Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

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

12 files changed, 1184 insertions, 0 deletions

diff --git a/accessible/tests/browser/events/browser.ini b/accessible/tests/browser/events/browser.ini
new file mode 100644
index 0000000000..576d3e53ab
--- /dev/null
+++ b/accessible/tests/browser/events/browser.ini
@@ -0,0 +1,24 @@
+[DEFAULT]
+subsuite = a11y
+support-files =
+  head.js
+  !/accessible/tests/browser/shared-head.js
+  !/accessible/tests/mochitest/*.js
+  !/accessible/tests/browser/*.jsm
+prefs =
+  javascript.options.asyncstack_capture_debuggee_only=false
+
+[browser_test_A11yUtils_announce.js]
+[browser_test_caret_move_granularity.js]
+[browser_test_docload.js]
+skip-if = true
+[browser_test_focus_browserui.js]
+[browser_test_focus_dialog.js]
+[browser_test_focus_urlbar.js]
+skip-if =
+  os == "linux" # Bug 1782783
+  os == "win" # Bug 1818994
+[browser_test_panel.js]
+[browser_test_scrolling.js]
+[browser_test_selection_urlbar.js]
+[browser_test_textcaret.js]
diff --git a/accessible/tests/browser/events/browser_test_A11yUtils_announce.js b/accessible/tests/browser/events/browser_test_A11yUtils_announce.js
new file mode 100644
index 0000000000..b2848f35c2
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_A11yUtils_announce.js
@@ -0,0 +1,57 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Check that the browser A11yUtils.announce() function works correctly.
+// Note that this does not use mozilla::a11y::Accessible::Announce and a11y
+// announcement events, as these aren't yet supported on desktop.
+async function runTests() {
+  const alert = document.getElementById("a11y-announcement");
+  let alerted = waitForEvent(EVENT_ALERT, alert);
+  A11yUtils.announce({ raw: "first" });
+  let event = await alerted;
+  const alertAcc = event.accessible;
+  is(alertAcc.role, ROLE_ALERT);
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  is(alertAcc.firstChild.name, "first");
+
+  alerted = waitForEvent(EVENT_ALERT, alertAcc);
+  A11yUtils.announce({ raw: "second" });
+  event = await alerted;
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  is(alertAcc.firstChild.name, "second");
+
+  info("Testing Fluent message");
+  // We need a simple Fluent message here without arguments or attributes.
+  const fluentId = "search-one-offs-with-title";
+  const fluentMessage = await document.l10n.formatValue(fluentId);
+  alerted = waitForEvent(EVENT_ALERT, alertAcc);
+  A11yUtils.announce({ id: fluentId });
+  event = await alerted;
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  is(alertAcc.firstChild.name, fluentMessage);
+
+  info("Ensuring Fluent message is cancelled if announce is re-entered");
+  alerted = waitForEvent(EVENT_ALERT, alertAcc);
+  // This call runs async.
+  let asyncAnnounce = A11yUtils.announce({ id: fluentId });
+  // Before the async call finishes, call announce again.
+  A11yUtils.announce({ raw: "third" });
+  // Wait for the async call to complete.
+  await asyncAnnounce;
+  event = await alerted;
+  ok(!alertAcc.name);
+  is(alertAcc.childCount, 1);
+  // The async call should have been cancelled. If it wasn't, we would get
+  // fluentMessage here instead of "third".
+  is(alertAcc.firstChild.name, "third");
+}
+
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_caret_move_granularity.js b/accessible/tests/browser/events/browser_test_caret_move_granularity.js
new file mode 100644
index 0000000000..c72ae42d85
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_caret_move_granularity.js
@@ -0,0 +1,102 @@
+/* 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/. */
+
+"use strict";
+
+const CLUSTER_AMOUNT = Ci.nsISelectionListener.CLUSTER_AMOUNT;
+const WORD_AMOUNT = Ci.nsISelectionListener.WORD_AMOUNT;
+const LINE_AMOUNT = Ci.nsISelectionListener.LINE_AMOUNT;
+const BEGINLINE_AMOUNT = Ci.nsISelectionListener.BEGINLINE_AMOUNT;
+const ENDLINE_AMOUNT = Ci.nsISelectionListener.ENDLINE_AMOUNT;
+
+const isMac = AppConstants.platform == "macosx";
+
+function matchCaretMoveEvent(id, caretOffset) {
+  return evt => {
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    return (
+      getAccessibleDOMNodeID(evt.accessible) == id &&
+      evt.caretOffset == caretOffset
+    );
+  };
+}
+
+addAccessibleTask(
+  `<textarea id="textarea" style="scrollbar-width: none;" cols="15">` +
+    `one two three four five six seven eight` +
+    `</textarea>`,
+  async function (browser, accDoc) {
+    const textarea = findAccessibleChildByID(accDoc, "textarea");
+    let caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 0)
+    );
+    textarea.takeFocus();
+    let evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 1)
+    );
+    EventUtils.synthesizeKey("KEY_ArrowRight");
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, CLUSTER_AMOUNT, "Caret moved by cluster");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 15)
+    );
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    todo(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, LINE_AMOUNT, "Caret moved by line");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 14)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { metaKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_Home");
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, BEGINLINE_AMOUNT, "Caret moved to line start");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 28)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowRight", { metaKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_End");
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(evt.isAtEndOfLine, "Caret is at end of line");
+    is(evt.granularity, ENDLINE_AMOUNT, "Caret moved to line end");
+
+    caretMoved = waitForEvent(
+      EVENT_TEXT_CARET_MOVED,
+      matchCaretMoveEvent("textarea", 24)
+    );
+    if (isMac) {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { altKey: true });
+    } else {
+      EventUtils.synthesizeKey("KEY_ArrowLeft", { ctrlKey: true });
+    }
+    evt = await caretMoved;
+    evt.QueryInterface(nsIAccessibleCaretMoveEvent);
+    ok(!evt.isAtEndOfLine, "Caret is not at end of line");
+    is(evt.granularity, WORD_AMOUNT, "Caret moved by word");
+  }
+);
diff --git a/accessible/tests/browser/events/browser_test_docload.js b/accessible/tests/browser/events/browser_test_docload.js
new file mode 100644
index 0000000000..11ba90db19
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_docload.js
@@ -0,0 +1,122 @@
+/* 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/. */
+
+"use strict";
+
+function busyChecker(isBusy) {
+  return function (event) {
+    let scEvent;
+    try {
+      scEvent = event.QueryInterface(nsIAccessibleStateChangeEvent);
+    } catch (e) {
+      return false;
+    }
+
+    return scEvent.state == STATE_BUSY && scEvent.isEnabled == isBusy;
+  };
+}
+
+function inIframeChecker(iframeId) {
+  return function (event) {
+    return getAccessibleDOMNodeID(event.accessibleDocument.parent) == iframeId;
+  };
+}
+
+function urlChecker(url) {
+  return function (event) {
+    info(`${event.accessibleDocument.URL} == ${url}`);
+    return event.accessibleDocument.URL == url;
+  };
+}
+
+async function runTests(browser, accDoc) {
+  let onLoadEvents = waitForEvents({
+    expected: [
+      [EVENT_REORDER, getAccessible(browser)],
+      [EVENT_DOCUMENT_LOAD_COMPLETE, "body2"],
+      [EVENT_STATE_CHANGE, busyChecker(false)],
+    ],
+    unexpected: [
+      [EVENT_DOCUMENT_LOAD_COMPLETE, inIframeChecker("iframe1")],
+      [EVENT_STATE_CHANGE, inIframeChecker("iframe1")],
+    ],
+  });
+
+  BrowserTestUtils.loadURIString(
+    browser,
+    `data:text/html;charset=utf-8,
+    <html><body id="body2">
+      <iframe id="iframe1" src="http://example.com"></iframe>
+    </body></html>`
+  );
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("about:about")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  BrowserTestUtils.loadURIString(browser, "about:about");
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_RELOAD, evt => evt.isFromUserInput],
+    [EVENT_REORDER, getAccessible(browser)],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+  ]);
+
+  EventUtils.synthesizeKey("VK_F5", {}, browser.ownerGlobal);
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("about:mozilla")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  BrowserTestUtils.loadURIString(browser, "about:mozilla");
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_RELOAD, evt => !evt.isFromUserInput],
+    [EVENT_REORDER, getAccessible(browser)],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+  ]);
+
+  browser.reload();
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("http://www.wronguri.wronguri/")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  BrowserTestUtils.loadURIString(browser, "http://www.wronguri.wronguri/");
+
+  await onLoadEvents;
+
+  onLoadEvents = waitForEvents([
+    [EVENT_DOCUMENT_LOAD_COMPLETE, urlChecker("https://nocert.example.com/")],
+    [EVENT_STATE_CHANGE, busyChecker(false)],
+    [EVENT_REORDER, getAccessible(browser)],
+  ]);
+
+  BrowserTestUtils.loadURIString(browser, "https://nocert.example.com:443/");
+
+  await onLoadEvents;
+}
+
+/**
+ * Test caching of accessible object states
+ */
+addAccessibleTask("", runTests);
diff --git a/accessible/tests/browser/events/browser_test_focus_browserui.js b/accessible/tests/browser/events/browser_test_focus_browserui.js
new file mode 100644
index 0000000000..969d336c74
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_focus_browserui.js
@@ -0,0 +1,57 @@
+/* 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/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+async function runTests(browser, accDoc) {
+  await SpecialPowers.pushPrefEnv({
+    // If Fission is disabled, the pref is no-op.
+    set: [["fission.bfcacheInParent", true]],
+  });
+
+  let onFocus = waitForEvent(EVENT_FOCUS, "input");
+  EventUtils.synthesizeKey("VK_TAB", {}, browser.ownerGlobal);
+  let evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "buttonInputDoc");
+  let url = snippetToURL(`<input id="input" type="button" value="button">`, {
+    contentDocBodyAttrs: { id: "buttonInputDoc" },
+  });
+  browser.loadURI(Services.io.newURI(url), {
+    triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),
+  });
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "input");
+  browser.goBack();
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.DOMNode == gURLBar.inputField
+  );
+  EventUtils.synthesizeKey("t", { accelKey: true }, browser.ownerGlobal);
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "input");
+  EventUtils.synthesizeKey("w", { accelKey: true }, browser.ownerGlobal);
+  evt = await onFocus;
+  testStates(evt.accessible, STATE_FOCUSED);
+}
+
+/**
+ * Accessibility loading document events test.
+ */
+addAccessibleTask(`<input id="input">`, runTests);
diff --git a/accessible/tests/browser/events/browser_test_focus_dialog.js b/accessible/tests/browser/events/browser_test_focus_dialog.js
new file mode 100644
index 0000000000..71485a678d
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_focus_dialog.js
@@ -0,0 +1,76 @@
+/* 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/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+async function runTests(browser, accDoc) {
+  let onFocus = waitForEvent(EVENT_FOCUS, "button");
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document.getElementById("button").focus();
+  });
+  let button = (await onFocus).accessible;
+  testStates(button, STATE_FOCUSED);
+
+  // Bug 1377942 - The target of the focus event changes under different
+  // circumstances.
+  // In e10s the focus event is the new window, in non-e10s it's the doc.
+  onFocus = waitForEvent(EVENT_FOCUS, () => true);
+  let newWin = await BrowserTestUtils.openNewBrowserWindow();
+  // button should be blurred
+  await onFocus;
+  testStates(button, 0, 0, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "button");
+  await BrowserTestUtils.closeWindow(newWin);
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "body2");
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document
+      .getElementById("editabledoc")
+      .contentWindow.document.body.focus();
+  });
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+
+  onFocus = waitForEvent(EVENT_FOCUS, "body2");
+  newWin = await BrowserTestUtils.openNewBrowserWindow();
+  await BrowserTestUtils.closeWindow(newWin);
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+
+  let onShow = waitForEvent(EVENT_SHOW, "alertdialog");
+  onFocus = waitForEvent(EVENT_FOCUS, "alertdialog");
+  await SpecialPowers.spawn(browser, [], () => {
+    let alertDialog = content.document.getElementById("alertdialog");
+    alertDialog.style.display = "block";
+    alertDialog.focus();
+  });
+  await onShow;
+  testStates((await onFocus).accessible, STATE_FOCUSED);
+}
+
+/**
+ * Accessible dialog focus testing
+ */
+addAccessibleTask(
+  `
+  <button id="button">button</button>
+  <iframe id="editabledoc"
+          src="${snippetToURL("", {
+            contentDocBodyAttrs: { id: "body2", contentEditable: "true" },
+          })}">
+  </iframe>
+  <div id="alertdialog" style="display: none" tabindex="-1" role="alertdialog" aria-labelledby="title2" aria-describedby="desc2">
+    <div id="title2">Blah blah</div>
+    <div id="desc2">Woof woof woof.</div>
+    <button>Close</button>
+  </div>`,
+  runTests
+);
diff --git a/accessible/tests/browser/events/browser_test_focus_urlbar.js b/accessible/tests/browser/events/browser_test_focus_urlbar.js
new file mode 100644
index 0000000000..68b2b07f3c
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_focus_urlbar.js
@@ -0,0 +1,438 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/states.js */
+/* import-globals-from ../../mochitest/role.js */
+loadScripts(
+  { name: "states.js", dir: MOCHITESTS_DIR },
+  { name: "role.js", dir: MOCHITESTS_DIR }
+);
+
+ChromeUtils.defineESModuleGetters(this, {
+  PlacesTestUtils: "resource://testing-common/PlacesTestUtils.sys.mjs",
+  PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs",
+  UrlbarProvider: "resource:///modules/UrlbarUtils.sys.mjs",
+  UrlbarProvidersManager: "resource:///modules/UrlbarProvidersManager.sys.mjs",
+  UrlbarResult: "resource:///modules/UrlbarResult.sys.mjs",
+  UrlbarTestUtils: "resource://testing-common/UrlbarTestUtils.sys.mjs",
+  UrlbarUtils: "resource:///modules/UrlbarUtils.sys.mjs",
+});
+
+function isEventForAutocompleteItem(event) {
+  return event.accessible.role == ROLE_COMBOBOX_OPTION;
+}
+
+function isEventForButton(event) {
+  return event.accessible.role == ROLE_PUSHBUTTON;
+}
+
+function isEventForOneOffEngine(event) {
+  let parent = event.accessible.parent;
+  return (
+    event.accessible.role == ROLE_PUSHBUTTON &&
+    parent &&
+    parent.role == ROLE_GROUPING &&
+    parent.name
+  );
+}
+
+function isEventForMenuPopup(event) {
+  return event.accessible.role == ROLE_MENUPOPUP;
+}
+
+function isEventForMenuItem(event) {
+  return event.accessible.role == ROLE_MENUITEM;
+}
+
+function isEventForResultButton(event) {
+  let parent = event.accessible.parent;
+  return (
+    event.accessible.role == ROLE_PUSHBUTTON &&
+    parent?.role == ROLE_COMBOBOX_LIST
+  );
+}
+
+/**
+ * A test provider.
+ */
+class TipTestProvider extends UrlbarProvider {
+  constructor(matches) {
+    super();
+    this._matches = matches;
+  }
+  get name() {
+    return "TipTestProvider";
+  }
+  get type() {
+    return UrlbarUtils.PROVIDER_TYPE.PROFILE;
+  }
+  isActive(context) {
+    return true;
+  }
+  isRestricting(context) {
+    return true;
+  }
+  async startQuery(context, addCallback) {
+    this._context = context;
+    for (const match of this._matches) {
+      addCallback(this, match);
+    }
+  }
+}
+
+// Check that the URL bar manages accessibility focus appropriately.
+async function runTests() {
+  registerCleanupFunction(async function () {
+    await UrlbarTestUtils.promisePopupClose(window);
+    await PlacesUtils.history.clear();
+  });
+
+  await PlacesTestUtils.addVisits([
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example1.com/blah",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example2.com/blah",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example1.com/",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example2.com/",
+  ]);
+
+  // Ensure initial state.
+  await UrlbarTestUtils.promisePopupClose(window);
+
+  let focused = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+  gURLBar.focus();
+  let event = await focused;
+  let textBox = event.accessible;
+  // Ensure the URL bar is ready for a new URL to be typed.
+  // Sometimes, when this test runs, the existing text isn't selected when the
+  // URL bar is focused. Pressing escape twice ensures that the popup is
+  // closed and that the existing text is selected.
+  EventUtils.synthesizeKey("KEY_Escape");
+  EventUtils.synthesizeKey("KEY_Escape");
+
+  info("Ensuring no focus change when first text is typed");
+  await UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    waitForFocus,
+    value: "example",
+    fireInputEvent: true,
+  });
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring no focus change on backspace");
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring no focus change on text selection and delete");
+  EventUtils.synthesizeKey("KEY_ArrowLeft", { shiftKey: true });
+  EventUtils.synthesizeKey("KEY_Delete");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on down arrow (1)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring focus of another autocomplete item on down arrow");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring previous arrow selection state doesn't get stale on input");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.sendString("z");
+  await focused;
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring focus of another autocomplete item on down arrow");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  if (AppConstants.platform == "macosx") {
+    info("Ensuring focus of another autocomplete item on ctrl-n");
+    focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+    EventUtils.synthesizeKey("n", { ctrlKey: true });
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+
+    info("Ensuring focus of another autocomplete item on ctrl-p");
+    focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+    EventUtils.synthesizeKey("p", { ctrlKey: true });
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+  }
+
+  info("Ensuring focus of another autocomplete item on up arrow");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on left arrow");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_ArrowLeft");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+
+  gURLBar.view.close();
+  // On Mac, down arrow when not at the end of the field moves to the end.
+  // Move back to the end so the next press of down arrow opens the popup.
+  EventUtils.synthesizeKey("KEY_ArrowRight");
+
+  info("Ensuring autocomplete focus on down arrow (2)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on arrow up for search settings button");
+  focused = waitForEvent(EVENT_FOCUS, isEventForButton);
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus when text is typed");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.sendString("z");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await UrlbarTestUtils.promiseSearchComplete(window);
+
+  info("Ensuring autocomplete focus on down arrow (3)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on backspace");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_Backspace");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+  await UrlbarTestUtils.promiseSearchComplete(window);
+
+  info("Ensuring autocomplete focus on arrow down (4)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  // Arrow down to the last result.
+  const resultCount = UrlbarTestUtils.getResultCount(window);
+  while (UrlbarTestUtils.getSelectedRowIndex(window) != resultCount - 1) {
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+  }
+
+  info("Ensuring one-off search button focus on arrow down");
+  focused = waitForEvent(EVENT_FOCUS, isEventForOneOffEngine);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on arrow up");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on text selection");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_ArrowLeft", { shiftKey: true });
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+
+  if (AppConstants.platform == "macosx") {
+    // On Mac, ctrl-n after arrow left/right does not re-open the popup.
+    // Type some text so the next press of ctrl-n opens the popup.
+    EventUtils.sendString("ple");
+
+    info("Ensuring autocomplete focus on ctrl-n");
+    focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+    EventUtils.synthesizeKey("n", { ctrlKey: true });
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+  }
+
+  if (
+    AppConstants.platform == "macosx" &&
+    Services.prefs.getBoolPref("widget.macos.native-context-menus", false)
+  ) {
+    // With native context menus, we do not observe accessibility events and we
+    // cannot send synthetic key events to the menu.
+    info("Opening and closing context native context menu");
+    let contextMenu = gURLBar.querySelector("menupopup");
+    let popupshown = BrowserTestUtils.waitForEvent(contextMenu, "popupshown");
+    EventUtils.synthesizeMouseAtCenter(gURLBar.querySelector("moz-input-box"), {
+      type: "contextmenu",
+    });
+    await popupshown;
+    let popuphidden = BrowserTestUtils.waitForEvent(contextMenu, "popuphidden");
+    contextMenu.hidePopup();
+    await popuphidden;
+  } else {
+    info(
+      "Ensuring context menu gets menu event on launch, and item focus on down"
+    );
+    let menuEvent = waitForEvent(
+      nsIAccessibleEvent.EVENT_MENUPOPUP_START,
+      isEventForMenuPopup
+    );
+    EventUtils.synthesizeMouseAtCenter(gURLBar.querySelector("moz-input-box"), {
+      type: "contextmenu",
+    });
+    await menuEvent;
+
+    focused = waitForEvent(EVENT_FOCUS, isEventForMenuItem);
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    event = await focused;
+    testStates(event.accessible, STATE_FOCUSED);
+
+    focused = waitForEvent(EVENT_FOCUS, textBox);
+    let closed = waitForEvent(
+      nsIAccessibleEvent.EVENT_MENUPOPUP_END,
+      isEventForMenuPopup
+    );
+    EventUtils.synthesizeKey("KEY_Escape");
+    await closed;
+    await focused;
+  }
+  info("Ensuring address bar is focused after context menu is dismissed.");
+  testStates(textBox, STATE_FOCUSED);
+}
+
+// We test TIP results in their own test so the spoofed results don't interfere
+// with the main test.
+async function runTipTests() {
+  let matches = [
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      { url: "http://mozilla.org/a" }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.TIP,
+      UrlbarUtils.RESULT_SOURCE.OTHER_LOCAL,
+      {
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        helpUrl: "http://example.com/",
+        type: "test",
+        titleL10n: { id: "urlbar-search-tips-confirm" },
+        buttons: [
+          {
+            // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+            url: "http://example.com/",
+            l10n: { id: "urlbar-search-tips-confirm" },
+          },
+        ],
+      }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      { url: "http://mozilla.org/b" }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      { url: "http://mozilla.org/c" }
+    ),
+  ];
+
+  // Ensure the tip appears in the expected position.
+  matches[1].suggestedIndex = 2;
+
+  let provider = new TipTestProvider(matches);
+  UrlbarProvidersManager.registerProvider(provider);
+
+  registerCleanupFunction(async function () {
+    UrlbarProvidersManager.unregisterProvider(provider);
+  });
+
+  let focused = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+  gURLBar.focus();
+  let event = await focused;
+  let textBox = event.accessible;
+
+  EventUtils.synthesizeKey("KEY_Escape");
+  EventUtils.synthesizeKey("KEY_Escape");
+
+  info("Ensuring no focus change when first text is typed");
+  await UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    waitForFocus,
+    value: "example",
+    fireInputEvent: true,
+  });
+  // Wait a tick for a11y events to fire.
+  await TestUtils.waitForTick();
+  testStates(textBox, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on down arrow (1)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring the tip button is focused on down arrow");
+  info("Also ensuring that the tip button is a part of a labelled group");
+  focused = waitForEvent(EVENT_FOCUS, isEventForResultButton);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring the help button is focused on tab");
+  info("Also ensuring that the help button is a part of a labelled group");
+  focused = waitForEvent(EVENT_FOCUS, isEventForResultButton);
+  EventUtils.synthesizeKey("KEY_Tab");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring autocomplete focus on down arrow (2)");
+  focused = waitForEvent(EVENT_FOCUS, isEventForAutocompleteItem);
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring the help button is focused on shift+tab");
+  focused = waitForEvent(EVENT_FOCUS, isEventForResultButton);
+  EventUtils.synthesizeKey("KEY_Tab", { shiftKey: true });
+  event = await focused;
+  testStates(event.accessible, STATE_FOCUSED);
+
+  info("Ensuring text box focus on left arrow, and not back to the tip button");
+  focused = waitForEvent(EVENT_FOCUS, textBox);
+  EventUtils.synthesizeKey("KEY_ArrowLeft");
+  await focused;
+  testStates(textBox, STATE_FOCUSED);
+}
+
+addAccessibleTask(``, runTests);
+addAccessibleTask(``, runTipTests);
diff --git a/accessible/tests/browser/events/browser_test_panel.js b/accessible/tests/browser/events/browser_test_panel.js
new file mode 100644
index 0000000000..f2d74cc5f9
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_panel.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+// Verify we recieve hide and show notifications when the chrome
+// XUL alert is closed or opened. Mac expects both notifications to
+// properly communicate live region changes.
+async function runTests(browser) {
+  ok(PopupNotifications, "PopupNotifications object exists");
+  ok(PopupNotifications.panel, "PopupNotifications panel exists");
+
+  // When available, the popup panel makes itself a child of the chrome window.
+  // To verify it isn't accessible without reproducing the entirety of the chrome
+  // window tree, we check instead that the panel is not accessible.
+  ok(!isAccessible(PopupNotifications.panel), "Popup panel is not accessible");
+
+  const panelShown = waitForEvent(EVENT_SHOW, PopupNotifications.panel);
+  const notification = PopupNotifications.show(
+    browser,
+    "test-notification",
+    "hello world",
+    PopupNotifications.panel.id
+  );
+
+  await panelShown;
+
+  ok(isAccessible(PopupNotifications.panel), "Popup panel is accessible");
+  testAccessibleTree(PopupNotifications.panel, {
+    ALERT: [
+      {
+        TEXT_CONTAINER: [
+          { LABEL: [{ TEXT_LEAF: [] }] },
+          { PUSHBUTTON: [] },
+          { PUSHBUTTON: [] },
+        ],
+      },
+    ],
+  });
+  // Verify the popup panel is associated with the chrome window.
+  is(
+    PopupNotifications.panel.ownerGlobal,
+    getMainChromeWindow(window),
+    "Popup panel is associated with the chrome window"
+  );
+
+  const panelHidden = waitForEvent(EVENT_HIDE, PopupNotifications.panel);
+  PopupNotifications.remove(notification);
+
+  await panelHidden;
+
+  ok(!isAccessible(PopupNotifications.panel), "Popup panel is not accessible");
+}
+
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_scrolling.js b/accessible/tests/browser/events/browser_test_scrolling.js
new file mode 100644
index 0000000000..f1f4b07120
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_scrolling.js
@@ -0,0 +1,113 @@
+/* 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/. */
+
+"use strict";
+
+addAccessibleTask(
+  `
+    <div style="height: 100vh" id="one">one</div>
+    <div style="height: 100vh" id="two">two</div>
+    <div style="height: 100vh; width: 200vw; overflow: auto;" id="three">
+      <div style="height: 300%;">three</div>
+    </div>
+    <textarea id="textarea" rows="1">a
+b
+c</textarea>
+  `,
+  async function (browser, accDoc) {
+    let onScrolling = waitForEvents([
+      [EVENT_SCROLLING, accDoc],
+      [EVENT_SCROLLING_END, accDoc],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.location.hash = "#two";
+    });
+    let [scrollEvent1, scrollEndEvent1] = await onScrolling;
+    scrollEvent1.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent1.maxScrollY >= scrollEvent1.scrollY,
+      "scrollY is within max"
+    );
+    scrollEndEvent1.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent1.maxScrollY >= scrollEndEvent1.scrollY,
+      "scrollY is within max"
+    );
+
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, accDoc],
+      [EVENT_SCROLLING_END, accDoc],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.location.hash = "#three";
+    });
+    let [scrollEvent2, scrollEndEvent2] = await onScrolling;
+    scrollEvent2.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent2.scrollY > scrollEvent1.scrollY,
+      `${scrollEvent2.scrollY} > ${scrollEvent1.scrollY}`
+    );
+    scrollEndEvent2.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent2.maxScrollY >= scrollEndEvent2.scrollY,
+      "scrollY is within max"
+    );
+
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, accDoc],
+      [EVENT_SCROLLING_END, accDoc],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.scrollTo(10, 0);
+    });
+    let [scrollEvent3, scrollEndEvent3] = await onScrolling;
+    scrollEvent3.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent3.maxScrollX >= scrollEvent3.scrollX,
+      "scrollX is within max"
+    );
+    scrollEndEvent3.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent3.maxScrollX >= scrollEndEvent3.scrollX,
+      "scrollY is within max"
+    );
+    ok(
+      scrollEvent3.scrollX > scrollEvent2.scrollX,
+      `${scrollEvent3.scrollX} > ${scrollEvent2.scrollX}`
+    );
+
+    // non-doc scrolling
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, "three"],
+      [EVENT_SCROLLING_END, "three"],
+    ]);
+    await SpecialPowers.spawn(browser, [], () => {
+      content.document.querySelector("#three").scrollTo(0, 10);
+    });
+    let [scrollEvent4, scrollEndEvent4] = await onScrolling;
+    scrollEvent4.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEvent4.maxScrollY >= scrollEvent4.scrollY,
+      "scrollY is within max"
+    );
+    scrollEndEvent4.QueryInterface(nsIAccessibleScrollingEvent);
+    ok(
+      scrollEndEvent4.maxScrollY >= scrollEndEvent4.scrollY,
+      "scrollY is within max"
+    );
+
+    // textarea scrolling
+    info("Moving textarea caret to c");
+    onScrolling = waitForEvents([
+      [EVENT_SCROLLING, "textarea"],
+      [EVENT_SCROLLING_END, "textarea"],
+    ]);
+    await invokeContentTask(browser, [], () => {
+      const textareaDom = content.document.getElementById("textarea");
+      textareaDom.focus();
+      textareaDom.selectionStart = 4;
+    });
+    await onScrolling;
+  }
+);
diff --git a/accessible/tests/browser/events/browser_test_selection_urlbar.js b/accessible/tests/browser/events/browser_test_selection_urlbar.js
new file mode 100644
index 0000000000..8f8fdb92f7
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_selection_urlbar.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+ChromeUtils.defineESModuleGetters(this, {
+  UrlbarTestUtils: "resource://testing-common/UrlbarTestUtils.sys.mjs",
+});
+
+// Check that the URL bar manages accessibility
+// selection notifications appropriately on startup (new window).
+async function runTests() {
+  let focused = waitForEvent(
+    EVENT_FOCUS,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+  info("Creating new window");
+  let newWin = await BrowserTestUtils.openNewBrowserWindow();
+  let bookmark = await PlacesUtils.bookmarks.insert({
+    parentGuid: PlacesUtils.bookmarks.toolbarGuid,
+    title: "addons",
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    url: Services.io.newURI("http://www.addons.mozilla.org/"),
+  });
+
+  registerCleanupFunction(async function () {
+    await BrowserTestUtils.closeWindow(newWin);
+    await PlacesUtils.bookmarks.remove(bookmark);
+  });
+  info("Focusing window");
+  newWin.focus();
+  await focused;
+
+  // Ensure the URL bar is ready for a new URL to be typed.
+  // Sometimes, when this test runs, the existing text isn't selected when the
+  // URL bar is focused. Pressing escape twice ensures that the popup is
+  // closed and that the existing text is selected.
+  EventUtils.synthesizeKey("KEY_Escape", {}, newWin);
+  EventUtils.synthesizeKey("KEY_Escape", {}, newWin);
+  let caretMoved = waitForEvent(
+    EVENT_TEXT_CARET_MOVED,
+    event => event.accessible.role == ROLE_ENTRY
+  );
+
+  info("Autofilling after typing `a` in new window URL bar.");
+  EventUtils.synthesizeKey("a", {}, newWin);
+  await UrlbarTestUtils.promiseSearchComplete(newWin);
+  Assert.equal(
+    newWin.gURLBar.inputField.value,
+    "addons.mozilla.org/",
+    "autofilled value as expected"
+  );
+
+  info("Ensuring caret moved on text selection");
+  await caretMoved;
+}
+
+addAccessibleTask(``, runTests);
diff --git a/accessible/tests/browser/events/browser_test_textcaret.js b/accessible/tests/browser/events/browser_test_textcaret.js
new file mode 100644
index 0000000000..d5065c81f3
--- /dev/null
+++ b/accessible/tests/browser/events/browser_test_textcaret.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Caret move events checker.
+ */
+function caretMoveChecker(target, caretOffset) {
+  return function (event) {
+    let cmEvent = event.QueryInterface(nsIAccessibleCaretMoveEvent);
+    return (
+      cmEvent.accessible == getAccessible(target) &&
+      cmEvent.caretOffset == caretOffset
+    );
+  };
+}
+
+async function checkURLBarCaretEvents() {
+  const kURL = "about:mozilla";
+  let newWin = await BrowserTestUtils.openNewBrowserWindow();
+  BrowserTestUtils.loadURIString(newWin.gBrowser.selectedBrowser, kURL);
+  newWin.gBrowser.selectedBrowser.focus();
+
+  await waitForEvent(EVENT_DOCUMENT_LOAD_COMPLETE, event => {
+    try {
+      return event.accessible.QueryInterface(nsIAccessibleDocument).URL == kURL;
+    } catch (e) {
+      return false;
+    }
+  });
+  info("Loaded " + kURL);
+
+  let urlbarInputEl = newWin.gURLBar.inputField;
+  let urlbarInput = getAccessible(urlbarInputEl, [nsIAccessibleText]);
+
+  let onCaretMove = waitForEvents([
+    [EVENT_TEXT_CARET_MOVED, caretMoveChecker(urlbarInput, kURL.length)],
+    [EVENT_FOCUS, urlbarInput],
+  ]);
+
+  urlbarInput.caretOffset = -1;
+  await onCaretMove;
+  ok(true, "Caret move in URL bar #1");
+
+  onCaretMove = waitForEvent(
+    EVENT_TEXT_CARET_MOVED,
+    caretMoveChecker(urlbarInput, 0)
+  );
+
+  urlbarInput.caretOffset = 0;
+  await onCaretMove;
+  ok(true, "Caret move in URL bar #2");
+
+  await BrowserTestUtils.closeWindow(newWin);
+}
+
+add_task(checkURLBarCaretEvents);
diff --git a/accessible/tests/browser/events/head.js b/accessible/tests/browser/events/head.js
new file mode 100644
index 0000000000..afc50984bd
--- /dev/null
+++ b/accessible/tests/browser/events/head.js
@@ -0,0 +1,18 @@
+/* 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/. */
+
+"use strict";
+
+// Load the shared-head file first.
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js",
+  this
+);
+
+// Loading and common.js from accessible/tests/mochitest/ for all tests, as
+// well as promisified-events.js.
+loadScripts(
+  { name: "common.js", dir: MOCHITESTS_DIR },
+  { name: "promisified-events.js", dir: MOCHITESTS_DIR }
+);