCompositionChange("ghi");
+    is(
+      textNode.data,
+      "bcdefghi",
+      `${
+        description
+      } Composition should be updated correctly after inserted 2 characters before it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}bcdef`.length,
+      "ghi",
+      `${
+        description
+      } IME selection should be extended correctly at updating composition after inserted 2 characters before it`
+    );
+
+    // Insert a new character before the composition string
+    textNode.insertData(0, "a");
+    is(
+      textNode.data,
+      "abcdefghi",
+      `${
+        description
+      } Composition should be shifted when a character is inserted again and again before it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}abcdef`.length,
+      "ghi",
+      `${
+        description
+      } IME selection should be shifted when a character is inserted again and again before it`
+    );
+
+    // Commit the composition string
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abcdefghi",
+      `${
+        description
+      } Composition should be committed as is`
+    );
+    is(
+      selection.focusOffset,
+      "abcdefghi".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+
+    // Undo the commit
+    synthesizeKey("z", { accelKey: true });
+    is(
+      textNode.data,
+      "abcdef",
+      `${
+        description
+      } Composition should be undone correctly`
+    );
+    is(
+      selection.focusOffset,
+      "abcdef".length,
+      `${
+        description
+      } Selection should be collapsed at where the composition was after undoing`
+    );
+
+    // Redo the commit
+    synthesizeKey("z", { accelKey: true, shiftKey: true });
+    is(
+      textNode.data,
+      "abcdefghi",
+      `${
+        description
+      } Composition should be redone correctly`
+    );
+    is(
+      selection.focusOffset,
+      "abcdefghi".length,
+      `${
+        description
+      } focus offset of Selection should be at end of the commit string after redoing`
+    );
+  })();
+
+  (function testInsertTextImmediatelyBeforeComposition() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testInsertTextImmediatelyBeforeComposition:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>d</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, 0);
+    // Insert composition at start of the text node
+    synthesizeSimpleCompositionChange("b");
+    is(
+      textNode.data,
+      "bd",
+      `${description} Composition should be inserted to start of the text node`
+    );
+
+    // Insert a character before the composition string
+    textNode.insertData(0, "a");
+    is(
+      textNode.data,
+      "abd",
+      `${
+        description
+      } Composition should be shifted when a character is inserted immediately before it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "b",
+      `${
+        description
+      } IME selection should be shifted when a character is inserted immediately before it`,
+      "",
+      { offset: todo_is, text: todo_is }
+    );
+
+    // Update the composition string after inserting character immediately before it
+    synthesizeSimpleCompositionChange("bc");
+    is(
+      textNode.data,
+      "abcd",
+      `${description} Composition should be updated after the inserted character`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "bc",
+      `${
+        description
+      } IME selection should be set at the composition string after the inserted character`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abcd",
+      `${
+        description
+      } Composition should be committed after the inserted character`
+    );
+    is(
+      selection.focusOffset,
+      "abc".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  (function testInsertTextImmediatelyAfterComposition() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testInsertTextImmediatelyAfterComposition:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>a</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "a".length);
+    // Insert composition at end of the text node
+    synthesizeSimpleCompositionChange("b");
+    is(
+      textNode.data,
+      "ab",
+      `${description} Composition should be inserted to start of the text node`
+    );
+
+    // Insert a character after the composition string
+    textNode.insertData("ab".length, "d");
+    is(
+      textNode.data,
+      "abd",
+      `${
+        description
+      } Composition should stay when a character is inserted immediately after it`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "b",
+      `${
+        description
+      } IME selection should stay when a character is inserted immediately after it`
+    );
+
+    // Update the composition string after inserting character immediately after it
+    synthesizeSimpleCompositionChange("bc");
+    is(
+      textNode.data,
+      "abcd",
+      `${description} Composition should be updated before the inserted character`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "bc",
+      `${
+        description
+      } IME selection should be set at the composition string before the inserted character`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abcd",
+      `${
+        description
+      } Composition should be committed before the inserted character`
+    );
+    is(
+      selection.focusOffset,
+      "abc".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  // Inserting/replacing text before the last character of composition string
+  // should be contained by the composition, i.e., updated by next composition
+  // update.  This is Chrome compatible.
+  (function testInsertTextMiddleOfComposition() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testInsertTextMiddleOfComposition:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>a</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "a".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("bd");
+    is(
+      textNode.data,
+      "abd",
+      `${description} Composition should be inserted to end of the text node`
+    );
+
+    // Insert a character before the composition string
+    textNode.insertData("ab".length, "c");
+    is(
+      textNode.data,
+      "abcd",
+      `${
+        description
+      } Inserted string should inserted into the middle of composition string`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "bcd",
+      `${
+        description
+      } IME selection should be extended when a character is inserted into middle of it`
+    );
+
+    // Update the composition string after inserting character into it
+    synthesizeSimpleCompositionChange("BD");
+    is(
+      textNode.data,
+      "aBD",
+      `${
+        description
+      } Composition should be replace the range containing the inserted character`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "BD",
+      `${
+        description
+      } IME selection should be set at the updated composition string`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "aBD",
+      `${
+        description
+      } Composition should be committed without the inserted character`
+    );
+    is(
+      selection.focusOffset,
+      "aBD".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  (function testReplaceFirstCharOfCompositionString() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceFirstCharOfCompositionString:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted`
+    );
+
+    // Replace the composition string
+    textNode.replaceData("ab".length, "c".length, "XYZ");
+    is(
+      textNode.data,
+      "abXYZdefg",
+      `${description} First character of the composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "XYZde",
+      `${description} IME selection should contain the replace string`
+    );
+
+    // Update the composition string after replaced
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "abCDEfg",
+      `${description} Composition should update the replace string too`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "CDE",
+      `${description} IME selection should update the replace string too`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abCDEfg",
+      `${description} Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "abCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  // Although Chrome commits composition if all composition string is removed,
+  // let's keep composition for making TSF stable...
+  (function testReplaceAllCompositionString() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceAllCompositionString:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted to the text node`
+    );
+
+    // Replace the composition string
+    textNode.replaceData("ab".length, "cde".length, "XYZ");
+    is(
+      textNode.data,
+      "abXYZfg",
+      `${description} Composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "",
+      `${
+        description
+      } IME selection should be collapsed before the replace string`
+    );
+
+    // Update the composition string after replaced
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "abCDEXYZfg",
+      `${description} Composition should be inserted again`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "CDE",
+      `${description} IME selection should not contain the replace string`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abCDEXYZfg",
+      `${description} Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "abCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  (function testReplaceCompositionStringAndSurroundedCharacters() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceCompositionStringAndSurroundedCharacters:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted to the text node`
+    );
+
+    // Replace the composition string
+    textNode.replaceData("a".length, "bcdef".length, "XYZ");
+    is(
+      textNode.data,
+      "aXYZg",
+      `${description} Composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "",
+      `${
+        description
+      } IME selection should be collapsed before the replace string`
+    );
+
+    // Update the composition string after replaced
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "aCDEXYZg",
+      `${description} Composition should be inserted again`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "CDE",
+      `${description} IME selection should not contain the replace string`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "aCDEXYZg",
+      `${description} Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "aCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  // If start boundary characters are replaced, the replace string should be
+  // contained into the composition range.  This is Chrome compatible.
+  (function testReplaceStartBoundaryOfCompositionString() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceStartBoundaryOfCompositionString:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted to the text node`
+    );
+
+    // Replace some text
+    textNode.replaceData("a".length, "bc".length, "XYZ");
+    is(
+      textNode.data,
+      "aXYZdefg",
+      `${
+        description
+      } Start of the composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "XYZde",
+      `${description} IME selection should contain the replace string`
+    );
+
+    // Update the replace string and remaining composition.
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "aCDEfg",
+      `${description} Composition should update the replace string too`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}a`.length,
+      "CDE",
+      `${description} IME selection should contain the replace string`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "aCDEfg",
+      `${
+        description
+      } Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "aCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  // If start boundary characters are replaced, the replace string should NOT
+  // be contained in the composition range.  This is Chrome compatible.
+  (function testReplaceEndBoundaryOfCompositionString() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceEndBoundaryOfCompositionString:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted to the text node`
+    );
+
+    // Replace the composition string
+    textNode.replaceData("abcd".length, "ef".length, "XYZ");
+    is(
+      textNode.data,
+      "abcdXYZg",
+      `${
+        description
+      } End half of the composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "cd",
+      `${
+        description
+      } IME selection should be shrunken to the non-replaced part`
+    );
+
+    // Update the composition string after replaced
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "abCDEXYZg",
+      `${description} Only the remaining composition string should be updated`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "CDE",
+      `${description} IME selection should NOT include the replace string`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abCDEXYZg",
+      `${description} Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "abCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  // If the last character of composition is replaced, i.e., it should NOT be
+  // treated as a part of composition string.  This is Chrome compatible.
+  (function testReplaceLastCharOfCompositionString() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceLastCharOfCompositionString:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted`
+    );
+
+    // Replace the composition string
+    textNode.replaceData("abcd".length, "e".length, "XYZ");
+    is(
+      textNode.data,
+      "abcdXYZfg",
+      `${description} Last character of the composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "cd",
+      `${description} IME selection should be shrunken`
+    );
+
+    // Update the composition string after replaced
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "abCDEXYZfg",
+      `${description} Composition should NOT update the replace string`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "CDE",
+      `${description} IME selection should not contain the replace string`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abCDEXYZfg",
+      `${description} Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "abCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+
+  (function testReplaceMiddleCharOfCompositionString() {
+    const description =
+      "runCompositionTestWhoseTextNodeModified: testReplaceMiddleCharOfCompositionString:";
+    contenteditable.focus();
+    contenteditable.innerHTML = "<p>abfg</p>";
+    const textNode = contenteditable.firstChild.firstChild;
+    selection.collapse(textNode, "ab".length);
+    // Insert composition at middle of the text node
+    synthesizeSimpleCompositionChange("cde");
+    is(
+      textNode.data,
+      "abcdefg",
+      `${description} Composition should be inserted`
+    );
+
+    // Replace the composition string
+    textNode.replaceData("abc".length, "d".length, "XYZ");
+    is(
+      textNode.data,
+      "abcXYZefg",
+      `${
+        description
+      } Middle character of the composition should be replaced`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "cXYZe",
+      `${description} IME selection should be extended by the replace string`
+    );
+
+    // Update the composition string after replaced
+    synthesizeSimpleCompositionChange("CDE");
+    is(
+      textNode.data,
+      "abCDEfg",
+      `${description} Composition should update the replace string`
+    );
+    checkIMESelection(
+      "RawClause",
+      true,
+      `${kLF}ab`.length,
+      "CDE",
+      `${description} IME selection should be shrunken after update`
+    );
+
+    // Commit it
+    synthesizeComposition({ type: "compositioncommitasis" });
+    is(
+      textNode.data,
+      "abCDEfg",
+      `${description} Composition should be committed`
+    );
+    is(
+      selection.focusOffset,
+      "abCDE".length,
+      `${description} Selection should be collapsed at end of the commit string`
+    );
+  })();
+}
+
+// eslint-disable-next-line complexity
+function runQueryTextRectInContentEditableTest()
+{
+  contenteditable.focus();
+
+  contenteditable.innerHTML = "<p>abc</p><p>def</p>";
+                      // \n    0  123    4  567
+                      // \r\n  01 234    56 789
+
+  let description = "runTextRectInContentEditableTest: \"" + contenteditable.innerHTML + "\", ";
+
+  // "a"
+  let a = synthesizeQueryTextRect(kLFLen, 1);
+  if (!checkQueryContentResult(a, description + "rect for 'a'")) {
+    return;
+  }
+
+  // "b"
+  let b = synthesizeQueryTextRect(kLFLen + 1, 1);
+  if (!checkQueryContentResult(b, description + "rect for 'b'")) {
+    return;
+  }
+
+  is(b.top, a.top, description + "'a' and 'b' should be at same top");
+  isSimilarTo(b.left, a.left + a.width, 2, description + "left of 'b' should be at similar to right of 'a'");
+  is(b.height, a.height, description + "'a' and 'b' should be same height");
+
+  // "c"
+  let c = synthesizeQueryTextRect(kLFLen + 2, 1);
+  if (!checkQueryContentResult(c, description + "rect for 'c'")) {
+    return;
+  }
+
+  is(c.top, b.top, description + "'b' and 'c' should be at same top");
+  isSimilarTo(c.left, b.left + b.width, 2, description + "left of 'c' should be at similar to right of 'b'");
+  is(c.height, b.height, description + "'b' and 'c' should be same height");
+
+  // "abc" as array
+  let abcAsArray = synthesizeQueryTextRectArray(kLFLen, 3);
+  if (!checkQueryContentResult(abcAsArray, description + "rect array for 'abc'") ||
+      !checkRectArray(abcAsArray, [a, b, c], description + "query text rect array result of 'abc' should match with each query text rect result")) {
+    return;
+  }
+
+  // 2nd <p> (can be computed with the rect of 'c')
+  let p2 = synthesizeQueryTextRect(kLFLen + 3, 1);
+  if (!checkQueryContentResult(p2, description + "rect for 2nd <p>")) {
+    return;
+  }
+
+  is(p2.top, c.top, description + "'c' and a line breaker caused by 2nd <p> should be at same top");
+  isSimilarTo(p2.left, c.left + c.width, 2, description + "left of a line breaker caused by 2nd <p> should be at similar to right of 'c'");
+  is(p2.height, c.height, description + "'c' and a line breaker caused by 2nd <p> should be same height");
+
+  // 2nd <p> as array
+  let p2AsArray = synthesizeQueryTextRectArray(kLFLen + 3, 1);
+  if (!checkQueryContentResult(p2AsArray, description + "2nd <p>'s line breaker as array") ||
+      !checkRectArray(p2AsArray, [p2], description + "query text rect array result of 2nd <p> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let p2_2 = synthesizeQueryTextRect(kLFLen + 4, 1);
+    if (!checkQueryContentResult(p2_2, description + "rect for \\n of \\r\\n caused by 2nd <p>")) {
+      return;
+    }
+
+    is(p2_2.top, p2.top, description + "'\\r' and '\\n' should be at same top");
+    is(p2_2.left, p2.left, description + "'\\r' and '\\n' should be at same top");
+    is(p2_2.height, p2.height, description + "'\\r' and '\\n' should be same height");
+    is(p2_2.width, p2.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let p2_2AsArray = synthesizeQueryTextRectArray(kLFLen + 4, 1);
+    if (!checkQueryContentResult(p2_2AsArray, description + "rect array for \\n of \\r\\n caused by 2nd <p>") ||
+        !checkRectArray(p2_2AsArray, [p2_2], description + "query text rect array result of \\n of \\r\\n caused by 2nd <p> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // "d"
+  let d = synthesizeQueryTextRect(kLFLen * 2 + 3, 1);
+  if (!checkQueryContentResult(d, description + "rect for 'd'")) {
+    return;
+  }
+
+  isGreaterThan(d.top, a.top + a.height, description + "top of 'd' should be greater than bottom of 'a'");
+  is(d.left, a.left, description + "'a' and 'd' should be same at same left");
+  is(d.height, a.height, description + "'a' and 'd' should be same height");
+
+  // "e"
+  let e = synthesizeQueryTextRect(kLFLen * 2 + 4, 1);
+  if (!checkQueryContentResult(e, description + "rect for 'e'")) {
+    return;
+  }
+
+  is(e.top, d.top, description + "'d' and 'd' should be at same top");
+  isSimilarTo(e.left, d.left + d.width, 2, description + "left of 'e' should be at similar to right of 'd'");
+  is(e.height, d.height, description + "'d' and 'e' should be same height");
+
+  // "f"
+  let f = synthesizeQueryTextRect(kLFLen * 2 + 5, 1);
+  if (!checkQueryContentResult(f, description + "rect for 'f'")) {
+    return;
+  }
+
+  is(f.top, e.top, description + "'e' and 'f' should be at same top");
+  isSimilarTo(f.left, e.left + e.width, 2, description + "left of 'f' should be at similar to right of 'e'");
+  is(f.height, e.height, description + "'e' and 'f' should be same height");
+
+  // "def" as array
+  let defAsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 3, 3);
+  if (!checkQueryContentResult(defAsArray, description + "rect array for 'def'") ||
+      !checkRectArray(defAsArray, [d, e, f], description + "query text rect array result of 'def' should match with each query text rect result")) {
+    return;
+  }
+
+  // next of "f" (can be computed with rect of 'f')
+  let next_f = synthesizeQueryTextRect(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(next_f, description + "rect for next of 'f'")) {
+    return;
+  }
+
+  is(next_f.top, d.top, 2, description + "'f' and next of 'f' should be at same top");
+  isSimilarTo(next_f.left, f.left + f.width, 2, description + "left of next of 'f' should be at similar to right of 'f'");
+  is(next_f.height, d.height, description + "'f' and next of 'f' should be same height");
+
+  // next of "f" as array
+  let next_fAsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(next_fAsArray, description + "rect array for next of 'f'") ||
+      !checkRectArray(next_fAsArray, [next_f], description + "query text rect array result of next of 'f' should match with each query text rect result")) {
+    return;
+  }
+
+  // too big offset for the editor
+  let tooBigOffset = synthesizeQueryTextRect(kLFLen * 2 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffset, description + "rect for too big offset")) {
+    return;
+  }
+
+  is(tooBigOffset.top, next_f.top, description + "too big offset and next of 'f' should be at same top");
+  is(tooBigOffset.left, next_f.left, description + "too big offset and next of 'f' should be at same left");
+  is(tooBigOffset.height, next_f.height, description + "too big offset and next of 'f' should be same height");
+  is(tooBigOffset.width, next_f.width, description + "too big offset and next of 'f' should be same width");
+
+  // too big offset for the editors as array
+  let tooBigOffsetAsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffsetAsArray, description + "rect array for too big offset") ||
+      !checkRectArray(tooBigOffsetAsArray, [tooBigOffset], description + "query text rect array result with too big offset should match with each query text rect result")) {
+    return;
+  }
+
+  contenteditable.innerHTML = "<p>abc</p><p>def</p><p><br></p>";
+                      // \n    0  123    4  567    8  9
+                      // \r\n  01 234    56 789    01 23
+
+  description = "runTextRectInContentEditableTest: \"" + contenteditable.innerHTML + "\", ";
+
+  // "f"
+  f = synthesizeQueryTextRect(kLFLen * 2 + 5, 1);
+  if (!checkQueryContentResult(f, description + "rect for 'f'")) {
+    return;
+  }
+
+  is(f.top, e.top, description + "'e' and 'f' should be at same top");
+  is(f.height, e.height, description + "'e' and 'f' should be same height");
+  isSimilarTo(f.left, e.left + e.width, 2, description + "left of 'f' should be at similar to right of 'e'");
+
+  // 3rd <p> (can be computed with rect of 'f')
+  let p3 = synthesizeQueryTextRect(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(p3, description + "rect for 3rd <p>")) {
+    return;
+  }
+
+  is(p3.top, f.top, description + "'f' and a line breaker caused by 3rd <p> should be at same top");
+  is(p3.height, f.height, description + "'f' and a line breaker caused by 3rd <p> should be same height");
+  isSimilarTo(p3.left, f.left + f.width, 2, description + "left of a line breaker caused by 3rd <p> should be similar to right of 'f'");
+
+  // 3rd <p> as array
+  let p3AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(p3AsArray, description + "3rd <p>'s line breaker as array") ||
+      !checkRectArray(p3AsArray, [p3], description + "query text rect array result of 3rd <p> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let p3_2 = synthesizeQueryTextRect(kLFLen * 2 + 7, 1);
+    if (!checkQueryContentResult(p3_2, description + "rect for \\n of \\r\\n caused by 3rd <p>")) {
+      return;
+    }
+
+    is(p3_2.top, p3.top, description + "'\\r' and '\\n' should be at same top");
+    is(p3_2.left, p3.left, description + "'\\r' and '\\n' should be at same top");
+    is(p3_2.height, p3.height, description + "'\\r' and '\\n' should be same height");
+    is(p3_2.width, p3.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let p3_2AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 7, 1);
+    if (!checkQueryContentResult(p3_2AsArray, description + "rect array for \\n of \\r\\n caused by 3rd <p>") ||
+        !checkRectArray(p3_2AsArray, [p3_2], description + "query text rect array result of \\n of \\r\\n caused by 3rd <p> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // <br> in 3rd <p>
+  let br = synthesizeQueryTextRect(kLFLen * 3 + 6, 1);
+  if (!checkQueryContentResult(br, description + "rect for <br> in 3rd <p>")) {
+    return;
+  }
+
+  isGreaterThan(br.top, d.top + d.height, description + "a line breaker caused by <br> in 3rd <p> should be greater than bottom of 'd'");
+  isSimilarTo(br.height, d.height, 2, description + "'d' and a line breaker caused by <br> in 3rd <p> should be similar height");
+  is(br.left, d.left, description + "left of a line breaker caused by <br> in 3rd <p> should be same left of 'd'");
+
+  // <br> in 3rd <p> as array
+  let brAsArray = synthesizeQueryTextRectArray(kLFLen * 3 + 6, 1);
+  if (!checkQueryContentResult(brAsArray, description + "<br> in 3rd <p> as array") ||
+      !checkRectArray(brAsArray, [br], description + "query text rect array result of <br> in 3rd <p> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let br_2 = synthesizeQueryTextRect(kLFLen * 3 + 7, 1);
+    if (!checkQueryContentResult(br_2, description + "rect for \\n of \\r\\n caused by <br> in 3rd <p>")) {
+      return;
+    }
+
+    is(br_2.top, br.top, description + "'\\r' and '\\n' should be at same top");
+    is(br_2.left, br.left, description + "'\\r' and '\\n' should be at same top");
+    is(br_2.height, br.height, description + "'\\r' and '\\n' should be same height");
+    is(br_2.width, br.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let br_2AsArray = synthesizeQueryTextRectArray(kLFLen * 3 + 7, 1);
+    if (!checkQueryContentResult(br_2AsArray, description + "rect array for \\n of \\r\\n caused by <br> in 3rd <p>") ||
+        !checkRectArray(br_2AsArray, [br_2], description + "query text rect array result of \\n of \\r\\n caused by <br> in 3rd <p> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // next of <br> in 3rd <p>
+  let next_br = synthesizeQueryTextRect(kLFLen * 4 + 6, 1);
+  if (!checkQueryContentResult(next_br, description + "rect for next of <br> in 3rd <p>")) {
+    return;
+  }
+
+  is(next_br.top, br.top, description + "next of <br> and <br> should be at same top");
+  is(next_br.left, br.left, description + "next of <br> and <br> should be at same left");
+  is(next_br.height, br.height, description + "next of <br> and <br> should be same height");
+  is(next_br.width, br.width, description + "next of <br> and <br> should be same width");
+
+  // next of <br> in 3rd <p> as array
+  let next_brAsArray = synthesizeQueryTextRectArray(kLFLen * 4 + 6, 1);
+  if (!checkQueryContentResult(next_brAsArray, description + "rect array for next of <br> in 3rd <p>") ||
+      !checkRectArray(next_brAsArray, [next_br], description + "query text rect array result of next of <br> in 3rd <p> should match with each query text rect result")) {
+    return;
+  }
+
+  // too big offset for the editor
+  tooBigOffset = synthesizeQueryTextRect(kLFLen * 4 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffset, description + "rect for too big offset")) {
+    return;
+  }
+
+  is(tooBigOffset.top, next_br.top, description + "too big offset and next of 3rd <p> should be at same top");
+  is(tooBigOffset.left, next_br.left, description + "too big offset and next of 3rd <p> should be at same left");
+  is(tooBigOffset.height, next_br.height, description + "too big offset and next of 3rd <p> should be same height");
+  is(tooBigOffset.width, next_br.width, description + "too big offset and next of 3rd <p> should be same width");
+
+  // too big offset for the editors as array
+  tooBigOffsetAsArray = synthesizeQueryTextRectArray(kLFLen * 4 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffsetAsArray, description + "rect array for too big offset") ||
+      !checkRectArray(tooBigOffsetAsArray, [tooBigOffset], description + "query text rect array result with too big offset should match with each query text rect result")) {
+    return;
+  }
+
+  contenteditable.innerHTML = "<p>abc</p><p>def</p><p></p>";
+                      // \n    0  123    4  567    8
+                      // \r\n  01 234    56 789    0
+
+  description = "runTextRectInContentEditableTest: \"" + contenteditable.innerHTML + "\", ";
+
+  // "f"
+  f = synthesizeQueryTextRect(kLFLen * 2 + 5, 1);
+  if (!checkQueryContentResult(f, description + "rect for 'f'")) {
+    return;
+  }
+
+  is(f.top, e.top, description + "'e' and 'f' should be at same top");
+  isSimilarTo(f.left, e.left + e.width, 2, description + "left of 'f' should be at similar to right of 'e'");
+  is(f.height, e.height, description + "'e' and 'f' should be same height");
+
+  // 3rd <p> (can be computed with rect of 'f')
+  p3 = synthesizeQueryTextRect(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(p3, description + "rect for 3rd <p>")) {
+    return;
+  }
+
+  is(p3.top, f.top, description + "'f' and a line breaker caused by 3rd <p> should be at same top");
+  is(p3.height, f.height, description + "'f' and a line breaker caused by 3rd <p> should be same height");
+  isSimilarTo(p3.left, f.left + f.width, 2, description + "left of a line breaker caused by 3rd <p> should be similar to right of 'f'");
+
+  // 3rd <p> as array
+  p3AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(p3AsArray, description + "3rd <p>'s line breaker as array") ||
+      !checkRectArray(p3AsArray, [p3], description + "query text rect array result of 3rd <p> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let p3_2 = synthesizeQueryTextRect(kLFLen * 2 + 7, 1);
+    if (!checkQueryContentResult(p3_2, description + "rect for \\n of \\r\\n caused by 3rd <p>")) {
+      return;
+    }
+
+    is(p3_2.top, p3.top, description + "'\\r' and '\\n' should be at same top");
+    is(p3_2.left, p3.left, description + "'\\r' and '\\n' should be at same top");
+    is(p3_2.height, p3.height, description + "'\\r' and '\\n' should be same height");
+    is(p3_2.width, p3.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let p3_2AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 7, 1);
+    if (!checkQueryContentResult(p3_2AsArray, description + "rect array for \\n of \\r\\n caused by 3rd <p>") ||
+        !checkRectArray(p3_2AsArray, [p3_2], description + "query text rect array result of \\n of \\r\\n caused by 3rd <p> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // next of 3rd <p>
+  let next_p3 = synthesizeQueryTextRect(kLFLen * 3 + 6, 1);
+  if (!checkQueryContentResult(next_p3, description + "rect for next of 3rd <p>")) {
+    return;
+  }
+
+  isGreaterThan(next_p3.top, d.top + d.height, description + "top of next of 3rd <p> should equal to or be bigger than bottom of 'd'");
+  isSimilarTo(next_p3.left, d.left, 2, description + "left of next of 3rd <p> should be at similar to left of 'd'");
+  isSimilarTo(next_p3.height, d.height, 2, description + "next of 3rd <p> and 'd' should be similar height");
+
+  // next of 3rd <p> as array
+  let next_p3AsArray = synthesizeQueryTextRectArray(kLFLen * 3 + 6, 1);
+  if (!checkQueryContentResult(next_p3AsArray, description + "next of 3rd <p> as array") ||
+      !checkRectArray(next_p3AsArray, [next_p3], description + "query text rect array result of next of 3rd <p> should match with each query text rect result")) {
+    return;
+  }
+
+  // too big offset for the editor
+  tooBigOffset = synthesizeQueryTextRect(kLFLen * 3 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffset, description + "rect for too big offset")) {
+    return;
+  }
+
+  is(tooBigOffset.top, next_p3.top, description + "too big offset and next of 3rd <p> should be at same top");
+  is(tooBigOffset.left, next_p3.left, description + "too big offset and next of 3rd <p> should be at same left");
+  is(tooBigOffset.height, next_p3.height, description + "too big offset and next of 3rd <p> should be same height");
+  is(tooBigOffset.width, next_p3.width, description + "too big offset and next of 3rd <p> should be same width");
+
+  // too big offset for the editors as array
+  tooBigOffsetAsArray = synthesizeQueryTextRectArray(kLFLen * 3 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffsetAsArray, description + "rect array for too big offset") ||
+      !checkRectArray(tooBigOffsetAsArray, [tooBigOffset], description + "query text rect array result with too big offset should match with each query text rect result")) {
+    return;
+  }
+
+  contenteditable.innerHTML = "abc<br>def";
+                      // \n    0123   456
+                      // \r\n  01234  567
+
+  description = "runTextRectInContentEditableTest: \"" + contenteditable.innerHTML + "\", ";
+
+  // "a"
+  a = synthesizeQueryTextRect(0, 1);
+  if (!checkQueryContentResult(a, description + "rect for 'a'")) {
+    return;
+  }
+
+  // "b"
+  b = synthesizeQueryTextRect(1, 1);
+  if (!checkQueryContentResult(b, description + "rect for 'b'")) {
+    return;
+  }
+
+  is(b.top, a.top, description + "'a' and 'b' should be at same top");
+  isSimilarTo(b.left, a.left + a.width, 2, description + "left of 'b' should be at similar to right of 'a'");
+  is(b.height, a.height, description + "'a' and 'b' should be same height");
+
+  // "c"
+  c = synthesizeQueryTextRect(2, 1);
+  if (!checkQueryContentResult(c, description + "rect for 'c'")) {
+    return;
+  }
+
+  is(c.top, b.top, description + "'b' and 'c' should be at same top");
+  isSimilarTo(c.left, b.left + b.width, 2, description + "left of 'c' should be at similar to right of 'b'");
+  is(c.height, b.height, description + "'b' and 'c' should be same height");
+
+  // "abc" as array
+  abcAsArray = synthesizeQueryTextRectArray(0, 3);
+  if (!checkQueryContentResult(abcAsArray, description + "rect array for 'abc'") ||
+      !checkRectArray(abcAsArray, [a, b, c], description + "query text rect array result of 'abc' should match with each query text rect result")) {
+    return;
+  }
+
+  // <br> (can be computed with the rect of 'c')
+  br = synthesizeQueryTextRect(3, 1);
+  if (!checkQueryContentResult(br, description + "rect for <br>")) {
+    return;
+  }
+
+  is(br.top, c.top, description + "'c' and a line breaker caused by <br> should be at same top");
+  isSimilarTo(br.left, c.left + c.width, 2, description + "left of a line breaker caused by <br> should be at similar to right of 'c'");
+  is(br.height, c.height, description + "'c' and a line breaker caused by <br> should be same height");
+
+  // <br> as array
+  brAsArray = synthesizeQueryTextRectArray(3, 1);
+  if (!checkQueryContentResult(brAsArray, description + "<br>'s line breaker as array") ||
+      !checkRectArray(brAsArray, [br], description + "query text rect array result of <br> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let br_2 = synthesizeQueryTextRect(4, 1);
+    if (!checkQueryContentResult(br_2, description + "rect for \n of \r\n caused by <br>")) {
+      return;
+    }
+
+    is(br_2.top, br.top, description + "'\\r' and '\\n' should be at same top");
+    is(br_2.left, br.left, description + "'\\r' and '\\n' should be at same top");
+    is(br_2.height, br.height, description + "'\\r' and '\\n' should be same height");
+    is(br_2.width, br.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let br_2AsArray = synthesizeQueryTextRectArray(4, 1);
+    if (!checkQueryContentResult(br_2AsArray, description + "rect array for \\n of \\r\\n caused by <br>") ||
+        !checkRectArray(br_2AsArray, [br_2], description + "query text rect array result of \\n of \\r\\n caused by <br> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // "d"
+  d = synthesizeQueryTextRect(kLFLen + 3, 1);
+  if (!checkQueryContentResult(d, description + "rect for 'd'")) {
+    return;
+  }
+
+  isSimilarTo(d.top, a.top + a.height, 2, description + "top of 'd' should be at similar to bottom of 'a'");
+  is(d.left, a.left, description + "'a' and 'd' should be same at same left");
+  is(d.height, a.height, description + "'a' and 'd' should be same height");
+
+  // "e"
+  e = synthesizeQueryTextRect(kLFLen + 4, 1);
+  if (!checkQueryContentResult(e, description + "rect for 'e'")) {
+    return;
+  }
+
+  is(e.top, d.top, description + "'d' and 'd' should be at same top");
+  isSimilarTo(e.left, d.left + d.width, 2, description + "left of 'e' should be at similar to right of 'd'");
+  is(e.height, d.height, description + "'d' and 'e' should be same height");
+
+  // "f"
+  f = synthesizeQueryTextRect(kLFLen + 5, 1);
+  if (!checkQueryContentResult(f, description + "rect for 'f'")) {
+    return;
+  }
+
+  is(f.top, e.top, description + "'e' and 'f' should be at same top");
+  isSimilarTo(f.left, e.left + e.width, 2, description + "left of 'f' should be at similar to right of 'e'");
+  is(f.height, e.height, description + "'e' and 'f' should be same height");
+
+  // "def" as array
+  defAsArray = synthesizeQueryTextRectArray(kLFLen + 3, 3);
+  if (!checkQueryContentResult(defAsArray, description + "rect array for 'def'") ||
+      !checkRectArray(defAsArray, [d, e, f], description + "query text rect array result of 'def' should match with each query text rect result")) {
+    return;
+  }
+
+  // next of "f" (can be computed with rect of 'f')
+  next_f = synthesizeQueryTextRect(kLFLen + 6, 1);
+  if (!checkQueryContentResult(next_f, description + "rect for next of 'f'")) {
+    return;
+  }
+
+  is(next_f.top, d.top, 2, description + "'f' and next of 'f' should be at same top");
+  isSimilarTo(next_f.left, f.left + f.width, 2, description + "left of next of 'f' should be at similar to right of 'f'");
+  is(next_f.height, d.height, description + "'f' and next of 'f' should be same height");
+
+  // next of "f" as array
+  next_fAsArray = synthesizeQueryTextRectArray(kLFLen + 6, 1);
+  if (!checkQueryContentResult(next_fAsArray, description + "rect array for next of 'f'") ||
+      !checkRectArray(next_fAsArray, [next_f], description + "query text rect array result of next of 'f' should match with each query text rect result")) {
+    return;
+  }
+
+  // too big offset for the editor
+  tooBigOffset = synthesizeQueryTextRect(kLFLen + 7, 1);
+  if (!checkQueryContentResult(tooBigOffset, description + "rect for too big offset")) {
+    return;
+  }
+
+  is(tooBigOffset.top, next_f.top, description + "too big offset and next of 'f' should be at same top");
+  is(tooBigOffset.left, next_f.left, description + "too big offset and next of 'f' should be at same left");
+  is(tooBigOffset.height, next_f.height, description + "too big offset and next of 'f' should be same height");
+  is(tooBigOffset.width, next_f.width, description + "too big offset and next of 'f' should be same width");
+
+  // too big offset for the editors as array
+  tooBigOffsetAsArray = synthesizeQueryTextRectArray(kLFLen + 7, 1);
+  if (!checkQueryContentResult(tooBigOffsetAsArray, description + "rect array for too big offset") ||
+      !checkRectArray(tooBigOffsetAsArray, [tooBigOffset], description + "query text rect array result with too big offset should match with each query text rect result")) {
+    return;
+  }
+
+  // Note that this case does not have an empty line at the end.
+  contenteditable.innerHTML = "abc<br>def<br>";
+                      // \n    0123   4567
+                      // \r\n  01234  56789
+
+  description = "runTextRectInContentEditableTest: \"" + contenteditable.innerHTML + "\", ";
+
+  // "f"
+  f = synthesizeQueryTextRect(kLFLen + 5, 1);
+  if (!checkQueryContentResult(f, description + "rect for 'f'")) {
+    return;
+  }
+
+  is(f.top, e.top, description + "'e' and 'f' should be at same top");
+  is(f.height, e.height, description + "'e' and 'f' should be same height");
+  isSimilarTo(f.left, e.left + e.width, 2, description + "left of 'f' should be at similar to right of 'e'");
+
+  // 2nd <br> (can be computed with rect of 'f')
+  let br2 = synthesizeQueryTextRect(kLFLen + 6, 1);
+  if (!checkQueryContentResult(br2, description + "rect for 2nd <br>")) {
+    return;
+  }
+
+  is(br2.top, f.top, description + "'f' and a line breaker caused by 2nd <br> should be at same top");
+  is(br2.height, f.height, description + "'f' and a line breaker caused by 2nd <br> should be same height");
+  isSimilarTo(br2.left, f.left + f.width, 2, description + "left of a line breaker caused by 2nd <br> should be similar to right of 'f'");
+
+  // 2nd <br> as array
+  let br2AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(br2AsArray, description + "2nd <br>'s line breaker as array") ||
+      !checkRectArray(br2AsArray, [br2], description + "query text rect array result of 2nd <br> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let br2_2 = synthesizeQueryTextRect(kLFLen + 7, 1);
+    if (!checkQueryContentResult(br2_2, description + "rect for \\n of \\r\\n caused by 2nd <br>")) {
+      return;
+    }
+
+    is(br2_2.top, br2.top, description + "'\\r' and '\\n' should be at same top");
+    is(br2_2.left, br2.left, description + "'\\r' and '\\n' should be at same top");
+    is(br2_2.height, br2.height, description + "'\\r' and '\\n' should be same height");
+    is(br2_2.width, br2.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let br2_2AsArray = synthesizeQueryTextRectArray(kLFLen + 7, 1);
+    if (!checkQueryContentResult(br2_2AsArray, description + "rect array for \\n of \\r\\n caused by 2nd <br>") ||
+        !checkRectArray(br2_2AsArray, [br2_2], description + "query text rect array result of \\n of \\r\\n caused by 2nd <br> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // next of 2nd <br>
+  let next_br2 = synthesizeQueryTextRect(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(next_br2, description + "rect for next of 2nd <br>")) {
+    return;
+  }
+
+  is(next_br2.top, br2.top, description + "2nd <br> and next of 2nd <br> should be at same top");
+  is(next_br2.left, br2.left, description + "2nd <br> and next of 2nd <br> should be at same top");
+  is(next_br2.height, br2.height, description + "2nd <br> and next of 2nd <br> should be same height");
+  is(next_br2.width, br2.width, description + "2nd <br> and next of 2nd <br> should be same width");
+
+  // next of 2nd <br> as array
+  let next_br2AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 6, 1);
+  if (!checkQueryContentResult(next_br2AsArray, description + "rect array for next of 2nd <br>") ||
+      !checkRectArray(next_br2AsArray, [next_br2], description + "query text rect array result of next of 2nd <br> should match with each query text rect result")) {
+    return;
+  }
+
+  // too big offset for the editor
+  tooBigOffset = synthesizeQueryTextRect(kLFLen * 2 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffset, description + "rect for too big offset")) {
+    return;
+  }
+
+  is(tooBigOffset.top, next_br2.top, description + "too big offset and next of 2nd <br> should be at same top");
+  is(tooBigOffset.left, next_br2.left, description + "too big offset and next of 2nd <br> should be at same left");
+  is(tooBigOffset.height, next_br2.height, description + "too big offset and next of 2nd <br> should be same height");
+  is(tooBigOffset.width, next_br2.width, description + "too big offset and next of 2nd <br> should be same width");
+
+  // too big offset for the editors as array
+  tooBigOffsetAsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffsetAsArray, description + "rect array for too big offset") ||
+      !checkRectArray(tooBigOffsetAsArray, [tooBigOffset], description + "query text rect array result with too big offset should match with each query text rect result")) {
+    return;
+  }
+
+  contenteditable.innerHTML = "abc<br>def<br><br>";
+                      // \n    0123   4567   8
+                      // \r\n  01234  56789  01
+
+  description = "runTextRectInContentEditableTest: \"" + contenteditable.innerHTML + "\", ";
+
+  // "f"
+  f = synthesizeQueryTextRect(kLFLen + 5, 1);
+  if (!checkQueryContentResult(f, description + "rect for 'f'")) {
+    return;
+  }
+
+  is(f.top, e.top, description + "'e' and 'f' should be at same top");
+  isSimilarTo(f.left, e.left + e.width, 2, description + "left of 'f' should be at similar to right of 'e'");
+  is(f.height, e.height, description + "'e' and 'f' should be same height");
+
+  // 2nd <br>
+  br2 = synthesizeQueryTextRect(kLFLen + 6, 1);
+  if (!checkQueryContentResult(br2, description + "rect for 2nd <br>")) {
+    return;
+  }
+
+  is(br2.top, f.top, description + "'f' and a line breaker caused by 2nd <br> should be at same top");
+  is(br2.height, f.height, description + "'f' and a line breaker caused by 2nd <br> should be same height");
+  ok(f.left < br2.left, description + "left of a line breaker caused by 2nd <br> should be bigger than left of 'f', f.left=" + f.left + ", br2.left=" + br2.left);
+
+  // 2nd <br> as array
+  br2AsArray = synthesizeQueryTextRectArray(kLFLen + 6, 1);
+  if (!checkQueryContentResult(br2AsArray, description + "2nd <br>'s line breaker as array") ||
+      !checkRectArray(br2AsArray, [br2], description + "query text rect array result of 2nd <br> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let br2_2 = synthesizeQueryTextRect(kLFLen + 7, 1);
+    if (!checkQueryContentResult(br2_2, description + "rect for \\n of \\r\\n caused by 2nd <br>")) {
+      return;
+    }
+
+    is(br2_2.top, br2.top, description + "'\\r' and '\\n' should be at same top");
+    is(br2_2.left, br2.left, description + "'\\r' and '\\n' should be at same top");
+    is(br2_2.height, br2.height, description + "'\\r' and '\\n' should be same height");
+    is(br2_2.width, br2.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let br2_2AsArray = synthesizeQueryTextRectArray(kLFLen + 7, 1);
+    if (!checkQueryContentResult(br2_2AsArray, description + "rect array for \\n of \\r\\n caused by 2nd <br>") ||
+        !checkRectArray(br2_2AsArray, [br2_2], description + "query text rect array result of \\n of \\r\\n caused by 2nd <br> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // 3rd <br>
+  let br3 = synthesizeQueryTextRect(kLFLen * 2 + 7, 1);
+  if (!checkQueryContentResult(br3, description + "rect for next of 3rd <br>")) {
+    return;
+  }
+
+  isSimilarTo(br3.top, d.top + d.height, 3, description + "top of next of 3rd <br> should at similar to bottom of 'd'");
+  isSimilarTo(br3.left, d.left, 2, description + "left of next of 3rd <br> should be at similar to left of 'd'");
+  isSimilarTo(br3.height, d.height, 2, description + "next of 3rd <br> and 'd' should be similar height");
+
+  // 3rd <br> as array
+  let br3AsArray = synthesizeQueryTextRectArray(kLFLen + 6, 1);
+  if (!checkQueryContentResult(br3AsArray, description + "3rd <br>'s line breaker as array") ||
+      !checkRectArray(br3AsArray, [br3], description + "query text rect array result of 3rd <br> should match with each query text rect result")) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    // \n of \r\n
+    let br3_2 = synthesizeQueryTextRect(kLFLen * 2 + 7, 1);
+    if (!checkQueryContentResult(br3_2, description + "rect for \\n of \\r\\n caused by 3rd <br>")) {
+      return;
+    }
+
+    is(br3_2.top, br3.top, description + "'\\r' and '\\n' should be at same top");
+    is(br3_2.left, br3.left, description + "'\\r' and '\\n' should be at same left");
+    is(br3_2.height, br3.height, description + "'\\r' and '\\n' should be same height");
+    is(br3_2.width, br3.width, description + "'\\r' and '\\n' should be same width");
+
+    // \n of \r\n as array
+    let br3_2AsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 7, 1);
+    if (!checkQueryContentResult(br3_2AsArray, description + "rect array for \\n of \\r\\n caused by 3rd <br>") ||
+        !checkRectArray(br3_2AsArray, [br3_2], description + "query text rect array result of \\n of \\r\\n caused by 3rd <br> should match with each query text rect result")) {
+      return;
+    }
+  }
+
+  // next of 3rd <br>
+  let next_br3 = synthesizeQueryTextRect(kLFLen * 3 + 6, 1);
+  if (!checkQueryContentResult(next_br3, description + "rect for next of 3rd <br>")) {
+    return;
+  }
+
+  is(next_br3.top, br3.top, description + "3rd <br> and next of 3rd <br> should be at same top");
+  is(next_br3.left, br3.left, description + "3rd <br> and next of 3rd <br> should be at same left");
+  is(next_br3.height, br3.height, description + "3rd <br> and next of 3rd <br> should be same height");
+  is(next_br3.width, br3.width, description + "3rd <br> and next of 3rd <br> should be same width");
+
+  // next of 3rd <br> as array
+  let next_br3AsArray = synthesizeQueryTextRectArray(kLFLen * 3 + 6, 1);
+  if (!checkQueryContentResult(next_br3AsArray, description + "rect array for next of 3rd <br>") ||
+      !checkRectArray(next_br3AsArray, [next_br3], description + "query text rect array result of next of 3rd <br> should match with each query text rect result")) {
+    return;
+  }
+
+  // too big offset for the editor
+  tooBigOffset = synthesizeQueryTextRect(kLFLen * 3 + 7, 1);
+  if (!checkQueryContentResult(tooBigOffset, description + "rect for too big offset")) {
+    return;
+  }
+
+  is(tooBigOffset.top, next_br3.top, description + "too big offset and next of 3rd <br> should be at same top");
+  is(tooBigOffset.left, next_br3.left, description + "too big offset and next of 3rd <br> should be at same left");
+  is(tooBigOffset.height, next_br3.height, description + "too big offset and next of 3rd <br> should be same height");
+  is(tooBigOffset.width, next_br3.width, description + "too big offset and next of 3rd <br> should be same width");
+
+  // too big offset for the editors as array
+  tooBigOffsetAsArray = synthesizeQueryTextRectArray(kLFLen * 2 + 7, 1);
+  if (checkQueryContentResult(tooBigOffsetAsArray, description + "rect array for too big offset")) {
+    checkRectArray(tooBigOffsetAsArray, [tooBigOffset], description + "query text rect array result with too big offset should match with each query text rect result");
+  }
+
+  if (!(function test_query_text_rects_across_invisible_text() {
+    contenteditable.innerHTML = "<div>\n<div>abc</div></div>";
+                        // \n    0    1 2    345
+                        // \r\n  01   2345   678
+    description = `runQueryTextRectInContentEditableTest: test_query_text_rects_across_invisible_text: "${
+      contenteditable.innerHTML.replace(/\n/g, "\\n")
+    }",`;
+    // rect of "a"
+    const rectA = synthesizeQueryTextRect(kLFLen * 3, 1);
+    if (!checkQueryContentResult(rectA, `${description} rect of "a"`)) {
+      return false;
+    }
+    const rectArrayFromStartToA = synthesizeQueryTextRectArray(0, kLFLen * 3 + 1);
+    if (!checkQueryContentResult(rectArrayFromStartToA, `${description} rect array from invisible text to "a"`)) {
+      return false;
+    }
+    const fromStartToARects = getRectArray(rectArrayFromStartToA);
+    if (!checkRect(
+      fromStartToARects[kLFLen * 3],
+      rectA,
+      `${description} rect for "a" in array should be same as the result of query only it`
+    )) {
+      return false;
+    }
+    return checkRect(
+      fromStartToARects[kLFLen * 2],
+      fromStartToARects[0],
+      `${description} rect for the linebreak in invisible text node should be same as first linebreak`
+    );
+  })()) {
+    return;
+  }
+
+  function test_query_text_rects_starting_from_invisible_text() {
+    contenteditable.innerHTML = "<div>\n<div>abc</div></div>";
+                        // \n    0    1 2    345
+                        // \r\n  01   2345   678
+    description = `runQueryTextRectInContentEditableTest: test_query_text_rects_starting_from_invisible_text: "${
+      contenteditable.innerHTML.replace(/\n/g, "\\n")
+    }",`;
+    // rect of "a"
+    const rectA = synthesizeQueryTextRect(kLFLen * 3, 1);
+    if (!checkQueryContentResult(rectA, `${description} rect of "a"`)) {
+      return false;
+    }
+    const rectArrayFromInvisibleToA = synthesizeQueryTextRectArray(kLFLen, kLFLen * 2 + 1);
+    if (!checkQueryContentResult(rectArrayFromInvisibleToA, `${description} rect array from invisible text to "a"`)) {
+      return false;
+    }
+    const fromInvisibleToARects = getRectArray(rectArrayFromInvisibleToA);
+    if (!checkRect(
+      fromInvisibleToARects[kLFLen * 2],
+      rectA,
+      `${description} rect for "a" in array should be same as the result of query only it`
+    )) {
+      return false;
+    }
+    // For now the rect of characters in invisible text node should be caret rect
+    // before the following line break.  This is inconsistent from the result of
+    // the query text rect array event starting from the previous visible line
+    // break or character, but users anyway cannot insert text into the invisible
+    // text node only with user's operation.  Therefore, this won't be problem
+    // in usual web apps.
+    const caretRectBeforeLineBreakBeforeA = fromInvisibleToARects[kLFLen];
+    return checkRect(
+      fromInvisibleToARects[0],
+      caretRectBeforeLineBreakBeforeA,
+      `${description} rect for the linebreak in invisible text node should be same as caret rect before the following visible linebreak before "a"`
+    );
+  }
+  if (!test_query_text_rects_starting_from_invisible_text()) {
+    return;
+  }
+
+  if (kLFLen > 1) {
+    function test_query_text_rects_starting_from_middle_of_invisible_linebreak() {
+      contenteditable.innerHTML = "<div>\n<div>abc</div></div>";
+                          // \n    0    1 2    345
+                          // \r\n  01   2345   678
+      description = `runQueryTextRectInContentEditableTest: test_query_text_rects_starting_from_middle_of_invisible_linebreak: "${
+        contenteditable.innerHTML.replace(/\n/g, "\\n")
+      }",`;
+      // rect of "a"
+      const rectA = synthesizeQueryTextRect(kLFLen * 3, 1);
+      if (!checkQueryContentResult(rectA, `${description} rect of "a"`)) {
+        return false;
+      }
+      const rectArrayFromInvisibleToA = synthesizeQueryTextRectArray(kLFLen + 1, 1 + kLFLen + 1);
+      if (!checkQueryContentResult(rectArrayFromInvisibleToA, `${description} rect array from invisible text to "a"`)) {
+        return false;
+      }
+      const fromInvisibleToARects = getRectArray(rectArrayFromInvisibleToA);
+      if (!checkRect(
+        fromInvisibleToARects[1 + kLFLen],
+        rectA,
+        `${description} rect for "a" in array should be same as the result of query only it`
+      )) {
+        return false;
+      }
+      // For now the rect of characters in invisible text node should be caret rect
+      // before the following line break.  This is inconsistent from the result of
+      // the query text rect array event starting from the previous visible line
+      // break or character, but users anyway cannot insert text into the invisible
+      // text node only with user's operation.  Therefore, this won't be problem
+      // in usual web apps.
+      const caretRectBeforeLineBreakBeforeA = fromInvisibleToARects[1];
+      return checkRect(
+        fromInvisibleToARects[0],
+        caretRectBeforeLineBreakBeforeA,
+        `${description} rect for the linebreak in invisible text node should be same as caret rect before the following visible linebreak before "a"`
+      );
+    }
+    if (!test_query_text_rects_starting_from_middle_of_invisible_linebreak()) {
+      return;
+    }
+  }
+
+  function test_query_text_rects_ending_with_invisible_text() {
+    contenteditable.innerHTML = "<div><div>abc</div>\n</div>";
+                        // \n    0    1    234      5
+                        // \r\n  01   23   456      78
+    description = `runQueryTextRectInContentEditableTest: test_query_text_rects_ending_with_invisible_text: "${
+      contenteditable.innerHTML.replace(/\n/g, "\\n")
+    }",`;
+    // rect of "c"
+    const rectC = synthesizeQueryTextRect(kLFLen * 2 + 2, 1);
+    if (!checkQueryContentResult(rectC, `${description} rect of "c"`)) {
+      return false;
+    }
+    const rectArrayFromCToInvisible = synthesizeQueryTextRectArray(kLFLen * 2 + 2, 1 + kLFLen);
+    if (!checkQueryContentResult(rectArrayFromCToInvisible, `${description} rect array from "c" to invisible linebreak`)) {
+      return false;
+    }
+    const fromCToInvisibleRects = getRectArray(rectArrayFromCToInvisible);
+    if (!checkRect(
+      fromCToInvisibleRects[0],
+      rectC,
+      `${description} rect for "c" in array should be same as the result of query only it`
+    )) {
+      return false;
+    }
+    const caretRectAfterC = {
+      left: rectC.left + rectC.width,
+      top: rectC.top,
+      width: 1,
+      height: rectC.height,
+    };
+    return checkRectFuzzy(
+      fromCToInvisibleRects[1],
+      caretRectAfterC,
+      {
+        left: 1,
+        top: 0,
+        width: 0,
+        height: 0,
+      },
+      `${description} rect for the linebreak in invisible text node should be same as caret rect after "c"`
+    );
+  }
+  if (!test_query_text_rects_ending_with_invisible_text()) {
+    // eslint-disable-next-line no-useless-return
+    return;
+  }
+}
+
+function runCharAtPointTest(aFocusedEditor, aTargetName)
+{
+  aFocusedEditor.value = "This is a test of the\nContent Events";
+                       // 012345678901234567890  12345678901234
+                       // 0         1         2           3
+
+  aFocusedEditor.focus();
+
+  const kNone = -1;
+  const kTestingOffset             = [     0, 10,    20, 21 + kLFLen, 34 + kLFLen];
+  const kLeftSideOffset            = [ kNone,  9,    19,       kNone, 33 + kLFLen];
+  const kRightSideOffset           = [     1, 11, kNone, 22 + kLFLen,       kNone];
+  const kLeftTentativeCaretOffset  = [     0, 10,    20, 21 + kLFLen, 34 + kLFLen];
+  const kRightTentativeCaretOffset = [     1, 11,    21, 22 + kLFLen, 35 + kLFLen];
+
+  let editorRect = synthesizeQueryEditorRect();
+  if (!checkQueryContentResult(editorRect,
+        "runCharAtPointTest (" + aTargetName + "): editorRect")) {
+    return;
+  }
+
+  for (let i = 0; i < kTestingOffset.length; i++) {
+    let textRect = synthesizeQueryTextRect(kTestingOffset[i], 1);
+    if (!checkQueryContentResult(textRect,
+          "runCharAtPointTest (" + aTargetName + "): textRect: i=" + i)) {
+      continue;
+    }
+
+    checkRectContainsRect(textRect, editorRect,
+      "runCharAtPointTest (" + aTargetName +
+      "): the text rect isn't in the editor");
+
+    // Test #1, getting same character rect by the point near the top-left.
+    let charAtPt1 = synthesizeCharAtPoint(textRect.left + 1,
+                                          textRect.top + 1);
+    if (checkQueryContentResult(charAtPt1,
+          "runCharAtPointTest (" + aTargetName + "): charAtPt1: i=" + i)) {
+      ok(!charAtPt1.notFound,
+         "runCharAtPointTest (" + aTargetName + "): charAtPt1 isn't found: i=" + i);
+      if (!charAtPt1.notFound) {
+        is(charAtPt1.offset, kTestingOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): charAtPt1 offset is wrong: i=" + i);
+        checkRect(charAtPt1, textRect, "runCharAtPointTest (" + aTargetName +
+                  "): charAtPt1 left is wrong: i=" + i);
+      }
+      ok(!charAtPt1.tentativeCaretOffsetNotFound,
+         "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt1 isn't found: i=" + i);
+      if (!charAtPt1.tentativeCaretOffsetNotFound) {
+        is(charAtPt1.tentativeCaretOffset, kLeftTentativeCaretOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt1 is wrong: i=" + i);
+      }
+    }
+
+    // Test #2, getting same character rect by the point near the bottom-right.
+    let charAtPt2 = synthesizeCharAtPoint(textRect.left + textRect.width - 2,
+                                          textRect.top + textRect.height - 2);
+    if (checkQueryContentResult(charAtPt2,
+          "runCharAtPointTest (" + aTargetName + "): charAtPt2: i=" + i)) {
+      ok(!charAtPt2.notFound,
+         "runCharAtPointTest (" + aTargetName + "): charAtPt2 isn't found: i=" + i);
+      if (!charAtPt2.notFound) {
+        is(charAtPt2.offset, kTestingOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): charAtPt2 offset is wrong: i=" + i);
+        checkRect(charAtPt2, textRect, "runCharAtPointTest (" + aTargetName +
+                  "): charAtPt1 left is wrong: i=" + i);
+      }
+      ok(!charAtPt2.tentativeCaretOffsetNotFound,
+         "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt2 isn't found: i=" + i);
+      if (!charAtPt2.tentativeCaretOffsetNotFound) {
+        is(charAtPt2.tentativeCaretOffset, kRightTentativeCaretOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt2 is wrong: i=" + i);
+      }
+    }
+
+    // Test #3, getting left character offset.
+    let charAtPt3 = synthesizeCharAtPoint(textRect.left - 2,
+                                          textRect.top + 1);
+    if (checkQueryContentResult(charAtPt3,
+          "runCharAtPointTest (" + aTargetName + "): charAtPt3: i=" + i)) {
+      is(charAtPt3.notFound, kLeftSideOffset[i] == kNone,
+         kLeftSideOffset[i] == kNone ?
+           "runCharAtPointTest (" + aTargetName + "): charAtPt3 is found: i=" + i :
+           "runCharAtPointTest (" + aTargetName + "): charAtPt3 isn't found: i=" + i);
+      if (!charAtPt3.notFound) {
+        is(charAtPt3.offset, kLeftSideOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): charAtPt3 offset is wrong: i=" + i);
+      }
+      if (kLeftSideOffset[i] == kNone) {
+        // There may be no enough padding-left (depends on platform)
+        todo(false,
+             "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt3 isn't tested: i=" + i);
+      } else {
+        ok(!charAtPt3.tentativeCaretOffsetNotFound,
+           "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt3 isn't found: i=" + i);
+        if (!charAtPt3.tentativeCaretOffsetNotFound) {
+          is(charAtPt3.tentativeCaretOffset, kLeftTentativeCaretOffset[i],
+             "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt3 is wrong: i=" + i);
+        }
+      }
+    }
+
+    // Test #4, getting right character offset.
+    let charAtPt4 = synthesizeCharAtPoint(textRect.left + textRect.width + 1,
+                                          textRect.top + textRect.height - 2);
+    if (checkQueryContentResult(charAtPt4,
+          "runCharAtPointTest (" + aTargetName + "): charAtPt4: i=" + i)) {
+      is(charAtPt4.notFound, kRightSideOffset[i] == kNone,
+         kRightSideOffset[i] == kNone ?
+           "runCharAtPointTest (" + aTargetName + "): charAtPt4 is found: i=" + i :
+           "runCharAtPointTest (" + aTargetName + "): charAtPt4 isn't found: i=" + i);
+      if (!charAtPt4.notFound) {
+        is(charAtPt4.offset, kRightSideOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): charAtPt4 offset is wrong: i=" + i);
+      }
+      ok(!charAtPt4.tentativeCaretOffsetNotFound,
+         "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt4 isn't found: i=" + i);
+      if (!charAtPt4.tentativeCaretOffsetNotFound) {
+        is(charAtPt4.tentativeCaretOffset, kRightTentativeCaretOffset[i],
+           "runCharAtPointTest (" + aTargetName + "): tentative caret offset for charAtPt4 is wrong: i=" + i);
+      }
+    }
+  }
+}
+
+function runCharAtPointAtOutsideTest()
+{
+  textarea.focus();
+  textarea.value = "some text";
+  let editorRect = synthesizeQueryEditorRect();
+  if (!checkQueryContentResult(editorRect,
+        "runCharAtPointAtOutsideTest: editorRect")) {
+    return;
+  }
+  // Check on a text node which is at the outside of editor.
+  let charAtPt = synthesizeCharAtPoint(editorRect.left + 20,
+                                       editorRect.top - 10);
+  if (checkQueryContentResult(charAtPt,
+        "runCharAtPointAtOutsideTest: charAtPt")) {
+    ok(charAtPt.notFound,
+       "runCharAtPointAtOutsideTest: charAtPt is found on outside of editor");
+    ok(charAtPt.tentativeCaretOffsetNotFound,
+       "runCharAtPointAtOutsideTest: tentative caret offset for charAtPt is found on outside of editor");
+  }
+}
+
+async function runSetSelectionEventTest()
+{
+  contenteditable.focus();
+
+  const selection = windowOfContenteditable.getSelection();
+
+  // #1
+  contenteditable.innerHTML = "abc<br>def";
+
+  await synthesizeSelectionSet(0, 100);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #1 (0, 100), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #1 (0, 100), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #1 (0, 100), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node of the editor");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #1 (0, 100), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of children");
+  checkSelection(0, "abc" + kLF + "def", "runSetSelectionEventTest #1 (0, 100), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(2, 2 + kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #1 (2, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 2,
+     "runSetSelectionEventTest #1 (2, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 2");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #1 (2, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #1 (2, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(2, "c" + kLF + "d", "runSetSelectionEventTest #1 (2, 2+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(1, 2);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #1 (1, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #1 (1, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #1 (1, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the first text node");
+  is(selection.focusOffset, contenteditable.firstChild.wholeText.length,
+     "runSetSelectionEventTest #1 (1, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the text node");
+  checkSelection(1, "bc", "runSetSelectionEventTest #1 (1, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #1 (3, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, contenteditable.firstChild.wholeText.length,
+     "runSetSelectionEventTest #1 (3, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the first text node");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #1 (3, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 2,
+     "runSetSelectionEventTest #1 (3, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be the index of the last text node");
+  checkSelection(3, kLF, "runSetSelectionEventTest #1 (3, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(6+kLFLen, 0);
+  is(selection.anchorNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #1 (6+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, contenteditable.lastChild.wholeText.length,
+     "runSetSelectionEventTest #1 (6+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #1 (6+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.anchorOffset, contenteditable.lastChild.wholeText.length,
+     "runSetSelectionEventTest #1 (6+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(6 + kLFLen, "", "runSetSelectionEventTest #1 (6+kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(100, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #1 (100, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node of the editor");
+  is(selection.anchorOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #1 (100, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of children");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #1 (100, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node of the editor");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #1 (100, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of children");
+  checkSelection(6 + kLFLen, "", "runSetSelectionEventTest #1 (100, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #2
+  contenteditable.innerHTML = "<p>a<b>b</b>c</p><p>def</p>";
+
+  await synthesizeSelectionSet(kLFLen, 4+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #2 (kLFLen, 4+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #2 (kLFLen, 4+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the first <p> node");
+  is(selection.focusNode, contenteditable.lastChild.firstChild,
+     "runSetSelectionEventTest #2 (kLFLen, 4+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the second <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #2 (kLFLen, 4+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(kLFLen, "abc" + kLF + "d", "runSetSelectionEventTest #2 (kLFLen, 4+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 2);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #2 (kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #2 (kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the first <p> node");
+  is(selection.focusNode, contenteditable.firstChild.childNodes.item(1).firstChild,
+     "runSetSelectionEventTest #2 (kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the <b> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.item(1).firstChild.wholeText.length,
+     "runSetSelectionEventTest #2 (kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the text node in the <b> node");
+  checkSelection(kLFLen, "ab", "runSetSelectionEventTest #2 (kLFLen, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(1+kLFLen, 2);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #2 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #2 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #2 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node in the first <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #2 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node in the first <p> node");
+  checkSelection(1+kLFLen, "bc", "runSetSelectionEventTest #2 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(2+kLFLen, 2+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.childNodes.item(1).firstChild,
+     "runSetSelectionEventTest #2 (2+kLFLen, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node in the <b> node");
+  is(selection.anchorOffset, contenteditable.firstChild.childNodes.item(1).firstChild.wholeText.length,
+     "runSetSelectionEventTest #2 (2+kLFLen, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the text node in the <b> node");
+  is(selection.focusNode, contenteditable.lastChild.firstChild,
+     "runSetSelectionEventTest #2 (2+kLFLen, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the last <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #2 (2+kLFLen, 2+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(2+kLFLen, "c" + kLF + "d", "runSetSelectionEventTest #2 (2+kLFLen, 2+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen*2, 1);
+  is(selection.anchorNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #2 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the second <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #2 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the second <p> node");
+  is(selection.focusNode, contenteditable.lastChild.firstChild,
+     "runSetSelectionEventTest #2 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the second <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #2 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(3+kLFLen*2, "d", "runSetSelectionEventTest #2 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #2 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #2 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #2 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #2 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #2 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #2 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #2 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the first <p> node");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #2 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the first <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #2 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, kLF, "runSetSelectionEventTest #2 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(2+kLFLen, 1+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.childNodes.item(1).firstChild,
+     "runSetSelectionEventTest #2 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node of the <b> node");
+  is(selection.anchorOffset, contenteditable.firstChild.childNodes.item(1).firstChild.wholeText.length,
+     "runSetSelectionEventTest #2 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node of the first <b> node");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #2 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the second <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #2 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(2+kLFLen, "c" + kLF, "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node of the first <p> node");
+  is(selection.anchorOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node of the first <p> node");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the second <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(3+kLFLen, kLF, "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen, 1+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #2 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node of the first <p> node");
+  is(selection.anchorOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #2 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node of the first <p> node");
+  is(selection.focusNode, contenteditable.lastChild.firstChild,
+     "runSetSelectionEventTest #2 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node of the second <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #2 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(3+kLFLen, kLF + "d", "runSetSelectionEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  // #3
+  contenteditable.innerHTML = "<div>abc<p>def</p></div>";
+
+  await synthesizeSelectionSet(1+kLFLen, 2);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #3 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the first text node");
+  is(selection.focusOffset, contenteditable.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the first text node");
+  checkSelection(1+kLFLen, "bc", "runSetSelectionEventTest #3 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(1+kLFLen, 3+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (1+kLFLen, 3+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #3 (1+kLFLen, 3+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (1+kLFLen, 3+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #3 (1+kLFLen, 3+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(1+kLFLen, "bc" + kLF + "d", "runSetSelectionEventTest #3 (1+kLFLen, 3+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen, 0);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (3+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, contenteditable.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (3+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the first text node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (3+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the first text node");
+  is(selection.focusOffset, contenteditable.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (3+kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the first text node");
+  checkSelection(3+kLFLen, "", "runSetSelectionEventTest #3 (3+kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 6+kLFLen*2);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #3 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #3 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(0, kLF + "abc" + kLF + "def", "runSetSelectionEventTest #3 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 100);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #3 (0, 100), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #3 (0, 100), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #3 (0, 100), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #3 (0, 100), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(0, kLF + "abc" + kLF + "def", "runSetSelectionEventTest #3 (0, 100), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(4+kLFLen*2, 2);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(4+kLFLen*2, "ef", "runSetSelectionEventTest #3 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(4+kLFLen*2, 100);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #3 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(4+kLFLen*2, "ef", "runSetSelectionEventTest #3 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(6+kLFLen*2, 0);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, contenteditable.firstChild.lastChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node");
+  is(selection.focusNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(6+kLFLen*2, "", "runSetSelectionEventTest #3 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(6+kLFLen*2, 1);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, contenteditable.firstChild.lastChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #3 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(6+kLFLen*2, "", "runSetSelectionEventTest #3 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #3 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #3 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the first text node");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #3 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <div> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #3 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, kLF, "runSetSelectionEventTest #3 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 1+kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #3 (0, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #3 (0, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <div> node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (0, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the first text node of the <div> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #3 (0, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(0, kLF + "a", "runSetSelectionEventTest #3 (0, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(2+kLFLen, 1+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node of the <div> node");
+  is(selection.anchorOffset, 2,
+     "runSetSelectionEventTest #3 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 2");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #3 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #3 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(2+kLFLen, "c" + kLF, "runSetSelectionEventTest #3 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node of the <div> node");
+  is(selection.anchorOffset, contenteditable.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the text node of the <div> node");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #3 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #3 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(3+kLFLen, kLF, "runSetSelectionEventTest #3 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen, 1+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #3 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node of the <div> node");
+  is(selection.anchorOffset, contenteditable.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #3 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the text node of the <div> node");
+  is(selection.focusNode, contenteditable.firstChild.lastChild.firstChild,
+     "runSetSelectionEventTest #3 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node of the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #3 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(3+kLFLen, kLF + "d", "runSetSelectionEventTest #3 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  // #4
+  contenteditable.innerHTML = "<div><p>abc</p>def</div>";
+
+  await synthesizeSelectionSet(1+kLFLen*2, 2);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node in the <p> node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the text node in the <p> node");
+  checkSelection(1+kLFLen*2, "bc", "runSetSelectionEventTest #4 (1+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(1+kLFLen*2, 3);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 3), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node in the <p> node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 3), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 3), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #4 (1+kLFLen*2, 3), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(1+kLFLen*2, "bcd", "runSetSelectionEventTest #4 (1+kLFLen*2, 3), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(3+kLFLen*2, 0);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (3+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node in the <p> node");
+  is(selection.anchorOffset, contenteditable.firstChild.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #4 (3+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the text node in the <p> node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (3+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.firstChild.firstChild.wholeText.length,
+     "runSetSelectionEventTest #4 (3+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the text node in the <p> node");
+  checkSelection(3+kLFLen*2, "", "runSetSelectionEventTest #4 (3+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 6+kLFLen*2);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #4 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #4 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(0, kLF + kLF + "abcdef", "runSetSelectionEventTest #4 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 100);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #4 (0, 100), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (0, 100), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #4 (0, 100), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #4 (0, 100), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(0, kLF + kLF + "abcdef", "runSetSelectionEventTest #4 (0, 100), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(4+kLFLen*2, 2);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(4+kLFLen*2, "ef", "runSetSelectionEventTest #4 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(4+kLFLen*2, 100);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #4 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(4+kLFLen*2, "ef", "runSetSelectionEventTest #4 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(6+kLFLen*2, 0);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node");
+  is(selection.focusNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(6+kLFLen*2, "", "runSetSelectionEventTest #4 (6+kLFLen*2, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(6+kLFLen*2, 1);
+  is(selection.anchorNode, contenteditable.firstChild.lastChild,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the last text node");
+  is(selection.anchorOffset, contenteditable.firstChild.lastChild.wholeText.length,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the length of the last text node");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #4 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(6+kLFLen*2, "", "runSetSelectionEventTest #4 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #4 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <div> node");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #4 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <div> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #4 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, kLF, "runSetSelectionEventTest #4 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen*2);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <div> node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, kLF + kLF, "runSetSelectionEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 1+kLFLen*2);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #4 (0, 1+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (0, 1+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <div> node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (0, 1+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #4 (0, 1+kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(0, kLF + kLF + "a", "runSetSelectionEventTest #4 (0, 1+kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 0);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #4 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <div> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #4 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the <div> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #4 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #4 (kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <div> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <p> node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(kLFLen, kLF, "runSetSelectionEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 1+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #4 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <div> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #4 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <p> node");
+  is(selection.focusNode, contenteditable.firstChild.firstChild.firstChild,
+     "runSetSelectionEventTest #4 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node in the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #4 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(kLFLen, kLF +"a", "runSetSelectionEventTest #4 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  // #5
+  contenteditable.innerHTML = "<br>";
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #5 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #5 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #5 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #5 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #5 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #5 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #5 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #5 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #5 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(0, kLF, "runSetSelectionEventTest #5 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #5 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #5 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of the root's children");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #5 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #5 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #5 (kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 1);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #5 (kLFLen, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #5 (kLFLen, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of the root's children");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #5 (kLFLen, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #5 (kLFLen, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #5 (kLFLen, 1), \"" + contenteditable.innerHTML + "\"");
+
+  // #6
+  contenteditable.innerHTML = "<p><br></p>";
+
+  await synthesizeSelectionSet(kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #6 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #6 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the <p>'s children");
+  checkSelection(kLFLen, kLF, "runSetSelectionEventTest #6 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen*2, 0);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #6 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of the <p>'s children");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #6 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the <p>'s children");
+  checkSelection(kLFLen*2, "", "runSetSelectionEventTest #6 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen*2, 1);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #6 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of the root's children");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #6 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #6 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(kLFLen*2, "", "runSetSelectionEventTest #6 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #6 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #6 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #6 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, kLF, "runSetSelectionEventTest #6 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen*2);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #6 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #6 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #6 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the <p>'s children");
+  checkSelection(0, kLF + kLF, "runSetSelectionEventTest #6 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 0);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #6 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #6 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #6 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #6 (kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #7
+  contenteditable.innerHTML = "<br><br>";
+
+  await synthesizeSelectionSet(0, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #7 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #7 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #7 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #7 (0, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(0, kLF, "runSetSelectionEventTest #7 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, kLFLen * 2);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #7 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #7 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #7 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #7 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(0, kLF + kLF, "runSetSelectionEventTest #7 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #7 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #7 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #7 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #7 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #7 (kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #7 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #7 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #7 (kLFLen, kLFLen) selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #7 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(kLFLen, kLF, "runSetSelectionEventTest #7 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen * 2, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #7 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #7 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of the root's children");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #7 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #7 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(kLFLen * 2, "", "runSetSelectionEventTest #7 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #8
+  contenteditable.innerHTML = "<p><br><br></p>";
+
+  await synthesizeSelectionSet(kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(kLFLen, kLF, "runSetSelectionEventTest #7 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, kLFLen * 2);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #8 (kLFLen, kLFLen*2), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the <p>'s children");
+  checkSelection(kLFLen, kLF + kLF, "runSetSelectionEventTest #8 (kLFLen, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen*2, 0);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #8 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #8 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 1");
+  checkSelection(kLFLen*2, "", "runSetSelectionEventTest #8 (kLFLen*2, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen*2, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen*2, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #8 (kLFLen*2, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen*2, kLFLen) selection focus node should be the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #8 (kLFLen*2, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the <p>'s children");
+  checkSelection(kLFLen*2, kLF, "runSetSelectionEventTest #8 (kLFLen*2, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen*3, 0);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen*3, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the <p> node");
+  is(selection.anchorOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #8 (kLFLen*3, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the count of the <p>'s children");
+  is(selection.focusNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #8 (kLFLen*3, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, contenteditable.firstChild.childNodes.length,
+     "runSetSelectionEventTest #8 (kLFLen*3, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the <p>'s children");
+  checkSelection(kLFLen*3, "", "runSetSelectionEventTest #8 (kLFLen*3, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #9 (ContentEventHandler cannot distinguish if <p> can have children, so, the result is same as case #5, "<br>")
+  contenteditable.innerHTML = "<p></p>";
+
+  await synthesizeSelectionSet(kLFLen, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <p> node + 1");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the <p> node");
+  is(selection.focusOffset, 1,
+     "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be the index of the <p> node + 1");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(kLFLen, 1);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be the index of the <p> node + 1");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #9 (kLFLen, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #9 (kLFLen, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(kLFLen, "", "runSetSelectionEventTest #9 (kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #10
+  contenteditable.innerHTML = "";
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #10 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #10 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #10 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #10 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #10 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 1);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #10 (0, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #10 (0, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #10 (0, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #10 (0, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #10 (0, 1), \"" + contenteditable.innerHTML + "\"");
+
+  // #11
+  contenteditable.innerHTML = "<span></span><i><u></u></i>";
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #11 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #11 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #11 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #11 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #11 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(0, 1);
+  is(selection.anchorNode, contenteditable,
+     "runSetSelectionEventTest #11 (0, 1), \"" + contenteditable.innerHTML + "\": selection anchor node should be the root node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #11 (0, 1), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable,
+     "runSetSelectionEventTest #11 (0, 1), \"" + contenteditable.innerHTML + "\": selection focus node should be the root node");
+  is(selection.focusOffset, contenteditable.childNodes.length,
+     "runSetSelectionEventTest #11 (0, 1), \"" + contenteditable.innerHTML + "\": selection focus offset should be the count of the root's children");
+  checkSelection(0, "", "runSetSelectionEventTest #11 (0, 1), \"" + contenteditable.innerHTML + "\"");
+
+  // #12
+  contenteditable.innerHTML = "<span>abc</span><i><u></u></i>";
+  selection.selectAllChildren(contenteditable);
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #12 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #12 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.firstChild.firstChild,
+     "runSetSelectionEventTest #12 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #12 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #12 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #13
+  contenteditable.innerHTML = "<span></span><i>abc<u></u></i>";
+  selection.selectAllChildren(contenteditable);
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable.childNodes.item(1).firstChild,
+     "runSetSelectionEventTest #13 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #13 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.childNodes.item(1).firstChild,
+     "runSetSelectionEventTest #13 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #13 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #13 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #14
+  contenteditable.innerHTML = "<span></span><i><u>abc</u></i>";
+  selection.selectAllChildren(contenteditable);
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable.childNodes.item(1).firstChild.firstChild,
+     "runSetSelectionEventTest #14 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #14 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.childNodes.item(1).firstChild.firstChild,
+     "runSetSelectionEventTest #14 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #14 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #14 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #15
+  contenteditable.innerHTML = "<span></span><i><u></u>abc</i>";
+  selection.selectAllChildren(contenteditable);
+
+  await synthesizeSelectionSet(0, 0);
+  is(selection.anchorNode, contenteditable.childNodes.item(1).lastChild,
+     "runSetSelectionEventTest #15 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the text node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #15 (0, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.childNodes.item(1).lastChild,
+     "runSetSelectionEventTest #15 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the text node");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #15 (0, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(0, "", "runSetSelectionEventTest #15 (0, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #16
+  contenteditable.innerHTML = "a<blink>b</blink>c";
+  await synthesizeSelectionSet(0, 3);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #16 (0, 3), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first text node");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #16 (0, 3), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #16 (0, 3), \"" + contenteditable.innerHTML + "\": selection focus node should be the last text node");
+  is(selection.focusOffset, contenteditable.lastChild.wholeText.length,
+     "runSetSelectionEventTest #16 (0, 3), \"" + contenteditable.innerHTML + "\": selection focus offset should be the length of the last text node");
+  checkSelection(0, "abc", "runSetSelectionEventTest #16 (0, 3), \"" + contenteditable.innerHTML + "\"");
+
+  // #17 (bug 1319660 - incorrect adjustment of content iterator last node)
+  contenteditable.innerHTML = "<div>a</div><div><br></div>";
+
+  await synthesizeSelectionSet(kLFLen, 1+kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #17 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first <div> element");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #17 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #17 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the second <div> element");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #17 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(kLFLen, "a" + kLF, "runSetSelectionEventTest #17 (kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  await synthesizeSelectionSet(1+2*kLFLen, 0);
+  is(selection.anchorNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #17 (1+2*kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor node should be the second <div> element");
+  is(selection.anchorOffset, 0,
+     "runSetSelectionEventTest #17 (1+2*kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 0");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #17 (1+2*kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus node should be the second <div> element");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #17 (1+2*kLFLen, 0), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(1+2*kLFLen, "", "runSetSelectionEventTest #17 (1+2*kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #18 (bug 1319660 - content iterator start node regression)
+  contenteditable.innerHTML = "<div><br></div><div><br></div>";
+
+  await synthesizeSelectionSet(2*kLFLen, kLFLen);
+  is(selection.anchorNode, contenteditable.firstChild,
+     "runSetSelectionEventTest #18 (2*kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor node should be the first <div> element");
+  is(selection.anchorOffset, 1,
+     "runSetSelectionEventTest #18 (2*kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection anchor offset should be 1");
+  is(selection.focusNode, contenteditable.lastChild,
+     "runSetSelectionEventTest #18 (2*kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus node should be the second <div> element");
+  is(selection.focusOffset, 0,
+     "runSetSelectionEventTest #18 (2*kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\": selection focus offset should be 0");
+  checkSelection(2*kLFLen, kLF, "runSetSelectionEventTest #18 (2*kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+}
+
+function runQueryTextContentEventTest()
+{
+  contenteditable.focus();
+
+  let result;
+
+  // #1
+  contenteditable.innerHTML = "abc<br>def";
+
+  result = synthesizeQueryTextContent(0, 6 + kLFLen);
+  is(result.text, "abc" + kLF + "def", "runQueryTextContentEventTest #1 (0, 6+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 100);
+  is(result.text, "abc" + kLF + "def", "runQueryTextContentEventTest #1 (0, 100), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(2, 2 + kLFLen);
+  is(result.text, "c" + kLF + "d", "runQueryTextContentEventTest #1 (2, 2+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(1, 2);
+  is(result.text, "bc", "runQueryTextContentEventTest #1 (1, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #1 (3, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(6 + kLFLen, 1);
+  is(result.text, "", "runQueryTextContentEventTest #1 (6 + kLFLen, 0), \"" + contenteditable.innerHTML + "\"");
+
+  // #2
+  contenteditable.innerHTML = "<p>a<b>b</b>c</p><p>def</p>";
+
+  result = synthesizeQueryTextContent(kLFLen, 4+kLFLen);
+  is(result.text, "abc" + kLF + "d", "runQueryTextContentEventTest #2 (kLFLen, 4+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen, 2);
+  is(result.text, "ab", "runQueryTextContentEventTest #2 (kLFLen, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(1+kLFLen, 2);
+  is(result.text, "bc", "runQueryTextContentEventTest #2 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(2+kLFLen, 2+kLFLen);
+  is(result.text, "c" + kLF + "d", "runQueryTextContentEventTest #2 (2+kLFLen, 2+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen*2, 1);
+  is(result.text, "d", "runQueryTextContentEventTest #2 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #2 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(2+kLFLen, 1+kLFLen);
+  is(result.text, "c" + kLF, "runQueryTextContentEventTest #2 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #2 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen, 1+kLFLen);
+  is(result.text, kLF + "d", "runQueryTextContentEventTest #2 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  // #3
+  contenteditable.innerHTML = "<div>abc<p>def</p></div>";
+
+  result = synthesizeQueryTextContent(1+kLFLen, 2);
+  is(result.text, "bc", "runQueryTextContentEventTest #3 (1+kLFLen, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(1+kLFLen, 3+kLFLen);
+  is(result.text, "bc" + kLF + "d", "runQueryTextContentEventTest #3 (1+kLFLen, 3+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen*2, 1);
+  is(result.text, "d", "runQueryTextContentEventTest #3 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 6+kLFLen*2);
+  is(result.text, kLF + "abc" + kLF + "def", "runQueryTextContentEventTest #3 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 100);
+  is(result.text, kLF + "abc" + kLF + "def", "runQueryTextContentEventTest #3 (0, 100), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(4+kLFLen*2, 2);
+  is(result.text, "ef", "runQueryTextContentEventTest #3 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(4+kLFLen*2, 100);
+  is(result.text, "ef", "runQueryTextContentEventTest #3 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(6+kLFLen*2, 1);
+  is(result.text, "", "runQueryTextContentEventTest #3 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #3 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 1+kLFLen);
+  is(result.text, kLF + "a", "runQueryTextContentEventTest #3 (0, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(2+kLFLen, 1+kLFLen);
+  is(result.text, "c" + kLF, "runQueryTextContentEventTest #3 (2+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #3 (3+kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen, 1+kLFLen);
+  is(result.text, kLF + "d", "runQueryTextContentEventTest #3 (3+kLFLen, 1+kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  // #4
+  contenteditable.innerHTML = "<div><p>abc</p>def</div>";
+
+  result = synthesizeQueryTextContent(1+kLFLen*2, 2);
+  is(result.text, "bc", "runQueryTextContentEventTest #4 (1+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(1+kLFLen*2, 3);
+  is(result.text, "bcd", "runQueryTextContentEventTest #4 (1+kLFLen*2, 3), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(3+kLFLen*2, 1);
+  is(result.text, "d", "runQueryTextContentEventTest #4 (3+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 6+kLFLen*2);
+  is(result.text, kLF + kLF + "abcdef", "runQueryTextContentEventTest #4 (0, 6+kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 100);
+  is(result.text, kLF + kLF + "abcdef", "runQueryTextContentEventTest #4 (0, 100), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(4+kLFLen*2, 2);
+  is(result.text, "ef", "runQueryTextContentEventTest #4 (4+kLFLen*2, 2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(4+kLFLen*2, 100);
+  is(result.text, "ef", "runQueryTextContentEventTest #4 (4+kLFLen*2, 100), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(6+kLFLen*2, 1);
+  is(result.text, "", "runQueryTextContentEventTest #4 (6+kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #4 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen*2);
+  is(result.text, kLF + kLF, "runQueryTextContentEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, 1+kLFLen*2);
+  is(result.text, kLF + kLF + "a", "runQueryTextContentEventTest #4 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen, 1+kLFLen);
+  is(result.text, kLF + "a", "runQueryTextContentEventTest #4 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  // #5
+  contenteditable.innerHTML = "<br>";
+
+  result = synthesizeQueryTextContent(0, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #5 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen, 1);
+  is(result.text, "", "runQueryTextContentEventTest #5 (kLFLen, 1), \"" + contenteditable.innerHTML + "\"");
+
+  // #6
+  contenteditable.innerHTML = "<p><br></p>";
+
+  result = synthesizeQueryTextContent(kLFLen, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #6 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen*2, 1);
+  is(result.text, "", "runQueryTextContentEventTest #5 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #6 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen*2);
+  is(result.text, kLF + kLF, "runQueryTextContentEventTest #6 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  // #7
+  contenteditable.innerHTML = "<br><br>";
+
+  result = synthesizeQueryTextContent(0, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #7 (0, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(0, kLFLen * 2);
+  is(result.text, kLF + kLF, "runQueryTextContentEventTest #7 (0, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #7 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen * 2, 1);
+  is(result.text, "", "runQueryTextContentEventTest #7 (kLFLen*2, 1), \"" + contenteditable.innerHTML + "\"");
+
+  // #8
+  contenteditable.innerHTML = "<p><br><br></p>";
+
+  result = synthesizeQueryTextContent(kLFLen, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #8 (kLFLen, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen, kLFLen * 2);
+  is(result.text, kLF + kLF, "runQueryTextContentEventTest #8 (kLFLen, kLFLen*2), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen*2, kLFLen);
+  is(result.text, kLF, "runQueryTextContentEventTest #8 (kLFLen*2, kLFLen), \"" + contenteditable.innerHTML + "\"");
+
+  result = synthesizeQueryTextContent(kLFLen*3, 1);
+  is(result.text, "", "runQueryTextContentEventTest #8 (kLFLen*3, 1), \"" + contenteditable.innerHTML + "\"");
+
+  // #16
+  contenteditable.innerHTML = "a<blink>b</blink>c";
+
+  result = synthesizeQueryTextContent(0, 3);
+  is(result.text, "abc", "runQueryTextContentEventTest #16 (0, 3), \"" + contenteditable.innerHTML + "\"");
+}
+
+function runQuerySelectionEventTest()
+{
+  contenteditable.focus();
+
+  let selection = windowOfContenteditable.getSelection();
+
+  // #1
+  contenteditable.innerHTML = "<br/>a";
+  selection.setBaseAndExtent(
+    contenteditable.firstChild,
+    0,
+    contenteditable.lastChild,
+    1
+  );
+  checkSelection(
+    0,
+    `${kLF}a`,
+    `runQuerySelectionEventTest #1, "${contenteditable.innerHTML}"`
+  );
+
+  // #2
+  contenteditable.innerHTML = "<p></p><p>abc</p>";
+  selection.setBaseAndExtent(
+    contenteditable.firstChild,
+    0,
+    contenteditable.lastChild.firstChild,
+    1
+  );
+  checkSelection(
+    kLFLen,
+    `${kLF}a`,
+    `runQuerySelectionEventTest #2, "${contenteditable.innerHTML}"`
+  );
+
+  // #3
+  contenteditable.innerHTML = "<p>abc</p><p>def</p>";
+  selection.setBaseAndExtent(
+    contenteditable.firstChild,
+    0,
+    contenteditable.lastChild.firstChild,
+    1
+  );
+  checkSelection(
+    kLFLen,
+    `abc${kLF}d`,
+    `runQuerySelectionEventTest #3, "${contenteditable.innerHTML}"`
+  );
+
+  // #4
+  contenteditable.innerHTML = "<p>abc</p>";
+  selection.removeAllRanges();
+  checkSelection(
+    null,
+    null,
+    `runQuerySelectionEventTest #4, "${contenteditable.innerHTML}"`
+  );
+}
+
+function runQueryIMESelectionTest()
+{
+  textarea.focus();
+  textarea.value = "before  after";
+  let startoffset = textarea.selectionStart = textarea.selectionEnd = "before ".length;
+
+  if (!checkIMESelection("RawClause", false, 0, "", "runQueryIMESelectionTest: before starting composition") ||
+      !checkIMESelection("SelectedRawClause", false, 0, "", "runQueryIMESelectionTest: before starting composition") ||
+      !checkIMESelection("ConvertedClause", false, 0, "", "runQueryIMESelectionTest: before starting composition") ||
+      !checkIMESelection("SelectedClause", false, 0, "", "runQueryIMESelectionTest: before starting composition")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "a",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  if (!checkIMESelection("RawClause", true, startoffset, "a", "runQueryIMESelectionTest: inputting raw text") ||
+      !checkIMESelection("SelectedRawClause", false, 0, "", "runQueryIMESelectionTest: inputting raw text") ||
+      !checkIMESelection("ConvertedClause", false, 0, "", "runQueryIMESelectionTest: inputting raw text") ||
+      !checkIMESelection("SelectedClause", false, 0, "", "runQueryIMESelectionTest: inputting raw text")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "abcdefgh",
+        "clauses":
+        [
+          { "length": 8, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 8, "length": 0 }
+    });
+
+  if (!checkIMESelection("RawClause", true, startoffset, "abcdefgh", "runQueryIMESelectionTest: updating raw text") ||
+      !checkIMESelection("SelectedRawClause", false, 0, "", "runQueryIMESelectionTest: updating raw text") ||
+      !checkIMESelection("ConvertedClause", false, 0, "", "runQueryIMESelectionTest: updating raw text") ||
+      !checkIMESelection("SelectedClause", false, 0, "", "runQueryIMESelectionTest: updating raw text")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "ABCDEFGH",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": 3, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": 3, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  if (!checkIMESelection("RawClause", false, 0, "", "runQueryIMESelectionTest: starting to convert") ||
+      !checkIMESelection("SelectedRawClause", false, 0, "", "runQueryIMESelectionTest: starting to convert") ||
+      !checkIMESelection("ConvertedClause", true, startoffset + 2, "CDE", "runQueryIMESelectionTest: starting to convert") ||
+      !checkIMESelection("SelectedClause", true, startoffset, "AB", "runQueryIMESelectionTest: starting to convert")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "ABCDEFGH",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": 3, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": 3, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+        ]
+      },
+      "caret": { "start": 5, "length": 0 }
+    });
+
+  if (!checkIMESelection("RawClause", false, 0, "", "runQueryIMESelectionTest: changing selected clause") ||
+      !checkIMESelection("SelectedRawClause", false, 0, "", "runQueryIMESelectionTest: changing selected clause") ||
+      !checkIMESelection("ConvertedClause", true, startoffset, "AB", "runQueryIMESelectionTest: changing selected clause") ||
+      !checkIMESelection("SelectedClause", true, startoffset + 2, "CDE", "runQueryIMESelectionTest: changing selected clause")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommitasis" });
+
+  if (!checkIMESelection("RawClause", false, 0, "", "runQueryIMESelectionTest: after committing composition") ||
+      !checkIMESelection("SelectedRawClause", false, 0, "", "runQueryIMESelectionTest: after committing composition") ||
+      !checkIMESelection("ConvertedClause", false, 0, "", "runQueryIMESelectionTest: after committing composition") ||
+      !checkIMESelection("SelectedClause", false, 0, "", "runQueryIMESelectionTest: after committing composition")) {
+    return;
+  }
+
+  startoffset = textarea.selectionStart;
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "abcdefgh",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_SELECTED_RAW_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_SELECTED_RAW_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": 1, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+        ]
+      },
+      "caret": { "start": 8, "length": 0 }
+    });
+
+  if (!checkIMESelection("RawClause", true, startoffset, "a", "runQueryIMESelectionTest: unrealistic testcase") ||
+      !checkIMESelection("SelectedRawClause", true, startoffset + 1, "b", "runQueryIMESelectionTest: unrealistic testcase") ||
+      !checkIMESelection("ConvertedClause", true, startoffset + 2, "c", "runQueryIMESelectionTest: unrealistic testcase") ||
+      !checkIMESelection("SelectedClause", true, startoffset + 3, "d", "runQueryIMESelectionTest: unrealistic testcase")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommitasis" });
+}
+
+function runQueryPasswordTest() {
+  function checkRange(aOffset, aLength, aExpectedResult, aDescription) {
+    password.focus();
+    let result = synthesizeQueryTextContent(aOffset, aLength);
+    is(result.text, aExpectedResult,
+       `${aDescription}: synthesizeQueryTextContent(${aOffset}, ${aLength})`);
+    password.setSelectionRange(aOffset, aOffset + aLength);
+    result = synthesizeQuerySelectedText();
+    is(result.text, aExpectedResult,
+       `${aDescription}: synthesizeQuerySelectedText(${aOffset}, ${aLength})`);
+  }
+
+  let editor = password.editor;
+  const kMask = editor.passwordMask;
+  password.value = "abcdef";
+
+  editor.mask();
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range is not specified #1");
+  checkRange(0, 3, `${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range is not specified #2");
+  checkRange(3, 3, `${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range is not specified #3");
+  checkRange(2, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range is not specified #4");
+
+  editor.unmask(0, 6);
+  checkRange(0, 6, "abcdef",
+             "runQueryPasswordTest: unmasked range 0-6 #1");
+  checkRange(0, 3, "abc",
+             "runQueryPasswordTest: unmasked range 0-6 #2");
+  checkRange(3, 3, "def",
+             "runQueryPasswordTest: unmasked range 0-6 #3");
+  checkRange(2, 2, "cd",
+             "runQueryPasswordTest: unmasked range 0-6 #4");
+
+  editor.unmask(0, 3);
+  checkRange(0, 6, `abc${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range 0-3 #1");
+  checkRange(0, 3, "abc",
+             "runQueryPasswordTest: unmasked range 0-3 #2");
+  checkRange(3, 3, `${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range 0-3 #3");
+  checkRange(2, 2, `c${kMask}`,
+             "runQueryPasswordTest: unmasked range 0-3 #4");
+
+  editor.unmask(3, 6);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}def`,
+             "runQueryPasswordTest: unmasked range 3-6 #1");
+  checkRange(0, 3, `${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range 3-6 #2");
+  checkRange(3, 3, `def`,
+             "runQueryPasswordTest: unmasked range 3-6 #3");
+  checkRange(2, 2, `${kMask}d`,
+             "runQueryPasswordTest: unmasked range 3-6 #4");
+
+  editor.unmask(2, 4);
+  checkRange(0, 6, `${kMask}${kMask}cd${kMask}${kMask}`,
+             "runQueryPasswordTest: unmasked range 3-4 #1");
+  checkRange(1, 2, `${kMask}c`,
+             "runQueryPasswordTest: unmasked range 3-4 #2");
+  checkRange(1, 3, `${kMask}cd`,
+             "runQueryPasswordTest: unmasked range 3-4 #3");
+  checkRange(1, 4, `${kMask}cd${kMask}`,
+             "runQueryPasswordTest: unmasked range 3-4 #4");
+  checkRange(2, 2, "cd",
+             "runQueryPasswordTest: unmasked range 3-4 #5");
+  checkRange(2, 3, `cd${kMask}`,
+             "runQueryPasswordTest: unmasked range 3-4 #6");
+
+
+  const kEmoji = String.fromCodePoint(0x1f914);
+  password.value = `${kEmoji}${kEmoji}${kEmoji}`
+
+  editor.mask();
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range is not specified");
+
+  editor.unmask(0, 2);
+  checkRange(0, 6, `${kEmoji}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 0-2 #1");
+  checkRange(0, 2, `${kEmoji}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 0-2 #2");
+  checkRange(2, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 0-2 #3");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 0-2 #4");
+
+  editor.unmask(2, 4);
+  checkRange(0, 6, `${kMask}${kMask}${kEmoji}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 2-4 #1");
+  checkRange(0, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 2-4 #2");
+  checkRange(2, 2, `${kEmoji}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 2-4 #3");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 2-4 #4");
+
+  editor.unmask(4, 6);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kEmoji}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 4-6 #1");
+  checkRange(0, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 4-6 #2");
+  checkRange(2, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 4-6 #3");
+  checkRange(4, 2, `${kEmoji}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 4-6 #4");
+
+  editor.unmask(0, 1);
+  checkRange(0, 6, `${kEmoji}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 0-1");
+
+  editor.unmask(1, 2);
+  checkRange(0, 6, `${kEmoji}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 1-2");
+
+  editor.unmask(2, 3);
+  checkRange(0, 6, `${kMask}${kMask}${kEmoji}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 2-3");
+
+  editor.unmask(3, 4);
+  checkRange(0, 6, `${kMask}${kMask}${kEmoji}${kMask}${kMask}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 3-4");
+
+  editor.unmask(4, 5);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kEmoji}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 4-5");
+
+  editor.unmask(5, 6);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kEmoji}`,
+             "runQueryPasswordTest: Emojis in password, unmasked range 5-6");
+
+
+  const kEmojiSuperhero = String.fromCodePoint(0x1f9b8);
+  const kEmojiMediumSkinTone = String.fromCodePoint(0x1f3fd);
+  const kZeroWidthJoiner = "\u200d";
+  const kFemaleSign = "\u2640";
+  const kVariationSelector16 = "\ufe0f";
+  const kComplicatedEmoji = `${kEmojiSuperhero}${kEmojiMediumSkinTone}${kZeroWidthJoiner}${kFemaleSign}${kVariationSelector16}`;
+  password.value = `${kComplicatedEmoji}${kComplicatedEmoji}${kComplicatedEmoji}`
+  editor.mask();
+  checkRange(0, 21, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range is not specified");
+
+  editor.unmask(0, 7);
+  checkRange(0, 21, `${kComplicatedEmoji}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 0-7 #1");
+  checkRange(0, 7, `${kComplicatedEmoji}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 0-7 #2");
+  checkRange(7, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 0-7 #3");
+  checkRange(14, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 0-7 #4");
+
+  editor.unmask(7, 14);
+  checkRange(0, 21, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kComplicatedEmoji}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 7-14 #1");
+  checkRange(0, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 7-14 #2");
+  checkRange(7, 7, `${kComplicatedEmoji}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 7-14 #3");
+  checkRange(14, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 7-14 #4");
+
+  editor.unmask(14, 21);
+  checkRange(0, 21, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kComplicatedEmoji}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 14-21 #1");
+  checkRange(0, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 14-21 #2");
+  checkRange(7, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 14-21 #3");
+  checkRange(14, 7, `${kComplicatedEmoji}`,
+             "runQueryPasswordTest: Complicated emojis in password, unmasked range 14-21 #4");
+
+  password.value = `${kComplicatedEmoji}`
+  editor.unmask(0, 1);
+  checkRange(0, 7, `${kEmojiSuperhero}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 0-1");
+
+  editor.unmask(1, 2);
+  checkRange(0, 7, `${kEmojiSuperhero}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 1-2");
+
+  editor.unmask(2, 3);
+  checkRange(0, 7, `${kMask}${kMask}${kEmojiMediumSkinTone}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 2-3");
+
+  editor.unmask(3, 4);
+  checkRange(0, 7, `${kMask}${kMask}${kEmojiMediumSkinTone}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 3-4");
+
+  editor.unmask(4, 5);
+  checkRange(0, 7, `${kMask}${kMask}${kMask}${kMask}${kZeroWidthJoiner}${kMask}${kMask}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 4-5");
+
+  editor.unmask(5, 6);
+  checkRange(0, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kFemaleSign}${kMask}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 5-6");
+
+  editor.unmask(6, 7);
+  checkRange(0, 7, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kVariationSelector16}`,
+             "runQueryPasswordTest: Complicated emoji in password, unmasked range 6-7");
+
+
+  const kKanji = "\u8fba";
+  const kIVS = String.fromCodePoint(0xe0101);
+  const kKanjiWithIVS = `${kKanji}${kIVS}`;
+  password.value = `${kKanjiWithIVS}${kKanjiWithIVS}${kKanjiWithIVS}`
+
+  editor.mask();
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range is not specified");
+
+  editor.unmask(0, 3);
+  checkRange(0, 9, `${kKanjiWithIVS}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #1");
+  checkRange(0, 3, `${kKanjiWithIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #2");
+  checkRange(1, 3, `${kIVS}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #3");
+  checkRange(0, 1, `${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #4");
+  checkRange(1, 2, `${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #5");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #6");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #7");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #8");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #9");
+
+  editor.unmask(0, 1);
+  checkRange(0, 9, `${kKanji}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #1");
+  checkRange(0, 1, `${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #2");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #3");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #4");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #5");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #6");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-1 #7");
+
+  editor.unmask(1, 3);
+  checkRange(0, 9, `${kMask}${kIVS}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #1");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #2");
+  checkRange(1, 2, `${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #3");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #4");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #5");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #6");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-3 #7");
+
+  editor.unmask(3, 6);
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kKanjiWithIVS}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #1");
+  checkRange(3, 3, `${kKanjiWithIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #2");
+  checkRange(4, 3, `${kIVS}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #3");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #4");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #5");
+  checkRange(3, 1, `${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #6");
+  checkRange(4, 2, `${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #7");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #8");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-6 #9");
+
+  editor.unmask(3, 4);
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kKanji}${kMask}${kMask}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #1");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #2");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #3");
+  checkRange(3, 1, `${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #4");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #5");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #6");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-4 #7");
+
+  editor.unmask(4, 6);
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kMask}${kIVS}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #1");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #2");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #3");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #4");
+  checkRange(4, 2, `${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #5");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #6");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-6 #7");
+
+  editor.unmask(6, 9);
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kKanjiWithIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #1");
+  checkRange(6, 3, `${kKanjiWithIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #2");
+  checkRange(4, 3, `${kMask}${kMask}${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #3");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #4");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #5");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #6");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #7");
+  checkRange(6, 1, `${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #8");
+  checkRange(7, 2, `${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-9 #9");
+
+  editor.unmask(6, 7);
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kKanji}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #1");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #2");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #3");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #4");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #5");
+  checkRange(6, 1, `${kKanji}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #6");
+  checkRange(7, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 6-7 #7");
+
+  editor.unmask(7, 9);
+  checkRange(0, 9, `${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kMask}${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #1");
+  checkRange(0, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #2");
+  checkRange(1, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #3");
+  checkRange(3, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #4");
+  checkRange(4, 2, `${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #5");
+  checkRange(6, 1, `${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #6");
+  checkRange(7, 2, `${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 7-9 #7");
+
+  password.value = `${kKanjiWithIVS}${kKanjiWithIVS}`;
+  editor.unmask(0, 2);
+  checkRange(0, 6, `${kKanjiWithIVS}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 0-2");
+
+  editor.unmask(1, 2);
+  checkRange(0, 6, `${kMask}${kIVS}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 1-2");
+
+  editor.unmask(2, 3);
+  checkRange(0, 6, `${kMask}${kIVS}${kMask}${kMask}${kMask}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 2-3");
+
+  editor.unmask(3, 5);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kKanjiWithIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 3-5");
+
+  editor.unmask(4, 5);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 4-5");
+
+  editor.unmask(5, 6);
+  checkRange(0, 6, `${kMask}${kMask}${kMask}${kMask}${kIVS}`,
+             "runQueryPasswordTest: Pairs of Kanji and IVS in password, unmasked range 5-6");
+
+  editor.mask();
+}
+
+function runQueryContentEventRelativeToInsertionPoint()
+{
+  textarea.focus();
+  textarea.value = "0123456789";
+
+  // "[]0123456789"
+  let startOffset = textarea.selectionStart = textarea.selectionEnd = 0;
+  if (!checkContentRelativeToSelection(0, 1, 0, "0", "runQueryContentEventRelativeToInsertionPoint[0-0]", "#1") ||
+      !checkContentRelativeToSelection(-1, 1, 0, "0", "runQueryContentEventRelativeToInsertionPoint[0-0]", "#2") ||
+      !checkContentRelativeToSelection(1, 1, 1, "1", "runQueryContentEventRelativeToInsertionPoint[0-0]", "#3") ||
+      !checkContentRelativeToSelection(5, 10, 5, "56789", "runQueryContentEventRelativeToInsertionPoint[0-0]", "#4") ||
+      !checkContentRelativeToSelection(10, 1, 10, "", "runQueryContentEventRelativeToInsertionPoint[0-0]", "#5")) {
+    return;
+  }
+
+  // "[01234]56789"
+  textarea.selectionEnd = 5;
+  if (!checkContentRelativeToSelection(0, 1, 0, "0", "runQueryContentEventRelativeToInsertionPoint[0-5]", "#1") ||
+      !checkContentRelativeToSelection(-1, 1, 0, "0", "runQueryContentEventRelativeToInsertionPoint[0-5]", "#2") ||
+      !checkContentRelativeToSelection(1, 1, 1, "1", "runQueryContentEventRelativeToInsertionPoint[0-5]", "#3") ||
+      !checkContentRelativeToSelection(5, 10, 5, "56789", "runQueryContentEventRelativeToInsertionPoint[0-5]", "#4") ||
+      !checkContentRelativeToSelection(10, 1, 10, "", "runQueryContentEventRelativeToInsertionPoint[0-5]", "#5")) {
+    return;
+  }
+
+  // "0123[]456789"
+  startOffset = textarea.selectionStart = textarea.selectionEnd = 4;
+  if (!checkContentRelativeToSelection(0, 1, startOffset + 0, "4", "runQueryContentEventRelativeToInsertionPoint[4-4]", "#1") ||
+      !checkContentRelativeToSelection(-1, 1, startOffset - 1, "3", "runQueryContentEventRelativeToInsertionPoint[4-4]", "#2") ||
+      !checkContentRelativeToSelection(1, 1, startOffset + 1, "5", "runQueryContentEventRelativeToInsertionPoint[4-4]", "#3") ||
+      !checkContentRelativeToSelection(5, 10, startOffset + 5, "9", "runQueryContentEventRelativeToInsertionPoint[4-4]", "#4") ||
+      !checkContentRelativeToSelection(10, 1, 10, "", "runQueryContentEventRelativeToInsertionPoint[4-4]", "#5")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "a",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+  // "0123[a]456789"
+  if (!checkContentRelativeToSelection(0, 1, startOffset + 0, "a", "runQueryContentEventRelativeToInsertionPoint[composition at 4]", "#1") ||
+      !checkContentRelativeToSelection(-1, 1, startOffset - 1, "3", "runQueryContentEventRelativeToInsertionPoint[composition at 4]", "#2") ||
+      !checkContentRelativeToSelection(1, 1, startOffset + 1, "4", "runQueryContentEventRelativeToInsertionPoint[composition at 4]", "#3") ||
+      !checkContentRelativeToSelection(5, 10, startOffset + 5, "89", "runQueryContentEventRelativeToInsertionPoint[composition at 4]", "#4") ||
+      !checkContentRelativeToSelection(11, 1, 11, "", "runQueryContentEventRelativeToInsertionPoint[composition at 4]")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommitasis" });
+
+  // Move start of composition at first compositionupdate event.
+  function onCompositionUpdate(aEvent)
+  {
+    startOffset = textarea.selectionStart = textarea.selectionEnd = textarea.selectionStart - 1;
+    textarea.removeEventListener("compositionupdate", onCompositionUpdate);
+  }
+  textarea.addEventListener("compositionupdate", onCompositionUpdate);
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "b",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+  // "0123[b]a456789"
+  if (!checkContentRelativeToSelection(0, 1, startOffset + 0, "b", "runQueryContentEventRelativeToInsertionPoint[composition at 3]", "#1") ||
+      !checkContentRelativeToSelection(-1, 1, startOffset - 1, "3", "runQueryContentEventRelativeToInsertionPoint[composition at 3]", "#2") ||
+      !checkContentRelativeToSelection(1, 1, startOffset + 1, "a", "runQueryContentEventRelativeToInsertionPoint[composition at 3]", "#3") ||
+      !checkContentRelativeToSelection(5, 10, startOffset + 5, "789", "runQueryContentEventRelativeToInsertionPoint[composition at 3]", "#4") ||
+      !checkContentRelativeToSelection(12, 1, 12, "", "runQueryContentEventRelativeToInsertionPoint[composition at 3]", "#5")) {
+    synthesizeComposition({ type: "compositioncommitasis" });
+    return;
+  }
+
+  synthesizeComposition({ type: "compositioncommitasis" });
+}
+
+function runBug1375825Test()
+{
+  contenteditable.focus();
+
+  // #1
+  contenteditable.innerHTML = "abc<span contenteditable=\"false\">defgh</span>";
+
+  let ret = synthesizeQueryTextRect(2, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #1 (2, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "c", "runBug1375825Test #1 (2, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'c'");
+
+  ret = synthesizeQueryTextRect(3, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #1 (3, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "d", "runBug1375825Test #1 (3, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'd'");
+
+  ret = synthesizeQueryTextRect(4, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #1 (4, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "e", "runBug1375825Test #1 (4, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'e'");
+
+  ret = synthesizeQueryTextRect(5, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #1 (5, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "f", "runBug1375825Test #1 (5, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'f'");
+
+  ret = synthesizeQueryTextRect(6, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #1 (6, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "g", "runBug1375825Test #1 (6, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'g'");
+
+  ret = synthesizeQueryTextRect(7, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #1 (7, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "h", "runBug1375825Test #1 (7, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'h'");
+
+  // #2
+  contenteditable.innerHTML = "abc<span style=\"user-select: all;\">defgh</span>";
+
+  ret = synthesizeQueryTextRect(2, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #2 (2, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "c", "runBug1375825Test #2 (2, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'c'");
+
+  ret = synthesizeQueryTextRect(3, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #2 (3, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "d", "runBug1375825Test #2 (3, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'd'");
+
+  ret = synthesizeQueryTextRect(4, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #2 (4, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "e", "runBug1375825Test #2 (4, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'e'");
+
+  ret = synthesizeQueryTextRect(5, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #2 (5, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "f", "runBug1375825Test #2 (5, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'f'");
+
+  ret = synthesizeQueryTextRect(6, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #2 (6, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "g", "runBug1375825Test #2 (6, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'g'");
+
+  ret = synthesizeQueryTextRect(7, 1);
+  if (!checkQueryContentResult(ret, "runBug1375825Test #2 (7, 1), \"" + contenteditable.innerHTML + "\"")) {
+    return;
+  }
+  is(ret.text, "h", "runBug1375825Test #2 (7, 1), \"" + contenteditable.innerHTML + "\": should have queried a rect for 'h'");
+}
+
+function runBug1530649Test()
+{
+  // Vietnamese IME on macOS commits composition with typing space key.
+  // Then, typing new word shouldn't trim the trailing whitespace.
+  contenteditable.focus();
+  contenteditable.innerHTML = "";
+  synthesizeCompositionChange(
+    {composition: {string: "abc", clauses: [{length: 3, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+     caret: {start: 3, length: 0}});
+  synthesizeComposition({type: "compositioncommit", data: "abc ", key: " "});
+
+  is(contenteditable.innerHTML, "abc <br>",
+     "runBug1530649Test: The trailing space shouldn't be removed");
+
+  synthesizeCompositionChange(
+    {composition: {string: "d", clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+     caret: {start: 1, length: 0}});
+
+  is(contenteditable.innerHTML, "abc d<br>",
+     "runBug1530649Test: The new composition string shouldn't remove the last space");
+
+  synthesizeComposition({type: "compositioncommitasis", key: "KEY_Enter"});
+
+  is(contenteditable.innerHTML, "abc d<br>",
+     "runBug1530649Test: Committing the new composition string shouldn't remove the last space");
+}
+
+function runBug1571375Test()
+{
+  let selection = windowOfContenteditableBySpan.getSelection();
+  let doc = document.getElementById("iframe7").contentDocument;
+
+  contenteditableBySpan.focus();
+
+  contenteditableBySpan.innerHTML = "hello world";
+  let range = doc.createRange();
+  range.setStart(contenteditableBySpan.firstChild, 6);
+  range.setEnd(contenteditableBySpan.firstChild, 11);
+  selection.removeAllRanges();
+  selection.addRange(range);
+
+  synthesizeCompositionChange({
+    composition: {string: "world", clauses: [{length: 5, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+    caret: { start: 5, length: 0 },
+  });
+  synthesizeComposition({type: "compositioncommit", data: "world", key: " "});
+  is(contenteditableBySpan.innerHTML, "hello world",
+     "runBug1571375Test: space must not be removed by commit");
+
+  contenteditableBySpan.innerHTML = "hello world";
+  range = doc.createRange();
+  range.setStart(contenteditableBySpan.firstChild, 0);
+  range.setEnd(contenteditableBySpan.firstChild, 5);
+  selection.removeAllRanges();
+  selection.addRange(range);
+
+  synthesizeCompositionChange({
+    composition: {string: "hello", clauses: [{length: 5, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+    caret: { start: 5, length: 0 },
+  });
+  synthesizeComposition({type: "compositioncommit", data: "hello", key: " "});
+  is(contenteditableBySpan.innerHTML, "hello world",
+     "runBug1571375Test: space must not be removed by commit");
+
+  contenteditableBySpan.innerHTML = "hello world<div>.</div>";
+  range = doc.createRange();
+  range.setStart(contenteditableBySpan.firstChild, 6);
+  range.setEnd(contenteditableBySpan.firstChild, 11);
+  selection.removeAllRanges();
+  selection.addRange(range);
+
+  synthesizeCompositionChange({
+    composition: {string: "world", clauses: [{length: 5, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+    caret: {start: 0, length: 0}}
+  );
+  synthesizeComposition({type: "compositioncommit", data: "world", key: " "});
+  is(contenteditableBySpan.innerHTML, "hello world<div>.</div>",
+     "runBug1571375Test: space must not be removed by commit");
+}
+
+async function runBug1584901Test()
+{
+  contenteditableBySpan.focus();
+  contenteditableBySpan.innerHTML = "";
+
+  // XXX synthesizeCompositionChange won't work without wait.
+  await waitForTick();
+
+  synthesizeCompositionChange({
+    composition: {string: "a ", clauses: [{length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+  synthesizeComposition({type: "compositioncommitasis", key: " "});
+
+  is(contenteditableBySpan.innerHTML, "a&nbsp;",
+     "runBug1584901Test: space must not be removed by composition change");
+
+  synthesizeCompositionChange({
+    composition: {string: "b ", clauses: [{length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+  synthesizeComposition({type: "compositioncommitasis", key: " "});
+
+  is(contenteditableBySpan.innerHTML, "a b&nbsp;",
+     "runBug1584901Test: space must not be removed by composition change");
+}
+
+function runBug1675313Test()
+{
+  input.value = "";
+  input.focus();
+  let count = 0;
+
+  function handler() {
+    input.focus();
+    count++;
+  }
+
+  input.addEventListener("keydown", handler);
+  input.addEventListener("keyup", handler);
+
+  synthesizeCompositionChange({
+    composition: {
+      string: "a",
+      clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}],
+      key: { key: "a", type: "keyup" },
+    },
+  });
+  synthesizeCompositionChange({
+    composition: {
+      string: "b",
+      clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}],
+      key: { key: "b", type: "keyup" },
+    },
+  });
+  synthesizeComposition({type: "compositioncommitasis"});
+
+  is(count, 6, "runBug1675313Test: keydown event and keyup event are fired correctly");
+  is(input.value, "b",
+     "runBug1675313Test: re-focus element doesn't commit composition if re-focus isn't click by user");
+
+  input.removeEventListener("keyup", handler);
+}
+
+function runCommitCompositionWithSpaceKey()
+{
+  contenteditable.focus();
+  contenteditable.innerHTML = "";
+
+  // Last white space might be &nbsp; if last child is no <br>
+  // Actually, our implementation will insert <br> element at last child, so
+  // white space will be ASCII space.
+
+  synthesizeCompositionChange({
+    composition: {string: "a", clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+  synthesizeComposition({type: "compositioncommit", data: "a"});
+  synthesizeKey(" ");
+
+  is(contenteditable.innerHTML, "a <br>",
+     "runCommitCompositionWithSpaceKey: last single space should be kept");
+
+  synthesizeCompositionChange({
+    composition: {string: "b", clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+  synthesizeComposition({type: "compositioncommit", data: "b"});
+  synthesizeKey(" ");
+
+  is(contenteditable.innerHTML, "a b <br>",
+     "runCommitCompositionWithSpaceKey: inserting composition shouldn't remove last single space.");
+
+  synthesizeCompositionChange({
+    composition: {string: "c", clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+  synthesizeComposition({type: "compositioncommit", data: "c"});
+  synthesizeKey(" ");
+
+  is(contenteditable.innerHTML, "a b c <br>",
+     "runCommitCompositionWithSpaceKey: inserting composition shouldn't remove last single space.");
+
+  contenteditable.innerHTML = "a";
+  windowOfContenteditable.getSelection().collapse(contenteditable.firstChild, contenteditable.firstChild.length);
+  is(contenteditable.innerHTML, "a",
+     "runCommitCompositionWithSpaceKey: contenteditable should be initialized with text ending with a space and without following <br> element");
+
+  synthesizeCompositionChange({
+    composition: {string: "b", clauses: [{length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+  synthesizeComposition({type: "compositioncommit", data: "b ", key: { key: " ", code: "Space" }});
+
+  is(contenteditable.innerHTML, "ab <br>",
+     "runCommitCompositionWithSpaceKey: contenteditable should end with a padding <br> element after inserting commit string ending with a space");
+}
+
+function runCSSTransformTest()
+{
+  textarea.focus();
+  textarea.value = "some text";
+  textarea.selectionStart = textarea.selectionEnd = textarea.value.length;
+  let editorRect = synthesizeQueryEditorRect();
+  if (!checkQueryContentResult(editorRect,
+        "runCSSTransformTest: editorRect")) {
+    return;
+  }
+  let firstCharRect = synthesizeQueryTextRect(0, 1);
+  if (!checkQueryContentResult(firstCharRect,
+        "runCSSTransformTest: firstCharRect")) {
+    return;
+  }
+  let lastCharRect = synthesizeQueryTextRect(textarea.value.length - 1, textarea.value.length);
+  if (!checkQueryContentResult(lastCharRect,
+        "runCSSTransformTest: lastCharRect")) {
+    return;
+  }
+  let caretRect = synthesizeQueryCaretRect(textarea.selectionStart);
+  if (!checkQueryContentResult(caretRect,
+        "runCSSTransformTest: caretRect")) {
+    return;
+  }
+  let caretRectBeforeFirstChar = synthesizeQueryCaretRect(0);
+  if (!checkQueryContentResult(caretRectBeforeFirstChar,
+        "runCSSTransformTest: caretRectBeforeFirstChar")) {
+    return;
+  }
+
+  try {
+    textarea.style.transform = "translate(10px, 15px)";
+    function movedRect(aRect, aCSS_CX, aCSS_CY)
+    {
+      return {
+        left: aRect.left + Math.round(aCSS_CX * window.devicePixelRatio),
+        top: aRect.top + Math.round(aCSS_CY * window.devicePixelRatio),
+        width: aRect.width,
+        height: aRect.height
+      };
+    }
+
+    let editorRectTranslated = synthesizeQueryEditorRect();
+    if (!checkQueryContentResult(editorRectTranslated,
+          "runCSSTransformTest: editorRectTranslated, " + textarea.style.transform) ||
+        !checkRectFuzzy(editorRectTranslated, movedRect(editorRect, 10, 15), {left: 1, top: 1, width: 1, height: 1},
+          "runCSSTransformTest: editorRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    let firstCharRectTranslated = synthesizeQueryTextRect(0, 1);
+    if (!checkQueryContentResult(firstCharRectTranslated,
+          "runCSSTransformTest: firstCharRectTranslated, " + textarea.style.transform) ||
+        !checkRectFuzzy(firstCharRectTranslated, movedRect(firstCharRect, 10, 15), {left: 1, top: 1, width: 1, height: 1},
+          "runCSSTransformTest: firstCharRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    let lastCharRectTranslated = synthesizeQueryTextRect(textarea.value.length - 1, textarea.value.length);
+    if (!checkQueryContentResult(lastCharRectTranslated,
+          "runCSSTransformTest: lastCharRectTranslated, " + textarea.style.transform) ||
+        !checkRectFuzzy(lastCharRectTranslated, movedRect(lastCharRect, 10, 15), {left: 1, top: 1, width: 1, height: 1},
+          "runCSSTransformTest: lastCharRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    let caretRectTranslated = synthesizeQueryCaretRect(textarea.selectionStart);
+    if (!checkQueryContentResult(caretRectTranslated,
+          "runCSSTransformTest: caretRectTranslated, " + textarea.style.transform) ||
+        !checkRectFuzzy(caretRectTranslated, movedRect(caretRect, 10, 15), {left: 1, top: 1, width: 1, height: 1},
+          "runCSSTransformTest: caretRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    let caretRectBeforeFirstCharTranslated = synthesizeQueryCaretRect(0);
+    if (!checkQueryContentResult(caretRectBeforeFirstCharTranslated,
+          "runCSSTransformTest: caretRectBeforeFirstCharTranslated, " + textarea.style.transform) ||
+        !checkRectFuzzy(caretRectBeforeFirstCharTranslated, movedRect(caretRectBeforeFirstChar, 10, 15), {left: 1, top: 1, width: 1, height: 1},
+          "runCSSTransformTest: caretRectBeforeFirstCharTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    let firstCharRectTranslatedAsArray = synthesizeQueryTextRectArray(0, 1);
+    if (!checkQueryContentResult(firstCharRectTranslatedAsArray, "runCSSTransformTest: firstCharRectTranslatedAsArray, " + textarea.style.transform) ||
+        !checkRectArray(firstCharRectTranslatedAsArray, [firstCharRectTranslated], "runCSSTransformTest: firstCharRectTranslatedAsArray, " + textarea.style.transform)) {
+      return;
+    }
+    let lastCharRectTranslatedAsArray = synthesizeQueryTextRectArray(textarea.value.length - 1, textarea.value.length);
+    if (!checkQueryContentResult(lastCharRectTranslatedAsArray, "runCSSTransformTest: lastCharRectTranslatedAsArray, " + textarea.style.transform) ||
+        !checkRectArray(lastCharRectTranslatedAsArray, [lastCharRectTranslated], "runCSSTransformTest: lastCharRectTranslatedAsArray, " + textarea.style.transform)) {
+      return;
+    }
+
+    // XXX It's too difficult to check the result with scale and rotate...
+    //     For now, let's check if query text rect and query text rect array returns same rect.
+    textarea.style.transform = "scale(1.5)";
+    firstCharRectTranslated = synthesizeQueryTextRect(0, 1);
+    if (!checkQueryContentResult(firstCharRectTranslated,
+          "runCSSTransformTest: firstCharRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    lastCharRectTranslated = synthesizeQueryTextRect(textarea.value.length - 1, textarea.value.length);
+    if (!checkQueryContentResult(lastCharRectTranslated,
+          "runCSSTransformTest: lastCharRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    firstCharRectTranslatedAsArray = synthesizeQueryTextRectArray(0, 1);
+    if (!checkQueryContentResult(firstCharRectTranslatedAsArray, "runCSSTransformTest: firstCharRectTranslatedAsArray, " + textarea.style.transform) ||
+        !checkRectArray(firstCharRectTranslatedAsArray, [firstCharRectTranslated], "runCSSTransformTest: firstCharRectTranslatedAsArray, " + textarea.style.transform)) {
+      return;
+    }
+    lastCharRectTranslatedAsArray = synthesizeQueryTextRectArray(textarea.value.length - 1, textarea.value.length);
+    if (!checkQueryContentResult(lastCharRectTranslatedAsArray, "runCSSTransformTest: lastCharRectTranslatedAsArray, " + textarea.style.transform) ||
+        !checkRectArray(lastCharRectTranslatedAsArray, [lastCharRectTranslated], "runCSSTransformTest: lastCharRectTranslatedAsArray, " + textarea.style.transform)) {
+      return;
+    }
+
+    textarea.style.transform = "rotate(30deg)";
+    firstCharRectTranslated = synthesizeQueryTextRect(0, 1);
+    if (!checkQueryContentResult(firstCharRectTranslated,
+          "runCSSTransformTest: firstCharRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    lastCharRectTranslated = synthesizeQueryTextRect(textarea.value.length - 1, textarea.value.length);
+    if (!checkQueryContentResult(lastCharRectTranslated,
+          "runCSSTransformTest: lastCharRectTranslated, " + textarea.style.transform)) {
+      return;
+    }
+    firstCharRectTranslatedAsArray = synthesizeQueryTextRectArray(0, 1);
+    if (!checkQueryContentResult(firstCharRectTranslatedAsArray, "runCSSTransformTest: firstCharRectTranslatedAsArray, " + textarea.style.transform) ||
+        !checkRectArray(firstCharRectTranslatedAsArray, [firstCharRectTranslated], "runCSSTransformTest: firstCharRectTranslatedAsArray, " + textarea.style.transform)) {
+      return;
+    }
+    lastCharRectTranslatedAsArray = synthesizeQueryTextRectArray(textarea.value.length - 1, textarea.value.length);
+    checkQueryContentResult(lastCharRectTranslatedAsArray, "runCSSTransformTest: lastCharRectTranslatedAsArray, " + textarea.style.transform);
+    checkRectArray(lastCharRectTranslatedAsArray, [lastCharRectTranslated], "runCSSTransformTest: lastCharRectTranslatedAsArray, " + textarea.style.transform);
+  } finally {
+    textarea.style.transform = "";
+  }
+}
+
+function runBug722639Test()
+{
+  textarea.focus();
+  textarea.value = "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
+  textarea.value += textarea.value;
+  textarea.value += textarea.value; // 80 characters
+
+  let firstLine = synthesizeQueryTextRect(0, 1);
+  if (!checkQueryContentResult(firstLine,
+        "runBug722639Test: firstLine")) {
+    return;
+  }
+  ok(true, "runBug722639Test: 1st line, top=" + firstLine.top + ", left=" + firstLine.left);
+  let firstLineAsArray = synthesizeQueryTextRectArray(0, 1);
+  if (!checkQueryContentResult(firstLineAsArray, "runBug722639Test: 1st line as array") ||
+      !checkRectArray(firstLineAsArray, [firstLine], "runBug722639Test: 1st line as array should match with text rect result")) {
+    return;
+  }
+  if (kLFLen > 1) {
+    let firstLineLF = synthesizeQueryTextRect(1, 1);
+    if (!checkQueryContentResult(firstLineLF,
+          "runBug722639Test: firstLineLF")) {
+      return;
+    }
+    is(firstLineLF.top, firstLine.top, "runBug722639Test: 1st line's \\n rect should be same as 1st line's \\r rect");
+    is(firstLineLF.left, firstLine.left, "runBug722639Test: 1st line's \\n rect should be same as 1st line's \\r rect");
+    isfuzzy(firstLineLF.height, firstLine.height, 1,
+            "runBug722639Test: 1st line's \\n rect should be same as 1st line's \\r rect");
+    is(firstLineLF.width, firstLine.width, "runBug722639Test: 1st line's \\n rect should be same as 1st line's \\r rect");
+    let firstLineLFAsArray = synthesizeQueryTextRectArray(1, 1);
+    if (!checkQueryContentResult(firstLineLFAsArray, "runBug722639Test: 1st line's \\n rect as array") ||
+        !checkRectArray(firstLineLFAsArray, [firstLineLF], "runBug722639Test: 1st line's rect as array should match with text rect result")) {
+      return;
+    }
+  }
+  let secondLine = synthesizeQueryTextRect(kLFLen, 1);
+  if (!checkQueryContentResult(secondLine,
+        "runBug722639Test: secondLine")) {
+    return;
+  }
+  ok(true, "runBug722639Test: 2nd line, top=" + secondLine.top + ", left=" + secondLine.left);
+  let secondLineAsArray = synthesizeQueryTextRectArray(kLFLen, 1);
+  if (!checkQueryContentResult(secondLineAsArray, "runBug722639Test: 2nd line as array") ||
+      !checkRectArray(secondLineAsArray, [secondLine], "runBug722639Test: 2nd line as array should match with text rect result")) {
+    return;
+  }
+  if (kLFLen > 1) {
+    let secondLineLF = synthesizeQueryTextRect(kLFLen + 1, 1);
+    if (!checkQueryContentResult(secondLineLF,
+          "runBug722639Test: secondLineLF")) {
+      return;
+    }
+    is(secondLineLF.top, secondLine.top, "runBug722639Test: 2nd line's \\n rect should be same as 2nd line's \\r rect");
+    is(secondLineLF.left, secondLine.left, "runBug722639Test: 2nd line's \\n rect should be same as 2nd line's \\r rect");
+    isfuzzy(secondLineLF.height, secondLine.height, 1,
+            "runBug722639Test: 2nd line's \\n rect should be same as 2nd line's \\r rect");
+    is(secondLineLF.width, secondLine.width, "runBug722639Test: 2nd line's \\n rect should be same as 2nd line's \\r rect");
+    let secondLineLFAsArray = synthesizeQueryTextRectArray(kLFLen + 1, 1);
+    if (!checkQueryContentResult(secondLineLFAsArray, "runBug722639Test: 2nd line's \\n rect as array") ||
+        !checkRectArray(secondLineLFAsArray, [secondLineLF], "runBug722639Test: 2nd line's rect as array should match with text rect result")) {
+      return;
+    }
+  }
+  let lineHeight = secondLine.top -  firstLine.top;
+  ok(lineHeight > 0,
+     "runBug722639Test: lineHeight must be positive");
+  is(secondLine.left, firstLine.left,
+     "runBug722639Test: the left value must be always same value");
+  isfuzzy(secondLine.height, firstLine.height, 1,
+     "runBug722639Test: the height must be always same value");
+  let previousTop = secondLine.top;
+  for (let i = 3; i <= textarea.value.length + 1; i++) {
+    let currentLine = synthesizeQueryTextRect(kLFLen * (i - 1), 1);
+    if (!checkQueryContentResult(currentLine,
+           "runBug722639Test: " + i + "th currentLine")) {
+      return;
+    }
+    ok(true, "runBug722639Test: " + i + "th line, top=" + currentLine.top + ", left=" + currentLine.left);
+    let currentLineAsArray = synthesizeQueryTextRectArray(kLFLen * (i - 1), 1);
+    if (!checkQueryContentResult(currentLineAsArray, "runBug722639Test: " + i + "th line as array") ||
+        !checkRectArray(currentLineAsArray, [currentLine], "runBug722639Test: " + i + "th line as array should match with text rect result")) {
+      return;
+    }
+    // NOTE: the top position may be 1px larger or smaller than other lines
+    //       due to sub pixel positioning.
+    if (Math.abs(currentLine.top - (previousTop + lineHeight)) <= 1) {
+      ok(true, "runBug722639Test: " + i + "th line's top is expected");
+    } else {
+      is(currentLine.top, previousTop + lineHeight,
+         "runBug722639Test: " + i + "th line's top is unexpected");
+    }
+    is(currentLine.left, firstLine.left,
+       "runBug722639Test: " + i + "th line's left is unexpected");
+    isfuzzy(currentLine.height, firstLine.height, 1,
+            `runBug722639Test: ${i}th line's height is unexpected`);
+    if (kLFLen > 1) {
+      let currentLineLF = synthesizeQueryTextRect(kLFLen * (i - 1) + 1, 1);
+      if (!checkQueryContentResult(currentLineLF,
+            "runBug722639Test: " + i + "th currentLineLF")) {
+        return;
+      }
+      is(currentLineLF.top, currentLine.top, "runBug722639Test: " + i + "th line's \\n rect should be same as same line's \\r rect");
+      is(currentLineLF.left, currentLine.left, "runBug722639Test: " + i + "th line's \\n rect should be same as same line's \\r rect");
+      isfuzzy(currentLineLF.height, currentLine.height, 1,
+              `runBug722639Test: ${i}th line's \\n rect should be same as same line's \\r rect`);
+      is(currentLineLF.width, currentLine.width, "runBug722639Test: " + i + "th line's \\n rect should be same as same line's \\r rect");
+      let currentLineLFAsArray = synthesizeQueryTextRectArray(kLFLen * (i - 1) + 1, 1);
+      if (!checkQueryContentResult(currentLineLFAsArray, "runBug722639Test: " + i + "th line's \\n rect as array") ||
+          !checkRectArray(currentLineLFAsArray, [currentLineLF], "runBug722639Test: " + i + "th line's rect as array should match with text rect result")) {
+        return;
+      }
+    }
+    previousTop = currentLine.top;
+  }
+}
+
+function runCompositionWithSelectionChange() {
+  function doTest(aEditor, aDescription) {
+    aEditor.focus();
+    const isHTMLEditor =
+      aEditor.nodeName.toLowerCase() != "input" && aEditor.nodeName.toLowerCase() != "textarea";
+    const win = isHTMLEditor ? windowOfContenteditable : window;
+    function getValue() {
+      return isHTMLEditor ? aEditor.innerHTML : aEditor.value;
+    }
+    function setSelection(aStart, aLength) {
+      if (isHTMLEditor) {
+        win.getSelection().setBaseAndExtent(aEditor.firstChild, aStart, aEditor.firstChild, aStart + aLength);
+      } else {
+        aEditor.setSelectionRange(aStart, aStart + aLength);
+      }
+    }
+
+    if (isHTMLEditor) {
+      aEditor.innerHTML = "abcxyz";
+    } else {
+      aEditor.value = "abcxyz";
+    }
+    setSelection("abc".length, 0);
+
+    synthesizeCompositionChange({
+      composition: {
+        string: "1",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE}],
+        caret: { start: 1, length: 0 },
+      }
+    });
+
+    is(getValue(), "abc1xyz",
+      `${aDescription}: First composing character should be inserted middle of the text`);
+
+    aEditor.addEventListener("compositionupdate", () => {
+      setSelection("abc".length, "1".length);
+    }, {once: true});
+
+    synthesizeCompositionChange({
+      composition: {
+        string: "12",
+        clauses: [{ length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE}],
+        caret: { start: 2, length: 0 },
+      }
+    });
+
+    is(getValue(), "abc12xyz",
+      `${aDescription}: Only composition string should be updated even if selection range is updated by "compositionupdate" event listener`);
+
+    aEditor.addEventListener("compositionupdate", () => {
+      setSelection("abc1".length, "2d".length);
+    }, {once: true});
+
+    synthesizeCompositionChange({
+      composition: {
+        string: "123",
+        clauses: [{ length: 3, attr: COMPOSITION_ATTR_RAW_CLAUSE}],
+        caret: { start: 3, length: 0 },
+      }
+    });
+
+    is(getValue(), "abc123xyz",
+      `${aDescription}: Only composition string should be updated even if selection range wider than composition string is updated by "compositionupdate" event listener`);
+
+    aEditor.addEventListener("compositionupdate", () => {
+      setSelection("ab".length, "c123d".length);
+    }, {once: true});
+
+    synthesizeCompositionChange({
+      composition: {
+        string: "456",
+        clauses: [{ length: 3, attr: COMPOSITION_ATTR_RAW_CLAUSE}],
+        caret: { start: 3, length: 0 },
+      }
+    });
+
+    is(getValue(), "abc456xyz",
+      `${aDescription}: Only composition string should be updated even if selection range which covers all over the composition string is updated by "compositionupdate" event listener`);
+
+    aEditor.addEventListener("beforeinput", () => {
+      setSelection("abc456d".length, 0);
+    }, {once: true});
+
+    synthesizeComposition({ type: "compositioncommitasis" });
+
+    is(getValue(), "abc456xyz",
+      `${aDescription}: Only composition string should be updated when committing composition but selection is updated by "beforeinput" event listener`);
+    if (isHTMLEditor) {
+      is(win.getSelection().focusNode, aEditor.firstChild,
+        `${aDescription}: The focus node after composition should be the text node`);
+      is(win.getSelection().focusOffset, "abc456".length,
+        `${aDescription}: The focus offset after composition should be end of the composition string`);
+      is(win.getSelection().anchorNode, aEditor.firstChild,
+        `${aDescription}: The anchor node after composition should be the text node`);
+      is(win.getSelection().anchorOffset, "abc456".length,
+        `${aDescription}: The anchor offset after composition should be end of the composition string`);
+    } else {
+      is(aEditor.selectionStart, "abc456".length,
+        `${aDescription}: The selectionStart after composition should be end of the composition string`);
+      is(aEditor.selectionEnd, "abc456".length,
+        `${aDescription}: The selectionEnd after composition should be end of the composition string`);
+    }
+  }
+  doTest(textarea, "runCompositionWithSelectionChange(textarea)");
+  doTest(input, "runCompositionWithSelectionChange(input)");
+  doTest(contenteditable, "runCompositionWithSelectionChange(contenteditable)");
+}
+
+function runForceCommitTest()
+{
+  let events;
+  function eventHandler(aEvent)
+  {
+    events.push(aEvent);
+  }
+  window.addEventListener("compositionstart", eventHandler, true);
+  window.addEventListener("compositionupdate", eventHandler, true);
+  window.addEventListener("compositionend", eventHandler, true);
+  window.addEventListener("beforeinput", eventHandler, true);
+  window.addEventListener("input", eventHandler, true);
+  window.addEventListener("text", eventHandler, true);
+
+  // Make the composition in textarea commit by click in the textarea
+  textarea.focus();
+  textarea.value = "";
+
+  events = [];
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  is(events.length, 5,
+     "runForceCommitTest: wrong event count #1");
+  is(events[0].type, "compositionstart",
+     "runForceCommitTest: the 1st event must be compositionstart #1");
+  is(events[1].type, "compositionupdate",
+     "runForceCommitTest: the 2nd event must be compositionupdate #1");
+  is(events[2].type, "text",
+     "runForceCommitTest: the 3rd event must be text #1");
+  is(events[3].type, "beforeinput",
+     "runForceCommitTest: the 4th event must be beforeinput #1");
+  checkInputEvent(events[3], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #1");
+  is(events[4].type, "input",
+     "runForceCommitTest: the 5th event must be input #1");
+  checkInputEvent(events[4], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #1");
+
+  events = [];
+  synthesizeMouseAtCenter(textarea, {});
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #2");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #2");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #2`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #2");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #2`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #2");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #2");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #2`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #2");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #2");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #2`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #2");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #2");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #2");
+
+  // Make the composition in textarea commit by click in another editor (input)
+  textarea.focus();
+  textarea.value = "";
+  input.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  synthesizeMouseAtCenter(input, {});
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #3");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #3");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #3`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #3");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #3`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #3");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #3");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #3`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #3");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #3");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #3`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #3");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #3");
+  ok(!getEditor(input).isComposing,
+     "runForceCommitTest: the input has composition #3");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #3");
+  is(input.value, "",
+     "runForceCommitTest: the input has the committed text? #3");
+
+  // Make the composition in textarea commit by blur()
+  textarea.focus();
+  textarea.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  textarea.blur();
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #4");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #4");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #4`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #4");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #4`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #4");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #4");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #4`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #4");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #4");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #4`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #4");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #4");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #4");
+
+  // Make the composition in textarea commit by input.focus()
+  textarea.focus();
+  textarea.value = "";
+  input.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  input.focus();
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #5");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #5");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #5`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #5");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #5`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #5");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #5");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #5`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #5");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #5");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #5`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #5");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #5");
+  ok(!getEditor(input).isComposing,
+     "runForceCommitTest: the input has composition #5");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #5");
+  is(input.value, "",
+     "runForceCommitTest: the input has the committed text? #5");
+
+  // Make the composition in textarea commit by click in another document's editor
+  textarea.focus();
+  textarea.value = "";
+  textareaInFrame.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  synthesizeMouseAtCenter(textareaInFrame, {}, iframe.contentWindow);
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #6");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #6");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #6`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #6");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #6`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #6");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #6");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #6`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #6");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #6");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #6`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #6");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #6");
+  ok(!getEditor(textareaInFrame).isComposing,
+     "runForceCommitTest: the textarea in frame has composition #6");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #6");
+  is(textareaInFrame.value, "",
+     "runForceCommitTest: the textarea in frame has the committed text? #6");
+
+  // Make the composition in textarea commit by another document's editor's focus()
+  textarea.focus();
+  textarea.value = "";
+  textareaInFrame.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  textareaInFrame.focus();
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #7");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #7");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #7`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #7");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #7`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #7");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #7");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #7`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #7");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #7");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #7`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #7");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #7");
+  ok(!getEditor(textareaInFrame).isComposing,
+     "runForceCommitTest: the textarea in frame has composition #7");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #7");
+  is(textareaInFrame.value, "",
+     "runForceCommitTest: the textarea in frame has the committed text? #7");
+
+  // Make the composition in a textarea commit by click in another editable document
+  textarea.focus();
+  textarea.value = "";
+  iframe2.contentDocument.body.innerHTML = "Text in the Body";
+  let iframe2BodyInnerHTML = iframe2.contentDocument.body.innerHTML;
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  synthesizeMouseAtCenter(iframe2.contentDocument.body, {}, iframe2.contentWindow);
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #8");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #8");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The ${events[0].type} event was fired on wrong event target #8`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #8");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The ${events[1].type} event was fired on wrong event target #8`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #8");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #8");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The ${events[2].type} event was fired on wrong event target #8`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #8");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #8");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The ${events[3].type} event was fired on wrong event target #8`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #8");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #8");
+  ok(!getHTMLEditorIMESupport(iframe2.contentWindow).isComposing,
+     "runForceCommitTest: the editable document has composition #8");
+  is(textarea.value, "\u306E",
+     "runForceCommitTest: the textarea doesn't have the committed text #8");
+  is(iframe2.contentDocument.body.innerHTML, iframe2BodyInnerHTML,
+     "runForceCommitTest: the editable document has the committed text? #8");
+
+  // Make the composition in an editable document commit by click in it
+  iframe2.contentWindow.focus();
+  iframe2.contentDocument.body.innerHTML = "Text in the Body";
+  iframe2BodyInnerHTML = iframe2.contentDocument.body.innerHTML;
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    }, iframe2.contentWindow);
+
+  events = [];
+  synthesizeMouseAtCenter(iframe2.contentDocument.body, {}, iframe2.contentWindow);
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #9");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #9");
+  is(events[0].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #9`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #9");
+  is(events[1].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #9`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E",
+                  [{startContainer: iframe2.contentDocument.body.firstChild,
+                    startOffset: iframe2.contentDocument.body.firstChild.wholeText.indexOf("\u306E"),
+                    endContainer: iframe2.contentDocument.body.firstChild,
+                    endOffset: iframe2.contentDocument.body.firstChild.wholeText.indexOf("\u306E") + 1}],
+                  "runForceCommitTest #9");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #9");
+  is(events[2].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #9`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #9");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #9");
+  is(events[3].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #9`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #9");
+  ok(!getHTMLEditorIMESupport(iframe2.contentWindow).isComposing,
+     "runForceCommitTest: the editable document still has composition #9");
+  ok(iframe2.contentDocument.body.innerHTML != iframe2BodyInnerHTML &&
+     iframe2.contentDocument.body.innerHTML.includes("\u306E"),
+     "runForceCommitTest: the editable document doesn't have the committed text #9");
+
+  // Make the composition in an editable document commit by click in another document's editor
+  textarea.value = "";
+  iframe2.contentWindow.focus();
+  iframe2.contentDocument.body.innerHTML = "Text in the Body";
+  iframe2BodyInnerHTML = iframe2.contentDocument.body.innerHTML;
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    }, iframe2.contentWindow);
+
+  events = [];
+  synthesizeMouseAtCenter(textarea, {});
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #10");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #10");
+  is(events[0].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The ${events[0].type} event was fired on wrong event target #10`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #10");
+  is(events[1].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The ${events[1].type} event was fired on wrong event target #10`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E",
+                  [{startContainer: iframe2.contentDocument.body.firstChild,
+                    startOffset: iframe2.contentDocument.body.firstChild.wholeText.indexOf("\u306E"),
+                    endContainer: iframe2.contentDocument.body.firstChild,
+                    endOffset: iframe2.contentDocument.body.firstChild.wholeText.indexOf("\u306E") + 1}],
+                  "runForceCommitTest #10");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #10");
+  is(events[2].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The ${events[2].type} event was fired on wrong event target #10`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #10");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #10");
+  is(events[3].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The ${events[3].type} event was fired on wrong event target #10`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #10");
+  ok(!getHTMLEditorIMESupport(iframe2.contentWindow).isComposing,
+     "runForceCommitTest: the editable document still has composition #10");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea has composition #10");
+  ok(iframe2.contentDocument.body.innerHTML != iframe2BodyInnerHTML &&
+     iframe2.contentDocument.body.innerHTML.includes("\u306E"),
+     "runForceCommitTest: the editable document doesn't have the committed text #10");
+  is(textarea.value, "",
+     "runForceCommitTest: the textarea has the committed text? #10");
+
+  // Make the composition in an editable document commit by click in the another editable document
+  iframe2.contentWindow.focus();
+  iframe2.contentDocument.body.innerHTML = "Text in the Body";
+  iframe2BodyInnerHTML = iframe2.contentDocument.body.innerHTML;
+  iframe3.contentDocument.body.innerHTML = "Text in the Body";
+  let iframe3BodyInnerHTML = iframe2.contentDocument.body.innerHTML;
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    }, iframe2.contentWindow);
+
+  events = [];
+  synthesizeMouseAtCenter(iframe3.contentDocument.body, {}, iframe3.contentWindow);
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #11");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #11");
+  is(events[0].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #11`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #11");
+  is(events[1].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #11`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E",
+                  [{startContainer: iframe2.contentDocument.body.firstChild,
+                    startOffset: iframe2.contentDocument.body.firstChild.wholeText.indexOf("\u306E"),
+                    endContainer: iframe2.contentDocument.body.firstChild,
+                    endOffset: iframe2.contentDocument.body.firstChild.wholeText.indexOf("\u306E") + 1}],
+                  "runForceCommitTest #11");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #11");
+  is(events[2].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #11`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #11");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #11");
+  is(events[3].target, iframe2.contentDocument.body,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #11`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #11");
+  ok(!getHTMLEditorIMESupport(iframe2.contentWindow).isComposing,
+     "runForceCommitTest: the editable document still has composition #11");
+  ok(!getHTMLEditorIMESupport(iframe3.contentWindow).isComposing,
+     "runForceCommitTest: the other editable document has composition #11");
+  ok(iframe2.contentDocument.body.innerHTML != iframe2BodyInnerHTML &&
+     iframe2.contentDocument.body.innerHTML.includes("\u306E"),
+     "runForceCommitTest: the editable document doesn't have the committed text #11");
+  is(iframe3.contentDocument.body.innerHTML, iframe3BodyInnerHTML,
+     "runForceCommitTest: the other editable document has the committed text? #11");
+
+  input.focus();
+  input.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  input.value = "set value";
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #12");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #12");
+  is(events[0].target, input,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #12`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #12");
+  is(events[1].target, input,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #12`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #12");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #12");
+  is(events[2].target, input,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #12`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #12");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #12");
+  is(events[3].target, input,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #12`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #12");
+  ok(!getEditor(input).isComposing,
+     "runForceCommitTest: the input still has composition #12");
+  is(input.value, "set value",
+     "runForceCommitTest: the input doesn't have the set text #12");
+
+  textarea.focus();
+  textarea.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  textarea.value = "set value";
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #13");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #13");
+  is(events[0].target, textarea,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #13`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #13");
+  is(events[1].target, textarea,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #13`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #13");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #13");
+  is(events[2].target, textarea,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #13`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #13");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #13");
+  is(events[3].target, textarea,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #13`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #13");
+  ok(!getEditor(textarea).isComposing,
+     "runForceCommitTest: the textarea still has composition #13");
+  is(textarea.value, "set value",
+     "runForceCommitTest: the textarea doesn't have the set text #13");
+
+  input.focus();
+  input.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  input.value += " appended value";
+
+  is(events.length, 4,
+     "runForceCommitTest: wrong event count #14");
+  is(events[0].type, "text",
+     "runForceCommitTest: the 1st event must be text #14");
+  is(events[0].target, input,
+     `runForceCommitTest: The "${events[0].type}" event was fired on wrong event target #14`);
+  is(events[1].type, "beforeinput",
+     "runForceCommitTest: the 2nd event must be beforeinput #14");
+  is(events[1].target, input,
+     `runForceCommitTest: The "${events[1].type}" event was fired on wrong event target #14`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #14");
+  is(events[2].type, "compositionend",
+     "runForceCommitTest: the 3rd event must be compositionend #14");
+  is(events[2].target, input,
+     `runForceCommitTest: The "${events[2].type}" event was fired on wrong event target #14`);
+  is(events[2].data, "\u306E",
+     "runForceCommitTest: compositionend has wrong data #14");
+  is(events[3].type, "input",
+     "runForceCommitTest: the 4th event must be input #14");
+  is(events[3].target, input,
+     `runForceCommitTest: The "${events[3].type}" event was fired on wrong event target #14`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runForceCommitTest #14");
+  ok(!getEditor(input).isComposing,
+     "runForceCommitTest: the input still has composition #14");
+  is(input.value, "\u306E appended value",
+     "runForceCommitTest: the input should have both composed text and appended text #14");
+
+  input.focus();
+  input.value = "abcd";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  input.value = "abcd\u306E";
+
+  is(events.length, 0,
+     "runForceCommitTest: setting same value to input with composition shouldn't cause any events #15");
+  is(input.value, "abcd\u306E",
+     "runForceCommitTest: the input has unexpected value #15");
+
+  input.blur(); // commit composition
+
+  textarea.focus();
+  textarea.value = "abcd";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  textarea.value = "abcd\u306E";
+
+  is(events.length, 0,
+     "runForceCommitTest: setting same value to textarea with composition shouldn't cause any events #16");
+  is(textarea.value, "abcd\u306E",
+     "runForceCommitTest: the input has unexpected value #16");
+
+  textarea.blur(); // commit composition
+
+  window.removeEventListener("compositionstart", eventHandler, true);
+  window.removeEventListener("compositionupdate", eventHandler, true);
+  window.removeEventListener("compositionend", eventHandler, true);
+  window.removeEventListener("beforeinput", eventHandler, true);
+  window.removeEventListener("input", eventHandler, true);
+  window.removeEventListener("text", eventHandler, true);
+}
+
+function runNestedSettingValue()
+{
+  let isTesting = false;
+  let events = [];
+  function eventHandler(aEvent)
+  {
+    events.push(aEvent);
+    if (isTesting) {
+      aEvent.target.value += aEvent.type + ", ";
+    }
+  }
+  window.addEventListener("compositionstart", eventHandler, true);
+  window.addEventListener("compositionupdate", eventHandler, true);
+  window.addEventListener("compositionend", eventHandler, true);
+  window.addEventListener("beforeinput", eventHandler, true);
+  window.addEventListener("input", eventHandler, true);
+  window.addEventListener("text", eventHandler, true);
+
+  textarea.focus();
+  textarea.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  isTesting = true;
+  textarea.value = "first setting value, ";
+  isTesting = false;
+
+  is(events.length, 4,
+     "runNestedSettingValue: wrong event count #1");
+  is(events[0].type, "text",
+     "runNestedSettingValue: the 1st event must be text #1");
+  is(events[0].target, textarea,
+     `runNestedSettingValue: The "${events[0].type}" event was fired on wrong event target #1`);
+  is(events[1].type, "beforeinput",
+     "runNestedSettingValue: the 2nd event must be beforeinput #1");
+  is(events[1].target, textarea,
+     `runNestedSettingValue: The "${events[1].type}" event was fired on wrong event target #1`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #1");
+  is(events[2].type, "compositionend",
+     "runNestedSettingValue: the 3rd event must be compositionend #1");
+  is(events[2].target, textarea,
+     `runNestedSettingValue: The "${events[2].type}" event was fired on wrong event target #1`);
+  is(events[2].data, "\u306E",
+     "runNestedSettingValue: compositionend has wrong data #1");
+  is(events[3].type, "input",
+     "runNestedSettingValue: the 4th event must be input #1");
+  is(events[3].target, textarea,
+     `runNestedSettingValue: The "${events[3].type}" event was fired on wrong event target #1`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #1");
+  ok(!getEditor(textarea).isComposing,
+     "runNestedSettingValue: the textarea still has composition #1");
+  is(textarea.value, "first setting value, text, beforeinput, compositionend, input, ",
+     "runNestedSettingValue: the textarea should have all string set to value attribute");
+
+  input.focus();
+  input.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  isTesting = true;
+  input.value = "first setting value, ";
+  isTesting = false;
+
+  is(events.length, 4,
+     "runNestedSettingValue: wrong event count #2");
+  is(events[0].type, "text",
+     "runNestedSettingValue: the 1st event must be text #2");
+  is(events[0].target, input,
+     `runNestedSettingValue: The "${events[0].type}" event was fired on wrong event target #2`);
+  is(events[1].type, "beforeinput",
+     "runNestedSettingValue: the 2nd event must be beforeinput #2");
+  is(events[1].target, input,
+     `runNestedSettingValue: The "${events[1].type}" event was fired on wrong event target #2`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #2");
+  is(events[2].type, "compositionend",
+     "runNestedSettingValue: the 3rd event must be compositionend #2");
+  is(events[2].target, input,
+     `runNestedSettingValue: The "${events[2].type}" event was fired on wrong event target #2`);
+  is(events[2].data, "\u306E",
+     "runNestedSettingValue: compositionend has wrong data #2");
+  is(events[3].type, "input",
+     "runNestedSettingValue: the 4th event must be input #2");
+  is(events[3].target, input,
+     `runNestedSettingValue: The "${events[3].type}" event was fired on wrong event target #2`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #2");
+  ok(!getEditor(input).isComposing,
+     "runNestedSettingValue: the input still has composition #2");
+  is(textarea.value, "first setting value, text, beforeinput, compositionend, input, ",
+     "runNestedSettingValue: the input should have all string set to value attribute #2");
+
+  textarea.focus();
+  textarea.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  isTesting = true;
+  textarea.setRangeText("first setting value, ");
+  isTesting = false;
+
+  is(events.length, 4,
+     "runNestedSettingValue: wrong event count #3");
+  is(events[0].type, "text",
+     "runNestedSettingValue: the 1st event must be text #3");
+  is(events[0].target, textarea,
+     `runNestedSettingValue: The ${events[0].type} event was fired on wrong event target #3`);
+  is(events[1].type, "beforeinput",
+     "runNestedSettingValue: the 2nd event must be beforeinput #3");
+  is(events[1].target, textarea,
+     `runNestedSettingValue: The ${events[1].type} event was fired on wrong event target #3`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #3");
+  is(events[2].type, "compositionend",
+     "runNestedSettingValue: the 3rd event must be compositionend #3");
+  is(events[2].target, textarea,
+     `runNestedSettingValue: The ${events[2].type} event was fired on wrong event target #3`);
+  is(events[2].data, "\u306E",
+     "runNestedSettingValue: compositionend has wrong data #3");
+  is(events[3].type, "input",
+     "runNestedSettingValue: the 4th event must be input #3");
+  is(events[3].target, textarea,
+     `runNestedSettingValue: The ${events[3].type} event was fired on wrong event target #3`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #3");
+  ok(!getEditor(textarea).isComposing,
+     "runNestedSettingValue: the textarea still has composition #3");
+  is(textarea.value, "\u306Efirst setting value, text, beforeinput, compositionend, input, ",
+     "runNestedSettingValue: the textarea should have appended by setRangeText() and all string set to value attribute #3");
+
+  input.focus();
+  input.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  events = [];
+  isTesting = true;
+  input.setRangeText("first setting value, ");
+  isTesting = false;
+
+  is(events.length, 4,
+     "runNestedSettingValue: wrong event count #4");
+  is(events[0].type, "text",
+     "runNestedSettingValue: the 1st event must be text #4");
+  is(events[0].target, input,
+     `runNestedSettingValue: The "${events[0].type}" event was fired on wrong event target #4`);
+  is(events[1].type, "beforeinput",
+     "runNestedSettingValue: the 2nd event must be beforeinput #4");
+  is(events[1].target, input,
+     `runNestedSettingValue: The "${events[1].type}" event was fired on wrong event target #4`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #4");
+  is(events[2].type, "compositionend",
+     "runNestedSettingValue: the 3rd event must be compositionend #4");
+  is(events[2].target, input,
+     `runNestedSettingValue: The "${events[2].type}" event was fired on wrong event target #4`);
+  is(events[2].data, "\u306E",
+     "runNestedSettingValue: compositionend has wrong data #4");
+  is(events[3].type, "input",
+     "runNestedSettingValue: the 4th event must be input #4");
+  is(events[3].target, input,
+     `runNestedSettingValue: The "${events[3].type}" event was fired on wrong event target #4`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runNestedSettingValue #4");
+  ok(!getEditor(input).isComposing,
+     "runNestedSettingValue: the input still has composition #4");
+  is(textarea.value, "\u306Efirst setting value, text, beforeinput, compositionend, input, ",
+     "runNestedSettingValue: the input should have all string appended by setRangeText() and set to value attribute #4");
+
+  window.removeEventListener("compositionstart", eventHandler, true);
+  window.removeEventListener("compositionupdate", eventHandler, true);
+  window.removeEventListener("compositionend", eventHandler, true);
+  window.removeEventListener("beforeinput", eventHandler, true);
+  window.removeEventListener("input", eventHandler, true);
+  window.removeEventListener("text", eventHandler, true);
+
+}
+
+async function runAsyncForceCommitTest()
+{
+  let events;
+  function eventHandler(aEvent)
+  {
+    events.push(aEvent);
+  };
+
+  // If IME commits composition for a request, TextComposition commits
+  // composition automatically because most web apps must expect that active
+  // composition should be committed synchronously.  Therefore, in this case,
+  // a click during composition should cause committing composition
+  // synchronously and delayed commit shouldn't cause composition events.
+  let commitRequested = false;
+  let onFinishTest = null;
+  function callback(aTIP, aNotification)
+  {
+    ok(true, aNotification.type);
+    if (aNotification.type != "request-to-commit") {
+      return true;
+    }
+    commitRequested = true;
+    if (onFinishTest) {
+      let resolve = onFinishTest;
+      onFinishTest = null;
+
+      SimpleTest.executeSoon(() => {
+        events = [];
+        aTIP.commitComposition();
+
+        is(events.length, 0,
+           "runAsyncForceCommitTest: composition events shouldn't been fired by asynchronous call of nsITextInputProcessor.commitComposition()");
+
+        SimpleTest.executeSoon(resolve);
+      });
+    }
+    return true;
+  };
+
+  function promiseCleanUp() {
+    return new Promise(resolve => { onFinishTest = resolve; });
+  }
+
+  window.addEventListener("compositionstart", eventHandler, true);
+  window.addEventListener("compositionupdate", eventHandler, true);
+  window.addEventListener("compositionend", eventHandler, true);
+  window.addEventListener("beforeinput", eventHandler, true);
+  window.addEventListener("input", eventHandler, true);
+  window.addEventListener("text", eventHandler, true);
+
+  // Make the composition in textarea commit by click in the textarea
+  textarea.focus();
+  textarea.value = "";
+
+  events = [];
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    }, window, callback);
+
+  is(events.length, 5,
+     "runAsyncForceCommitTest: wrong event count #1");
+  is(events[0].type, "compositionstart",
+     "runAsyncForceCommitTest: the 1st event must be compositionstart #1");
+  is(events[1].type, "compositionupdate",
+     "runAsyncForceCommitTest: the 2nd event must be compositionupdate #1");
+  is(events[2].type, "text",
+     "runAsyncForceCommitTest: the 3rd event must be text #1");
+  is(events[3].type, "beforeinput",
+     "runAsyncForceCommitTest: the 4th event must be beforeinput #1");
+  checkInputEvent(events[3], true, "insertCompositionText", "\u306E", [],
+                  "runAsyncForceCommitTest #1");
+  is(events[4].type, "input",
+     "runAsyncForceCommitTest: the 5th event must be input #1");
+  checkInputEvent(events[4], true, "insertCompositionText", "\u306E", [],
+                  "runAsyncForceCommitTest #1");
+
+  events = [];
+  let waitCleanState = promiseCleanUp();
+
+  synthesizeMouseAtCenter(textarea, {});
+
+  ok(commitRequested,
+     "runAsyncForceCommitTest: \"request-to-commit\" should've been notified");
+  is(events.length, 4,
+     "runAsyncForceCommitTest: wrong event count #2");
+  is(events[0].type, "text",
+     "runAsyncForceCommitTest: the 1st event must be text #2");
+  is(events[0].target, textarea,
+     `runAsyncForceCommitTest: The "${events[0].type}" event was fired on wrong event target #2`);
+  is(events[1].type, "beforeinput",
+     "runAsyncForceCommitTest: the 2nd event must be beforeinput #2");
+  is(events[1].target, textarea,
+     `runAsyncForceCommitTest: The "${events[1].type}" event was fired on wrong event target #2`);
+  checkInputEvent(events[1], true, "insertCompositionText", "\u306E", [],
+                  "runAsyncForceCommitTest #2");
+  is(events[2].type, "compositionend",
+     "runAsyncForceCommitTest: the 3rd event must be compositionend #2");
+  is(events[2].target, textarea,
+     `runAsyncForceCommitTest: The "${events[2].type}" event was fired on wrong event target #2`);
+  is(events[2].data, "\u306E",
+     "runAsyncForceCommitTest: compositionend has wrong data #2");
+  is(events[3].type, "input",
+     "runAsyncForceCommitTest: the 4th event must be input #2");
+  is(events[3].target, textarea,
+     `runAsyncForceCommitTest: The "${events[3].type}" event was fired on wrong event target #2`);
+  checkInputEvent(events[3], false, "insertCompositionText", "\u306E", [],
+                  "runAsyncForceCommitTest #2");
+  ok(!getEditor(textarea).isComposing,
+     "runAsyncForceCommitTest: the textarea still has composition #2");
+  is(textarea.value, "\u306E",
+     "runAsyncForceCommitTest: the textarea doesn't have the committed text #2");
+
+  await waitCleanState;
+
+  window.removeEventListener("compositionstart", eventHandler, true);
+  window.removeEventListener("compositionupdate", eventHandler, true);
+  window.removeEventListener("compositionend", eventHandler, true);
+  window.removeEventListener("beforeinput", eventHandler, true);
+  window.removeEventListener("input", eventHandler, true);
+  window.removeEventListener("text", eventHandler, true);
+}
+
+function runBug811755Test()
+{
+  iframe2.contentDocument.body.innerHTML = "<div>content<br/></div>";
+  iframe2.contentWindow.focus();
+  // Query everything
+  let textContent = synthesizeQueryTextContent(0, 10);
+  if (!checkQueryContentResult(textContent, "runBug811755Test: synthesizeQueryTextContent #1")) {
+    return;
+  }
+  // Query everything but specify exact end offset, which should be immediately after the <br> node
+  // If PreContentIterator is used, the next node after <br> is the node after </div>.
+  // If ContentIterator is used, the next node is the <div> node itself. In this case, the end
+  // node ends up being before the start node, and an empty string is returned.
+  let queryContent = synthesizeQueryTextContent(0, textContent.text.length);
+  if (!checkQueryContentResult(queryContent, "runBug811755Test: synthesizeQueryTextContent #2")) {
+    return;
+  }
+  is(queryContent.text, textContent.text, "runBug811755Test: two queried texts don't match");
+}
+
+function runIsComposingTest()
+{
+  let expectedIsComposing = false;
+  let description = "";
+
+  function eventHandler(aEvent)
+  {
+    if (aEvent.type == "keydown" || aEvent.type == "keyup") {
+      is(aEvent.isComposing, expectedIsComposing,
+         "runIsComposingTest: " + description + " (type=" + aEvent.type + ", key=" + aEvent.key + ")");
+    } else if (aEvent.type == "keypress") {
+      // keypress event shouldn't be fired during composition so that isComposing should be always false.
+      is(aEvent.isComposing, false,
+         "runIsComposingTest: " + description + " (type=" + aEvent.type + ")");
+    } else {
+      checkInputEvent(aEvent, expectedIsComposing, "insertCompositionText", "\u3042", [],
+                      `runIsComposingTest: ${description}`);
+    }
+  }
+
+  function onComposition(aEvent)
+  {
+    if (aEvent.type == "compositionstart") {
+      expectedIsComposing = true;
+    } else if (aEvent.type == "compositionend") {
+      expectedIsComposing = false;
+    }
+  }
+
+  textarea.addEventListener("keydown", eventHandler, true);
+  textarea.addEventListener("keypress", eventHandler, true);
+  textarea.addEventListener("keyup", eventHandler, true);
+  textarea.addEventListener("beforeinput", eventHandler, true);
+  textarea.addEventListener("input", eventHandler, true);
+  textarea.addEventListener("compositionstart", onComposition, true);
+  textarea.addEventListener("compositionend", onComposition, true);
+
+  textarea.focus();
+  textarea.value = "";
+
+  // XXX These cases shouldn't occur in actual native key events because we
+  //     don't dispatch key events while composition (bug 354358).
+  description = "events before dispatching compositionstart";
+  synthesizeKey("KEY_ArrowLeft");
+
+  description = "events after dispatching compositionchange";
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 },
+      "key": { key: "a", code: "KeyA", keyCode: KeyboardEvent.DOM_VK_A },
+    });
+
+  // Although, firing keypress event during composition is a bug.
+  synthesizeKey("KEY_Insert");
+
+  description = "events for committing composition string";
+
+  synthesizeComposition({ type: "compositioncommitasis",
+                          key: { key: "KEY_Enter", code: "Enter", type: "keydown" } });
+
+  // input event will be fired by synthesizing compositionend event.
+  // Then, its isComposing should be false.
+  description = "events after dispatching compositioncommitasis";
+  synthesizeKey("KEY_Enter", {type: "keyup"});
+
+  textarea.removeEventListener("keydown", eventHandler, true);
+  textarea.removeEventListener("keypress", eventHandler, true);
+  textarea.removeEventListener("keyup", eventHandler, true);
+  textarea.removeEventListener("beforeinput", eventHandler, true);
+  textarea.removeEventListener("input", eventHandler, true);
+  textarea.removeEventListener("compositionstart", onComposition, true);
+  textarea.removeEventListener("compositionend", onComposition, true);
+
+  textarea.value = "";
+}
+
+function runRedundantChangeTest()
+{
+  textarea.focus();
+
+  let result = [];
+  function clearResult()
+  {
+    result = [];
+  }
+
+  function handler(aEvent)
+  {
+    result.push(aEvent);
+  }
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+  textarea.addEventListener("beforeinput", handler, true);
+  textarea.addEventListener("input", handler, true);
+  textarea.addEventListener("text", handler, true);
+
+  textarea.value = "";
+
+  // synthesize change event
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  is(result.length, 4,
+     "runRedundantChangeTest: 4 events should be fired after synthesizing composition change #1");
+  is(result[0].type, "compositionupdate",
+     "runRedundantChangeTest: compositionupdate should be fired after synthesizing composition change #1");
+  is(result[1].type, "text",
+     "runRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string #1");
+  is(result[2].type, "beforeinput",
+     "runRedundantChangeTest: beforeinput should be fired after synthesizing composition change #1");
+  checkInputEvent(result[2], true, "insertCompositionText", "\u3042", [],
+                  "runRedundantChangeTest: after synthesizing composition change #1");
+  is(result[3].type, "input",
+     "runRedundantChangeTest: input should be fired after synthesizing composition change #1");
+  checkInputEvent(result[3], true, "insertCompositionText", "\u3042", [],
+                  "runRedundantChangeTest: after synthesizing composition change #1");
+  is(textarea.value, "\u3042", "runRedundantChangeTest: textarea has uncommitted string #1");
+
+  // synthesize another change event
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042\u3044",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  is(result.length, 4,
+     "runRedundantChangeTest: 4 events should be fired after synthesizing composition change #2");
+  is(result[0].type, "compositionupdate",
+     "runRedundantChangeTest: compositionupdate should be fired after synthesizing composition change #2");
+  is(result[1].type, "text",
+     "runRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string #2");
+  is(result[2].type, "beforeinput",
+     "runRedundantChangeTest: beforeinput should be fired after synthesizing composition change #2");
+  checkInputEvent(result[2], true, "insertCompositionText", "\u3042\u3044", [],
+                  "runRedundantChangeTest: after synthesizing composition change #2");
+  is(result[3].type, "input",
+     "runRedundantChangeTest: input should be fired after synthesizing composition change #2");
+  checkInputEvent(result[3], true, "insertCompositionText", "\u3042\u3044", [],
+                  "runRedundantChangeTest: after synthesizing composition change #2");
+  is(textarea.value, "\u3042\u3044", "runRedundantChangeTest: textarea has uncommitted string #2");
+
+  // synthesize same change event again
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3042\u3044",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  is(result.length, 0, "runRedundantChangeTest: no events should be fired after synthesizing composition change again");
+  is(textarea.value, "\u3042\u3044", "runRedundantChangeTest: textarea has uncommitted string #3");
+
+  // synthesize commit-as-is
+  clearResult();
+  synthesizeComposition({ type: "compositioncommitasis" });
+  is(result.length, 4,
+     "runRedundantChangeTest: 4 events should be fired after synthesizing composition commit-as-is");
+  is(result[0].type, "text",
+     "runRedundantChangeTest: text should be fired after synthesizing composition commit-as-is for removing the ranges");
+  is(result[1].type, "beforeinput",
+     "runRedundantChangeTest: beforeinput should be fired after synthesizing composition commit-as-is for removing the ranges");
+  checkInputEvent(result[1], true, "insertCompositionText", "\u3042\u3044", [],
+                  "runRedundantChangeTest: at synthesizing commit-as-is");
+  is(result[2].type, "compositionend",
+     "runRedundantChangeTest: compositionend should be fired after synthesizing composition commit-as-is");
+  is(result[3].type, "input",
+     "runRedundantChangeTest: input should be fired before compositionend at synthesizing commit-as-is");
+  checkInputEvent(result[3], false, "insertCompositionText", "\u3042\u3044", [],
+                  "runRedundantChangeTest: at synthesizing commit-as-is");
+  is(textarea.value, "\u3042\u3044", "runRedundantChangeTest: textarea has the commit string");
+
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+  textarea.removeEventListener("beforeinput", handler, true);
+  textarea.removeEventListener("input", handler, true);
+  textarea.removeEventListener("text", handler, true);
+}
+
+function runNotRedundantChangeTest()
+{
+  textarea.focus();
+
+  let result = [];
+  function clearResult()
+  {
+    result = [];
+  }
+
+  function handler(aEvent)
+  {
+    result.push(aEvent);
+  }
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+  textarea.addEventListener("beforeinput", handler, true);
+  textarea.addEventListener("input", handler, true);
+  textarea.addEventListener("text", handler, true);
+
+  textarea.value = "abcde";
+
+  // synthesize change event with non-null ranges
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "ABCDE",
+        "clauses":
+        [
+          { "length": 5, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 5, "length": 0 }
+    });
+
+  is(result.length, 4,
+     "runNotRedundantChangeTest: 4 events should be fired after synthesizing composition change with non-null ranges");
+  is(result[0].type, "compositionupdate",
+     "runNotRedundantChangeTest: compositionupdate should be fired after synthesizing composition change with non-null ranges");
+  is(result[1].type, "text",
+     "runNotRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string with non-null ranges");
+  is(result[2].type, "beforeinput",
+     "runNotRedundantChangeTest: beforeinput should be fired after synthesizing composition change with non-null ranges");
+  checkInputEvent(result[2], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with non-null ranges");
+  is(result[3].type, "input",
+     "runNotRedundantChangeTest: input should be fired after synthesizing composition change with non-null ranges");
+  checkInputEvent(result[3], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with non-null ranges");
+  is(textarea.value, "abcdeABCDE", "runNotRedundantChangeTest: textarea has uncommitted string #1");
+
+  // synthesize change event with null ranges
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "ABCDE",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+    });
+  is(result.length, 3,
+     "runNotRedundantChangeTest: 3 events should be fired after synthesizing composition change with null ranges after non-null ranges");
+  is(result[0].type, "text",
+     "runNotRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string with null ranges after non-null ranges");
+  is(result[1].type, "beforeinput",
+     "runNotRedundantChangeTest: beforeinput should be fired after synthesizing composition change because it's dispatched when there is composing string with null ranges after non-null ranges");
+  checkInputEvent(result[1], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with null ranges after non-null ranges");
+  is(result[2].type, "input",
+     "runNotRedundantChangeTest: input should be fired after synthesizing composition change with null ranges after non-null ranges");
+  checkInputEvent(result[2], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with null ranges after non-null ranges");
+  is(textarea.value, "abcdeABCDE", "runNotRedundantChangeTest: textarea has uncommitted string #2");
+
+  // synthesize change event with non-null ranges
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "ABCDE",
+        "clauses":
+        [
+          { "length": 5, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 5, "length": 0 }
+    });
+
+  is(result.length, 3,
+     "runNotRedundantChangeTest: 3 events should be fired after synthesizing composition change with null ranges after non-null ranges");
+  is(result[0].type, "text",
+     "runNotRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string with non-null ranges after null ranges");
+  is(result[1].type, "beforeinput",
+     "runNotRedundantChangeTest: beforeinput should be fired after synthesizing composition change because it's dispatched when there is composing string with non-null ranges after null ranges");
+  checkInputEvent(result[1], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with non-null ranges after null ranges");
+  is(result[2].type, "input",
+     "runNotRedundantChangeTest: input should be fired after synthesizing composition change with non-null ranges after null ranges");
+  checkInputEvent(result[2], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with non-null ranges after null ranges");
+  is(textarea.value, "abcdeABCDE", "runNotRedundantChangeTest: textarea has uncommitted string #3");
+
+  // synthesize change event with empty data and null ranges
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "",
+        "clauses":
+        [
+          { "length": 0, "attr": 0 }
+        ]
+      },
+    });
+  is(result.length, 4,
+     "runNotRedundantChangeTest: 4 events should be fired after synthesizing composition change with empty data and null ranges after non-null ranges");
+  is(result[0].type, "compositionupdate",
+     "runNotRedundantChangeTest: compositionupdate should be fired after synthesizing composition change with empty data and null ranges after non-null ranges");
+  is(result[1].type, "text",
+     "runNotRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string with empty data and null ranges after non-null ranges");
+  is(result[2].type, "beforeinput",
+     "runNotRedundantChangeTest: beforeinput should be fired after synthesizing composition change with empty data and null ranges after non-null ranges");
+  checkInputEvent(result[2], true, "insertCompositionText", "", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with empty data and null ranges after non-null ranges");
+  is(result[3].type, "input",
+     "runNotRedundantChangeTest: input should be fired after synthesizing composition change with empty data and null ranges after non-null ranges");
+  checkInputEvent(result[3], true, "insertCompositionText", "", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with empty data and null ranges after non-null ranges");
+  is(textarea.value, "abcde", "runNotRedundantChangeTest: textarea doesn't have uncommitted string #1");
+
+  // synthesize change event with non-null ranges
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "ABCDE",
+        "clauses":
+        [
+          { "length": 5, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 5, "length": 0 }
+    });
+
+  is(result.length, 4,
+     "runNotRedundantChangeTest: 4 events should be fired after synthesizing composition change with non-null ranges after empty data and null ranges");
+  is(result[0].type, "compositionupdate",
+     "runNotRedundantChangeTest: compositionupdate should be fired after synthesizing composition change with non-null ranges after empty data and null ranges");
+  is(result[1].type, "text",
+     "runNotRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string with non-null ranges after empty data and null ranges");
+  is(result[2].type, "beforeinput",
+     "runNotRedundantChangeTest: beforeinput should be fired after synthesizing composition change with non-null ranges after empty data and null ranges");
+  checkInputEvent(result[2], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with non-null ranges after empty data and null ranges");
+  is(result[3].type, "input",
+     "runNotRedundantChangeTest: input should be fired after synthesizing composition change with non-null ranges after empty data and null ranges");
+  checkInputEvent(result[3], true, "insertCompositionText", "ABCDE", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with non-null ranges after empty data and null ranges");
+  is(textarea.value, "abcdeABCDE", "runNotRedundantChangeTest: textarea has uncommitted string #4");
+
+  clearResult();
+  synthesizeComposition({ type: "compositioncommit", data: "" });
+
+  is(result.length, 5,
+     "runNotRedundantChangeTest: 5 events should be fired after synthesizing composition commit with empty data after non-empty data");
+  is(result[0].type, "compositionupdate",
+     "runNotRedundantChangeTest: compositionupdate should be fired after synthesizing composition commit with empty data after non-empty data");
+  is(result[1].type, "text",
+     "runNotRedundantChangeTest: text should be fired after synthesizing composition change because it's dispatched when there is composing string with empty data after non-empty data");
+  is(result[2].type, "beforeinput",
+     "runNotRedundantChangeTest: beforeinput should be fired after synthesizing composition commit with empty data after non-empty data");
+  checkInputEvent(result[2], true, "insertCompositionText", "", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with empty data after non-empty data");
+  is(result[3].type, "compositionend",
+     "runNotRedundantChangeTest: compositionend should be fired after synthesizing composition commit with empty data after non-empty data");
+  is(result[4].type, "input",
+     "runNotRedundantChangeTest: input should be fired after compositionend after synthesizing composition change with empty data after non-empty data");
+  checkInputEvent(result[4], false, "insertCompositionText", "", [],
+                  "runNotRedundantChangeTest: after synthesizing composition change with empty data after non-empty data");
+  is(textarea.value, "abcde", "runNotRedundantChangeTest: textarea doesn't have uncommitted string #2");
+
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+  textarea.removeEventListener("beforeinput", handler, true);
+  textarea.removeEventListener("input", handler, true);
+  textarea.removeEventListener("text", handler, true);
+}
+
+function runNativeLineBreakerTest()
+{
+  textarea.focus();
+
+  let result = {};
+  function clearResult()
+  {
+    result = { compositionupdate: null, compositionend: null };
+  }
+
+  function handler(aEvent)
+  {
+    result[aEvent.type] = aEvent.data;
+  }
+
+  Services.prefs.setBoolPref("dom.compositionevent.allow_control_characters", false);
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+
+  // '\n' in composition string shouldn't be changed.
+  clearResult();
+  textarea.value = "";
+  let clauses = [ "abc\n", "def\n\ng", "hi\n", "\njkl" ];
+  let caret = clauses[0] + clauses[1] + clauses[2];
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": clauses.join(''),
+        "clauses":
+        [
+          { "length": clauses[0].length,
+            "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          { "length": clauses[1].length,
+            "attr": COMPOSITION_ATTR_SELECTED_RAW_CLAUSE },
+          { "length": clauses[2].length,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": clauses[3].length,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+        ]
+      },
+      "caret": { "start": caret.length, "length": 0 }
+    });
+
+  checkSelection(caret.replace(/\n/g, "\n").length + (kLFLen - 1) * 4, "", "runNativeLineBreakerTest", "#1");
+  checkIMESelection("RawClause", true, 0, clauses[0].replace(/\n/g, kLF), "runNativeLineBreakerTest: \\n shouldn't be replaced with any character #1");
+  checkIMESelection("SelectedRawClause", true, clauses[0].replace(/\n/g, kLF).length, clauses[1].replace(/\n/g, kLF), "runNativeLineBreakerTest: \\n shouldn't be replaced with any character #1");
+  checkIMESelection("ConvertedClause", true, (clauses[0] + clauses[1]).replace(/\n/g, kLF).length, clauses[2].replace(/\n/g, kLF), "runNativeLineBreakerTest: \\n shouldn't be replaced with any character #1");
+  checkIMESelection("SelectedClause", true, (clauses[0] + clauses[1] + clauses[2]).replace(/\n/g, kLF).length, clauses[3].replace(/\n/g, kLF), "runNativeLineBreakerTest: \\n shouldn't be replaced with any character #1");
+  is(result.compositionupdate, clauses.join('').replace(/\n/g, "\n"), "runNativeLineBreakerTest: \\n in compositionupdate.data shouldn't be removed nor replaced with other characters #1");
+  is(textarea.value, clauses.join('').replace(/\n/g, "\n"), "runNativeLineBreakerTest: \\n in textarea.value shouldn't be removed nor replaced with other characters #1");
+
+  synthesizeComposition({ type: "compositioncommit", data: clauses.join('') });
+  checkSelection(clauses.join('').replace(/\n/g, "\n").length + (kLFLen - 1) * 5, "", "runNativeLineBreakerTest", "#2");
+  is(result.compositionend, clauses.join('').replace(/\n/g, "\n"), "runNativeLineBreakerTest: \\n in compositionend.data shouldn't be removed nor replaced with other characters #2");
+  is(textarea.value, clauses.join('').replace(/\n/g, "\n"), "runNativeLineBreakerTest: \\n in textarea.value shouldn't be removed nor replaced with other characters #2");
+
+  // \r\n in composition string should be replaced with \n.
+  clearResult();
+  textarea.value = "";
+  clauses = [ "abc\r\n", "def\r\n\r\ng", "hi\r\n", "\r\njkl" ];
+  caret = clauses[0] + clauses[1] + clauses[2];
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": clauses.join(''),
+        "clauses":
+        [
+          { "length": clauses[0].length,
+            "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          { "length": clauses[1].length,
+            "attr": COMPOSITION_ATTR_SELECTED_RAW_CLAUSE },
+          { "length": clauses[2].length,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": clauses[3].length,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+        ]
+      },
+      "caret": { "start": caret.length, "length": 0 }
+    });
+
+  checkSelection(caret.replace(/\r\n/g, "\n").length + (kLFLen - 1) * 4, "", "runNativeLineBreakerTest", "#3");
+  checkIMESelection("RawClause", true, 0, clauses[0].replace(/\r\n/g, kLF), "runNativeLineBreakerTest: \\r\\n should be replaced with \\n #3");
+  checkIMESelection("SelectedRawClause", true, clauses[0].replace(/\r\n/g, kLF).length, clauses[1].replace(/\r\n/g, kLF), "runNativeLineBreakerTest: \\r\\n should be replaced with \\n #3");
+  checkIMESelection("ConvertedClause", true, (clauses[0] + clauses[1]).replace(/\r\n/g, kLF).length, clauses[2].replace(/\r\n/g, kLF), "runNativeLineBreakerTest: \\r\\n should be replaced with \\n #3");
+  checkIMESelection("SelectedClause", true, (clauses[0] + clauses[1] + clauses[2]).replace(/\r\n/g, kLF).length, clauses[3].replace(/\r\n/g, kLF), "runNativeLineBreakerTest: \\r\\n should be replaced with \\n #3");
+  is(result.compositionupdate, clauses.join('').replace(/\r\n/g, "\n"), "runNativeLineBreakerTest: \\r\\n in compositionudpate.data should be replaced with \\n #3");
+  is(textarea.value, clauses.join('').replace(/\r\n/g, "\n"), "runNativeLineBreakerTest: \\r\\n in textarea.value should be replaced with \\n #3");
+
+  synthesizeComposition({ type: "compositioncommit", data: clauses.join('') });
+  checkSelection(clauses.join('').replace(/\r\n/g, "\n").length + (kLFLen - 1) * 5, "", "runNativeLineBreakerTest", "#4");
+  is(result.compositionend, clauses.join('').replace(/\r\n/g, "\n"), "runNativeLineBreakerTest: \\r\\n in compositionend.data should be replaced with \\n #4");
+  is(textarea.value, clauses.join('').replace(/\r\n/g, "\n"), "runNativeLineBreakerTest: \\r\\n in textarea.value should be replaced with \\n #4");
+
+  // \r (not followed by \n) in composition string should be replaced with \n.
+  clearResult();
+  textarea.value = "";
+  clauses = [ "abc\r", "def\r\rg", "hi\r", "\rjkl" ];
+  caret = clauses[0] + clauses[1] + clauses[2];
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": clauses.join(''),
+        "clauses":
+        [
+          { "length": clauses[0].length,
+            "attr": COMPOSITION_ATTR_RAW_CLAUSE },
+          { "length": clauses[1].length,
+            "attr": COMPOSITION_ATTR_SELECTED_RAW_CLAUSE },
+          { "length": clauses[2].length,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+          { "length": clauses[3].length,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+        ]
+      },
+      "caret": { "start": caret.length, "length": 0 }
+    });
+
+  checkSelection(caret.replace(/\r/g, "\n").length + (kLFLen - 1) * 4, "", "runNativeLineBreakerTest", "#5");
+  checkIMESelection("RawClause", true, 0, clauses[0].replace(/\r/g, kLF), "runNativeLineBreakerTest: \\r should be replaced with \\n #5");
+  checkIMESelection("SelectedRawClause", true, clauses[0].replace(/\r/g, kLF).length, clauses[1].replace(/\r/g, kLF), "runNativeLineBreakerTest: \\r should be replaced with \\n #5");
+  checkIMESelection("ConvertedClause", true, (clauses[0] + clauses[1]).replace(/\r/g, kLF).length, clauses[2].replace(/\r/g, kLF), "runNativeLineBreakerTest: \\r should be replaced with \\n #5");
+  checkIMESelection("SelectedClause", true, (clauses[0] + clauses[1] + clauses[2]).replace(/\r/g, kLF).length, clauses[3].replace(/\r/g, kLF), "runNativeLineBreakerTest: \\r should be replaced with \\n #5");
+  is(result.compositionupdate, clauses.join('').replace(/\r/g, "\n"), "runNativeLineBreakerTest: \\r in compositionupdate.data should be replaced with \\n #5");
+  is(textarea.value, clauses.join('').replace(/\r/g, "\n"), "runNativeLineBreakerTest: \\r in textarea.value should be replaced with \\n #5");
+
+  synthesizeComposition({ type: "compositioncommit", data: clauses.join('') });
+  checkSelection(clauses.join('').replace(/\r/g, "\n").length + (kLFLen - 1) * 5, "", "runNativeLineBreakerTest", "#6");
+  is(result.compositionend, clauses.join('').replace(/\r/g, "\n"), "runNativeLineBreakerTest: \\r in compositionend.data should be replaced with \\n #6");
+  is(textarea.value, clauses.join('').replace(/\r/g, "\n"), "runNativeLineBreakerTest: \\r in textarea.value should be replaced with \\n #6");
+
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+
+  Services.prefs.clearUserPref("dom.compositionevent.allow_control_characters");
+}
+
+function runControlCharTest()
+{
+  textarea.focus();
+
+  let result = {};
+  function clearResult()
+  {
+    result = { compositionupdate: null, compositionend: null };
+  }
+
+  function handler(aEvent)
+  {
+    result[aEvent.type] = aEvent.data;
+  }
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+
+  textarea.value = "";
+
+  let controlChars = String.fromCharCode.apply(null, Object.keys(Array.from({length:0x20}))) + "\x7F";
+  let allowedChars = "\t\n\n";
+
+  let data = "AB" + controlChars + "CD" + controlChars + "EF";
+  let removedData = "AB" + allowedChars + "CD" + allowedChars + "EF";
+
+  let DIndex = data.indexOf("D");
+  let removedDIndex = removedData.indexOf("D");
+
+  // input string contains control characters
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": data,
+        "clauses":
+        [
+          { "length": DIndex,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": data.length - DIndex,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": DIndex, "length": 0 }
+    });
+
+  checkSelection(removedDIndex + (kLFLen - 1) * 2, "", "runControlCharTest", "#1")
+
+  is(result.compositionupdate, removedData, "runControlCharTest: control characters in event.data should be removed in compositionupdate event #1");
+  is(textarea.value, removedData, "runControlCharTest: control characters should not appear in textarea #1");
+
+  synthesizeComposition({ type: "compositioncommit", data });
+
+  is(result.compositionend, removedData, "runControlCharTest: control characters in event.data should be removed in compositionend event #2");
+  is(textarea.value, removedData, "runControlCharTest: control characters should not appear in textarea #2");
+
+  textarea.value = "";
+
+  clearResult();
+
+  Services.prefs.setBoolPref("dom.compositionevent.allow_control_characters", true);
+
+  // input string contains control characters, allowing control characters
+  clearResult();
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": data,
+        "clauses":
+        [
+          { "length": DIndex,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": data.length - DIndex,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": DIndex, "length": 0 }
+    });
+
+  checkSelection(DIndex + (kLFLen - 1) * 2, "", "runControlCharTest", "#3")
+
+  is(result.compositionupdate, data.replace(/\r/g, "\n"), "runControlCharTest: control characters in event.data should not be removed in compositionupdate event #3");
+  is(textarea.value, data.replace(/\r/g, "\n"), "runControlCharTest: control characters should appear in textarea #3");
+
+  synthesizeComposition({ type: "compositioncommit", data });
+
+  is(result.compositionend, data.replace(/\r/g, "\n"), "runControlCharTest: control characters in event.data should not be removed in compositionend event #4");
+  is(textarea.value, data.replace(/\r/g, "\n"), "runControlCharTest: control characters should appear in textarea #4");
+
+  Services.prefs.clearUserPref("dom.compositionevent.allow_control_characters");
+
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+}
+
+async function runRemoveContentTest()
+{
+  let events = [];
+  function eventHandler(aEvent)
+  {
+    events.push(aEvent);
+  }
+  textarea.addEventListener("compositionstart", eventHandler, true);
+  textarea.addEventListener("compositionupdate", eventHandler, true);
+  textarea.addEventListener("compositionend", eventHandler, true);
+  textarea.addEventListener("beforeinput", eventHandler, true);
+  textarea.addEventListener("input", eventHandler, true);
+  textarea.addEventListener("text", eventHandler, true);
+
+  textarea.focus();
+  textarea.value = "";
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u306E",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  let nextSibling = textarea.nextSibling;
+  let parent = textarea.parentElement;
+
+  events = [];
+  parent.removeChild(textarea);
+
+  await waitForEventLoops(50);
+
+  // XXX Currently, "input" event and "beforeinput" event are not fired on removed content.
+  is(events.length, 3,
+     "runRemoveContentTest: wrong event count #1");
+  is(events[0].type, "compositionupdate",
+     "runRemoveContentTest: the 1st event must be compositionupdate #1");
+  is(events[0].target, textarea,
+     `runRemoveContentTest: The "${events[0].type}" event was fired on wrong event target #1`);
+  is(events[0].data, "",
+     "runRemoveContentTest: compositionupdate has wrong data #1");
+  is(events[1].type, "text",
+     "runRemoveContentTest: the 2nd event must be text #1");
+  is(events[1].target, textarea,
+     `runRemoveContentTest: The "${events[1].type}" event was fired on wrong event target #1`);
+  todo_is(events[2].type, "beforeinput",
+     "runRemoveContentTest: the 3rd event must be beforeinput #1");
+  // is(events[2].target, textarea,
+  //    `runRemoveContentTest: The "${events[2].type}" event was fired on wrong event target #1`);
+  // checkInputEvent(events[2], true, "insertCompositionText", "", [],
+  //                 "runRemoveContentTest: #1");
+  is(events[2].type, "compositionend",
+     "runRemoveContentTest: the 4th event must be compositionend #1");
+  is(events[2].target, textarea,
+     `runRemoveContentTest: The "${events[2].type}" event was fired on wrong event target #1`);
+  is(events[2].data, "",
+     "runRemoveContentTest: compositionend has wrong data #1");
+  ok(!getEditor(textarea).isComposing,
+     "runRemoveContentTest: the textarea still has composition #1");
+  todo_is(textarea.value, "",
+     "runRemoveContentTest: the textarea has the committed text? #1");
+
+  parent.insertBefore(textarea, nextSibling);
+
+  textarea.focus();
+  textarea.value = "";
+
+  synthesizeComposition({ type: "compositionstart" });
+
+  events = [];
+  parent.removeChild(textarea);
+
+  await waitForEventLoops(50);
+
+  // XXX Currently, "input" event and "beforeinput" event are not fired on removed content.
+  is(events.length, 2,
+     "runRemoveContentTest: wrong event count #2");
+  is(events[0].type, "text",
+     "runRemoveContentTest: the 1st event must be text #2");
+  is(events[0].target, textarea,
+     `runRemoveContentTest: The ${events[0].type} event was fired on wrong event target #2`);
+  todo_is(events[1].type, "beforeinput",
+     "runRemoveContentTest: the 2nd event must be beforeinput #2");
+  // is(events[1].target, textarea,
+  //    `runRemoveContentTest: The ${events[1].type} event was fired on wrong event target #2`);
+  // checkInputEvent(events[1], true, "insertCompositionText", "", [],
+  //                 "runRemoveContentTest: #2");
+  is(events[1].type, "compositionend",
+     "runRemoveContentTest: the 3rd event must be compositionend #2");
+  is(events[1].target, textarea,
+     `runRemoveContentTest: The ${events[1].type} event was fired on wrong event target #2`);
+  is(events[1].data, "",
+     "runRemoveContentTest: compositionupdate has wrong data #2");
+  ok(!getEditor(textarea).isComposing,
+     "runRemoveContentTest: the textarea still has composition #2");
+  is(textarea.value, "",
+     "runRemoveContentTest: the textarea has the committed text? #2");
+
+  parent.insertBefore(textarea, nextSibling);
+
+  textarea.removeEventListener("compositionstart", eventHandler, true);
+  textarea.removeEventListener("compositionupdate", eventHandler, true);
+  textarea.removeEventListener("compositionend", eventHandler, true);
+  textarea.removeEventListener("beforeinput", eventHandler, true);
+  textarea.removeEventListener("input", eventHandler, true);
+  textarea.removeEventListener("text", eventHandler, true);
+
+  await waitForTick();
+}
+
+function runTestOnAnotherContext(aPanelOrFrame, aFocusedEditor, aTestName)
+{
+  aFocusedEditor.value = "";
+
+  // The frames and panel are cross-origin, and we no longer
+  // propagate flushes to parent cross-origin iframes explicitly,
+  // so flush our own layout here so the positions are correct.
+  document.documentElement.getBoundingClientRect();
+
+  let editorRect = synthesizeQueryEditorRect();
+  if (!checkQueryContentResult(editorRect, aTestName + ": editorRect")) {
+    return;
+  }
+
+  let r = aPanelOrFrame.getBoundingClientRect();
+  let parentRect = {
+    left: r.left * window.devicePixelRatio,
+    top: r.top * window.devicePixelRatio,
+    width: (r.right - r.left) * window.devicePixelRatio,
+    height: (r.bottom - r.top) * window.devicePixelRatio,
+  };
+  checkRectContainsRect(editorRect, parentRect, aTestName +
+                        ": the editor rect coordinates are wrong");
+
+  // input characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3078\u3093\u3057\u3093",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 }
+    });
+
+  if (!checkContent("\u3078\u3093\u3057\u3093", aTestName, "#1-1") ||
+      !checkSelection(4, "", aTestName, "#1-1")) {
+    return;
+  }
+
+  // convert them #1
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u8FD4\u4FE1",
+        "clauses":
+        [
+          { "length": 2,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  if (!checkContent("\u8FD4\u4FE1", aTestName, "#1-2") ||
+      !checkSelection(2, "", aTestName, "#1-2")) {
+    return;
+  }
+
+  // convert them #2
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u5909\u8EAB",
+        "clauses":
+        [
+          { "length": 2,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  if (!checkContent("\u5909\u8EAB", aTestName, "#1-3") ||
+      !checkSelection(2, "", aTestName, "#1-3")) {
+    return;
+  }
+
+  // commit them
+  synthesizeComposition({ type: "compositioncommitasis" });
+  if (!checkContent("\u5909\u8EAB", aTestName, "#1-4") ||
+      !checkSelection(2, "", aTestName, "#1-4")) {
+    return;
+  }
+
+  is(aFocusedEditor.value, "\u5909\u8EAB",
+     aTestName + ": composition isn't in the focused editor");
+  if (aFocusedEditor.value != "\u5909\u8EAB") {
+    return;
+  }
+
+  let textRect = synthesizeQueryTextRect(0, 1);
+  let caretRect = synthesizeQueryCaretRect(2);
+  if (!checkQueryContentResult(textRect,
+                               aTestName + ": synthesizeQueryTextRect") ||
+      !checkQueryContentResult(caretRect,
+                               aTestName + ": synthesizeQueryCaretRect")) {
+    return;
+  }
+  checkRectContainsRect(textRect, editorRect, aTestName + ":testRect");
+  checkRectContainsRect(caretRect, editorRect, aTestName + ":caretRect");
+}
+
+function runFrameTest()
+{
+  textareaInFrame.focus();
+  runTestOnAnotherContext(iframe, textareaInFrame, "runFrameTest");
+  runCharAtPointTest(textareaInFrame, "textarea in the iframe");
+}
+
+async function runPanelTest()
+{
+  panel.hidden = false;
+  let waitOpenPopup = new Promise(resolve => {
+    panel.addEventListener("popupshown", resolve, {once: true});
+  });
+  let waitFocusTextBox = new Promise(resolve => {
+    textbox.addEventListener("focus", resolve, {once: true});
+  });
+  panel.openPopupAtScreen(window.screenX + window.outerWidth, 0, false);
+  await waitOpenPopup;
+  textbox.focus();
+  await waitFocusTextBox;
+  is(panel.state, "open", "The panel should be open (after textbox.focus())");
+  await waitForTick();
+  is(panel.state, "open", "The panel should be open (after waitForTick())");
+  runTestOnAnotherContext(panel, textbox, "runPanelTest");
+  is(panel.state, "open", "The panel should be open (after runTestOnAnotherContext())");
+  runCharAtPointTest(textbox, "textbox in the panel");
+  is(panel.state, "open", "The panel should be open (after runCharAtPointTest())");
+  let waitClosePopup = new Promise(resolve => {
+    panel.addEventListener("popuphidden", resolve, {once: true});
+  });
+  panel.hidePopup();
+  await waitClosePopup;
+  await waitForTick();
+}
+
+// eslint-disable-next-line complexity
+function runMaxLengthTest()
+{
+  input.maxLength = 1;
+  input.value = "";
+  input.focus();
+
+  let kDesc ="runMaxLengthTest";
+
+  // input first character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  if (!checkContent("\u3089", kDesc, "#1-1") ||
+      !checkSelection(1, "", kDesc, "#1-1")) {
+    return;
+  }
+
+  // input second character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC", kDesc, "#1-2") ||
+      !checkSelection(2, "", kDesc, "#1-2")) {
+    return;
+  }
+
+  // input third character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081", kDesc, "#1-3") ||
+      !checkSelection(3, "", kDesc, "#1-3")) {
+    return;
+  }
+
+  // input fourth character
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093", kDesc, "#1-4") ||
+      !checkSelection(4, "", kDesc, "#1-4")) {
+    return;
+  }
+
+
+  // backspace
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081",
+        "clauses":
+        [
+          { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 3, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081", kDesc, "#1-5") ||
+      !checkSelection(3, "", kDesc, "#1-5")) {
+    return;
+  }
+
+  // re-input
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093",
+        "clauses":
+        [
+          { "length": 4, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093", kDesc, "#1-6") ||
+      !checkSelection(4, "", kDesc, "#1-6")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055",
+        "clauses":
+        [
+          { "length": 5, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 5, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055", kDesc, "#1-7") ||
+      !checkSelection(5, "", kDesc, "#1-7")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055\u3044",
+        "clauses":
+        [
+          { "length": 6, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 6, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055\u3044", kDesc, "#1-8") ||
+      !checkSelection(6, "", kDesc, "#1-8")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055\u3044\u3053",
+        "clauses":
+        [
+          { "length": 7, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 7, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055\u3044\u3053",
+                    kDesc, "#1-8") ||
+      !checkSelection(7, "", kDesc, "#1-8")) {
+    return;
+  }
+
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3089\u30FC\u3081\u3093\u3055\u3044\u3053\u3046",
+        "clauses":
+        [
+          { "length": 8, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 8, "length": 0 }
+    });
+
+  if (!checkContent("\u3089\u30FC\u3081\u3093\u3055\u3044\u3053\u3046",
+                    kDesc, "#1-9") ||
+      !checkSelection(8, "", kDesc, "#1-9")) {
+    return;
+  }
+
+  // convert
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u30E9\u30FC\u30E1\u30F3\u6700\u9AD8",
+        "clauses":
+        [
+          { "length": 4,
+            "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+          { "length": 2,
+            "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+        ]
+      },
+      "caret": { "start": 4, "length": 0 }
+    });
+
+  if (!checkContent("\u30E9\u30FC\u30E1\u30F3\u6700\u9AD8", kDesc, "#1-10") ||
+      !checkSelection(4, "", kDesc, "#1-10")) {
+    return;
+  }
+
+  // commit the composition string
+  synthesizeComposition({ type: "compositioncommitasis" });
+  if (!checkContent("\u30E9", kDesc, "#1-11") ||
+      !checkSelection(1, "", kDesc, "#1-11")) {
+    return;
+  }
+
+  // input characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u3057",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  if (!checkContent("\u30E9\u3057", kDesc, "#2-1") ||
+      !checkSelection(1 + 1, "", kDesc, "#2-1")) {
+    return;
+  }
+
+  // commit the composition string
+  synthesizeComposition({ type: "compositioncommit", data: "\u3058" });
+  if (!checkContent("\u30E9", kDesc, "#2-2") ||
+      !checkSelection(1 + 0, "", kDesc, "#2-2")) {
+    return;
+  }
+
+  // Undo
+  synthesizeKey("Z", {accelKey: true});
+
+  // XXX this is unexpected behavior, see bug 258291
+  if (!checkContent("\u30E9", kDesc, "#3-1") ||
+      !checkSelection(1 + 0, "", kDesc, "#3-1")) {
+    return;
+  }
+
+  // Undo
+  synthesizeKey("Z", {accelKey: true});
+  if (!checkContent("", kDesc, "#3-2") ||
+      !checkSelection(0, "", kDesc, "#3-2")) {
+    return;
+  }
+
+  // Redo
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+  if (!checkContent("\u30E9", kDesc, "#3-3") ||
+      !checkSelection(1, "", kDesc, "#3-3")) {
+    return;
+  }
+
+  // Redo
+  synthesizeKey("Z", {accelKey: true, shiftKey: true});
+  if (!checkContent("\u30E9", kDesc, "#3-4") ||
+      !checkSelection(1 + 0, "", kDesc, "#3-4")) {
+    return;
+  }
+
+  // The input element whose content length is already maxlength and
+  // the carest is at start of the content.
+  input.value = "X";
+  input.selectionStart = input.selectionEnd = 0;
+
+  // input characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u9B54",
+        "clauses":
+        [
+          { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 1, "length": 0 }
+    });
+
+  if (!checkContent("\u9B54X", kDesc, "#4-1") ||
+      !checkSelection(1, "", kDesc, "#4-1")) {
+    return;
+  }
+
+  // commit the composition string
+  synthesizeComposition({ type: "compositioncommitasis" });
+
+  // The input text must be discarded. Then, the caret position shouldn't be
+  // updated from its position at compositionstart.
+  if (!checkContent("X", kDesc, "#4-2") ||
+      !checkSelection(0, "", kDesc, "#4-2")) {
+    return;
+  }
+
+  // input characters
+  synthesizeCompositionChange(
+    { "composition":
+      { "string": "\u9B54\u6CD5",
+        "clauses":
+        [
+          { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+        ]
+      },
+      "caret": { "start": 2, "length": 0 }
+    });
+
+  if (!checkContent("\u9B54\u6CD5X", kDesc, "#5-1") ||
+      !checkSelection(2, "", kDesc, "#5-1")) {
+    return;
+  }
+
+  // commit the composition string
+  synthesizeComposition({ type: "compositioncommitasis" });
+
+  if (checkContent("X", kDesc, "#5-2")) {
+     checkSelection(0, "", kDesc, "#5-2");
+  }
+}
+
+async function runEditorReframeTests()
+{
+  async function runEditorReframeTest(aEditor, aWindow, aEventType)
+  {
+    function getValue()
+    {
+      return aEditor == contenteditable ?
+        aEditor.innerHTML.replace("<br>", "") : aEditor.value;
+    }
+
+    let description = "runEditorReframeTest(" + aEditor.id + ", \"" + aEventType + "\"): ";
+
+    let tests = [
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "a",
+                "clauses":
+                [
+                  { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 1, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "a", description + "Typing 'a'");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "ab",
+                "clauses":
+                [
+                  { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 2, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ab", description + "Typing 'b' next to 'a'");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "abc",
+                "clauses":
+                [
+                  { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 3, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "abc", description + "Typing 'c' next to 'ab'");
+        },
+      },
+      { test () {
+        synthesizeCompositionChange(
+          { "composition":
+            { "string": "abc",
+              "clauses":
+              [
+                { "length": 2, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+                { "length": 1, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+              ]
+            },
+            "caret": { "start": 2, "length": 0 }
+          });
+        },
+        check () {
+          is(getValue(aEditor), "abc", description + "Starting to convert 'ab][c'");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "ABc",
+                "clauses":
+                [
+                  { "length": 2, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE },
+                  { "length": 1, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE }
+                ]
+              },
+              "caret": { "start": 2, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABc", description + "Starting to convert 'AB][c'");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "ABC",
+                "clauses":
+                [
+                  { "length": 2, "attr": COMPOSITION_ATTR_CONVERTED_CLAUSE },
+                  { "length": 1, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+                ]
+              },
+              "caret": { "start": 3, "length": 0 }
+            });
+          },
+        check () {
+          is(getValue(aEditor), "ABC", description + "Starting to convert 'AB][C'");
+        },
+      },
+      { test () {
+          // Commit composition
+          synthesizeComposition({ type: "compositioncommitasis" });
+        },
+        check () {
+          is(getValue(aEditor), "ABC", description + "Committed as 'ABC'");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "d",
+                "clauses":
+                [
+                  { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 1, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABCd", description + "Typing 'd' next to ABC");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "de",
+                "clauses":
+                [
+                  { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 2, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABCde", description + "Typing 'e' next to ABCd");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "def",
+                "clauses":
+                [
+                  { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 3, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABCdef", description + "Typing 'f' next to ABCde");
+        },
+      },
+      { test () {
+          // Commit composition
+          synthesizeComposition({ type: "compositioncommitasis" });
+        },
+        check () {
+          is(getValue(aEditor), "ABCdef", description + "Commit 'def' without convert");
+        },
+      },
+      { test () {
+          // Select "Cd"
+          synthesizeKey("KEY_ArrowLeft");
+          synthesizeKey("KEY_ArrowLeft");
+          synthesizeKey("KEY_Shift", {type: "keydown", shiftKey: true});
+          synthesizeKey("KEY_ArrowLeft", {shiftKey: true});
+          synthesizeKey("KEY_ArrowLeft", {shiftKey: true});
+          synthesizeKey("KEY_Shift", {type: "keyup"});
+        },
+        check () {
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "g",
+                "clauses":
+                [
+                  { "length": 1, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 1, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABgef", description + "Typing 'g' next to AB");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "gh",
+                "clauses":
+                [
+                  { "length": 2, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 2, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABghef", description + "Typing 'h' next to ABg");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "ghi",
+                "clauses":
+                [
+                  { "length": 3, "attr": COMPOSITION_ATTR_RAW_CLAUSE }
+                ]
+              },
+              "caret": { "start": 3, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABghief", description + "Typing 'i' next to ABgh");
+        },
+      },
+      { test () {
+          synthesizeCompositionChange(
+            { "composition":
+              { "string": "GHI",
+                "clauses":
+                [
+                  { "length": 3, "attr": COMPOSITION_ATTR_SELECTED_CLAUSE }
+                ]
+              },
+              "caret": { "start": 3, "length": 0 }
+            });
+        },
+        check () {
+          is(getValue(aEditor), "ABGHIef", description + "Convert 'ghi' to 'GHI'");
+        },
+      },
+      { test () {
+          // Commit composition
+          synthesizeComposition({ type: "compositioncommitasis" });
+        },
+        check () {
+          is(getValue(aEditor), "ABGHIef", description + "Commit 'GHI'");
+        },
+      },
+    ];
+
+    function doReframe(aEvent)
+    {
+      aEvent.target.style.overflow =
+        aEvent.target.style.overflow != "hidden" ? "hidden" : "auto";
+    }
+    aEditor.focus();
+    aEditor.addEventListener(aEventType, doReframe);
+
+    for (const currentTest of tests) {
+      currentTest.test();
+      await waitForEventLoops(20);
+      currentTest.check();
+      await waitForTick();
+    }
+
+    await new Promise(resolve => {
+      aEditor.style.overflow = "auto";
+      aEditor.removeEventListener(aEventType, doReframe);
+      requestAnimationFrame(() => { SimpleTest.executeSoon(resolve); });
+    });
+  }
+
+  // TODO: Add "beforeinput" case.
+  input.value = "";
+  await runEditorReframeTest(input, window, "input");
+  input.value = "";
+  await runEditorReframeTest(input, window, "compositionupdate");
+  textarea.value = "";
+  await runEditorReframeTest(textarea, window, "input");
+  textarea.value = "";
+  await runEditorReframeTest(textarea, window, "compositionupdate");
+  contenteditable.innerHTML = "";
+  await runEditorReframeTest(contenteditable, windowOfContenteditable, "input");
+  contenteditable.innerHTML = "";
+  await runEditorReframeTest(contenteditable, windowOfContenteditable, "compositionupdate");
+}
+
+async function runIMEContentObserverTest()
+{
+  let notifications = [];
+  let onReceiveNotifications = null;
+  function callback(aTIP, aNotification)
+  {
+    if (aNotification.type != "notify-end-input-transaction") {
+      notifications.push(aNotification);
+    }
+    switch (aNotification.type) {
+      case "request-to-commit":
+        aTIP.commitComposition();
+        break;
+      case "request-to-cancel":
+        aTIP.cancelComposition();
+        break;
+    }
+    if (onReceiveNotifications) {
+      let resolve = onReceiveNotifications;
+      onReceiveNotifications = null;
+      SimpleTest.executeSoon(() => {
+        resolve();
+      });
+    }
+    return true;
+  }
+
+  function dumpUnexpectedNotifications(aDescription, aExpectedCount)
+  {
+    if (notifications.length <= aExpectedCount) {
+      return;
+    }
+    for (let i = aExpectedCount; i < notifications.length; i++) {
+      ok(false,
+         aDescription + " caused unexpected notification: " + notifications[i].type);
+    }
+  }
+
+  function promiseReceiveNotifications()
+  {
+    notifications = [];
+    return new Promise(resolve => {
+      onReceiveNotifications = resolve;
+    });
+  }
+
+  function flushNotifications()
+  {
+    return new Promise(resolve => {
+      // FYI: Dispatching non-op keyboard events causes forcibly flushing pending
+      //      notifications.
+      synthesizeKey("KEY_Unidentified", { code: "" });
+      SimpleTest.executeSoon(()=>{
+        notifications = [];
+        resolve();
+      });
+    });
+  }
+
+  function ensureToRemovePrecedingPositionChangeNotification(aDescription)
+  {
+    if (!notifications.length) {
+      return;
+    }
+    if (notifications[0].type != "notify-position-change") {
+      return;
+    }
+    // Sometimes, notify-position-change is notified first separately if
+    // the operation causes scroll or something.  Tests can ignore this.
+    ok(true, "notify-position-change", aDescription + "Unnecessary notify-position-change occurred, ignoring it");
+    notifications.shift();
+  }
+
+  // Bug 1374057 - On ubuntu 16.04 there are notify-position-change events that are
+  // recorded after all the other events so we remove them through this function.
+  function ensureToRemovePostPositionChangeNotification(aDescription, expectedCount)
+  {
+    if (!notifications.length) {
+      return;
+    }
+    if (notifications.length <= expectedCount) {
+      return;
+    }
+    if (notifications[notifications.length-1].type != "notify-position-change") {
+      return;
+    }
+    ok(true, "notify-position-change", aDescription + "Unnecessary notify-position-change occurred, ignoring it");
+    notifications.pop();
+  }
+
+  function getNativeText(aXPText)
+  {
+    if (kLF == "\n") {
+      return aXPText;
+    }
+    return aXPText.replace(/\n/g, kLF);
+  }
+
+  function checkPositionChangeNotification(aNotification, aDescription)
+  {
+    is(!aNotification || aNotification.type, "notify-position-change",
+       aDescription + " should cause position change notification");
+  }
+
+  function checkSelectionChangeNotification(aNotification, aDescription, aExpected)
+  {
+    is(!aNotification || aNotification.type, "notify-selection-change",
+       aDescription + " should cause selection change notification");
+    if (!aNotification || (aNotification.type != "notify-selection-change")) {
+      return;
+    }
+    is(aNotification.offset, aExpected.offset,
+       aDescription + " should cause selection change notification whose offset is " + aExpected.offset);
+    is(aNotification.text, aExpected.text,
+       aDescription + " should cause selection change notification whose text is '" + aExpected.text + "'");
+    is(aNotification.collapsed, !aExpected.text.length,
+       aDescription + " should cause selection change notification whose collapsed is " + (!aExpected.text.length));
+    is(aNotification.length, aExpected.text.length,
+       aDescription + " should cause selection change notification whose length is " + aExpected.text.length);
+    is(aNotification.reversed, aExpected.reversed || false,
+       aDescription + " should cause selection change notification whose reversed is " + (aExpected.reversed || false));
+    is(aNotification.writingMode, aExpected.writingMode || "horizontal-tb",
+       aDescription + " should cause selection change notification whose writingMode is '" + (aExpected.writingMode || "horizontal-tb"));
+  }
+
+  function checkTextChangeNotification(aNotification, aDescription, aExpected)
+  {
+    is(!aNotification || aNotification.type, "notify-text-change",
+       aDescription + " should cause text change notification");
+    if (!aNotification || aNotification.type != "notify-text-change") {
+      return;
+    }
+    is(aNotification.offset, aExpected.offset,
+       aDescription + " should cause text change notification whose offset is " + aExpected.offset);
+    is(aNotification.removedLength, aExpected.removedLength,
+       aDescription + " should cause text change notification whose removedLength is " + aExpected.removedLength);
+    is(aNotification.addedLength, aExpected.addedLength,
+       aDescription + " should cause text change notification whose addedLength is " + aExpected.addedLength);
+  }
+
+  async function testWithPlaintextEditor(aDescription, aElement, aTestLineBreaker)
+  {
+    aElement.value = "";
+    aElement.blur();
+    let doc = aElement.ownerDocument;
+    let win = doc.defaultView;
+    aElement.focus();
+    await flushNotifications();
+
+    // "a[]"
+    let description = aDescription + "typing 'a'";
+    let waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("a", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0, removedLength: 0, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 1, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "ab[]"
+    description = aDescription + "typing 'b'";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("b", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1, removedLength: 0, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "abc[]"
+    description = aDescription + "typing 'c'";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("c", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 2, removedLength: 0, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 3, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "ab[c]"
+    description = aDescription + "selecting 'c' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 2, text: "c", reversed: true });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "a[bc]"
+    description = aDescription + "selecting 'bc' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 1, text: "bc", reversed: true });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[abc]"
+    description = aDescription + "selecting 'bc' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0, text: "abc", reversed: true });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[]abc"
+    description = aDescription + "collapsing selection to the left-most with pressing ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0, text: "" });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[a]bc"
+    description = aDescription + "selecting 'a' with pressing Shift+ArrowRight";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowRight", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0, text: "a" });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[ab]c"
+    description = aDescription + "selecting 'ab' with pressing Shift+ArrowRight";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowRight", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0, text: "ab" });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[]c"
+    description = aDescription + "deleting 'ab' with pressing Delete";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0, removedLength: 2, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "[]"
+    description = aDescription + "deleting following 'c' with pressing Delete";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0, removedLength: 1, addedLength: 0 });
+    checkPositionChangeNotification(notifications[1], description);
+    ensureToRemovePostPositionChangeNotification(description, 2);
+    dumpUnexpectedNotifications(description, 2);
+
+    // "abc[]"
+    synthesizeKey("a", {}, win, callback);
+    synthesizeKey("b", {}, win, callback);
+    synthesizeKey("c", {}, win, callback);
+    await flushNotifications();
+
+    // "ab[]"
+    description = aDescription + "deleting 'c' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 2, removedLength: 1, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "[ab]"
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "[]"
+    description = aDescription + "deleting 'ab' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0, removedLength: 2, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "abcd[]"
+    synthesizeKey("a", {}, win, callback);
+    synthesizeKey("b", {}, win, callback);
+    synthesizeKey("c", {}, win, callback);
+    synthesizeKey("d", {}, win, callback);
+    await flushNotifications();
+
+    // "a[bc]d"
+    synthesizeKey("KEY_ArrowLeft", {}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "a[]d"
+    description = aDescription + "deleting 'bc' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1, removedLength: 2, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 1, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "a[bc]d"
+    synthesizeKey("b", {}, win, callback);
+    synthesizeKey("c", {}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "aB[]d"
+    description = aDescription + "replacing 'bc' with 'B' with pressing Shift+B";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("B", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1, removedLength: 2, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    if (!aTestLineBreaker) {
+      return;
+    }
+
+    // "aB\n[]d"
+    description = aDescription + "inserting a line break after 'B' with pressing Enter";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Enter", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 2, removedLength: 0, addedLength: kLFLen });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("aB\n").length, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "aB[]d"
+    description = aDescription + "removing a line break after 'B' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 2, removedLength: kLFLen, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "a[B]d"
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "a\n[]d"
+    description = aDescription + "replacing 'B' with a line break with pressing Enter";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Enter", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1, removedLength: 1, addedLength: kLFLen });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("a\n").length, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "a[\n]d"
+    description = aDescription + "selecting '\n' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 1, text: kLF, reversed: true });
+    ensureToRemovePostPositionChangeNotification(description, 1);
+    dumpUnexpectedNotifications(description, 1);
+
+    // "a[]d"
+    description = aDescription + "removing selected '\n' with pressing Delete";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1, removedLength: kLFLen, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 1, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // ab\ncd\nef\ngh\n[]
+    description = aDescription + "setting the value property to 'ab\ncd\nef\ngh\n'";
+    waitNotifications = promiseReceiveNotifications();
+    aElement.value = "ab\ncd\nef\ngh\n";
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0, removedLength: 2, addedLength: getNativeText("ab\ncd\nef\ngh\n").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("ab\ncd\nef\ngh\n").length, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+
+    // []
+    description = aDescription + "setting the value property to ''";
+    waitNotifications = promiseReceiveNotifications();
+    aElement.value = "";
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0, removedLength: getNativeText("ab\ncd\nef\ngh\n").length, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    ensureToRemovePostPositionChangeNotification(description, 3);
+    dumpUnexpectedNotifications(description, 3);
+  }
+
+  async function testWithHTMLEditor(aDescription, aElement, aDefaultParagraphSeparator)
+  {
+    let doc = aElement.ownerDocument;
+    let win = doc.defaultView;
+    let sel = doc.getSelection();
+    let inDesignMode = doc.designMode == "on";
+    let offsetAtStart = 0;
+    let offsetAtContainer = 0;
+    let isDefaultParagraphSeparatorBlock = aDefaultParagraphSeparator != "br";
+    doc.execCommand("defaultParagraphSeparator", false, aDefaultParagraphSeparator);
+
+    // "[]", "<p>[]</p>" or "<div>[]</div>"
+    switch (aDefaultParagraphSeparator) {
+      case "br":
+        aElement.innerHTML = "";
+        break;
+      case "p":
+      case "div":
+        aElement.innerHTML = "<" + aDefaultParagraphSeparator + "></" + aDefaultParagraphSeparator + ">";
+        sel.collapse(aElement.firstChild, 0);
+        offsetAtContainer = offsetAtStart + kLFLen;
+        break;
+      default:
+        ok(false, aDescription + "aDefaultParagraphSeparator is illegal value");
+        await flushNotifications();
+        return;
+    }
+
+    if (inDesignMode) {
+      win.focus();
+    } else {
+      aElement.focus();
+    }
+    await flushNotifications();
+
+    // "a[]"
+    let description = aDescription + "typing 'a'";
+    let waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("a", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, removedLength: 0, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 1 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "ab[]"
+    description = aDescription + "typing 'b'";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("b", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1 + offsetAtContainer, removedLength: 0, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "abc[]"
+    description = aDescription + "typing 'c'";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("c", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 2 + offsetAtContainer, removedLength: 0, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 3 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "ab[c]"
+    description = aDescription + "selecting 'c' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 2 + offsetAtContainer, text: "c", reversed: true });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "a[bc]"
+    description = aDescription + "selecting 'bc' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 1 + offsetAtContainer, text: "bc", reversed: true });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[abc]"
+    description = aDescription + "selecting 'bc' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, text: "abc", reversed: true });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[]abc"
+    description = aDescription + "collapsing selection to the left-most with pressing ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, text: "" });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[a]bc"
+    description = aDescription + "selecting 'a' with pressing Shift+ArrowRight";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowRight", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, text: "a" });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[ab]c"
+    description = aDescription + "selecting 'ab' with pressing Shift+ArrowRight";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowRight", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, text: "ab" });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "[]c"
+    description = aDescription + "deleting 'ab' with pressing Delete";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, removedLength: 2, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "[]"
+    description = aDescription + "deleting following 'c' with pressing Delete";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, removedLength: 1, addedLength: kLFLen });
+    checkPositionChangeNotification(notifications[1], description);
+    dumpUnexpectedNotifications(description, 2);
+
+    // "abc[]"
+    synthesizeKey("a", {}, win, callback);
+    synthesizeKey("b", {}, win, callback);
+    synthesizeKey("c", {}, win, callback);
+    await flushNotifications();
+
+    // "ab[]"
+    description = aDescription + "deleting 'c' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 2 + offsetAtContainer, removedLength: 1, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "[ab]"
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "[]"
+    description = aDescription + "deleting 'ab' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, removedLength: 2, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "abcd[]"
+    synthesizeKey("a", {}, win, callback);
+    synthesizeKey("b", {}, win, callback);
+    synthesizeKey("c", {}, win, callback);
+    synthesizeKey("d", {}, win, callback);
+    await flushNotifications();
+
+    // "a[bc]d"
+    synthesizeKey("KEY_ArrowLeft", {}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "a[]d"
+    description = aDescription + "deleting 'bc' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1 + offsetAtContainer, removedLength: 2, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 1 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "a[bc]d"
+    synthesizeKey("b", {}, win, callback);
+    synthesizeKey("c", {}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "aB[]d"
+    description = aDescription + "replacing 'bc' with 'B' with pressing Shift+B";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("B", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 1 + offsetAtContainer, removedLength: 2, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 2 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "aB<br>[]d" or "<block>aB</block><block>[]d</block>"
+    description = aDescription + "inserting a line break after 'B' with pressing Enter";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Enter", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    if (isDefaultParagraphSeparatorBlock) {
+      // Splitting current block causes removing "d</block>" and inserting "</block><block>d</block>".
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer + "aB".length,
+        removedLength: getNativeText("d\n").length,
+        addedLength: getNativeText("\nd\n").length,
+      });
+    } else {
+      // Inserting <br> causes removing "d" and inserting "<br>d"
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer + "aB".length,
+        removedLength: "d".length,
+        addedLength: getNativeText("\nd").length,
+      });
+    }
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("aB\n").length + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "aB[]d"
+    description = aDescription + "removing a line break after 'B' with pressing Backspace";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Backspace", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    if (isDefaultParagraphSeparatorBlock) {
+      // Joining two blocks causes removing "aB</block><block>d</block>" and inserting "aBd</block>"
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer,
+        removedLength: getNativeText("aB\nd\n").length,
+        addedLength: getNativeText("aBd\n").length,
+      });
+      checkSelectionChangeNotification(notifications[1], description, { offset: 2 + offsetAtContainer, text: "" });
+      checkPositionChangeNotification(notifications[2], description);
+      dumpUnexpectedNotifications(description, 3);
+    } else {
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer + "aB".length,
+        removedLength: kLFLen,
+        addedLength: 0,
+      });
+      is(notifications.length, 3, description + " should cause 3 notifications");
+      is(notifications[1] && notifications[1].type, "notify-selection-change", description + " should cause selection change notification");
+      is(notifications[2] && notifications[2].type, "notify-position-change", description + " should cause position change notification");
+    }
+
+    // "a[B]d"
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await flushNotifications();
+
+    // "a<br>[]d" or "<block>a</block><block>[]d</block>"
+    description = aDescription + "replacing 'B' with a line break with pressing Enter";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Enter", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    if (isDefaultParagraphSeparatorBlock) {
+      // Splitting current block causes removing "Bd</block>" and inserting "</block><block>d</block>".
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer + "a".length,
+        removedLength: getNativeText("Bd\n").length,
+        addedLength: getNativeText("\nd\n").length,
+      });
+    } else {
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer + "a".length,
+        removedLength: "B".length,
+        addedLength: kLFLen,
+      });
+    }
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("a\n").length + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "a[<br>]d" or "<block>a[</block><block>]d</block>"
+    description = aDescription + "selecting '\\n' with pressing Shift+ArrowLeft";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_ArrowLeft", {shiftKey: true}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkSelectionChangeNotification(notifications[0], description, { offset: 1 + offsetAtContainer, text: kLF, reversed: true });
+    dumpUnexpectedNotifications(description, 1);
+
+    // "a[]d"
+    description = aDescription + "removing selected '\\n' with pressing Delete";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    if (isDefaultParagraphSeparatorBlock) {
+      // Joining the blocks causes removing "a</block><block>d</block>" and inserting "<block>ad</block>".
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer,
+        removedLength: getNativeText("a\nd\n").length,
+        addedLength: getNativeText("ad\n").length,
+      });
+    } else {
+      checkTextChangeNotification(notifications[0], description, {
+        offset: offsetAtContainer + "a".length,
+        removedLength: kLFLen,
+        addedLength: 0,
+      });
+    }
+    checkSelectionChangeNotification(notifications[1], description, { offset: 1 + offsetAtContainer, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5</div>"
+    description = aDescription + "inserting HTML which has nested block elements";
+    waitNotifications = promiseReceiveNotifications();
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5</div>";
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    // There is <br> after the end of the line.  Therefore, removed length includes a line breaker length.
+    if (isDefaultParagraphSeparatorBlock) {
+      checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer - kLFLen, removedLength: getNativeText("\nad\n").length, addedLength: getNativeText("\n1\n2\n345").length });
+    } else {
+      checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtContainer, removedLength: 2 + kLFLen, addedLength: getNativeText("\n1\n2\n345").length });
+    }
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1[<div>2<div>3</div>4</div>]5</div>" and removing selection
+    sel.setBaseAndExtent(aElement.firstChild.firstChild, 1, aElement.firstChild.childNodes.item(2), 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>15</div>", description + " should remove '<div>2<div>3</div>4</div>'");
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1").length + offsetAtStart, removedLength: getNativeText("\n2\n34").length, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1[<div>2<div>3</div>]4</div>5</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5</div>";
+    sel.setBaseAndExtent(aElement.firstChild.firstChild, 1, aElement.firstChild.childNodes.item(1).childNodes.item(2), 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (partially #1) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>145</div>", description + " should remove '<div>2<div>3</div></div>'");
+    // It causes removing '<div>2<div>3</div>4</div>' and inserting '4'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1").length + offsetAtStart, removedLength: getNativeText("\n2\n34").length, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1[<div>2<div>]3</div>4</div>5</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5</div>";
+    sel.setBaseAndExtent(aElement.firstChild.firstChild, 1, aElement.firstChild.childNodes.item(1).childNodes.item(1).firstChild, 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (partially #2) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>13<div>4</div>5</div>", description + " should remove '<div>2</div>'");
+    // It causes removing '1<div>2<div>3</div></div>' and inserting '13<div>'.
+    checkTextChangeNotification(notifications[0], description, { offset: kLFLen + offsetAtStart, removedLength: getNativeText("1\n2\n3").length, addedLength: getNativeText("13\n").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1<div>2<div>3[</div>4</div>]5</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5</div>";
+    sel.setBaseAndExtent(aElement.firstChild.childNodes.item(1).childNodes.item(1).firstChild, 1, aElement.firstChild.childNodes.item(2), 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (partially #3) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>1<div>2<div>35</div></div></div>", description + " should remove '4'");
+    // It causes removing '45' and inserting '5'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1\n2\n3").length + offsetAtStart, removedLength: 2, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1\n2\n3").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5<div>6<div>7</div>8</div>9</div>"
+    description = aDescription + "inserting HTML which has a pair of nested block elements";
+    waitNotifications = promiseReceiveNotifications();
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5<div>6<div>7</div>8</div>9</div>";
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    checkTextChangeNotification(notifications[0], description, { offset: 0 + offsetAtStart, removedLength: getNativeText("\n1\n2\n35").length, addedLength: getNativeText("\n1\n2\n345\n6\n789").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: 0 + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1<div>2<div>3[</div>4</div>5<div>6<div>]7</div>8</div>9</div>" and removing selection
+    sel.setBaseAndExtent(aElement.firstChild.childNodes.item(1).childNodes.item(1).firstChild, 1, aElement.firstChild.childNodes.item(3).childNodes.item(1).firstChild, 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (between same level descendants) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>1<div>2<div>37</div></div><div>8</div>9</div>", description + " should remove '456<div>7'");
+    // It causes removing '<div>3</div>4</div>5<div>6<div>7</div>' and inserting '<div>37</div><div>'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1\n2").length + offsetAtStart, removedLength: getNativeText("\n345\n6\n7").length, addedLength: getNativeText("\n37\n").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1\n2\n3").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1<div>2[<div>3</div>4</div>5<div>6<div>]7</div>8</div>9</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5<div>6<div>7</div>8</div>9</div>";
+    sel.setBaseAndExtent(aElement.firstChild.childNodes.item(1).firstChild, 1, aElement.firstChild.childNodes.item(3).childNodes.item(1).firstChild, 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (between different level descendants #1) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>1<div>27</div><div>8</div>9</div>", description + " should remove '<div>2<div>3</div>4</div>5<div>6<div>7</div>'");
+    // It causes removing '<div>2<div>3</div>4</div>5<div>6<div>7</div>' and inserting '<div>27</div>'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1").length + offsetAtStart, removedLength: getNativeText("\n2\n345\n6\n7").length, addedLength: getNativeText("\n27\n").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1\n2").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1<div>2[<div>3</div>4</div>5<div>6<div>7</div>8</div>]9</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5<div>6<div>7</div>8</div>9</div>";
+    sel.setBaseAndExtent(aElement.firstChild.childNodes.item(1).firstChild, 1, aElement.firstChild.childNodes.item(4), 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (between different level descendants #2) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>1<div>29</div></div>", description + " should remove '<div>3</div>4</div>5<div>6<div>7</div>8</div>'");
+    // It causes removing '<div>3</div>4</div>5</div>6<div>7</div>8</div>9' and inserting '9</div>'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1\n2").length + offsetAtStart, removedLength: getNativeText("\n345\n6\n789").length, addedLength: 1 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1\n2").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1<div>2<div>3[</div>4</div>5<div>]6<div>7</div>8</div>9</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5<div>6<div>7</div>8</div>9</div>";
+    sel.setBaseAndExtent(aElement.firstChild.childNodes.item(1).childNodes.item(1).firstChild, 1, aElement.firstChild.childNodes.item(3).firstChild, 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (between different level descendants #3) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>1<div>2<div>36<div>7</div>8</div></div>9</div>", description + " should remove '<div>36<div>7</div>8</div>'");
+    // It causes removing '<div>3</div>4</div>5<div>6<div>7</div>8</div>' and inserting '<div>36<div>7</div>8</div>'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1\n2").length + offsetAtStart, removedLength: getNativeText("\n345\n6\n78").length, addedLength: getNativeText("\n36\n78").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1\n2\n3").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<div>1<div>2<div>3[</div>4</div>5<div>6<div>7</div>8</div>]9</div>" and removing selection
+    aElement.innerHTML = "<div>1<div>2<div>3</div>4</div>5<div>6<div>7</div>8</div>9</div>";
+    sel.setBaseAndExtent(aElement.firstChild.childNodes.item(1).childNodes.item(1).firstChild, 1, aElement.firstChild.childNodes.item(4), 0);
+    await flushNotifications();
+    description = aDescription + "deleting child nodes (between different level descendants #4) with pressing Delete key";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Delete", {}, win, callback);
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<div>1<div>2<div>39</div></div></div>", description + " should remove '</div>4</div>5<div>6<div>7</div>8</div>'");
+    // It causes removing '</div>4</div>5<div>6<div>7</div>8</div>' and inserting '<div>36<div>7</div>8</div>'.
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\n1\n2\n3").length + offsetAtStart, removedLength: getNativeText("45\n6\n789").length, addedLength: getNativeText("9").length });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\n1\n2\n3").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<p>abc</p><p><br></p><p>{<br>}</p>" and removing second paragraph with DOM API
+    aElement.innerHTML = "<p>abc</p><p><br></p><p><br></p>";
+    sel.collapse(aElement.firstChild.nextSibling.nextSibling, 0);
+    await flushNotifications();
+    description = aDescription + "deleting previous paragraph with DOM API";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Unidentified", { code: "" }, win, callback);  // For setting the callback to recode notifications
+    aElement.firstChild.nextSibling.remove();
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<p>abc</p><p><br></p>", description + " the second paragraph should've been removed");
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\nabc").length + offsetAtStart, removedLength: getNativeText("\n\n").length, addedLength: 0 });
+    checkSelectionChangeNotification(notifications[1], description, { offset: getNativeText("\nabc\n").length + offsetAtStart, text: "" });
+    checkPositionChangeNotification(notifications[2], description);
+    dumpUnexpectedNotifications(description, 3);
+
+    // "<p>abc</p><p>{<br>}</p><p><br></p>" and removing last paragraph with DOM API
+    aElement.innerHTML = "<p>abc</p><p><br></p><p><br></p>";
+    sel.collapse(aElement.firstChild.nextSibling, 0);
+    await flushNotifications();
+    description = aDescription + "deleting next paragraph with DOM API";
+    waitNotifications = promiseReceiveNotifications();
+    synthesizeKey("KEY_Unidentified", { code: "" }, win, callback);  // For setting the callback to recode notifications
+    aElement.firstChild.nextSibling.nextSibling.remove();
+    await waitNotifications;
+    ensureToRemovePrecedingPositionChangeNotification();
+    is(aElement.innerHTML, "<p>abc</p><p><br></p>", description + " the last paragraph should've been removed");
+    checkTextChangeNotification(notifications[0], description, { offset: getNativeText("\nabc\n\n").length + offsetAtStart, removedLength: getNativeText("\n\n").length, addedLength: 0 });
+    checkPositionChangeNotification(notifications[1], description);
+    dumpUnexpectedNotifications(description, 2);
+  }
+
+  await testWithPlaintextEditor("runIMEContentObserverTest with input element: ", input, false);
+  await testWithPlaintextEditor("runIMEContentObserverTest with textarea element: ", textarea, true);
+  await testWithHTMLEditor("runIMEContentObserverTest with contenteditable (defaultParagraphSeparator is br): ", contenteditable, "br");
+  await testWithHTMLEditor("runIMEContentObserverTest with contenteditable (defaultParagraphSeparator is p): ", contenteditable, "p");
+  await testWithHTMLEditor("runIMEContentObserverTest with contenteditable (defaultParagraphSeparator is div): ", contenteditable, "div");
+  // XXX Due to the difference of HTML editor behavior between designMode and contenteditable,
+  //     testWithHTMLEditor() gets some unexpected behavior.  However, IMEContentObserver is
+  //     not depend on editor's detail.  So, we should investigate this issue later.  It's not
+  //     so important for now.
+  // await testWithHTMLEditor("runIMEContentObserverTest in designMode (defaultParagraphSeparator is br): ", iframe2.contentDocument.body, "br");
+  // await testWithHTMLEditor("runIMEContentObserverTest in designMode (defaultParagraphSeparator is p): ", iframe2.contentDocument.body, "p");
+  // await testWithHTMLEditor("runIMEContentObserverTest in designMode (defaultParagraphSeparator is div): ", iframe2.contentDocument.body, "div");
+}
+
+async function runPasswordMaskDelayTest() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["editor.password.mask_delay", 600],
+          ["editor.password.testing.mask_delay", true],
+         ],
+  });
+
+  let iframe5 = document.getElementById("iframe5");
+  let iframe6 = document.getElementById("iframe6");
+  let inputWindow = iframe5.contentWindow;
+  let passwordWindow = iframe6.contentWindow;
+
+  let inputElement = iframe5.contentDocument.getElementById("input");
+  let passwordElement = iframe6.contentDocument.getElementById("password");
+
+  const kMask = passwordElement.editor.passwordMask;
+
+  function promiseAllPasswordMasked() {
+    return new Promise(resolve => {
+      passwordElement.addEventListener("MozLastInputMasked", resolve, {once: true});
+    });
+  }
+
+  function checkSnapshots(aResult, aReference, aMatch, aDescription) {
+    let [correct, data1, data2] = compareSnapshots(aResult, aReference, true);
+    is(correct, aMatch, `${aDescription}\nREFTEST   IMAGE 1 (TEST): ${data1}\nREFTEST   IMAGE 2 (REFERENCE): ${data2}`);
+  }
+
+  // First character input
+  passwordElement.value = "";
+  passwordElement.focus();
+  let waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeKey("a");
+  let unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  let maskedResult = await snapshotWindow(passwordWindow, true);
+
+  inputElement.value = "a";
+  inputElement.focus();
+  inputElement.setSelectionRange(1, 1);
+  let unmaskedReference = await snapshotWindow(inputWindow, true);
+  inputElement.value = kMask;
+  inputElement.setSelectionRange(1, 1);
+  let maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): first inputted character should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): first inputted character should be masked after a while");
+
+  // Second character input
+  passwordElement.value = "a";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(1, 1);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeKey("b");
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+
+  inputElement.value = `${kMask}b`;
+  inputElement.focus();
+  inputElement.setSelectionRange(2, 2);
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  inputElement.value = `${kMask}${kMask}`;
+  inputElement.setSelectionRange(2, 2);
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): second inputted character should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): second inputted character should be masked after a while");
+
+  // Typing new character should mask the previous unmasked characters
+  passwordElement.value = "ab";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(2, 2);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeKey("c");
+  synthesizeKey("d");
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+
+  inputElement.value = `${kMask}${kMask}${kMask}d`;
+  inputElement.focus();
+  inputElement.setSelectionRange(4, 4);
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  inputElement.value = `${kMask}${kMask}${kMask}${kMask}`;
+  inputElement.setSelectionRange(4, 4);
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): forth character input should mask the third character");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): forth inputted character should be masked after a while");
+
+  // Typing middle of password should unmask the last input character
+  passwordElement.value = "abcd";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(2, 2);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeKey("e");
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+
+  inputElement.value = `${kMask}${kMask}e${kMask}${kMask}`;
+  inputElement.focus();
+  inputElement.setSelectionRange(3, 3);
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  inputElement.value = `${kMask}${kMask}${kMask}${kMask}${kMask}`;
+  inputElement.setSelectionRange(3, 3);
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): inserted character should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): inserted character should be masked after a while");
+
+  // Composition string should be unmasked for a while, and shouldn't be committed at masking
+  passwordElement.value = "ab";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(1, 1);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeCompositionChange(
+    { composition:
+      { string: "c",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+  is(getEditor(passwordElement).composing, true,
+     "runPasswordMaskDelayTest(): composition shouldn't be commited at masking the composing string #1");
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  inputElement.value = `${kMask}${kMask}`;
+  inputElement.focus();
+  inputElement.setSelectionRange(1, 1);
+  synthesizeCompositionChange(
+    { composition:
+      { string: "c",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  synthesizeCompositionChange(
+    { composition:
+      { string: kMask,
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): composing character should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): composing character should be masked after a while");
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  // Updating composition string should unmask the composition string for a while
+  passwordElement.value = "ab";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(1, 1);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeCompositionChange(
+    { composition:
+      { string: "c",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  await waitForMaskingLastInput;
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeCompositionChange(
+    { composition:
+      { string: "d",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+  is(getEditor(passwordElement).composing, true,
+     "runPasswordMaskDelayTest(): composition shouldn't be commited at masking the composing string #2");
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  inputElement.value = `${kMask}${kMask}`;
+  inputElement.focus();
+  inputElement.setSelectionRange(1, 1);
+  synthesizeCompositionChange(
+    { composition:
+      { string: "d",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  synthesizeCompositionChange(
+    { composition:
+      { string: kMask,
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): updated composing character should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): updated composing character should be masked after a while");
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  // Composing multi-characters should be unmasked for a while.
+  passwordElement.value = "ab";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(1, 1);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeCompositionChange(
+    { composition:
+      { string: "c",
+        clauses: [{ length: 1, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 1, length: 0 },
+    });
+  await waitForMaskingLastInput;
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeCompositionChange(
+    { composition:
+      { string: "cd",
+        clauses: [{ length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 2, length: 0 },
+    });
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+  is(getEditor(passwordElement).composing, true,
+     "runPasswordMaskDelayTest(): composition shouldn't be commited at masking the composing string #3");
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  inputElement.value = `${kMask}${kMask}`;
+  inputElement.focus();
+  inputElement.setSelectionRange(1, 1);
+  synthesizeCompositionChange(
+    { composition:
+      { string: "cd",
+        clauses: [{ length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 2, length: 0 },
+    });
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  synthesizeCompositionChange(
+    { composition:
+      { string: `${kMask}${kMask}`,
+        clauses: [{ length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 2, length: 0 },
+    });
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): all of composing string should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): all of composing string should be masked after a while");
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+
+  // Committing composition should make the commit string unmasked.
+  passwordElement.value = "ab";
+  passwordElement.focus();
+  passwordElement.setSelectionRange(1, 1);
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeCompositionChange(
+    { composition:
+      { string: "cd",
+        clauses: [{ length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE }],
+      },
+      caret: { start: 2, length: 0 },
+    });
+  await waitForMaskingLastInput;
+  waitForMaskingLastInput = promiseAllPasswordMasked();
+  synthesizeComposition({ type: "compositioncommitasis", key: { key: "KEY_Enter" } });
+  unmaskedResult = await snapshotWindow(passwordWindow, true);
+  await waitForMaskingLastInput;
+  maskedResult = await snapshotWindow(passwordWindow, true);
+
+  inputElement.value = `${kMask}cd${kMask}`;
+  inputElement.focus();
+  inputElement.setSelectionRange(3, 3);
+  unmaskedReference = await snapshotWindow(inputWindow, true);
+  inputElement.value = `${kMask}${kMask}${kMask}${kMask}`;
+  inputElement.setSelectionRange(3, 3);
+  maskedReference = await snapshotWindow(inputWindow, true);
+  checkSnapshots(unmaskedResult, unmaskedReference, true,
+                 "runPasswordMaskDelayTest(): committed string should be unmasked for a while");
+  checkSnapshots(maskedResult, maskedReference, true,
+                 "runPasswordMaskDelayTest(): committed string should be masked after a while");
+}
+
+async function runInputModeTest()
+{
+  let result = [];
+
+  function handler(aEvent)
+  {
+    result.push(aEvent);
+  }
+
+  textarea.inputMode = "text";
+  textarea.value = "";
+  textarea.focus();
+
+  textarea.addEventListener("compositionupdate", handler, true);
+  textarea.addEventListener("compositionend", handler, true);
+
+  synthesizeCompositionChange({
+    composition: {string: "a ", clauses: [{length: 2, attr: COMPOSITION_ATTR_RAW_CLAUSE}]},
+  });
+
+  is(result[0].type, "compositionupdate", "Set initial composition for inputmode test");
+  result = [];
+
+  textarea.inputMode = "tel";
+  is(result.length, 0, "No compositonend event even if inputmode is updated");
+
+  // Clean up
+  synthesizeComposition({ type: "compositioncommitasis" });
+  textarea.inputMode = "";
+  textarea.value = "";
+  textarea.removeEventListener("compositionupdate", handler, true);
+  textarea.removeEventListener("compositionend", handler, true);
+}
+
+
+async function runTest()
+{
+  window.addEventListener("unload", window.arguments[0].SimpleTest.finish, {once: true, capture: true});
+
+  contenteditable = document.getElementById("iframe4").contentDocument.getElementById("contenteditable");
+  windowOfContenteditable = document.getElementById("iframe4").contentWindow;
+  textareaInFrame = iframe.contentDocument.getElementById("textarea");
+
+  contenteditableBySpan = document.getElementById("iframe7").contentDocument.getElementById("contenteditable");
+  windowOfContenteditableBySpan = document.getElementById("iframe7").contentWindow;
+
+  await runIMEContentObserverTest();
+  await runEditorReframeTests();
+  await runAsyncForceCommitTest();
+  await runRemoveContentTest();
+  await runPanelTest();
+  await runPasswordMaskDelayTest();
+  await runBug1584901Test();
+  await runInputModeTest();
+  await runCompositionTest();
+  await runCompositionCommitTest();
+  await runSetSelectionEventTest();
+
+  runUndoRedoTest();
+  runCompositionCommitAsIsTest();
+  runCompositionEventTest();
+  runCompositionTestWhoseTextNodeModified();
+  runQueryTextRectInContentEditableTest();
+  runCharAtPointTest(textarea, "textarea in the document");
+  runCharAtPointAtOutsideTest();
+  runQueryTextContentEventTest();
+  runQuerySelectionEventTest();
+  runQueryIMESelectionTest();
+  runQueryContentEventRelativeToInsertionPoint();
+  runQueryPasswordTest();
+  runCSSTransformTest();
+  runBug722639Test();
+  runBug1375825Test();
+  runBug1530649Test();
+  runBug1571375Test();
+  runBug1675313Test();
+  runCommitCompositionWithSpaceKey();
+  runCompositionWithSelectionChange();
+  runForceCommitTest();
+  runNestedSettingValue();
+  runBug811755Test();
+  runIsComposingTest();
+  runRedundantChangeTest();
+  runNotRedundantChangeTest();
+  runNativeLineBreakerTest();
+  runControlCharTest();
+  runFrameTest();
+  runMaxLengthTest();
+
+  window.close();
+}
+
+window.arguments[0].SimpleTest.waitForFocus(runTest, window);
+
+]]>
+</script>
+
+</window>
diff --git a/widget/tests/window_imestate_iframes.html b/widget/tests/window_imestate_iframes.html
new file mode 100644
index 0000000000..c8b182977f
--- /dev/null
+++ b/widget/tests/window_imestate_iframes.html
@@ -0,0 +1,358 @@
+<html>
+<head>
+  <title>Test for IME state controling and focus moving for iframes</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css"
+          href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+  <style type="text/css">
+    iframe {
+      border: none;
+      height: 100px;
+    }
+  </style>
+</head>
+<body onunload="onUnload();">
+<p id="display">
+  <!-- Use input[readonly] because it isn't affected by the partial focus
+       movement on Mac -->
+  <input id="prev" readonly><br>
+  <iframe id="iframe_not_editable"
+          src="data:text/html,&lt;html&gt;&lt;body&gt;&lt;input id='editor'&gt;&lt;/body&gt;&lt;/html&gt;"></iframe><br>
+
+  <!-- Testing IME state and focus movement, the anchor elements cannot get focus -->
+  <iframe id="iframe_html"
+          src="data:text/html,&lt;html id='editor' contenteditable='true'&gt;&lt;body&gt;&lt;a href='about:blank'&gt;about:blank;&lt;/a&gt;&lt;/body&gt;&lt;/html&gt;"></iframe><br>
+  <iframe id="iframe_designMode"
+          src="data:text/html,&lt;body id='editor' onload='document.designMode=&quot;on&quot;;'&gt;&lt;a href='about:blank'&gt;about:blank;&lt;/a&gt;&lt;/body&gt;"></iframe><br>
+  <iframe id="iframe_body"
+          src="data:text/html,&lt;body id='editor' contenteditable='true'&gt;&lt;a href='about:blank'&gt;about:blank;&lt;/a&gt;&lt;/body&gt;"></iframe><br>
+  <iframe id="iframe_p"
+          src="data:text/html,&lt;body&gt;&lt;p id='editor' contenteditable='true'&gt;&lt;a href='about:blank'&gt;about:blank;&lt;/a&gt;&lt;/p&gt;&lt;/body&gt;"></iframe><br>
+
+  <input id="next" readonly><br>
+</p>
+<script class="testbody" type="application/javascript">
+
+window.opener.SimpleTest.waitForFocus(runTests, window);
+
+function ok(aCondition, aMessage) {
+  window.opener.SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage) {
+  window.opener.SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function onUnload() {
+  window.opener.onFinish();
+}
+
+var gFocusObservingElement = null;
+var gBlurObservingElement = null;
+
+function onFocus(aEvent) {
+  if (aEvent.target != gFocusObservingElement) {
+    return;
+  }
+  ok(gFocusObservingElement.willFocus,
+     "focus event is fired on unexpected element");
+  gFocusObservingElement.willFocus = false;
+}
+
+function onBlur(aEvent) {
+  if (aEvent.target != gBlurObservingElement) {
+    return;
+  }
+  ok(gBlurObservingElement.willBlur,
+     "blur event is fired on unexpected element");
+  gBlurObservingElement.willBlur = false;
+}
+
+function observeFocusBlur(aNextFocusedNode, aWillFireFocusEvent,
+                          aNextBlurredNode, aWillFireBlurEvent) {
+  if (gFocusObservingElement) {
+    if (gFocusObservingElement.willFocus) {
+      ok(false, "focus event was never fired on " + gFocusObservingElement);
+    }
+    gFocusObservingElement.removeEventListener("focus", onFocus, true);
+    gFocusObservingElement.willFocus = NaN;
+    gFocusObservingElement = null;
+  }
+  if (gBlurObservingElement) {
+    if (gBlurObservingElement.willBlur) {
+      ok(false, "blur event was never fired on " + gBlurObservingElement);
+    }
+    gBlurObservingElement.removeEventListener("blur", onBlur, true);
+    gBlurObservingElement.willBlur = NaN;
+    gBlurObservingElement = null;
+  }
+  if (aNextFocusedNode) {
+    gFocusObservingElement = aNextFocusedNode;
+    gFocusObservingElement.willFocus = aWillFireFocusEvent;
+    gFocusObservingElement.addEventListener("focus", onFocus, true);
+  }
+  if (aNextBlurredNode) {
+    gBlurObservingElement = aNextBlurredNode;
+    gBlurObservingElement.willBlur = aWillFireBlurEvent;
+    gBlurObservingElement.addEventListener("blur", onBlur, true);
+  }
+}
+
+function runTests() {
+  var utils = window.windowUtils;
+  var fm = Services.focus;
+
+  var iframe, editor, root;
+  var prev = document.getElementById("prev");
+  var next = document.getElementById("next");
+  var html = document.documentElement;
+
+  function resetFocusToInput(aDescription) {
+    observeFocusBlur(null, false, null, false);
+    prev.focus();
+    is(fm.focusedElement, prev,
+       "input#prev[readonly] element didn't get focus: " + aDescription);
+    is(utils.IMEStatus, utils.IME_STATUS_DISABLED,
+       "IME enabled on input#prev[readonly]: " + aDescription);
+  }
+
+  function resetFocusToParentHTML(aDescription) {
+    observeFocusBlur(null, false, null, false);
+    html.focus();
+    is(fm.focusedElement, html,
+       "Parent html element didn't get focus: " + aDescription);
+    is(utils.IMEStatus, utils.IME_STATUS_DISABLED,
+       "IME enabled on parent html element: " + aDescription);
+  }
+
+  function testTabKey(aForward,
+                      aNextFocusedNode, aWillFireFocusEvent,
+                      aNextBlurredNode, aWillFireBlurEvent,
+                      aIMEShouldBeEnabled, aTestingCaseDescription) {
+    observeFocusBlur(aNextFocusedNode, aWillFireFocusEvent,
+                     aNextBlurredNode, aWillFireBlurEvent);
+    synthesizeKey("VK_TAB", { shiftKey: !aForward });
+    var description = "Tab key test: ";
+    if (!aForward) {
+      description = "Shift-" + description;
+    }
+    description += aTestingCaseDescription + ": ";
+    is(fm.focusedElement, aNextFocusedNode,
+       description + "didn't move focus as expected");
+    is(utils.IMEStatus,
+       aIMEShouldBeEnabled ?
+         utils.IME_STATUS_ENABLED : utils.IME_STATUS_DISABLED,
+       description + "didn't set IME state as expected");
+  }
+
+  function testMouseClick(aNextFocusedNode, aWillFireFocusEvent,
+                          aWillAllNodeLostFocus,
+                          aNextBlurredNode, aWillFireBlurEvent,
+                          aIMEShouldBeEnabled, aTestingCaseDescription) {
+    observeFocusBlur(aNextFocusedNode, aWillFireFocusEvent,
+                     aNextBlurredNode, aWillFireBlurEvent);
+    // We're relying on layout inside the iframe being up to date, so make it so
+    iframe.contentDocument.documentElement.getBoundingClientRect();
+    synthesizeMouse(iframe, 10, 80, { });
+    var description = "Click test: " + aTestingCaseDescription + ": ";
+    is(fm.focusedElement, !aWillAllNodeLostFocus ? aNextFocusedNode : null,
+       description + "didn't move focus as expected");
+    is(utils.IMEStatus,
+       aIMEShouldBeEnabled ?
+         utils.IME_STATUS_ENABLED : utils.IME_STATUS_DISABLED,
+       description + "didn't set IME state as expected");
+  }
+
+  function testOnEditorFlagChange(aDescription, aIsInDesignMode) {
+    const kReadonly = Ci.nsIEditor.eEditorReadonlyMask;
+    var description = "testOnEditorFlagChange: " + aDescription;
+    resetFocusToParentHTML(description);
+    var htmlEditor = iframe.contentWindow.docShell.editor;
+    var e = aIsInDesignMode ? root : editor;
+    e.focus();
+    is(fm.focusedElement, e,
+       description + ": focus() of editor didn't move focus as expected");
+    is(utils.IMEStatus, utils.IME_STATUS_ENABLED,
+       description + ": IME isn't enabled when the editor gets focus");
+    var flags = htmlEditor.flags;
+    htmlEditor.flags |= kReadonly;
+    is(fm.focusedElement, e,
+       description + ": when editor becomes readonly, focus moved unexpectedly");
+    is(utils.IMEStatus, utils.IME_STATUS_DISABLED,
+       description + ": when editor becomes readonly, IME is still enabled");
+    htmlEditor.flags = flags;
+    is(fm.focusedElement, e,
+       description + ": when editor becomes read-write, focus moved unexpectedly");
+    is(utils.IMEStatus, utils.IME_STATUS_ENABLED,
+       description + ": when editor becomes read-write, IME is still disabled");
+  }
+
+  // hide all iframes
+  document.getElementById("iframe_not_editable").style.display = "none";
+  document.getElementById("iframe_html").style.display = "none";
+  document.getElementById("iframe_designMode").style.display = "none";
+  document.getElementById("iframe_body").style.display = "none";
+  document.getElementById("iframe_p").style.display = "none";
+
+  // non editable HTML element and input element can get focus.
+  iframe = document.getElementById("iframe_not_editable");
+  iframe.style.display = "inline";
+  editor = iframe.contentDocument.getElementById("editor");
+  root = iframe.contentDocument.documentElement;
+  resetFocusToInput("initializing for iframe_not_editable");
+
+  testTabKey(true, root, false, prev, true,
+             false, "input#prev[readonly] -> html");
+  testTabKey(true, editor, true, root, false,
+             true, "html -> input in the subdoc");
+  testTabKey(true, next, true, editor, true,
+             false, "input in the subdoc -> input#next[readonly]");
+  testTabKey(false, editor, true, next, true,
+             true, "input#next[readonly] -> input in the subdoc");
+  testTabKey(false, root, false, editor, true,
+             false, "input in the subdoc -> html");
+  testTabKey(false, prev, true, root, false,
+             false, "html -> input#next[readonly]");
+
+  iframe.style.display = "none";
+
+  // HTML element (of course, it's root) must enables IME.
+  iframe = document.getElementById("iframe_html");
+  iframe.style.display = "inline";
+  editor = iframe.contentDocument.getElementById("editor");
+  root = iframe.contentDocument.documentElement;
+  resetFocusToInput("initializing for iframe_html");
+
+  testTabKey(true, editor, true, prev, true,
+             true, "input#prev[readonly] -> html[contentediable=true]");
+  testTabKey(true, next, true, editor, true,
+             false, "html[contentediable=true] -> input#next[readonly]");
+  testTabKey(false, editor, true, next, true,
+             true, "input#next[readonly] -> html[contentediable=true]");
+  testTabKey(false, prev, true, editor, true,
+             false, "html[contenteditable=true] -> input[readonly]");
+
+  prev.style.display = "none";
+  resetFocusToParentHTML("testing iframe_html");
+  testTabKey(true, editor, true, html, false,
+             true, "html of parent -> html[contentediable=true]");
+  testTabKey(false, html, false, editor, true,
+             false, "html[contenteditable=true] -> html of parent");
+  prev.style.display = "inline";
+  resetFocusToInput("after parent html <-> html[contenteditable=true]");
+
+  testMouseClick(editor, true, false, prev, true, true, "iframe_html");
+
+  testOnEditorFlagChange("html[contentediable=true]", false);
+
+  iframe.style.display = "none";
+
+  // designMode should behave like <html contenteditable="true"></html>
+  // but focus/blur events shouldn't be fired on its root element because
+  // any elements shouldn't be focused state in designMode.
+  iframe = document.getElementById("iframe_designMode");
+  iframe.style.display = "inline";
+  iframe.contentDocument.designMode = "on";
+  editor = iframe.contentDocument.getElementById("editor");
+  root = iframe.contentDocument.documentElement;
+  resetFocusToInput("initializing for iframe_designMode");
+
+  testTabKey(true, root, false, prev, true,
+             true, "input#prev[readonly] -> html in designMode");
+  testTabKey(true, next, true, root, false,
+             false, "html in designMode -> input#next[readonly]");
+  testTabKey(false, root, false, next, true,
+             true, "input#next[readonly] -> html in designMode");
+  testTabKey(false, prev, true, root, false,
+             false, "html in designMode -> input#prev[readonly]");
+
+  prev.style.display = "none";
+  resetFocusToParentHTML("testing iframe_designMode");
+  testTabKey(true, root, false, html, false,
+             true, "html of parent -> html in designMode");
+  testTabKey(false, html, false, root, false,
+             false, "html in designMode -> html of parent");
+  prev.style.display = "inline";
+  resetFocusToInput("after parent html <-> html in designMode");
+
+  testMouseClick(editor, false, true, prev, true, true, "iframe_designMode");
+
+  testOnEditorFlagChange("html in designMode", true);
+
+  iframe.style.display = "none";
+
+  // When there is no HTML element but the BODY element is editable,
+  // the body element should get focus and enables IME.
+  iframe = document.getElementById("iframe_body");
+  iframe.style.display = "inline";
+  editor = iframe.contentDocument.getElementById("editor");
+  root = iframe.contentDocument.documentElement;
+  resetFocusToInput("initializing for iframe_body");
+
+  testTabKey(true, editor, true, prev, true,
+             true, "input#prev[readonly] -> body[contentediable=true]");
+  testTabKey(true, next, true, editor, true,
+             false, "body[contentediable=true] -> input#next[readonly]");
+  testTabKey(false, editor, true, next, true,
+             true, "input#next[readonly] -> body[contentediable=true]");
+  testTabKey(false, prev, true, editor, true,
+             false, "body[contenteditable=true] -> input#prev[readonly]");
+
+  prev.style.display = "none";
+  resetFocusToParentHTML("testing iframe_body");
+  testTabKey(true, editor, true, html, false,
+             true, "html of parent -> body[contentediable=true]");
+  testTabKey(false, html, false, editor, true,
+             false, "body[contenteditable=true] -> html of parent");
+  prev.style.display = "inline";
+  resetFocusToInput("after parent html <-> body[contenteditable=true]");
+
+  testMouseClick(editor, true, false, prev, true, true, "iframe_body");
+
+  testOnEditorFlagChange("body[contentediable=true]", false);
+
+  iframe.style.display = "none";
+
+  // When HTML/BODY elements are not editable, focus shouldn't be moved to
+  // the editable content directly.
+  iframe = document.getElementById("iframe_p");
+  iframe.style.display = "inline";
+  editor = iframe.contentDocument.getElementById("editor");
+  root = iframe.contentDocument.documentElement;
+  resetFocusToInput("initializing for iframe_p");
+
+  testTabKey(true, root, false, prev, true,
+             false, "input#prev[readonly] -> html (has p[contenteditable=true])");
+  testTabKey(true, editor, true, root, false,
+             true, "html (has p[contenteditable=true]) -> p[contentediable=true]");
+  testTabKey(true, next, true, editor, true,
+             false, "p[contentediable=true] -> input#next[readonly]");
+  testTabKey(false, editor, true, next, true,
+             true, "input#next[readonly] -> p[contentediable=true]");
+  testTabKey(false, root, false, editor, true,
+             false, "p[contenteditable=true] -> html (has p[contenteditable=true])");
+  testTabKey(false, prev, true, root, false,
+             false, "html (has p[contenteditable=true]) -> input#prev[readonly]");
+  prev.style.display = "none";
+
+  resetFocusToParentHTML("testing iframe_p");
+  testTabKey(true, root, false, html, false,
+             false, "html of parent -> html (has p[contentediable=true])");
+  testTabKey(false, html, false, root, false,
+             false, "html (has p[contentediable=true]) -> html of parent");
+  prev.style.display = "inline";
+  resetFocusToInput("after parent html <-> html (has p[contentediable=true])");
+
+  testMouseClick(root, false, true, prev, true, false, "iframe_p");
+
+  testOnEditorFlagChange("p[contenteditable=true]", false);
+
+  iframe.style.display = "none";
+
+  window.close();
+}
+
+</script>
+</body>
+
+</html>
diff --git a/widget/tests/window_mouse_scroll_win.html b/widget/tests/window_mouse_scroll_win.html
new file mode 100644
index 0000000000..bf90abb1b5
--- /dev/null
+++ b/widget/tests/window_mouse_scroll_win.html
@@ -0,0 +1,1516 @@
+<html lang="en-US"
+      style="font-family: Arial; font-size: 10px; line-height: 16px;">
+<head>
+  <title>Test for mouse scroll handling on Windows</title>
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+  <link rel="stylesheet" type="text/css"
+          href="chrome://mochikit/content/tests/SimpleTest/test.css" />
+</head>
+<body onunload="onUnload();">
+<div id="display" style="width: 5000px; height: 5000px;">
+<p id="p1" style="font-size: 16px; width: 100px; height: 100px;">1st &lt;p&gt;.</p>
+<p id="p2" style="font-size: 32px; width: 100px; height: 100px;">2nd &lt;p&gt;.</p>
+</div>
+<script class="testbody" type="application/javascript">
+
+window.arguments[0].SimpleTest.waitForFocus(prepareTests, window);
+
+const nsIDOMWindowUtils = Ci.nsIDOMWindowUtils;
+
+const WHEEL_PAGESCROLL = 4294967295;
+
+const WM_VSCROLL     = 0x0115;
+const WM_HSCROLL     = 0x0114;
+const WM_MOUSEWHEEL  = 0x020A;
+const WM_MOUSEHWHEEL = 0x020E;
+
+const SB_LINEUP    = 0;
+const SB_LINELEFT  = 0;
+const SB_LINEDOWN  = 1;
+const SB_LINERIGHT = 1;
+const SB_PAGEUP    = 2;
+const SB_PAGELEFT  = 2;
+const SB_PAGEDOWN  = 3;
+const SB_PAGERIGHT = 3;
+
+const SHIFT_L = 0x0100;
+const SHIFT_R = 0x0200;
+const CTRL_L  = 0x0400;
+const CTRL_R  = 0x0800;
+const ALT_L   = 0x1000;
+const ALT_R   = 0x2000;
+
+const DOM_PAGE_SCROLL_DELTA = 32768;
+
+const kSystemScrollSpeedOverridePref = "mousewheel.system_scroll_override.enabled";
+
+const kAltKeyActionPref         = "mousewheel.with_alt.action";
+const kCtrlKeyActionPref        = "mousewheel.with_control.action";
+const kShiftKeyActionPref       = "mousewheel.with_shift.action";
+const kWinKeyActionPref         = "mousewheel.with_meta.action";
+
+const kAltKeyDeltaMultiplierXPref   = "mousewheel.with_alt.delta_multiplier_x";
+const kAltKeyDeltaMultiplierYPref   = "mousewheel.with_alt.delta_multiplier_y";
+const kCtrlKeyDeltaMultiplierXPref  = "mousewheel.with_control.delta_multiplier_x";
+const kCtrlKeyDeltaMultiplierYPref  = "mousewheel.with_control.delta_multiplier_y";
+const kShiftKeyDeltaMultiplierXPref = "mousewheel.with_shift.delta_multiplier_x";
+const kShiftKeyDeltaMultiplierYPref = "mousewheel.with_shift.delta_multiplier_y";
+const kWinKeyDeltaMultiplierXPref   = "mousewheel.with_meta.delta_multiplier_x";
+const kWinKeyDeltaMultiplierYPref   = "mousewheel.with_meta.delta_multiplier_y";
+
+const kEmulateWheelByWMSCROLLPref = "mousewheel.emulate_at_wm_scroll";
+const kVAmountPref                = "mousewheel.windows.vertical_amount_override";
+const kHAmountPref                = "mousewheel.windows.horizontal_amount_override";
+const kTimeoutPref                = "mousewheel.windows.transaction.timeout";
+
+const kMouseLineScrollEvent  = "DOMMouseScroll";
+const kMousePixelScrollEvent = "MozMousePixelScroll";
+
+const kVAxis = MouseScrollEvent.VERTICAL_AXIS;
+const kHAxis = MouseScrollEvent.HORIZONTAL_AXIS;
+
+var gLineHeight = 0;
+var gCharWidth  = 0;
+var gPageHeight = 0;
+var gPageWidth  = 0;
+
+var gP1 = document.getElementById("p1");
+var gP2 = document.getElementById("p2");
+
+var gOtherWindow;
+
+function ok(aCondition, aMessage) {
+  window.arguments[0].SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage) {
+  window.arguments[0].SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function isnot(aLeft, aRight, aMessage) {
+  window.arguments[0].SimpleTest.isnot(aLeft, aRight, aMessage);
+}
+
+function todo_is(aLeft, aRight, aMessage) {
+  window.arguments[0].SimpleTest.todo_is(aLeft, aRight, aMessage);
+}
+
+function onUnload() {
+  SpecialPowers.clearUserPref(kAltKeyActionPref);
+  SpecialPowers.clearUserPref(kCtrlKeyActionPref);
+  SpecialPowers.clearUserPref(kShiftKeyActionPref);
+  SpecialPowers.clearUserPref(kWinKeyActionPref);
+
+  SpecialPowers.clearUserPref(kAltKeyDeltaMultiplierXPref);
+  SpecialPowers.clearUserPref(kAltKeyDeltaMultiplierYPref);
+  SpecialPowers.clearUserPref(kCtrlKeyDeltaMultiplierXPref);
+  SpecialPowers.clearUserPref(kCtrlKeyDeltaMultiplierYPref);
+  SpecialPowers.clearUserPref(kShiftKeyDeltaMultiplierXPref);
+  SpecialPowers.clearUserPref(kShiftKeyDeltaMultiplierYPref);
+  SpecialPowers.clearUserPref(kWinKeyDeltaMultiplierXPref);
+  SpecialPowers.clearUserPref(kWinKeyDeltaMultiplierYPref);
+
+  SpecialPowers.clearUserPref(kSystemScrollSpeedOverridePref);
+  SpecialPowers.clearUserPref(kEmulateWheelByWMSCROLLPref);
+  SpecialPowers.clearUserPref(kVAmountPref);
+  SpecialPowers.clearUserPref(kHAmountPref);
+  SpecialPowers.clearUserPref(kTimeoutPref);
+  window.arguments[0].SimpleTest.finish();
+}
+
+function getWindowUtils(aWindow) {
+  if (!aWindow) {
+    aWindow = window;
+  }
+  return aWindow.windowUtils;
+}
+
+function getPointInScreen(aElement, aWindow) {
+  if (!aWindow) {
+    aWindow = window;
+  }
+  var bounds = aElement.getBoundingClientRect();
+  return { x: bounds.left + aWindow.mozInnerScreenX,
+           y: bounds.top + aWindow.mozInnerScreenY };
+}
+
+function cut(aNum) {
+  return (aNum >= 0) ? Math.floor(aNum) : Math.ceil(aNum);
+}
+
+/**
+ * Make each steps for the tests in following arrays in global scope. Each item
+ * of the arrays will be executed after previous test is finished.
+ *
+ * description:
+ *   Set the description of the test.  This will be used for the message of is()
+ *   or the others.
+ *
+ * message:
+ *   aNativeMessage of nsIDOMWindowUtils.sendNativeMouseScrollEvent().
+ *   Must be WM_MOUSEWHEEL, WM_MOUSEHWHEEL, WM_VSCROLL or WM_HSCROLL.
+ *
+ * delta:
+ *   The native delta value for WM_MOUSEWHEEL or WM_MOUSEHWHEEL.
+ *   Or one of the SB_* const value for WM_VSCROLL or WM_HSCROLL.
+ *
+ * target:
+ *   The target element, under the mouse cursor.
+ *
+ * window:
+ *   The window which is used for getting nsIDOMWindowUtils.
+ *
+ * modifiers:
+ *   Pressed modifier keys, 0 means no modifier key is pressed.
+ *   Otherwise, one or more values of SHIFT_L, SHIFT_R, CTRL_L, CTRL_R,
+ *   ALT_L or ALT_R.
+ *
+ * additionalFlags:
+ *   aAdditionalFlags of nsIDOMWindowUtils.sendNativeMouseScrollEvent().
+ *   See the document of nsIDOMWindowUtils for the detail of the values.
+ *
+ * onLineScrollEvent:
+ *   Must be a function or null.
+ *   If the value is a function, it will be called when DOMMouseScroll event
+ *   is received by the synthesized event.
+ *   If return true, the common checks are canceled.
+ *
+ * onPixelScrollEvent:
+ *   Must be a function or null.
+ *   If the value is a function, it will be called when MozMousePixelScroll
+ *   event is received by the synthesized event.
+ *   If return true, the common checks are canceled.
+ *
+ * expected:
+ *   Must not be null and this must have:
+ *     axis:
+ *       kVAxis if the synthesized event causes vertical scroll. Otherwise,
+ *       it causes horizontal scroll, kHAxis.
+ *     lines:
+ *       Integer value which is expected detail attribute value of
+ *       DOMMouseScroll.  If the event shouldn't be fired, must be 0.
+ *     pixels:
+ *       Integer value or a function which returns double value.  The value is
+ *       expected detail attribute value of MozMousePixelScroll.
+ *       If the event shouldn't be fired, must be 0.
+ *
+ *   Note that if both lines and pixels are 0, the test framework waits
+ *   a few seconds. After that, go to next test.
+ *
+ * init:
+ *   Must be a function or null.  If this value is a function, it's called
+ *   before synthesizing the native event.
+ *
+ * finish:
+ *   Must be a function or null.  If this value is a function, it's called
+ *   after received all expected events or timeout if no events are expected.
+ */
+
+// First, get the computed line height, char width, page height and page width.
+var gPreparingSteps = [
+  { description: "Preparing gLineHeight",
+    message: WM_MOUSEWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    onLineScrollEvent(aEvent) {
+      return true;
+    },
+    onPixelScrollEvent(aEvent) {
+      gLineHeight = aEvent.detail;
+      return true;
+    },
+    expected: {
+      axis: kVAxis, lines: 1, pixels: 1,
+    },
+    init() {
+      SpecialPowers.setIntPref(kVAmountPref, 1);
+      SpecialPowers.setIntPref(kHAmountPref, 1);
+    },
+  },
+  { description: "Preparing gCharWidth",
+    message: WM_MOUSEHWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    onLineScrollEvent(aEvent) {
+      return true;
+    },
+    onPixelScrollEvent(aEvent) {
+      gCharWidth = aEvent.detail;
+      return true;
+    },
+    expected: {
+      axis: kVAxis, lines: 1, pixels: 1,
+    },
+  },
+  { description: "Preparing gPageHeight",
+    message: WM_MOUSEWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    onLineScrollEvent(aEvent) {
+      return true;
+    },
+    onPixelScrollEvent(aEvent) {
+      gPageHeight = aEvent.detail;
+      return true;
+    },
+    expected: {
+      axis: kHAxis, lines: 1, pixels: 1,
+    },
+    init() {
+      SpecialPowers.setIntPref(kVAmountPref, 0xFFFF);
+      SpecialPowers.setIntPref(kHAmountPref, 0xFFFF);
+    },
+  },
+  { description: "Preparing gPageWidth",
+    message: WM_MOUSEHWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    onLineScrollEvent(aEvent) {
+      return true;
+    },
+    onPixelScrollEvent(aEvent) {
+      gPageWidth = aEvent.detail;
+      return true;
+    },
+    expected: {
+      axis: kHAxis, lines: 1, pixels: 1,
+    },
+    finish() {
+      ok(gLineHeight > 0, "gLineHeight isn't positive got " + gLineHeight);
+      ok(gCharWidth > 0, "gCharWidth isn't positive got " + gCharWidth);
+      ok(gPageHeight > 0, "gPageHeight isn't positive got " + gPageHeight);
+      ok(gPageWidth > 0, "gPageWidth isn't positive got " + gPageWidth);
+
+      ok(gPageHeight > gLineHeight,
+         "gPageHeight must be larger than gLineHeight");
+      ok(gPageWidth > gCharWidth,
+         "gPageWidth must be larger than gCharWidth");
+      runNextTest(gBasicTests, 0);
+    },
+  },
+];
+
+var gBasicTests = [
+  // Widget shouldn't dispatch a pixel event if the delta can be devided by
+  // lines to be scrolled.  However, pixel events should be fired by ESM.
+  { description: "WM_MOUSEWHEEL, -120, 3 lines",
+    message: WM_MOUSEWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 3, pixels() { return gLineHeight * 3; },
+    },
+    init() {
+      SpecialPowers.setIntPref(kVAmountPref, 3);
+      SpecialPowers.setIntPref(kHAmountPref, 3);
+    },
+  },
+
+  { description: "WM_MOUSEWHEEL, 120, -3 lines",
+    message: WM_MOUSEWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -3, pixels() { return gLineHeight * -3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 120, 3 chars",
+    message: WM_MOUSEHWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 3, pixels() { return gCharWidth * 3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, -120, -3 chars",
+    message: WM_MOUSEHWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -3, pixels() { return gCharWidth * -3; },
+    },
+  },
+
+  // Pixel scroll event should be fired always but line scroll event should be
+  // fired only when accumulated delta value is over a line.
+  { description: "WM_MOUSEWHEEL, -20, 0.5 lines",
+    message: WM_MOUSEWHEEL, delta: -20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gLineHeight / 2; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -20, 0.5 lines (pending: 0.5 lines)",
+    message: WM_MOUSEWHEEL, delta: -20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight / 2; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -20, 0.5 lines",
+    message: WM_MOUSEWHEEL, delta: -20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gLineHeight / 2; },
+    },
+  },
+
+  { description: "WM_MOUSEWHEEL, 20, -0.5 lines (pending: 0.5 lines)",
+    message: WM_MOUSEWHEEL, delta: 20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gLineHeight / -2; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, 20, -0.5 lines (pending: -0.5 lines)",
+    message: WM_MOUSEWHEEL, delta: 20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight / 2; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, 20, -0.5 lines",
+    message: WM_MOUSEWHEEL, delta: 20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gLineHeight / -2; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 20, 0.5 chars",
+    message: WM_MOUSEHWHEEL, delta: 20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gCharWidth / 2; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 20, 0.5 chars (pending: 0.5 chars)",
+    message: WM_MOUSEHWHEEL, delta: 20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth / 2; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 20, 0.5 chars",
+    message: WM_MOUSEHWHEEL, delta: 20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gCharWidth / 2; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, -20, -0.5 chars (pending: 0.5 chars)",
+    message: WM_MOUSEHWHEEL, delta: -20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gCharWidth / -2; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, -20, -0.5 chars (pending: -0.5 chars)",
+    message: WM_MOUSEHWHEEL, delta: -20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth / 2; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, -20, -0.5 chars",
+    message: WM_MOUSEHWHEEL, delta: -20,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gCharWidth / -2; },
+    },
+  },
+
+  // Even if the mouse cursor is an element whose font-size is different than
+  // the scrollable element, the pixel scroll amount shouldn't be changed.
+  // Widget shouldn't dispatch a pixel event if the delta can be devided by
+  // lines to be scrolled.  However, pixel events should be fired by ESM.
+  { description: "WM_MOUSEWHEEL, -120, 3 lines, on the other div whose font-size is larger",
+    message: WM_MOUSEWHEEL, delta: -120,
+    target: gP2, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 3, pixels() { return gLineHeight * 3; },
+    },
+  },
+
+  { description: "WM_MOUSEWHEEL, 120, -3 lines, on the other div whose font-size is larger",
+    message: WM_MOUSEWHEEL, delta: 120,
+    target: gP2, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -3, pixels() { return gLineHeight * -3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 120, 3 chars, on the other div whose font-size is larger",
+    message: WM_MOUSEHWHEEL, delta: 120,
+    target: gP2, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 3, pixels() { return gCharWidth * 3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, -120, -3 chars, on the other div whose font-size is larger",
+    message: WM_MOUSEHWHEEL, delta: -120,
+    target: gP2, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -3, pixels() { return gCharWidth * -3; },
+    },
+  },
+
+  // Modifier key tests
+  { description: "WM_MOUSEWHEEL, -40, 1 line with left Shift",
+    message: WM_MOUSEWHEEL, delta: -40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_L,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -40, 1 line with right Shift",
+    message: WM_MOUSEWHEEL, delta: -40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_R,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -40, 1 line with left Ctrl",
+    message: WM_MOUSEWHEEL, delta: -40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_L,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -40, 1 line with right Ctrl",
+    message: WM_MOUSEWHEEL, delta: -40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_R,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -40, 1 line with left Alt",
+    message: WM_MOUSEWHEEL, delta: -40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_L,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -40, 1 line with right Alt",
+    message: WM_MOUSEWHEEL, delta: -40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_R,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 40, 1 character with left Shift",
+    message: WM_MOUSEHWHEEL, delta: 40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_L,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 40, 1 character with right Shift",
+    message: WM_MOUSEHWHEEL, delta: 40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_R,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 40, 1 character with left Ctrl",
+    message: WM_MOUSEHWHEEL, delta: 40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_L,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 40, 1 character with right Ctrl",
+    message: WM_MOUSEHWHEEL, delta: 40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_R,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 40, 1 character with left Alt",
+    message: WM_MOUSEHWHEEL, delta: 40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_L,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 40, 1 character with right Alt",
+    message: WM_MOUSEHWHEEL, delta: 40,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_R,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+
+    finish() {
+      runNextTest(gScrollMessageTests, 0);
+    },
+  },
+];
+
+var gPageScrllTests = [
+  // Pixel scroll event should be fired always but line scroll event should be
+  // fired only when accumulated delta value is over a line.
+  { description: "WM_MOUSEWHEEL, -60, 0.5 pages",
+    message: WM_MOUSEWHEEL, delta: -60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gPageHeight / 2; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -60, 0.5 pages (pending: 0.5 pages)",
+    message: WM_MOUSEWHEEL, delta: -60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: DOM_PAGE_SCROLL_DELTA,
+      pixels() { return ((gPageHeight / 2) + (gPageHeight % 2)); },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, -60, 0.5 pages",
+    message: WM_MOUSEWHEEL, delta: -60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gPageHeight / 2; },
+    },
+  },
+
+  { description: "WM_MOUSEWHEEL, 60, -0.5 pages (pending: 0.5 pages)",
+    message: WM_MOUSEWHEEL, delta: 60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gPageHeight / -2; },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, 60, -0.5 pages (pending: -0.5 pages)",
+    message: WM_MOUSEWHEEL, delta: 60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -DOM_PAGE_SCROLL_DELTA,
+      pixels() { return -((gPageHeight / 2) + (gPageHeight % 2)); },
+    },
+  },
+  { description: "WM_MOUSEWHEEL, 60, -0.5 pages",
+    message: WM_MOUSEWHEEL, delta: 60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels() { return gPageHeight / -2; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 60, 0.5 pages",
+    message: WM_MOUSEHWHEEL, delta: 60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gPageWidth / 2; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 60, 0.5 pages (pending: 0.5 pages)",
+    message: WM_MOUSEHWHEEL, delta: 60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: DOM_PAGE_SCROLL_DELTA,
+      pixels() { return ((gPageWidth / 2) + (gPageWidth % 2)); },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, 60, 0.5 pages",
+    message: WM_MOUSEHWHEEL, delta: 60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gPageWidth / 2; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, -60, -0.5 pages (pending: 0.5 pages)",
+    message: WM_MOUSEHWHEEL, delta: -60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gCharWidth / -2; },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, -60, -0.5 pages (pending: -0.5 pages)",
+    message: WM_MOUSEHWHEEL, delta: -60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -DOM_PAGE_SCROLL_DELTA,
+      pixels() { return -((gCharWidth / 2) + (gCharWidth % 2)); },
+    },
+  },
+  { description: "WM_MOUSEHWHEEL, -60, -0.5 pages",
+    message: WM_MOUSEHWHEEL, delta: -60,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels() { return gCharWidth / -2; },
+    },
+  },
+];
+
+var gScrollMessageTests = [
+  // Widget should dispatch neither line scroll event nor pixel scroll event if
+  // the WM_*SCROLL's lParam is NULL and mouse wheel emulation is disabled.
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is NULL, emulation disabled",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels: 0,
+    },
+    init() {
+      SpecialPowers.setIntPref(kVAmountPref, 3);
+      SpecialPowers.setIntPref(kHAmountPref, 3);
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, false);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is NULL, emulation disabled",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 0, pixels: 0,
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is NULL, emulation disabled",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels: 0,
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is NULL, emulation disabled",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 0, pixels: 0,
+    },
+  },
+
+  // Widget should emulate mouse wheel behavior for WM_*SCROLL even if the
+  // kEmulateWheelByWMSCROLLPref is disabled but the message's lParam is not
+  // NULL. Then, widget doesn't dispatch a pixel event for WM_*SCROLL messages,
+  // but ESM dispatches it instead.
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is not NULL, emulation disabled",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, false);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is not NULL, emulation disabled",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_PAGEUP, lParam is not NULL, emulation disabled",
+    message: WM_VSCROLL, delta: SB_PAGEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: -DOM_PAGE_SCROLL_DELTA,
+      pixels() { return -gPageHeight; },
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_PAGEDOWN, lParam is not NULL, emulation disabled",
+    message: WM_VSCROLL, delta: SB_PAGEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: DOM_PAGE_SCROLL_DELTA,
+      pixels() { return gPageHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_PAGELEFT, lParam is not NULL, emulation disabled",
+    message: WM_HSCROLL, delta: SB_PAGELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: -DOM_PAGE_SCROLL_DELTA,
+      pixels() { return -gPageWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_PAGERIGHT, lParam is not NULL, emulation disabled",
+    message: WM_HSCROLL, delta: SB_PAGERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: DOM_PAGE_SCROLL_DELTA,
+      pixels() { return gPageWidth; },
+    },
+  },
+
+  // Widget should emulate mouse wheel behavior for WM_*SCROLL when the
+  // kEmulateWheelByWMSCROLLPref is enabled even if the message's lParam is
+  // NULL. Then, widget doesn't dispatch a pixel event for WM_*SCROLL messages,
+  // but ESM dispatches it instead.
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is NULL, emulation enabled",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, true);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is NULL, emulation enabled",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is NULL, emulation enabled",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is NULL, emulation enabled",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_PAGEUP, lParam is NULL, emulation enabled",
+    message: WM_VSCROLL, delta: SB_PAGEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -DOM_PAGE_SCROLL_DELTA,
+      pixels() { return -gPageHeight; },
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_PAGEDOWN, lParam is NULL, emulation enabled",
+    message: WM_VSCROLL, delta: SB_PAGEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: DOM_PAGE_SCROLL_DELTA,
+      pixels() { return gPageHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_PAGELEFT, lParam is NULL, emulation enabled",
+    message: WM_HSCROLL, delta: SB_PAGELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -DOM_PAGE_SCROLL_DELTA,
+      pixels() { return -gPageWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_PAGERIGHT, lParam is NULL, emulation enabled",
+    message: WM_HSCROLL, delta: SB_PAGERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: DOM_PAGE_SCROLL_DELTA,
+      pixels() { return gPageWidth; },
+    },
+  },
+
+  // Modifier key tests for WM_*SCROLL
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, with left Shift",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, false);
+    },
+  },
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, with right Shift",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_R,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, with left Ctrl",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, with right Ctrl",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, with left Alt",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, with right Alt",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_R,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, with left Shift",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, with right Shift",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: SHIFT_R,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, with left Ctrl",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, with right Ctrl",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: CTRL_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, with left Alt",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_L,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, with right Alt",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: ALT_R,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+
+    finish() {
+      runDeactiveWindowTests();
+    },
+  },
+];
+
+var gDeactiveWindowTests = [
+  // Typically, mouse drivers send wheel messages to focused window.
+  // However, we prefer to scroll a scrollable element under the mouse cursor.
+  { description: "WM_MOUSEWHEEL, -120, 3 lines, window is deactive",
+    message: WM_MOUSEWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 3, pixels() { return gLineHeight * 3; },
+    },
+    init() {
+      SpecialPowers.setIntPref(kVAmountPref, 3);
+      SpecialPowers.setIntPref(kHAmountPref, 3);
+    },
+    onLineScrollEvent(aEvent) {
+      var fm = Services.focus;
+      is(fm.activeWindow, gOtherWindow, "The other window isn't activated");
+    },
+  },
+
+  { description: "WM_MOUSEWHEEL, 120, -3 lines, window is deactive",
+    message: WM_MOUSEWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -3, pixels() { return gLineHeight * -3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 120, 3 chars, window is deactive",
+    message: WM_MOUSEHWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 3, pixels() { return gCharWidth * 3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, -120, -3 chars, window is deactive",
+    message: WM_MOUSEHWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -3, pixels() { return gCharWidth * -3; },
+    },
+  },
+
+  // Of course, even if some drivers prefer the cursor position, we don't need
+  // to change anything.
+  { description: "WM_MOUSEWHEEL, -120, 3 lines, window is deactive (receive the message directly)",
+    message: WM_MOUSEWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kVAxis, lines: 3, pixels() { return gLineHeight * 3; },
+    },
+  },
+
+  { description: "WM_MOUSEWHEEL, 120, -3 lines, window is deactive (receive the message directly)",
+    message: WM_MOUSEWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kVAxis, lines: -3, pixels() { return gLineHeight * -3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, 120, 3 chars, window is deactive (receive the message directly)",
+    message: WM_MOUSEHWHEEL, delta: 120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kHAxis, lines: 3, pixels() { return gCharWidth * 3; },
+    },
+  },
+
+  { description: "WM_MOUSEHWHEEL, -120, -3 chars, window is deactive (receive the message directly)",
+    message: WM_MOUSEHWHEEL, delta: -120,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kHAxis, lines: -3, pixels() { return gCharWidth * -3; },
+    },
+  },
+
+  // Same for WM_*SCROLL if lParam is not NULL
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is not NULL, emulation disabled, window is deactive",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, false);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, window is deactive",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is not NULL, emulation disabled, window is deactive",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, window is deactive",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+
+  // Same for WM_*SCROLL if lParam is NULL but emulation is enabled
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is NULL, emulation enabled, window is deactive",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, true);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is NULL, emulation enabled, window is deactive",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is NULL, emulation enabled, window is deactive",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is NULL, emulation enabled, window is deactive",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: 0,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+
+  // Same for WM_*SCROLL if lParam is not NULL and message sent to the deactive window directly
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is not NULL, emulation disabled, window is deactive (receive the message directly)",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL |
+                     nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, false);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is not NULL, emulation disabled, window is deactive (receive the message directly)",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL |
+                     nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is not NULL, emulation disabled, window is deactive (receive the message directly)",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL |
+                     nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is not NULL, emulation disabled, window is deactive (receive the message directly)",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_WIN_SCROLL_LPARAM_NOT_NULL |
+                     nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+  },
+
+  // Same for WM_*SCROLL if lParam is NULL but emulation is enabled, and message sent to the deactive window directly
+  { description: "WM_VSCROLL, SB_LINEUP, lParam is NULL, emulation enabled, window is deactive (receive the message directly)",
+    message: WM_VSCROLL, delta: SB_LINEUP,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kVAxis, lines: -1, pixels() { return -gLineHeight; },
+    },
+    init() {
+      SpecialPowers.setBoolPref(kEmulateWheelByWMSCROLLPref, true);
+    },
+  },
+
+  { description: "WM_VSCROLL, SB_LINEDOWN, lParam is NULL, emulation enabled, window is deactive (receive the message directly)",
+    message: WM_VSCROLL, delta: SB_LINEDOWN,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kVAxis, lines: 1, pixels() { return gLineHeight; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINELEFT, lParam is NULL, emulation enabled, window is deactive (receive the message directly)",
+    message: WM_HSCROLL, delta: SB_LINELEFT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kHAxis, lines: -1, pixels() { return -gCharWidth; },
+    },
+  },
+
+  { description: "WM_HSCROLL, SB_LINERIGHT, lParam is NULL, emulation enabled, window is deactive (receive the message directly)",
+    message: WM_HSCROLL, delta: SB_LINERIGHT,
+    target: gP1, x: 10, y: 10, window,
+    modifiers: 0,
+    additionalFlags: nsIDOMWindowUtils.MOUSESCROLL_PREFER_WIDGET_AT_POINT,
+    expected: {
+      axis: kHAxis, lines: 1, pixels() { return gCharWidth; },
+    },
+
+    finish() {
+      gOtherWindow.close();
+      gOtherWindow = null;
+      window.close();
+    },
+  },
+];
+
+function runDeactiveWindowTests() {
+  gOtherWindow = window.open("window_mouse_scroll_win_2.html", "_blank",
+                             "chrome,width=100,height=100,top=700,left=700");
+
+  window.arguments[0].SimpleTest.waitForFocus(function() {
+    runNextTest(gDeactiveWindowTests, 0);
+  }, gOtherWindow);
+}
+
+function runNextTest(aTests, aIndex) {
+  if (aIndex > 0 && aTests[aIndex - 1] && aTests[aIndex - 1].finish) {
+    aTests[aIndex - 1].finish();
+  }
+
+  if (aTests.length == aIndex) {
+    return;
+  }
+
+  var test = aTests[aIndex++];
+  if (test.init) {
+    test.init();
+  }
+  test.handled = { lines: false, pixels: false };
+
+  switch (test.message) {
+    case WM_MOUSEWHEEL:
+    case WM_MOUSEHWHEEL:
+    case WM_VSCROLL:
+    case WM_HSCROLL:
+      var expectedLines = test.expected.lines;
+      var expectedPixels =
+        cut((typeof test.expected.pixels == "function") ?
+               test.expected.pixels() : test.expected.pixels);
+      var handler = function(aEvent) {
+        var doCommonTests = true;
+
+        if (!aEvent) {
+          ok(!test.handled.lines,
+             test.description + ", line scroll event has been handled");
+          ok(!test.handled.pixels,
+             test.description + ", pixel scroll event has been handled");
+          doCommonTests = false;
+        } else if (aEvent.type == kMouseLineScrollEvent) {
+          ok(!test.handled.lines,
+             test.description + ":(" + aEvent.type + "), same event has already been handled");
+          test.handled.lines = true;
+          isnot(expectedLines, 0,
+                test.description + ":(" + aEvent.type + "), event shouldn't be fired");
+          if (test.onLineScrollEvent && test.onLineScrollEvent(aEvent)) {
+            doCommonTests = false;
+          }
+        } else if (aEvent.type == kMousePixelScrollEvent) {
+          ok(!test.handled.pixels,
+             test.description + ":(" + aEvent.type + "), same event has already been handled");
+          test.handled.pixels = true;
+          isnot(expectedPixels, 0,
+                test.description + ":(" + aEvent.type + "), event shouldn't be fired");
+          if (test.onPixelScrollEvent && test.onPixelScrollEvent(aEvent)) {
+            doCommonTests = false;
+          }
+        }
+
+        if (doCommonTests) {
+          var expectedDelta =
+            (aEvent.type == kMouseLineScrollEvent) ?
+              expectedLines : expectedPixels;
+          is(aEvent.target.id, test.target.id,
+             test.description + ":(" + aEvent.type + "), ID mismatch");
+          is(aEvent.axis, test.expected.axis,
+             test.description + ":(" + aEvent.type + "), axis mismatch");
+          ok(aEvent.detail != 0,
+             test.description + ":(" + aEvent.type + "), delta must not be 0");
+          is(aEvent.detail, expectedDelta,
+             test.description + ":(" + aEvent.type + "), delta mismatch");
+          is(aEvent.shiftKey, (test.modifiers & (SHIFT_L | SHIFT_R)) != 0,
+             test.description + ":(" + aEvent.type + "), shiftKey mismatch");
+          is(aEvent.ctrlKey, (test.modifiers & (CTRL_L | CTRL_R)) != 0,
+             test.description + ":(" + aEvent.type + "), ctrlKey mismatch");
+          is(aEvent.altKey, (test.modifiers & (ALT_L | ALT_R)) != 0,
+             test.description + ":(" + aEvent.type + "), altKey mismatch");
+        }
+
+        if (!aEvent || (test.handled.lines || expectedLines == 0) &&
+                       (test.handled.pixels || expectedPixels == 0)) {
+          // Don't scroll actually.
+          if (aEvent) {
+            aEvent.preventDefault();
+          }
+          test.target.removeEventListener(kMouseLineScrollEvent, handler, true);
+          test.target.removeEventListener(kMousePixelScrollEvent, handler, true);
+          setTimeout(runNextTest, 0, aTests, aIndex);
+        }
+      };
+
+      test.target.addEventListener(kMouseLineScrollEvent, handler, true);
+      test.target.addEventListener(kMousePixelScrollEvent, handler, true);
+
+      if (expectedLines == 0 && expectedPixels == 0) {
+        // The timeout might not be enough if system is slow by other process,
+        // so, the test might be passed unexpectedly.  However, it must be able
+        // to be detected by random orange.
+        setTimeout(handler, 500);
+      }
+
+      var utils = getWindowUtils(test.window);
+      var ptInScreen = getPointInScreen(test.target, test.window);
+      var isVertical =
+        ((test.message == WM_MOUSEWHEEL) || (test.message == WM_VSCROLL));
+      var deltaX = !isVertical ? test.delta : 0;
+      var deltaY = isVertical ? test.delta : 0;
+      utils.sendNativeMouseScrollEvent(ptInScreen.x + test.x,
+                                       ptInScreen.y + test.y,
+                                       test.message, deltaX, deltaY, 0,
+                                       test.modifiers,
+                                       test.additionalFlags,
+                                       test.target);
+      break;
+    default:
+      ok(false, test.description + ": invalid message");
+      // Let's timeout.
+  }
+}
+
+function prepareTests() {
+  // Disable special action with modifier key
+  SpecialPowers.setIntPref(kAltKeyActionPref, 1);
+  SpecialPowers.setIntPref(kCtrlKeyActionPref, 1);
+  SpecialPowers.setIntPref(kShiftKeyActionPref, 1);
+  SpecialPowers.setIntPref(kWinKeyActionPref, 1);
+
+  SpecialPowers.setIntPref(kAltKeyDeltaMultiplierXPref, 100);
+  SpecialPowers.setIntPref(kAltKeyDeltaMultiplierYPref, 100);
+  SpecialPowers.setIntPref(kCtrlKeyDeltaMultiplierXPref, 100);
+  SpecialPowers.setIntPref(kCtrlKeyDeltaMultiplierYPref, 100);
+  SpecialPowers.setIntPref(kShiftKeyDeltaMultiplierXPref, 100);
+  SpecialPowers.setIntPref(kShiftKeyDeltaMultiplierYPref, 100);
+  SpecialPowers.setIntPref(kWinKeyDeltaMultiplierXPref, 100);
+  SpecialPowers.setIntPref(kWinKeyDeltaMultiplierYPref, 100);
+
+  SpecialPowers.setBoolPref(kSystemScrollSpeedOverridePref, false);
+  SpecialPowers.setIntPref(kTimeoutPref, -1);
+
+  runNextTest(gPreparingSteps, 0);
+}
+
+</script>
+</body>
+
+</html>
diff --git a/widget/tests/window_mouse_scroll_win_2.html b/widget/tests/window_mouse_scroll_win_2.html
new file mode 100644
index 0000000000..c8d3762405
--- /dev/null
+++ b/widget/tests/window_mouse_scroll_win_2.html
@@ -0,0 +1,6 @@
+<!DOCTYPE HTML>
+<html>
+<body>
+  Helper file for window_mouse_scroll_win.html
+</body>
+</html>
diff --git a/widget/tests/window_picker_no_crash_child.html b/widget/tests/window_picker_no_crash_child.html
new file mode 100644
index 0000000000..c980f979be
--- /dev/null
+++ b/widget/tests/window_picker_no_crash_child.html
@@ -0,0 +1,6 @@
+<!doctype html>
+<title>Picker window</title>
+<form name="form1">
+  <input type="file" name="uploadbox" id="uploadbox" onclick="window.clicked = true;">
+  <input type="file" name="multiple" id="multiple" multiple onclick="window.clicked = true">
+</form>
diff --git a/widget/tests/window_state_windows.xhtml b/widget/tests/window_state_windows.xhtml
new file mode 100644
index 0000000000..60989db144
--- /dev/null
+++ b/widget/tests/window_state_windows.xhtml
@@ -0,0 +1,80 @@
+<?xml version="1.0"?>
+
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window id="NativeWindow"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        width="300"
+        height="300"
+        onload="onLoad();"
+        title="Window State Tests">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script type="application/javascript">
+    <![CDATA[
+
+    SimpleTest.waitForExplicitFinish();
+
+    function onLoad() {
+      var win = Services.wm.getMostRecentWindow("navigator:browser");
+
+      /*
+      switch(win.windowState) {
+        case win.STATE_FULLSCREEN:
+        dump("STATE_FULLSCREEN \n");
+        break;
+        case win.STATE_MAXIMIZED:
+        dump("STATE_MAXIMIZED \n");
+        break;
+        case win.STATE_MINIMIZED:
+        dump("STATE_MINIMIZED \n");
+        break;
+        case win.STATE_NORMAL:
+        dump("STATE_NORMAL \n");
+        break;
+      }
+      */
+
+      // Make sure size mode changes are reflected in the widget.
+      win.restore();
+      ok(win.windowState == win.STATE_NORMAL, "window state is restored.");
+      win.minimize();
+      ok(win.windowState == win.STATE_MINIMIZED, "window state is minimized.");
+      
+      // Windows resizes children to 0x0. Code in nsWindow filters these changes out. Without
+      // this all sorts of screwy things can happen in child widgets.
+      ok(document.documentElement.clientHeight > 0, "document height should not be zero for a minimized window!");
+      ok(document.documentElement.clientWidth > 0, "document width should not be zero for a minimized window!");
+      
+      // Make sure size mode changes are reflected in the widget.
+      win.restore();
+      ok(win.windowState == win.STATE_NORMAL, "window state is restored.");
+      win.maximize();
+      ok(win.windowState == win.STATE_MAXIMIZED, "window state is maximized.");
+      win.restore();
+      ok(win.windowState == win.STATE_NORMAL, "window state is restored.");
+
+      /*
+      dump(win.screenX + "\n");
+      win.minimize();
+      dump(win.screenX + "\n");
+      win.restore();
+      dump(win.screenX + "\n");
+      */
+      
+      SimpleTest.finish();
+    }
+
+  ]]>
+  </script>
+  <body xmlns="http://www.w3.org/1999/xhtml">
+    <p id="display"></p>
+    <div id="content" style="display: none"></div>
+    <pre id="test"></pre>
+  </body>
+</window>
diff --git a/widget/tests/window_wheeltransaction.xhtml b/widget/tests/window_wheeltransaction.xhtml
new file mode 100644
index 0000000000..f3c081b105
--- /dev/null
+++ b/widget/tests/window_wheeltransaction.xhtml
@@ -0,0 +1,1569 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<window title="Wheel scroll tests"
+  width="600" height="600"
+  onload="onload();"
+  onunload="onunload();"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js" />
+  <script src="chrome://mochikit/content/tests/SimpleTest/paint_listener.js" />
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<style type="text/css">
+  #rootview {
+    overflow: auto;
+    width: 400px;
+    height: 400px;
+    border: 1px solid;
+  }
+  #container {
+    overflow: auto;
+    width: 600px;
+    height: 600px;
+  }
+  #rootview pre {
+    margin: 20px 0 20px 20px;
+    padding: 0;
+    overflow: auto;
+    display: block;
+    width: 100px;
+    height: 100.5px;
+    font-size: 16px;
+  }
+</style>
+<div id="rootview" onscroll="onScrollView(event);">
+  <div id="container">
+    <pre id="subview1" onscroll="onScrollView(event);">
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+    </pre>
+    <pre id="subview2" onscroll="onScrollView(event);">
+Text.
+Text.
+Text.
+Text.
+Text.
+Text.
+Text.
+Text.
+Text.
+Text.
+    </pre>
+    <pre id="subview3" onscroll="onScrollView(event);">
+Text. Text. Text. Text. Text. Text. Text. Text. Text. Text. Text.
+    </pre>
+  </div>
+</div>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+function ok(aCondition, aMessage)
+{
+  window.arguments[0].SimpleTest.ok(aCondition, aMessage);
+}
+
+function is(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.is(aLeft, aRight, aMessage);
+}
+
+function isnot(aLeft, aRight, aMessage)
+{
+  window.arguments[0].SimpleTest.isnot(aLeft, aRight, aMessage);
+}
+
+var gCurrentTestListStatus = { nextListIndex: 0 };
+var gCurrentTest;
+
+const kListenEvent_None                 = 0;
+const kListenEvent_OnScroll             = 1;
+const kListenEvent_OnScrollFailed       = 2;
+const kListenEvent_OnTransactionTimeout = 4;
+const kListenEvent_All = kListenEvent_OnScroll |
+                         kListenEvent_OnScrollFailed |
+                         kListenEvent_OnTransactionTimeout;
+var gLitesnEvents = kListenEvent_None;
+
+/**
+ * At unexpected transaction timeout, we need to stop *all* timers.  But it is
+ * difficult and it can be create more complex testing code.  So, we should use
+ * only one timer at one time.  For that, we must store the timer id to this
+ * variable.  And the functions which may be called via a timer must clear the
+ * current timer by |_clearTimer| function.
+ */
+var gTimer;
+
+var gPrefSvc = SpecialPowers.Services.prefs;
+const kPrefSmoothScroll = "general.smoothScroll";
+const kPrefNameTimeout = "mousewheel.transaction.timeout";
+const kPrefNameIgnoreMoveDelay = "mousewheel.transaction.ignoremovedelay";
+const kPrefTestEventsAsyncEnabled = "test.events.async.enabled";
+
+const kDefaultTimeout = gPrefSvc.getIntPref(kPrefNameTimeout);
+const kDefaultIgnoreMoveDelay = gPrefSvc.getIntPref(kPrefNameIgnoreMoveDelay);
+
+gPrefSvc.setBoolPref(kPrefSmoothScroll, false);
+gPrefSvc.setBoolPref(kPrefTestEventsAsyncEnabled, true);
+
+var gTimeout, gIgnoreMoveDelay;
+var gEnoughForTimeout, gEnoughForIgnoreMoveDelay;
+
+function setTimeoutPrefs(aTimeout, aIgnoreMoveDelay)
+{
+  gPrefSvc.setIntPref(kPrefNameTimeout, aTimeout);
+  gPrefSvc.setIntPref(kPrefNameIgnoreMoveDelay, aIgnoreMoveDelay);
+  gTimeout = aTimeout;
+  gIgnoreMoveDelay = aIgnoreMoveDelay;
+  gEnoughForTimeout = gTimeout * 2;
+  gEnoughForIgnoreMoveDelay = gIgnoreMoveDelay * 1.2;
+}
+
+function resetTimeoutPrefs()
+{
+  if (gTimeout == kDefaultTimeout)
+    return;
+  setTimeoutPrefs(kDefaultTimeout, kDefaultIgnoreMoveDelay);
+  initTestList();
+}
+
+function growUpTimeoutPrefs()
+{
+  if (gTimeout != kDefaultTimeout)
+    return;
+  setTimeoutPrefs(5000, 1000);
+  initTestList();
+}
+
+// setting enough time for testing.
+gPrefSvc.setIntPref(kPrefNameTimeout, gTimeout);
+gPrefSvc.setIntPref(kPrefNameIgnoreMoveDelay, gIgnoreMoveDelay);
+
+var gRootView = document.getElementById("rootview");
+var gSubView1 = document.getElementById("subview1");
+var gSubView2 = document.getElementById("subview2");
+var gSubView3 = document.getElementById("subview3");
+
+gRootView.addEventListener("MozMouseScrollFailed", onMouseScrollFailed);
+gRootView.addEventListener("MozMouseScrollTransactionTimeout",
+                           onTransactionTimeout);
+
+function finish()
+{
+  window.close();
+}
+
+async function onload()
+{
+  // Before actually running tests, we disable auto-dir scrolling, becasue the
+  // tests in this file are meant to test scrolling transactions, not meant to
+  // test default actions for wheel events, so we simply disabled auto-dir
+  // scrolling, which are well tested in
+  // dom/events/test/window_wheel_default_action.html.
+  await SpecialPowers.pushPrefEnv({"set": [["mousewheel.autodir.enabled",
+                                            false]]});
+
+  runNextTestList();
+}
+
+function onunload()
+{
+  resetTimeoutPrefs();
+  gPrefSvc.clearUserPref(kPrefSmoothScroll);
+  gPrefSvc.clearUserPref(kPrefTestEventsAsyncEnabled);
+  disableNonTestMouseEvents(false);
+  SpecialPowers.DOMWindowUtils.restoreNormalRefresh();
+  window.arguments[0].SimpleTest.finish();
+}
+
+function offsetForRootView()
+{
+  let rootViewRect = gRootView.getBoundingClientRect();
+  let subView1Rect = gSubView1.getBoundingClientRect();
+  return {
+    x: (subView1Rect.left - rootViewRect.left) / 2,
+    y: (subView1Rect.top - rootViewRect.top) / 2,
+  }
+}
+
+function _offsetFor(aSubView)
+{
+  let rootViewRect = gRootView.getBoundingClientRect();
+  let subViewRect = aSubView.getBoundingClientRect();
+  return {
+    x: subViewRect.left - rootViewRect.left + subViewRect.width / 2,
+    y: subViewRect.top - rootViewRect.top + subViewRect.height / 2,
+  }
+}
+
+function offsetForSubView1()
+{
+  return _offsetFor(gSubView1);
+}
+
+function offsetForSubView2()
+{
+  return _offsetFor(gSubView2);
+}
+
+function offsetForSubView3()
+{
+  return _offsetFor(gSubView3);
+}
+
+/**
+ * Define the tests here:
+ *   Scrolls are processed async always.  Therefore, we need to call all tests
+ *   by timer.  gTestLists is array of testing lists. In other words, an item
+ *   of gTestList is a group of one or more testing. Each items has following
+ *   properties:
+ *
+ *     - retryWhenTransactionTimeout
+ *         The testing of wheel transaction might be fialed randomly by
+ *         timeout.  Then, automatically the failed test list will be retested
+ *         automatically only this number of times.
+ *
+ *     - steps
+ *         This property is array of testing.  Each steps must have following
+ *         properties at least.
+ *
+ *         - func
+ *             This property means function which will be called via
+ *             |setTimeout|.  The function cannot have params.  If you need
+ *             some additional parameters, you can specify some original
+ *             properties for the test function.  If you do so, you should
+ *             document it in the testing function.
+ *         - delay
+ *             This property means delay time until the function to be called.
+ *             I.e., the value used for the second param of |setTimeout|.
+ *
+ *         And also you need one more property when you call a testing function.
+ *
+ *         - description
+ *             This property is description of the test.  This is used for
+ *             logging.
+ *
+ *         At testing, you can access to current step via |gCurrentTest|.
+ */
+
+var gTestLists;
+function initTestList()
+{
+  gTestLists = [
+    /**************************************************************************
+     * Continuous scrolling test for |gRootView|
+     *   |gRootView| has both scrollbars and it has three children which are
+     *   |gSubView1|, |gSubView2| and |gSubView3|.  They have scrollbars.  If
+     *   the current transaction targets |gRootView|, other children should not
+     *   be scrolled even if the wheel events are fired on them.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Vertical wheel events should scroll |gRootView| even if the position
+        // of wheel events in a child view which has scrollbar.
+        { func: testContinuousScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Continuous scrolling test for root view (vertical/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Continuous scrolling test for root view (vertical/backward)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Horizontal wheel events should scroll |gRootView| even if the
+        // position of wheel events in a child view which has scrollbar.
+        { func: testContinuousScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Continuous scrolling test for root view (horizontal/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          description: "Continuous scrolling test for root view (horizontal/backward)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Continuous scrolling test for |gSubView1|
+     *   |gSubView1| has both scrollbars.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Vertical wheel events should scroll |gSubView1|.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          description: "Continuous scrolling test for sub view 1 (vertical/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: true, expectedView: gSubView1,
+          description: "Continuous scrolling test for sub view 1 (vertical/backward)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Horitontal wheel events should scroll |gSubView1|.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          description: "Continuous scrolling test for sub view 1 (horizontal/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: false, expectedView: gSubView1,
+          description: "Continuous scrolling test for sub view 1 (horizontal/backward)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Continuous scrolling test for |gSubView2|
+     *   |gSubView2| has only vertical scrollbar.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Vertical wheel events should scroll |gSubView2|.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView2,
+          isForward: true, isVertical: true, expectedView: gSubView2,
+          description: "Continuous scrolling test for sub view 2 (vertical/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView2,
+          isForward: false, isVertical: true, expectedView: gSubView2,
+          description: "Continuous scrolling test for sub view 2 (vertical/backward)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Horizontal wheel events should scroll its nearest scrollable ancestor
+        // view, i.e., it is |gRootView|.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView2,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Continuous scrolling test for sub view 2 (horizontal/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView2,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          description: "Continuous scrolling test for sub view 2 (horizontal/backward)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Continuous scrolling test for |gSubView3|
+     *   |gSubView3| has only horizontal scrollbar.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Vertical wheel events should scroll its nearest scrollable ancestor
+        // view, i.e., it is |gRootView|.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView3,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Continuous scrolling test for sub view 3 (vertical/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView3,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Continuous scrolling test for sub view 3 (vertical/backward)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Horitontal wheel events should scroll |gSubView3|.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView3,
+          isForward: true, isVertical: false, expectedView: gSubView3,
+          description: "Continuous scrolling test for sub view 3 (horizontal/forward)" },
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView3,
+          isForward: false, isVertical: false, expectedView: gSubView3,
+          description: "Continuous scrolling test for sub view 3 (horizontal/backward)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Don't reset transaction by a different direction wheel event
+     *   Even if a wheel event doesn't same direction as last wheel event, the
+     *   current transaction should not be reset.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical -> Horizontal
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView| by a vertical wheel
+        // event.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Don't reset transaction by a different direction wheel event (1-1)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Don't reset transaction by a different direction wheel event (1-2)" },
+        // Send a horizontal wheel event over |gSubView1| but |gRootView| should
+        // be scrolled.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Don't reset transaction by a different direction wheel event (1-3)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal -> Vertical
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView| by a horizontal wheel
+        // event.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Don't reset transaction by a different direction wheel event (2-1)" },
+        // Scroll back to left-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          description: "Don't reset transaction by a different direction wheel event (2-2)" },
+        // Send a vertical wheel event over |gSubView1| but |gRootView| should
+        // be scrolled.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Don't reset transaction by a different direction wheel event (2-3)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Don't reset transaction even if a wheel event cannot scroll
+     *   Even if a wheel event cannot scroll to specified direction in the
+     *   current target view, the transaction should not be reset.  E.g., there
+     *   are some devices which can scroll obliquely.  If so, probably, users
+     *   cannot input only intended direction.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // A view only has vertical scrollbar case.
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gSubView2|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView2,
+          isForward: true, isVertical: true, expectedView: gSubView2,
+          description: "Don't reset transaction even if a wheel event cannot scroll (1-1)" },
+        // |gSubView2| doesn't have horizontal scrollbar but should not scroll
+        // any views.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView2,
+          isForward: true, isVertical: false, expectedView: null,
+          description: "Don't reset transaction even if a wheel event cannot scroll (1-2)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // A view only has horizontal scrollbar case.
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gSubView3|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView3,
+          isForward: true, isVertical: false, expectedView: gSubView3,
+          description: "Don't reset transaction even if a wheel event cannot scroll (2-1)" },
+        // |gSubView3| doesn't have vertical scrollbar but should not scroll any
+        // views.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView3,
+          isForward: true, isVertical: true, expectedView: null,
+          description: "Don't reset transaction even if a wheel event cannot scroll (2-2)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Reset transaction by mouse down/mouse up events
+     *   Mouse down and mouse up events should cause resetting the current
+     *   transaction.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by mouse down/mouse up events (v-1)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by mouse down/mouse up events (v-2)" },
+        // Send mouse button events which should reset the current transaction.
+        // So, the next wheel event should scroll |gSubView1|.
+        { func: sendMouseButtonEvents, delay: 0,
+          description: "sendMouseButtonEvents" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          description: "Reset transaction by mouse down/mouse up events (v-3)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Reset transaction by mouse down/mouse up events (h-1)" },
+        // Scroll back to left-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          description: "Reset transaction by mouse down/mouse up events (h-2)" },
+        // Send mouse button events which should reset the current transaction.
+        // So, the next wheel event should scroll |gSubView1|.
+        { func: sendMouseButtonEvents, delay: 0,
+          description: "sendMouseButtonEvents" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          description: "Reset transaction by mouse down/mouse up events (h-3)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Reset transaction by a key event
+     *   A key event should cause resetting the current transaction.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by a key event (v-1)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by a key event (v-2)" },
+        // Send a key event which should reset the current transaction.  So, the
+        // next wheel event should scroll |gSubView1|.
+        { func: sendKeyEvents, delay: 0, key: "a",
+          description: "sendKeyEvents" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          description: "Reset transaction by a key event (v-3)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Reset transaction by a key event (h-1)" },
+        // Scroll back to left-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          description: "Reset transaction by a key event (h-2)" },
+        // Send a key event which should reset the current transaction.  So, the
+        // next wheel event should scroll |gSubView1|.
+        { func: sendKeyEvents, delay: 0, key: "a",
+          description: "sendKeyEvents" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          description: "Reset transaction by a key event (h-3)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Reset transaction by a mouse move event
+     *   A mouse move event can cause reseting the current transaction even if
+     *   mouse cursor is inside the target view of current transaction. Only
+     *   when a wheel event is fired after |gIgnoreMoveDelay| milliseconds since
+     *   the first mouse move event from last wheel event, the transaction
+     *   should be reset.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by a mouse move event (v-1)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by a mouse move event (v-2)" },
+        // Send a mouse move event immediately after last wheel event, then,
+        // current transaction should be kept.
+        { func: sendMouseMoveEvent, delay: 0, offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (v-3)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (v-4)" },
+        // Send a mouse move event after |gIgnoreMoveDelay| milliseconds since
+        // last wheel event, then, current transaction should be kept.
+        { func: sendMouseMoveEvent, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (v-5)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (v-6)" },
+        // Send a wheel event after |gIgnoreMoveDelay| milliseconds since last
+        // mouse move event but it is fired immediately after the last wheel
+        // event, then, current transaction should be kept.
+        { func: sendMouseMoveEvent, delay: 0, offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (v-7)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (v-8)" },
+        // Send a wheel event after |gIgnoreMoveDelay| milliseconds have passed
+        // since last mouse move event which is fired after |gIgnoreMoveDelay|
+        // milliseconds since last wheel event, then, current transaction should
+        // be reset.
+        { func: sendMouseMoveEvent, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          canFailRandomly: { possibleView: gRootView },
+          description: "Reset transaction by a mouse move event (v-9)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-1)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-2)" },
+        // Send a mouse move event immediately after last wheel event, then,
+        // current transaction should be kept.
+        { func: sendMouseMoveEvent, delay: 0, offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-3)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-4)" },
+        // Send a mouse move event after |gIgnoreMoveDelay| milliseconds since
+        // last wheel event, then, current transaction should be kept.
+        { func: sendMouseMoveEvent, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-5)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-6)" },
+        // Send a wheel event after |gIgnoreMoveDelay| milliseconds since last
+        // mouse move event but it is fired immediately after the last wheel
+        // event, then, current transaction should be kept.
+        { func: sendMouseMoveEvent, delay: 0, offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-7)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Reset transaction by a mouse move event (h-8)" },
+        // Send a wheel event after |gIgnoreMoveDelay| milliseconds have passed
+        // since last mouse move event which is fired after |gIgnoreMoveDelay|
+        // milliseconds since last wheel event, then, current transaction should
+        // be reset.
+        { func: sendMouseMoveEvent, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          description: "sendMouseMoveEvent" },
+        { func: testOneTimeScroll, delay: gEnoughForIgnoreMoveDelay,
+          offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          canFailRandomly: { possibleView: gRootView },
+          description: "Reset transaction by a mouse move event (h-9)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Reset transaction by a mouse move event on outside of view
+     *   When mouse cursor is moved to outside of the current target view, the
+     *   transaction should be reset immediately.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gSubView1|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          description: "Reset transaction by a mouse move event on outside of view (v-1)" },
+        // Send mouse move event over |gRootView|.
+        { func: sendMouseMoveEvent, delay: 0, offset: offsetForRootView,
+          description: "sendMouseMoveEvent" },
+        // Send Wheel event over |gRootView| which should be scrolled.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by a mouse move event on outside of view (v-2)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Create a transaction which targets |gSubView1|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          description: "Reset transaction by a mouse move event on outside of view (h-1)" },
+        // Send mouse move event over |gRootView|.
+        { func: sendMouseMoveEvent, delay: 0, offset: offsetForRootView,
+          description: "sendMouseMoveEvent" },
+        // Send Wheel event over |gRootView| which should be scrolled.
+        { func: testOneTimeScroll, delay: 0,  offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Reset transaction by a mouse move event on outside of view (h-2)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Timeout test
+     *   A view should not be scrolled during another to be transaction for
+     *   another view scrolling. However, a wheel event which is sent after
+     *   timeout, a view which is under the mouse cursor should be scrolled.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // First, create a transaction which should target the |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Timeout test (v-1)" },
+        // Scroll back to top-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          description: "Timeout test (v-2)" },
+        // A wheel event over |gSubView1| should not scroll it during current
+        // transaction.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Timeout test (v-3)" },
+        // Scroll back to top-most again.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: true, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Timeout test (v-4)" },
+        // A wheel event over |gSubView1| after timeout should scroll
+        // |gSubView1|.
+        { func: testOneTimeScroll, delay: gEnoughForTimeout,
+          offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          isTimeoutTesting: true,
+          description: "Timeout test (v-5)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // First, create a transaction which should target the |gRootView|.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Timeout test (h-1)" },
+        // Scroll back to left-most for easy cursor position specifying.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForRootView,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          description: "Timeout test (h-2)" },
+        // A wheel event over |gSubView1| should not scroll it during current
+        // transaction.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Timeout test (h-3)" },
+        // Scroll back to left-most again.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: false, isVertical: false, expectedView: gRootView,
+          canFailRandomly: { possibleView: gSubView1 },
+          description: "Timeout test (h-4)" },
+        // A wheel event over |gSubView1| after timeout should scroll
+        // |gSubView1|.
+        { func: testOneTimeScroll, delay: gEnoughForTimeout,
+          offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          isTimeoutTesting: true,
+          description: "Timeout test (h-5)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Timeout test even with many wheel events
+     *   This tests whether timeout is occurred event if wheel events are sent.
+     *   The transaction should not be updated by non-scrollable wheel events.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Vertical case
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Scroll |gSubView1| to bottom-most.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          description: "Timeout test even with many wheel events (v-1)" },
+        // Don't scroll any views before timeout.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: null,
+          canFailRandomly: { possibleView: gRootView },
+          description: "Timeout test even with many wheel events (v-2)" },
+        // Recreate a transaction which is scrolling |gRootView| after time out.
+        { func: testRestartScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gRootView,
+          description: "Timeout test even with many wheel events (v-3)" }
+      ]
+    },
+
+
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        // Horizontal case
+        { func: initElements, delay: 0, forVertical: false,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        // Scroll |gSubView1| to right-most.
+        { func: testContinuousScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          description: "Timeout test even with many wheel events (h-1)" },
+        // Don't scroll any views before timeout.
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: null,
+          canFailRandomly: { possibleView: gRootView },
+          description: "Timeout test even with many wheel events (h-2)" },
+        // Recreate a transaction which is scrolling |gRootView| after time out.
+        { func: testRestartScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gRootView,
+          description: "Timeout test even with many wheel events (h-3)" }
+      ]
+    },
+
+
+    /**************************************************************************
+     * Very large scrolling wheel event
+     *   If the delta value is larger than the scrolling page size, it should be
+     *   scrolled only one page instead of the delta value.
+     **************************************************************************/
+    { retryWhenTransactionTimeout: 5,
+      steps: [
+        { func: initElements, delay: 0, forVertical: true,
+          description: "initElements" },
+        { func: clearWheelTransaction, delay: 0,
+          description: "clearWheelTransaction" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          delta: 5000,
+          description: "Very large delta scrolling (v-1)" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: true, expectedView: gSubView1,
+          delta: 5000,
+          description: "Very large delta scrolling (v-2)" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          delta: 5000,
+          description: "Very large delta scrolling (h-1)" },
+        { func: testOneTimeScroll, delay: 0, offset: offsetForSubView1,
+          isForward: true, isVertical: false, expectedView: gSubView1,
+          delta: 5000,
+          description: "Very large delta scrolling (h-2)" }
+      ]
+    }
+  ];
+}
+
+/******************************************************************************
+ * Actions for preparing tests
+ ******************************************************************************/
+
+function initElements()
+{
+  _clearTimer();
+
+  function resetScrollPosition(aElement)
+  {
+    aElement.scrollTop = 0;
+    aElement.scrollLeft = 0;
+  }
+
+  const kDisplay = gCurrentTest.forVertical ? "block" : "inline-block";
+  gSubView1.style.display = kDisplay;
+  gSubView2.style.display = kDisplay;
+  gSubView3.style.display = kDisplay;
+
+  resetScrollPosition(gRootView);
+  resetScrollPosition(gSubView1);
+  resetScrollPosition(gSubView2);
+  resetScrollPosition(gSubView3);
+  _getDOMWindowUtils(window).advanceTimeAndRefresh(0);
+
+  runNextTestStep();
+}
+
+function clearWheelTransaction()
+{
+  _clearTimer();
+  _clearTransaction();
+  runNextTestStep();
+}
+
+function sendKeyEvents()
+{
+  _clearTimer();
+  synthesizeKey(gCurrentTest.key, {}, window);
+  runNextTestStep();
+}
+
+function sendMouseButtonEvents()
+{
+  _clearTimer();
+  synthesizeMouse(gRootView, -1, -1, { type:"mousedown" }, window);
+  synthesizeMouse(gRootView, -1, -1, { type:"mouseup" }, window);
+  runNextTestStep();
+}
+
+function sendMouseMoveEvent()
+{
+  _clearTimer();
+  _fireMouseMoveEvent(gCurrentTest.offset());
+  runNextTestStep();
+}
+
+/******************************************************************************
+ * Utilities for testing functions
+ ******************************************************************************/
+
+function _clearTransaction()
+{
+  synthesizeMouse(gRootView, -1, -1, { type:"mousedown" }, window);
+  synthesizeMouse(gRootView, -1, -1, { type:"mouseup" }, window);
+}
+
+function _saveScrollPositions()
+{
+  function save(aElement)
+  {
+    aElement.prevTop = aElement.scrollTop;
+    aElement.prevLeft = aElement.scrollLeft;
+  }
+  save(gRootView);
+  save(gSubView1);
+  save(gSubView2);
+  save(gSubView3);
+}
+
+function _fireMouseMoveEvent(aOffset)
+{
+  synthesizeMouse(gRootView, aOffset.x, aOffset.y, { type:"mousemove" }, window);
+}
+
+function _fireWheelScrollEvent(aOffset, aIsVertical, aForward, aDelta)
+{
+  var event = { deltaMode: WheelEvent.DOM_DELTA_LINE };
+  if (aIsVertical) {
+    event.deltaY = aForward ? aDelta : -aDelta;
+  } else {
+    event.deltaX = aForward ? aDelta : -aDelta;
+  }
+  sendWheelAndPaint(gRootView, aOffset.x, aOffset.y, event, null, window);
+}
+
+function _canScroll(aElement, aIsVertical, aForward)
+{
+  if (aIsVertical) {
+    if (!aForward)
+      return aElement.scrollTop > 0;
+    return aElement.scrollHeight > aElement.scrollTop + aElement.clientHeight;
+  }
+  if (!aForward)
+    return aElement.scrollLeft > 0;
+  return aElement.scrollWidth > aElement.scrollLeft + aElement.clientWidth;
+}
+
+const kNotScrolled      = 0;
+const kScrolledToTop    = 1;
+const kScrolledToBottom = 2;
+const kScrolledToLeft   = 4;
+const kScrolledToRight  = 8;
+
+const kScrolledVertical   = kScrolledToTop | kScrolledToBottom;
+const kScrolledHorizontal = kScrolledToLeft | kScrolledToRight;
+
+function _getScrolledState(aElement)
+{
+  var ret = kNotScrolled;
+  if (aElement.scrollTop != aElement.prevTop) {
+    ret |= aElement.scrollTop < aElement.prevTop ? kScrolledToTop :
+                                                   kScrolledToBottom;
+  }
+  if (aElement.scrollLeft != aElement.prevLeft) {
+    ret |= aElement.scrollLeft < aElement.prevLeft ? kScrolledToLeft :
+                                                     kScrolledToRight;
+  }
+  return ret;
+}
+
+function _getExpectedScrolledState()
+{
+  // eslint-disable-next-line no-nested-ternary
+  return gCurrentTest.isVertical ?
+           gCurrentTest.isForward ? kScrolledToBottom : kScrolledToTop :
+           gCurrentTest.isForward ? kScrolledToRight : kScrolledToLeft;
+}
+
+function _getScrolledStateText(aScrolledState)
+{
+  if (aScrolledState == kNotScrolled)
+    return "Not scrolled";
+
+  var s = "scrolled to ";
+  if (aScrolledState & kScrolledVertical) {
+    s += aScrolledState & kScrolledToTop ? "backward" : "forward";
+    s += " (vertical)"
+    if (aScrolledState & kScrolledHorizontal)
+      s += " and to ";
+  }
+  if (aScrolledState & kScrolledHorizontal) {
+    s += aScrolledState & kScrolledToLeft ? "backward" : "forward";
+    s += " (horizontal)"
+  }
+  return s;
+}
+
+function _getCurrentTestList()
+{
+  return gTestLists[gCurrentTestListStatus.nextListIndex - 1];
+}
+
+function _clearTimer()
+{
+  clearTimeout(gTimer);
+  gTimer = 0;
+}
+
+/******************************************************************************
+ * Testing functions
+ ******************************************************************************/
+
+/**
+ * Note that testing functions must set following variables:
+ *
+ *   gCurrentTest.repeatTest:  See comment in |continueTest|.
+ *   gCurrentTest.autoRepeatDelay:  See comment in |continueTest|.
+ *   gListenScrollEvent: When this is not true, the event handlers ignores the
+ *                       events.
+ */
+
+function testContinuousScroll()
+{
+  /**
+   * Testing continuous scrolling.  This function synthesizes a wheel event.  If
+   * the test was success, this function will be recalled automatically.
+   * And when a generating wheel event cannot scroll the expected view, this
+   * function fires the wheel event only one time.
+   *
+   * @param gCurrentTest.offset
+   *          A function to compute the cursor position of firing wheel event.
+   *          The values are offset from |gRootView|.
+   * @param gCurrentTest.isVertical
+   *          Whether the wheel event is for virtical scrolling or horizontal.
+   * @param gCurrentTest.isForward
+   *          Whether the wheel event is to forward or to backward.
+   * @param gCurrentTest.expectedView
+   *          The expected view which will be scrolled by wheel event. This
+   *          value must not be null.
+   */
+
+  _clearTimer();
+  _saveScrollPositions();
+  if (!gCurrentTest.expectedView) {
+    runNextTestStep();
+    return;
+  }
+
+  gLitesnEvents = kListenEvent_All;
+  gCurrentTest.repeatTest = true;
+  gCurrentTest.autoRepeatDelay = 0;
+
+  if (!_canScroll(gCurrentTest.expectedView,
+                  gCurrentTest.isVertical, gCurrentTest.isForward)) {
+    gCurrentTest.expectedView = null;
+  }
+  var delta = gCurrentTest.delta ? gCurrentTest.delta : 4;
+  _fireWheelScrollEvent(gCurrentTest.offset(),
+                        gCurrentTest.isVertical, gCurrentTest.isForward, delta);
+}
+
+function testOneTimeScroll()
+{
+  /**
+   * Testing one wheel event.  |runNextTestStep| will be called immediately
+   * after this function by |onScrollView| or |onTimeout|.
+   *
+   * @param gCurrentTest.offset
+   *          A function to compute the cursor position of firing wheel event.
+   *          The values are offset from |gRootView|.
+   * @param gCurrentTest.isVertical
+   *          Whether the wheel event is for virtical scrolling or horizontal.
+   * @param gCurrentTest.isForward
+   *          Whether the wheel event is to forward or to backward.
+   * @param gCurrentTest.expectedView
+   *          The expected view which will be scrolled by wheel event. This
+   *          value can be null.  It means any views should not be scrolled.
+   */
+
+  _clearTimer();
+  _saveScrollPositions();
+
+  gLitesnEvents = kListenEvent_All;
+  gCurrentTest.repeatTest = false;
+  gCurrentTest.autoRepeatDelay = 0;
+
+  var delta = gCurrentTest.delta ? gCurrentTest.delta : 4;
+  _fireWheelScrollEvent(gCurrentTest.offset(),
+                        gCurrentTest.isVertical, gCurrentTest.isForward, delta);
+}
+
+function testRestartScroll()
+{
+  /**
+   * Testing restart to scroll in expected view after timeout from the current
+   * transaction.  This function recall this itself until to success this test
+   * or timeout from this test.
+   *
+   * @param gCurrentTest.offset
+   *          A function to compute the cursor position of firing wheel event.
+   *          The values are offset from |gRootView|.
+   * @param gCurrentTest.isVertical
+   *          Whether the wheel event is for virtical scrolling or horizontal.
+   * @param gCurrentTest.isForward
+   *          Whether the wheel event is to forward or to backward.
+   * @param gCurrentTest.expectedView
+   *          The expected view which will be scrolled by wheel event. This
+   *          value must not be null.
+   */
+
+  _clearTimer();
+  _saveScrollPositions();
+
+  if (!gCurrentTest.wasTransactionTimeout) {
+    gCurrentTest.repeatTest = true;
+    gCurrentTest.autoRepeatDelay = gTimeout / 3;
+    gLitesnEvents = kListenEvent_All;
+    gCurrentTest.isTimeoutTesting = true;
+    if (gCurrentTest.expectedView) {
+      gCurrentTest.expectedViewAfterTimeout = gCurrentTest.expectedView;
+      gCurrentTest.expectedView = null;
+    }
+  } else {
+    gCurrentTest.repeatTest = false;
+    gCurrentTest.autoRepeatDelay = 0;
+    gLitesnEvents = kListenEvent_All;
+    gCurrentTest.isTimeoutTesting = false;
+    gCurrentTest.expectedView = gCurrentTest.expectedViewAfterTimeout;
+  }
+
+  var delta = gCurrentTest.delta ? gCurrentTest.delta : 4;
+  _fireWheelScrollEvent(gCurrentTest.offset(),
+                        gCurrentTest.isVertical, gCurrentTest.isForward, delta);
+}
+
+/******************************************************************************
+ * Event handlers
+ ******************************************************************************/
+
+function onScrollView(aEvent)
+{
+  /**
+   * Scroll event handler of |gRootView|, |gSubView1|, |gSubView2| and 
+   * |gSubView3|.  If testing is failed, this function cancels all left tests.
+   * For checking the event is expected, the event firer must call
+   * |_saveScrollPositions|.
+   *
+   * @param gCurrentTest.expectedView
+   *          The expected view which should be scrolled by the wheel event.
+   *          This value can be null.  It means any views should not be
+   *          scrolled.
+   * @param gCurrentTest.isVertical
+   *          The expected view should be scrolled vertical or horizontal.
+   * @param gCurrentTest.isForward
+   *          The expected view should be scrolled to forward or backward.
+   * @param gCurrentTest.canFailRandomly
+   *          If this is not undefined, this test can fail by unexpected view
+   *          scrolling which is caused by unexpected timeout.  If this is
+   *          defined, |gCurrentTest.possibleView| must be set.  If the view is
+   *          same as the event target, the failure can be random.  At this
+   *          time, we should retry the current test list.
+   */
+
+  if (!(gLitesnEvents & kListenEvent_OnScroll))
+    return;
+
+  // Now testing a timeout, but a view is scrolled before timeout.
+  if (gCurrentTest.isTimeoutTesting && !gCurrentTest.wasTransactionTimeout) {
+    is(aEvent.target.id, "",
+       "The view scrolled before timeout (the expected view after timeout is " +
+         gCurrentTest.expectedView ? gCurrentTest.expectedView.id : "null" +
+         "): " + gCurrentTest.description);
+    runNextTestList();
+    return;
+  }
+
+  // Check whether the scrolled event should be fired or not.
+  if (!gCurrentTest.expectedView) {
+    is(aEvent.target.id, "",
+         "no views should be scrolled (" +
+         _getScrolledStateText(_getScrolledState(aEvent.target)) + "): " +
+         gCurrentTest.description);
+    runNextTestList();
+    return;
+  }
+
+  // Check whether the scrolled view is expected or not.
+  if (aEvent.target != gCurrentTest.expectedView) {
+    // If current test can fail randomly and the possible view is same as the
+    // event target, this failure may be caused by unexpected timeout.
+    // At this time, we should retry the current tests with slower settings.
+    if (gCurrentTest.canFailRandomly &&
+        gCurrentTest.canFailRandomly.possibleView == aEvent.target &&
+        gCurrentTestListStatus.retryWhenTransactionTimeout > 0) {
+      gCurrentTestListStatus.retryWhenTransactionTimeout--;
+      retryCurrentTestList();
+      return;
+    }
+    is(aEvent.target.id, gCurrentTest.expectedView.id,
+       "wrong view was scrolled: " + gCurrentTest.description);
+    runNextTestList();
+    return;
+  }
+
+  // Check whether the scrolling direction is expected or not.
+  var expectedState = _getExpectedScrolledState();
+  var currentState = _getScrolledState(aEvent.target);
+  if (expectedState != currentState) {
+    is(_getScrolledStateText(currentState),
+       _getScrolledStateText(expectedState),
+       "scrolled to wrong direction: " + gCurrentTest.description);
+    runNextTestList();
+    return;
+  }
+
+  ok(true, "passed: " + gCurrentTest.description);
+  continueTest();
+}
+
+function onMouseScrollFailed()
+{
+  /**
+   * Scroll failed event handler. If testing is failed, this function cancels
+   * all remains of current test-list, and go to next test-list.
+   *
+   * NOTE: This event is fired immediately after |_fireWheelScrollEvent|.
+   *
+   * @param gCurrentTest.expectedView
+   *          The expected view which should be scrolled by the wheel event.
+   *          This value can be null.  It means any views should not be
+   *          scrolled.  When this is not null, this event means the test may
+   *          be failed.
+   */
+
+  if (!(gLitesnEvents & kListenEvent_OnScrollFailed))
+    return;
+
+  ok(!gCurrentTest.expectedView,
+     "failed to scroll on current target: " + gCurrentTest.description);
+  if (gCurrentTest.expectedView) {
+    runNextTestList();
+    return;
+  }
+
+  continueTest();
+}
+
+function onTransactionTimeout()
+{
+  /**
+   * Scroll transaction timeout event handler.  If the timeout is unexpected,
+   * i.e., |gCurrentTest.isTimeoutTesting| is not true, this function retry
+   * the current test-list.  However, if the current test-list failed by timeout
+   * |gCurrentTestListStatus.retryWhenTransactionTimeout| times already, marking
+   * to failed the current test-list, and go to next test-list.
+   *
+   * @param gCurrentTest.expectedView
+   *          The expected view which should be scrolled by the wheel event.
+   *          This value can be null.  It means any views should not be
+   *          scrolled.  When this is not null, this event means the testing may
+   *          be failed.
+   * @param gCurrentTest.isTimeoutTesting
+   *          If this value is true, the current testing have waited this
+   *          event.  Otherwise, the testing may be failed.
+   * @param gCurrentTestListStatus.retryWhenTransactionTimeout
+   *          If |gCurrentTest.isTimeoutTesting| is not true but this event is
+   *          fired, the failure may be randomly.  Then, this event handler
+   *          retry to test the current test-list until this cound will be zero.
+   */
+
+  if (!gCurrentTest.isTimeoutTesting &&
+      gCurrentTestListStatus.retryWhenTransactionTimeout > 0) {
+    gCurrentTestListStatus.retryWhenTransactionTimeout--;
+    // retry current test list
+    retryCurrentTestList();
+    return;
+  }
+
+  gCurrentTest.wasTransactionTimeout = true;
+
+  if (!(gLitesnEvents & kListenEvent_OnTransactionTimeout))
+    return;
+
+  ok(gCurrentTest.isTimeoutTesting,
+     "transaction timeout: " + gCurrentTest.description);
+  if (!gCurrentTest.isTimeoutTesting) {
+    runNextTestList();
+    return;
+  }
+
+  continueTest();
+}
+
+/******************************************************************************
+ * Main function for this tests
+ ******************************************************************************/
+
+function runNextTestStep()
+{
+  // When this is first time or the current test list is finised, load next
+  // test-list.
+  _clearTimer();
+  if (!gCurrentTest)
+    runNextTestList();
+  else
+    runTestStepAt(gCurrentTestListStatus.nextStepIndex);
+}
+
+function runNextTestList()
+{
+  _clearTimer();
+
+  gLitesnEvents = kListenEvent_None;
+  _clearTransaction();
+  resetTimeoutPrefs();
+  if (gCurrentTestListStatus.nextListIndex >= gTestLists.length) {
+    finish();
+    return;
+  }
+
+  gCurrentTestListStatus.nextListIndex++;
+  gCurrentTestListStatus.retryWhenTransactionTimeout =
+    _getCurrentTestList().retryWhenTransactionTimeout;
+  runTestStepAt(0);
+}
+
+function runTestStepAt(aStepIndex)
+{
+  _clearTimer();
+
+  disableNonTestMouseEvents(true);
+
+  // load a step of testing.
+  gCurrentTestListStatus.nextStepIndex = aStepIndex;
+  gCurrentTest =
+    _getCurrentTestList().steps[gCurrentTestListStatus.nextStepIndex++];
+  if (gCurrentTest) {
+    gCurrentTest.wasTransactionTimeout = false;
+    gTimer = setTimeout(gCurrentTest.func, gCurrentTest.delay);
+  } else {
+    // If current test-list doesn't have more testing, go to next test-list
+    // after cleaning up the current transaction.
+    _clearTransaction();
+    runNextTestList();
+  }
+}
+
+function retryCurrentTestList()
+{
+  _clearTimer();
+
+  gLitesnEvents = kListenEvent_None;
+  _clearTransaction();
+  ok(true, "WARNING: retry current test-list...");
+  growUpTimeoutPrefs(); // retry the test with longer timeout settings.
+  runTestStepAt(0);
+}
+
+function continueTest()
+{
+  /**
+   * This function is called from an event handler when a test succeeded.
+   *
+   * @param gCurrentTest.repeatTest
+   *          When this is true, onScrollView calls |gCurrentTest.func|. So,
+   *          same test can repeat.  Otherwise, this calls |runNextTestStep|.
+   * @param gCurrentTest.autoRepeatDelay
+   *          The delay value in milliseconds, this is used to call
+   *          |gCurrentTest.func| via |setTimeout|.
+   */
+
+  _clearTimer();
+  gLitesnEvents = kListenEvent_OnTransactionTimeout;
+
+  // We should call each functions via setTimeout. Because sometimes this test
+  // is broken by stack overflow.
+  if (gCurrentTest.repeatTest) {
+    gTimer = setTimeout(gCurrentTest.func, gCurrentTest.autoRepeatDelay);
+  } else {
+    gTimer = setTimeout(runNextTestStep, 0);
+  }
+}
+
+]]>
+</script>
+
+</window>