From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 21:33:14 +0200
Subject: Adding upstream version 115.7.0esr.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 browser/base/content/test/contextMenu/browser.ini  |   91 +
 .../content/test/contextMenu/browser_bug1798178.js |   89 +
 .../test/contextMenu/browser_contextmenu.js        | 1943 ++++++++++++++++++++
 .../contextMenu/browser_contextmenu_badiframe.js   |  182 ++
 .../browser_contextmenu_contenteditable.js         |  118 ++
 .../test/contextMenu/browser_contextmenu_iframe.js |   73 +
 .../test/contextMenu/browser_contextmenu_input.js  |  387 ++++
 .../contextMenu/browser_contextmenu_inspect.js     |   61 +
 .../contextMenu/browser_contextmenu_keyword.js     |  198 ++
 .../contextMenu/browser_contextmenu_linkopen.js    |  109 ++
 .../browser_contextmenu_loadblobinnewtab.html      |   56 +
 .../browser_contextmenu_loadblobinnewtab.js        |  186 ++
 .../browser_contextmenu_save_blocked.js            |   78 +
 .../browser_contextmenu_share_macosx.js            |  144 ++
 .../contextMenu/browser_contextmenu_share_win.js   |   77 +
 .../contextMenu/browser_contextmenu_shareurl.html  |    2 +
 .../contextMenu/browser_contextmenu_spellcheck.js  |  334 ++++
 .../test/contextMenu/browser_contextmenu_touch.js  |   94 +
 .../test/contextMenu/browser_copy_image_link.js    |   40 +
 .../contextMenu/browser_strip_on_share_link.js     |  151 ++
 .../test/contextMenu/browser_utilityOverlay.js     |   78 +
 .../contextMenu/browser_utilityOverlayPrincipal.js |   72 +
 .../content/test/contextMenu/browser_view_image.js |  197 ++
 .../base/content/test/contextMenu/bug1798178.sjs   |    9 +
 .../content/test/contextMenu/contextmenu_common.js |  437 +++++
 .../content/test/contextMenu/ctxmenu-image.png     |  Bin 0 -> 5401 bytes
 browser/base/content/test/contextMenu/doggy.png    |  Bin 0 -> 46876 bytes
 .../content/test/contextMenu/file_bug1798178.html  |    5 +
 browser/base/content/test/contextMenu/firebird.png |  Bin 0 -> 16179 bytes
 .../content/test/contextMenu/firebird.png^headers^ |    2 +
 .../test/contextMenu/subtst_contextmenu.html       |   61 +
 .../test/contextMenu/subtst_contextmenu_input.html |   30 +
 .../contextMenu/subtst_contextmenu_keyword.html    |   17 +
 .../contextMenu/subtst_contextmenu_webext.html     |   12 +
 .../test/contextMenu/subtst_contextmenu_xul.xhtml  |    9 +
 .../test/contextMenu/test_contextmenu_iframe.html  |   11 +
 .../test/contextMenu/test_contextmenu_links.html   |   14 +
 .../contextMenu/test_view_image_inline_svg.html    |   15 +
 .../test_view_image_revoked_cached_blob.html       |   40 +
 39 files changed, 5422 insertions(+)
 create mode 100644 browser/base/content/test/contextMenu/browser.ini
 create mode 100644 browser/base/content/test/contextMenu/browser_bug1798178.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_badiframe.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_contenteditable.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_iframe.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_input.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_inspect.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_keyword.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_linkopen.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.html
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_save_blocked.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_share_macosx.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_share_win.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_shareurl.html
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_spellcheck.js
 create mode 100644 browser/base/content/test/contextMenu/browser_contextmenu_touch.js
 create mode 100644 browser/base/content/test/contextMenu/browser_copy_image_link.js
 create mode 100644 browser/base/content/test/contextMenu/browser_strip_on_share_link.js
 create mode 100644 browser/base/content/test/contextMenu/browser_utilityOverlay.js
 create mode 100644 browser/base/content/test/contextMenu/browser_utilityOverlayPrincipal.js
 create mode 100644 browser/base/content/test/contextMenu/browser_view_image.js
 create mode 100644 browser/base/content/test/contextMenu/bug1798178.sjs
 create mode 100644 browser/base/content/test/contextMenu/contextmenu_common.js
 create mode 100644 browser/base/content/test/contextMenu/ctxmenu-image.png
 create mode 100644 browser/base/content/test/contextMenu/doggy.png
 create mode 100644 browser/base/content/test/contextMenu/file_bug1798178.html
 create mode 100644 browser/base/content/test/contextMenu/firebird.png
 create mode 100644 browser/base/content/test/contextMenu/firebird.png^headers^
 create mode 100644 browser/base/content/test/contextMenu/subtst_contextmenu.html
 create mode 100644 browser/base/content/test/contextMenu/subtst_contextmenu_input.html
 create mode 100644 browser/base/content/test/contextMenu/subtst_contextmenu_keyword.html
 create mode 100644 browser/base/content/test/contextMenu/subtst_contextmenu_webext.html
 create mode 100644 browser/base/content/test/contextMenu/subtst_contextmenu_xul.xhtml
 create mode 100644 browser/base/content/test/contextMenu/test_contextmenu_iframe.html
 create mode 100644 browser/base/content/test/contextMenu/test_contextmenu_links.html
 create mode 100644 browser/base/content/test/contextMenu/test_view_image_inline_svg.html
 create mode 100644 browser/base/content/test/contextMenu/test_view_image_revoked_cached_blob.html

(limited to 'browser/base/content/test/contextMenu')

diff --git a/browser/base/content/test/contextMenu/browser.ini b/browser/base/content/test/contextMenu/browser.ini
new file mode 100644
index 0000000000..df0a013059
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser.ini
@@ -0,0 +1,91 @@
+[DEFAULT]
+support-files =
+  subtst_contextmenu_webext.html
+  test_contextmenu_links.html
+  subtst_contextmenu.html
+  subtst_contextmenu_input.html
+  subtst_contextmenu_keyword.html
+  subtst_contextmenu_xul.xhtml
+  ctxmenu-image.png
+  ../general/head.js
+  ../general/video.ogg
+  ../general/audio.ogg
+  ../../../../../toolkit/components/pdfjs/test/file_pdfjs_test.pdf
+  contextmenu_common.js
+  file_bug1798178.html
+  bug1798178.sjs
+
+[browser_bug1798178.js]
+[browser_contextmenu.js]
+tags = fullscreen
+skip-if =
+  os == "linux"
+  verify
+[browser_contextmenu_badiframe.js]
+https_first_disabled = true
+skip-if =
+  os == "win" # Bug 1719856
+  os == "linux" && socketprocess_networking
+[browser_contextmenu_contenteditable.js]
+[browser_contextmenu_iframe.js]
+support-files =
+  test_contextmenu_iframe.html
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_contextmenu_input.js]
+skip-if =
+  os == "linux"
+[browser_contextmenu_inspect.js]
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_contextmenu_keyword.js]
+skip-if =
+  os == "linux" # disabled on Linux due to bug 513558
+[browser_contextmenu_linkopen.js]
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_contextmenu_loadblobinnewtab.js]
+support-files = browser_contextmenu_loadblobinnewtab.html
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_contextmenu_save_blocked.js]
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_contextmenu_share_macosx.js]
+support-files =
+  browser_contextmenu_shareurl.html
+run-if =
+  os == "mac"
+[browser_contextmenu_share_win.js]
+https_first_disabled = true
+support-files =
+  browser_contextmenu_shareurl.html
+run-if =
+  os == "win"
+[browser_contextmenu_spellcheck.js]
+https_first_disabled = true
+skip-if =
+  os == "linux"
+  debug # bug 1798233 - this trips assertions that seem harmless in opt and unlikely to occur in practical use.
+[browser_contextmenu_touch.js]
+skip-if = true # Bug 1424433, disable due to very high frequency failure rate also on Windows 10
+[browser_copy_image_link.js]
+support-files =
+  doggy.png
+  firebird.png
+  firebird.png^headers^
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_strip_on_share_link.js]
+[browser_utilityOverlay.js]
+https_first_disabled = true
+skip-if =
+  os == "linux" && socketprocess_networking
+[browser_utilityOverlayPrincipal.js]
+https_first_disabled = true
+[browser_view_image.js]
+support-files =
+  test_view_image_revoked_cached_blob.html
+  test_view_image_inline_svg.html
+skip-if =
+  os == "linux" && socketprocess_networking
diff --git a/browser/base/content/test/contextMenu/browser_bug1798178.js b/browser/base/content/test/contextMenu/browser_bug1798178.js
new file mode 100644
index 0000000000..529665a6f9
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_bug1798178.js
@@ -0,0 +1,89 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+Services.scriptloader.loadSubScript(
+  "chrome://mochitests/content/browser/toolkit/content/tests/browser/common/mockTransfer.js",
+  this
+);
+
+const TEST_URL =
+  getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content",
+    "https://example.com"
+  ) + "file_bug1798178.html";
+
+let MockFilePicker = SpecialPowers.MockFilePicker;
+MockFilePicker.init(window);
+
+function createTemporarySaveDirectory() {
+  let saveDir = Services.dirsvc.get("TmpD", Ci.nsIFile);
+  saveDir.append("testsavedir");
+  if (!saveDir.exists()) {
+    info("create testsavedir!");
+    saveDir.create(Ci.nsIFile.DIRECTORY_TYPE, 0o755);
+  }
+  info("return from createTempSaveDir: " + saveDir.path);
+  return saveDir;
+}
+
+add_task(async function test_save_link_cross_origin() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["browser.opaqueResponseBlocking", true]],
+  });
+  await BrowserTestUtils.withNewTab(TEST_URL, async browser => {
+    let menu = document.getElementById("contentAreaContextMenu");
+    let popupShown = BrowserTestUtils.waitForEvent(menu, "popupshown");
+    BrowserTestUtils.synthesizeMouseAtCenter(
+      "a[href]",
+      { type: "contextmenu", button: 2 },
+      browser
+    );
+    await popupShown;
+
+    let filePickerShow = new Promise(r => {
+      MockFilePicker.showCallback = function (fp) {
+        ok(true, "filepicker should be shown");
+        info("MockFilePicker showCallback");
+
+        let fileName = fp.defaultString;
+        destFile = tempDir.clone();
+        destFile.append(fileName);
+
+        MockFilePicker.setFiles([destFile]);
+        MockFilePicker.filterIndex = 1; // kSaveAsType_URL
+
+        info("MockFilePicker showCallback done");
+        r();
+      };
+    });
+
+    info("Let's create a temporary dir");
+    let tempDir = createTemporarySaveDirectory();
+    let destFile;
+
+    MockFilePicker.displayDirectory = tempDir;
+
+    let transferCompletePromise = new Promise(resolve => {
+      function onTransferComplete(downloadSuccess) {
+        ok(downloadSuccess, "File should have been downloaded successfully");
+        resolve();
+      }
+      mockTransferCallback = onTransferComplete;
+      mockTransferRegisterer.register();
+    });
+
+    let saveLinkCommand = document.getElementById("context-savelink");
+    info("saveLinkCommand: " + saveLinkCommand);
+    saveLinkCommand.doCommand();
+
+    await filePickerShow;
+
+    let popupHiddenPromise = BrowserTestUtils.waitForEvent(menu, "popuphidden");
+    menu.hidePopup();
+    await popupHiddenPromise;
+
+    await transferCompletePromise;
+  });
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu.js b/browser/base/content/test/contextMenu/browser_contextmenu.js
new file mode 100644
index 0000000000..03a848f26d
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu.js
@@ -0,0 +1,1943 @@
+"use strict";
+
+let contextMenu;
+let LOGIN_FILL_ITEMS = ["---", null, "manage-saved-logins", true];
+let NAVIGATION_ITEMS =
+  AppConstants.platform == "macosx"
+    ? [
+        "context-back",
+        false,
+        "context-forward",
+        false,
+        "context-reload",
+        true,
+        "---",
+        null,
+        "context-bookmarkpage",
+        true,
+      ]
+    : [
+        "context-navigation",
+        null,
+        [
+          "context-back",
+          false,
+          "context-forward",
+          false,
+          "context-reload",
+          true,
+          "context-bookmarkpage",
+          true,
+        ],
+        null,
+        "---",
+        null,
+      ];
+let hasPocket = Services.prefs.getBoolPref("extensions.pocket.enabled");
+let hasContainers =
+  Services.prefs.getBoolPref("privacy.userContext.enabled") &&
+  ContextualIdentityService.getPublicIdentities().length;
+
+const example_base =
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com/browser/browser/base/content/test/contextMenu/";
+const chrome_base =
+  "chrome://mochitests/content/browser/browser/base/content/test/contextMenu/";
+const head_base =
+  "chrome://mochitests/content/browser/browser/base/content/test/contextMenu/";
+
+/* import-globals-from contextmenu_common.js */
+Services.scriptloader.loadSubScript(
+  chrome_base + "contextmenu_common.js",
+  this
+);
+
+function getThisFrameSubMenu(base_menu) {
+  if (AppConstants.NIGHTLY_BUILD) {
+    let osPidItem = ["context-frameOsPid", false];
+    base_menu = base_menu.concat(osPidItem);
+  }
+  return base_menu;
+}
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.search.separatePrivateDefault.ui.enabled", true],
+      ["extensions.screenshots.disabled", false],
+      ["layout.forms.reveal-password-context-menu.enabled", true],
+    ],
+  });
+});
+
+// Below are test cases for XUL element
+add_task(async function test_xul_text_link_label() {
+  let url = chrome_base + "subtst_contextmenu_xul.xhtml";
+
+  await BrowserTestUtils.openNewForegroundTab({
+    gBrowser,
+    url,
+    waitForLoad: true,
+    waitForStateStop: true,
+  });
+
+  await test_contextmenu("#test-xul-text-link-label", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+
+  // Clean up so won't affect HTML element test cases.
+  lastElementSelector = null;
+  gBrowser.removeCurrentTab();
+});
+
+// Below are test cases for HTML element.
+
+add_task(async function test_setup_html() {
+  let url = example_base + "subtst_contextmenu.html";
+
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+
+  await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function () {
+    let doc = content.document;
+    let audioIframe = doc.querySelector("#test-audio-in-iframe");
+    // media documents always use a <video> tag.
+    let audio = audioIframe.contentDocument.querySelector("video");
+    let videoIframe = doc.querySelector("#test-video-in-iframe");
+    let video = videoIframe.contentDocument.querySelector("video");
+
+    audio.loop = true;
+    audio.src = "audio.ogg";
+    video.loop = true;
+    video.src = "video.ogg";
+
+    let awaitPause = ContentTaskUtils.waitForEvent(audio, "pause");
+    await ContentTaskUtils.waitForCondition(
+      () => !audio.paused,
+      "Making sure audio is playing before calling pause"
+    );
+    audio.pause();
+    await awaitPause;
+
+    awaitPause = ContentTaskUtils.waitForEvent(video, "pause");
+    await ContentTaskUtils.waitForCondition(
+      () => !video.paused,
+      "Making sure video is playing before calling pause"
+    );
+    video.pause();
+    await awaitPause;
+  });
+});
+
+let plainTextItems;
+add_task(async function test_plaintext() {
+  await test_contextmenu("#test-text", [
+    ...NAVIGATION_ITEMS,
+    "context-savepage",
+    true,
+    ...(hasPocket ? ["context-pocket", true] : []),
+    "context-selectall",
+    true,
+    "---",
+    null,
+    "context-take-screenshot",
+    true,
+    "---",
+    null,
+    "context-viewsource",
+    true,
+  ]);
+});
+
+const kLinkItems = [
+  "context-openlinkintab",
+  true,
+  ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+  // We need a blank entry here because the containers submenu is
+  // dynamically generated with no ids.
+  ...(hasContainers ? ["", null] : []),
+  "context-openlink",
+  true,
+  "context-openlinkprivate",
+  true,
+  "---",
+  null,
+  "context-bookmarklink",
+  true,
+  "context-savelink",
+  true,
+  ...(hasPocket ? ["context-savelinktopocket", true] : []),
+  "context-copylink",
+  true,
+  "---",
+  null,
+  "context-searchselect",
+  true,
+  "context-searchselect-private",
+  true,
+];
+
+add_task(async function test_link() {
+  await test_contextmenu("#test-link", kLinkItems);
+});
+
+add_task(async function test_link_in_shadow_dom() {
+  await test_contextmenu("#shadow-host", kLinkItems, {
+    offsetX: 6,
+    offsetY: 6,
+  });
+});
+
+add_task(async function test_link_over_shadow_dom() {
+  await test_contextmenu("#shadow-host-in-link", kLinkItems, {
+    offsetX: 6,
+    offsetY: 6,
+  });
+});
+
+add_task(async function test_mailto() {
+  await test_contextmenu("#test-mailto", [
+    "context-copyemail",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+});
+
+add_task(async function test_tel() {
+  await test_contextmenu("#test-tel", [
+    "context-copyphone",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+});
+
+add_task(async function test_image() {
+  for (let selector of ["#test-image", "#test-svg-image"]) {
+    await test_contextmenu(
+      selector,
+      [
+        "context-viewimage",
+        true,
+        "context-saveimage",
+        true,
+        "context-copyimage-contents",
+        true,
+        "context-copyimage",
+        true,
+        "context-sendimage",
+        true,
+        ...getTextRecognitionItems(),
+        ...(Services.prefs.getBoolPref("browser.menu.showViewImageInfo", false)
+          ? ["context-viewimageinfo", true]
+          : []),
+        "---",
+        null,
+        "context-setDesktopBackground",
+        true,
+      ],
+      {
+        onContextMenuShown() {
+          is(
+            typeof gContextMenu.imageInfo.height,
+            "number",
+            "Should have height"
+          );
+          is(
+            typeof gContextMenu.imageInfo.width,
+            "number",
+            "Should have width"
+          );
+        },
+      }
+    );
+  }
+});
+
+add_task(async function test_canvas() {
+  await test_contextmenu("#test-canvas", [
+    "context-viewimage",
+    true,
+    "context-saveimage",
+    true,
+    "---",
+    null,
+    "context-selectall",
+    true,
+    "---",
+    null,
+    "context-take-screenshot",
+    true,
+  ]);
+});
+
+add_task(async function test_video_ok() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", true]],
+  });
+
+  await test_contextmenu("#test-video-ok", [
+    "context-media-play",
+    true,
+    "context-media-mute",
+    true,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      true,
+      "context-media-playbackrate-100x",
+      true,
+      "context-media-playbackrate-125x",
+      true,
+      "context-media-playbackrate-150x",
+      true,
+      "context-media-playbackrate-200x",
+      true,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    true,
+    "context-media-hidecontrols",
+    true,
+    "---",
+    null,
+    "context-viewvideo",
+    true,
+    "context-video-pictureinpicture",
+    true,
+    "---",
+    null,
+    "context-video-saveimage",
+    true,
+    "context-savevideo",
+    true,
+    "context-copyvideourl",
+    true,
+    "context-sendvideo",
+    true,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", false]],
+  });
+
+  await test_contextmenu("#test-video-ok", [
+    "context-media-play",
+    true,
+    "context-media-mute",
+    true,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      true,
+      "context-media-playbackrate-100x",
+      true,
+      "context-media-playbackrate-125x",
+      true,
+      "context-media-playbackrate-150x",
+      true,
+      "context-media-playbackrate-200x",
+      true,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    true,
+    "context-media-hidecontrols",
+    true,
+    "---",
+    null,
+    "context-viewvideo",
+    true,
+    "---",
+    null,
+    "context-video-saveimage",
+    true,
+    "context-savevideo",
+    true,
+    "context-copyvideourl",
+    true,
+    "context-sendvideo",
+    true,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function test_audio_in_video() {
+  await test_contextmenu("#test-audio-in-video", [
+    "context-media-play",
+    true,
+    "context-media-mute",
+    true,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      true,
+      "context-media-playbackrate-100x",
+      true,
+      "context-media-playbackrate-125x",
+      true,
+      "context-media-playbackrate-150x",
+      true,
+      "context-media-playbackrate-200x",
+      true,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-media-showcontrols",
+    true,
+    "---",
+    null,
+    "context-saveaudio",
+    true,
+    "context-copyaudiourl",
+    true,
+    "context-sendaudio",
+    true,
+  ]);
+});
+
+add_task(async function test_video_bad() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", true]],
+  });
+
+  await test_contextmenu("#test-video-bad", [
+    "context-media-play",
+    false,
+    "context-media-mute",
+    false,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      false,
+      "context-media-playbackrate-100x",
+      false,
+      "context-media-playbackrate-125x",
+      false,
+      "context-media-playbackrate-150x",
+      false,
+      "context-media-playbackrate-200x",
+      false,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    false,
+    "context-media-hidecontrols",
+    false,
+    "---",
+    null,
+    "context-viewvideo",
+    true,
+    "---",
+    null,
+    "context-video-saveimage",
+    false,
+    "context-savevideo",
+    true,
+    "context-copyvideourl",
+    true,
+    "context-sendvideo",
+    true,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", false]],
+  });
+
+  await test_contextmenu("#test-video-bad", [
+    "context-media-play",
+    false,
+    "context-media-mute",
+    false,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      false,
+      "context-media-playbackrate-100x",
+      false,
+      "context-media-playbackrate-125x",
+      false,
+      "context-media-playbackrate-150x",
+      false,
+      "context-media-playbackrate-200x",
+      false,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    false,
+    "context-media-hidecontrols",
+    false,
+    "---",
+    null,
+    "context-viewvideo",
+    true,
+    "---",
+    null,
+    "context-video-saveimage",
+    false,
+    "context-savevideo",
+    true,
+    "context-copyvideourl",
+    true,
+    "context-sendvideo",
+    true,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function test_video_bad2() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", true]],
+  });
+
+  await test_contextmenu("#test-video-bad2", [
+    "context-media-play",
+    false,
+    "context-media-mute",
+    false,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      false,
+      "context-media-playbackrate-100x",
+      false,
+      "context-media-playbackrate-125x",
+      false,
+      "context-media-playbackrate-150x",
+      false,
+      "context-media-playbackrate-200x",
+      false,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    false,
+    "context-media-hidecontrols",
+    false,
+    "---",
+    null,
+    "context-viewvideo",
+    false,
+    "---",
+    null,
+    "context-video-saveimage",
+    false,
+    "context-savevideo",
+    false,
+    "context-copyvideourl",
+    false,
+    "context-sendvideo",
+    false,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", false]],
+  });
+
+  await test_contextmenu("#test-video-bad2", [
+    "context-media-play",
+    false,
+    "context-media-mute",
+    false,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      false,
+      "context-media-playbackrate-100x",
+      false,
+      "context-media-playbackrate-125x",
+      false,
+      "context-media-playbackrate-150x",
+      false,
+      "context-media-playbackrate-200x",
+      false,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    false,
+    "context-media-hidecontrols",
+    false,
+    "---",
+    null,
+    "context-viewvideo",
+    false,
+    "---",
+    null,
+    "context-video-saveimage",
+    false,
+    "context-savevideo",
+    false,
+    "context-copyvideourl",
+    false,
+    "context-sendvideo",
+    false,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function test_iframe() {
+  await test_contextmenu("#test-iframe", [
+    ...NAVIGATION_ITEMS,
+    "context-savepage",
+    true,
+    ...(hasPocket ? ["context-pocket", true] : []),
+    "context-selectall",
+    true,
+    "---",
+    null,
+    "frame",
+    null,
+    getThisFrameSubMenu([
+      "context-showonlythisframe",
+      true,
+      "context-openframeintab",
+      true,
+      "context-openframe",
+      true,
+      "---",
+      null,
+      "context-reloadframe",
+      true,
+      "---",
+      null,
+      "context-bookmarkframe",
+      true,
+      "context-saveframe",
+      true,
+      "---",
+      null,
+      "context-printframe",
+      true,
+      "---",
+      null,
+      "context-take-frame-screenshot",
+      true,
+      "---",
+      null,
+      "context-viewframesource",
+      true,
+      "context-viewframeinfo",
+      true,
+    ]),
+    null,
+    "---",
+    null,
+    "context-viewsource",
+    true,
+  ]);
+});
+
+add_task(async function test_video_in_iframe() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", true]],
+  });
+
+  await test_contextmenu("#test-video-in-iframe", [
+    "context-media-play",
+    true,
+    "context-media-mute",
+    true,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      true,
+      "context-media-playbackrate-100x",
+      true,
+      "context-media-playbackrate-125x",
+      true,
+      "context-media-playbackrate-150x",
+      true,
+      "context-media-playbackrate-200x",
+      true,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    true,
+    "context-media-hidecontrols",
+    true,
+    "---",
+    null,
+    "context-viewvideo",
+    true,
+    "context-video-pictureinpicture",
+    true,
+    "---",
+    null,
+    "context-video-saveimage",
+    true,
+    "context-savevideo",
+    true,
+    "context-copyvideourl",
+    true,
+    "context-sendvideo",
+    true,
+    "---",
+    null,
+    "frame",
+    null,
+    getThisFrameSubMenu([
+      "context-showonlythisframe",
+      true,
+      "context-openframeintab",
+      true,
+      "context-openframe",
+      true,
+      "---",
+      null,
+      "context-reloadframe",
+      true,
+      "---",
+      null,
+      "context-bookmarkframe",
+      true,
+      "context-saveframe",
+      true,
+      "---",
+      null,
+      "context-printframe",
+      true,
+      "---",
+      null,
+      "context-viewframeinfo",
+      true,
+    ]),
+    null,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.videocontrols.picture-in-picture.enabled", false]],
+  });
+
+  await test_contextmenu("#test-video-in-iframe", [
+    "context-media-play",
+    true,
+    "context-media-mute",
+    true,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      true,
+      "context-media-playbackrate-100x",
+      true,
+      "context-media-playbackrate-125x",
+      true,
+      "context-media-playbackrate-150x",
+      true,
+      "context-media-playbackrate-200x",
+      true,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "context-video-fullscreen",
+    true,
+    "context-media-hidecontrols",
+    true,
+    "---",
+    null,
+    "context-viewvideo",
+    true,
+    "---",
+    null,
+    "context-video-saveimage",
+    true,
+    "context-savevideo",
+    true,
+    "context-copyvideourl",
+    true,
+    "context-sendvideo",
+    true,
+    "---",
+    null,
+    "frame",
+    null,
+    getThisFrameSubMenu([
+      "context-showonlythisframe",
+      true,
+      "context-openframeintab",
+      true,
+      "context-openframe",
+      true,
+      "---",
+      null,
+      "context-reloadframe",
+      true,
+      "---",
+      null,
+      "context-bookmarkframe",
+      true,
+      "context-saveframe",
+      true,
+      "---",
+      null,
+      "context-printframe",
+      true,
+      "---",
+      null,
+      "context-viewframeinfo",
+      true,
+    ]),
+    null,
+  ]);
+
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function test_audio_in_iframe() {
+  await test_contextmenu("#test-audio-in-iframe", [
+    "context-media-play",
+    true,
+    "context-media-mute",
+    true,
+    "context-media-playbackrate",
+    null,
+    [
+      "context-media-playbackrate-050x",
+      true,
+      "context-media-playbackrate-100x",
+      true,
+      "context-media-playbackrate-125x",
+      true,
+      "context-media-playbackrate-150x",
+      true,
+      "context-media-playbackrate-200x",
+      true,
+    ],
+    null,
+    "context-media-loop",
+    true,
+    "---",
+    null,
+    "context-saveaudio",
+    true,
+    "context-copyaudiourl",
+    true,
+    "context-sendaudio",
+    true,
+    "---",
+    null,
+    "frame",
+    null,
+    getThisFrameSubMenu([
+      "context-showonlythisframe",
+      true,
+      "context-openframeintab",
+      true,
+      "context-openframe",
+      true,
+      "---",
+      null,
+      "context-reloadframe",
+      true,
+      "---",
+      null,
+      "context-bookmarkframe",
+      true,
+      "context-saveframe",
+      true,
+      "---",
+      null,
+      "context-printframe",
+      true,
+      "---",
+      null,
+      "context-viewframeinfo",
+      true,
+    ]),
+    null,
+  ]);
+});
+
+add_task(async function test_image_in_iframe() {
+  await test_contextmenu("#test-image-in-iframe", [
+    "context-viewimage",
+    true,
+    "context-saveimage",
+    true,
+    "context-copyimage-contents",
+    true,
+    "context-copyimage",
+    true,
+    "context-sendimage",
+    true,
+    ...getTextRecognitionItems(),
+    ...(Services.prefs.getBoolPref("browser.menu.showViewImageInfo", false)
+      ? ["context-viewimageinfo", true]
+      : []),
+    "---",
+    null,
+    "context-setDesktopBackground",
+    true,
+    "---",
+    null,
+    "frame",
+    null,
+    getThisFrameSubMenu([
+      "context-showonlythisframe",
+      true,
+      "context-openframeintab",
+      true,
+      "context-openframe",
+      true,
+      "---",
+      null,
+      "context-reloadframe",
+      true,
+      "---",
+      null,
+      "context-bookmarkframe",
+      true,
+      "context-saveframe",
+      true,
+      "---",
+      null,
+      "context-printframe",
+      true,
+      "---",
+      null,
+      "context-viewframeinfo",
+      true,
+    ]),
+    null,
+  ]);
+});
+
+add_task(async function test_pdf_viewer_in_iframe() {
+  await test_contextmenu(
+    "#test-pdf-viewer-in-frame",
+    [
+      ...NAVIGATION_ITEMS,
+      "context-savepage",
+      true,
+      ...(hasPocket ? ["context-pocket", true] : []),
+      "context-selectall",
+      true,
+      "---",
+      null,
+      "frame",
+      null,
+      getThisFrameSubMenu([
+        "context-showonlythisframe",
+        true,
+        "context-openframeintab",
+        true,
+        "context-openframe",
+        true,
+        "---",
+        null,
+        "context-reloadframe",
+        true,
+        "---",
+        null,
+        "context-bookmarkframe",
+        true,
+        "context-saveframe",
+        true,
+        "---",
+        null,
+        "context-printframe",
+        true,
+        "---",
+        null,
+        "context-take-frame-screenshot",
+        true,
+        "---",
+        null,
+        "context-viewframeinfo",
+        true,
+      ]),
+      null,
+      "---",
+      null,
+      "context-viewsource",
+      true,
+    ],
+    {
+      shiftkey: true,
+    }
+  );
+});
+
+add_task(async function test_textarea() {
+  // Disabled since this is seeing spell-check-enabled
+  // instead of spell-add-dictionaries-main
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-textarea",
+    ["context-undo",                false,
+     "context-redo",                false,
+     "---",                         null,
+     "context-cut",                 true,
+     "context-copy",                true,
+     "context-paste",               null,
+     "context-delete",              false,
+     "---",                         null,
+     "context-selectall",           true,
+     "---",                         null,
+     "spell-add-dictionaries-main", true,
+    ],
+    {
+      skipFocusChange: true,
+    }
+  );
+  */
+});
+
+add_task(async function test_textarea_spellcheck() {
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-textarea",
+    ["*chubbiness",         true, // spelling suggestion
+     "spell-add-to-dictionary", true,
+     "---",                 null,
+     "context-undo",        false,
+     "context-redo",        false,
+     "---",                 null,
+     "context-cut",         true,
+     "context-copy",        true,
+     "context-paste",       null, // ignore clipboard state
+     "context-delete",      false,
+     "---",                 null,
+     "context-selectall",   true,
+     "---",                 null,
+     "spell-check-enabled", true,
+     "spell-dictionaries",  true,
+         ["spell-check-dictionary-en-US", true,
+          "---",                          null,
+          "spell-add-dictionaries",       true], null
+    ],
+    {
+      waitForSpellCheck: true,
+      offsetX: 6,
+      offsetY: 6,
+      postCheckContextMenuFn() {
+        document.getElementById("spell-add-to-dictionary").doCommand();
+      }
+    }
+  );
+  */
+});
+
+add_task(async function test_plaintext2() {
+  await test_contextmenu("#test-text", plainTextItems);
+});
+
+add_task(async function test_undo_add_to_dictionary() {
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-textarea",
+    ["spell-undo-add-to-dictionary", true,
+     "---",                 null,
+     "context-undo",        false,
+     "context-redo",        false,
+     "---",                 null,
+     "context-cut",         true,
+     "context-copy",        true,
+     "context-paste",       null, // ignore clipboard state
+     "context-delete",      false,
+     "context-selectall",   true,
+     "---",                 null,
+     "spell-check-enabled", true,
+     "spell-dictionaries",  true,
+         ["spell-check-dictionary-en-US", true,
+          "---",                          null,
+          "spell-add-dictionaries",       true], null
+    ],
+    {
+      waitForSpellCheck: true,
+      postCheckContextMenuFn() {
+        document.getElementById("spell-undo-add-to-dictionary")
+                .doCommand();
+      }
+    }
+  );
+  */
+});
+
+add_task(async function test_contenteditable() {
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-contenteditable",
+    ["spell-no-suggestions", false,
+     "spell-add-to-dictionary", true,
+     "---",                 null,
+     "context-undo",        false,
+     "context-redo",        false,
+     "---",                 null,
+     "context-cut",         true,
+     "context-copy",        true,
+     "context-paste",       null, // ignore clipboard state
+     "context-delete",      false,
+     "context-selectall",   true,
+     "---",                 null,
+     "spell-check-enabled", true,
+     "spell-dictionaries",  true,
+         ["spell-check-dictionary-en-US", true,
+          "---",                          null,
+          "spell-add-dictionaries",       true], null
+    ],
+    {waitForSpellCheck: true}
+  );
+  */
+});
+
+add_task(async function test_copylinkcommand() {
+  await test_contextmenu("#test-link", null, {
+    async postCheckContextMenuFn() {
+      document.commandDispatcher
+        .getControllerForCommand("cmd_copyLink")
+        .doCommand("cmd_copyLink");
+
+      // The easiest way to check the clipboard is to paste the contents
+      // into a textbox.
+      await SpecialPowers.spawn(
+        gBrowser.selectedBrowser,
+        [],
+        async function () {
+          let doc = content.document;
+          let input = doc.getElementById("test-input");
+          input.focus();
+          input.value = "";
+        }
+      );
+      document.commandDispatcher
+        .getControllerForCommand("cmd_paste")
+        .doCommand("cmd_paste");
+      await SpecialPowers.spawn(
+        gBrowser.selectedBrowser,
+        [],
+        async function () {
+          let doc = content.document;
+          let input = doc.getElementById("test-input");
+          Assert.equal(
+            input.value,
+            // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+            "http://mozilla.com/",
+            "paste for command cmd_paste"
+          );
+          // Don't keep focus, because that may affect clipboard commands in
+          // subsequently-opened menus.
+          input.blur();
+        }
+      );
+    },
+  });
+});
+
+add_task(async function test_dom_full_screen() {
+  let fullscreenItems = NAVIGATION_ITEMS.concat([
+    "context-leave-dom-fullscreen",
+    true,
+    "---",
+    null,
+    "context-savepage",
+    true,
+    ...(hasPocket ? ["context-pocket", true] : []),
+    "context-selectall",
+    true,
+    "---",
+    null,
+    "context-take-screenshot",
+    true,
+    "---",
+    null,
+    "context-viewsource",
+    true,
+  ]);
+  if (AppConstants.platform == "macosx") {
+    // Put the bookmarks item next to save page:
+    const bmPageIndex = fullscreenItems.indexOf("context-bookmarkpage");
+    let bmPageItems = fullscreenItems.splice(bmPageIndex, 2);
+    fullscreenItems.splice(
+      fullscreenItems.indexOf("context-savepage"),
+      0,
+      ...bmPageItems
+    );
+  }
+  await test_contextmenu("#test-dom-full-screen", fullscreenItems, {
+    shiftkey: true,
+    async preCheckContextMenuFn() {
+      await SpecialPowers.pushPrefEnv({
+        set: [
+          ["full-screen-api.allow-trusted-requests-only", false],
+          ["full-screen-api.transition-duration.enter", "0 0"],
+          ["full-screen-api.transition-duration.leave", "0 0"],
+        ],
+      });
+      await SpecialPowers.spawn(
+        gBrowser.selectedBrowser,
+        [],
+        async function () {
+          let doc = content.document;
+          let win = doc.defaultView;
+          let full_screen_element = doc.getElementById("test-dom-full-screen");
+          let awaitFullScreenChange = ContentTaskUtils.waitForEvent(
+            win,
+            "fullscreenchange"
+          );
+          full_screen_element.requestFullscreen();
+          await awaitFullScreenChange;
+        }
+      );
+    },
+    async postCheckContextMenuFn() {
+      await SpecialPowers.spawn(
+        gBrowser.selectedBrowser,
+        [],
+        async function () {
+          let win = content.document.defaultView;
+          let awaitFullScreenChange = ContentTaskUtils.waitForEvent(
+            win,
+            "fullscreenchange"
+          );
+          content.document.exitFullscreen();
+          await awaitFullScreenChange;
+        }
+      );
+    },
+  });
+});
+
+add_task(async function test_pagemenu2() {
+  await test_contextmenu(
+    "#test-text",
+    [
+      ...NAVIGATION_ITEMS,
+      "context-savepage",
+      true,
+      ...(hasPocket ? ["context-pocket", true] : []),
+      "context-selectall",
+      true,
+      "---",
+      null,
+      "context-take-screenshot",
+      true,
+      "---",
+      null,
+      "context-viewsource",
+      true,
+    ],
+    { shiftkey: true }
+  );
+});
+
+add_task(async function test_select_text() {
+  await test_contextmenu(
+    "#test-select-text",
+    [
+      "context-copy",
+      true,
+      "context-selectall",
+      true,
+      "context-print-selection",
+      true,
+      "---",
+      null,
+      "context-take-screenshot",
+      true,
+      "---",
+      null,
+      "context-searchselect",
+      true,
+      "context-searchselect-private",
+      true,
+      "---",
+      null,
+      "context-viewpartialsource-selection",
+      true,
+    ],
+    {
+      offsetX: 6,
+      offsetY: 6,
+      async preCheckContextMenuFn() {
+        await selectText("#test-select-text");
+      },
+    }
+  );
+});
+
+add_task(async function test_select_text_search_service_not_initialized() {
+  // Pretend the search service is not initialised.
+  Services.search.wrappedJSObject.forceInitializationStatusForTests(
+    "not initialized"
+  );
+  await test_contextmenu(
+    "#test-select-text",
+    [
+      "context-copy",
+      true,
+      "context-selectall",
+      true,
+      "context-print-selection",
+      true,
+      "---",
+      null,
+      "context-take-screenshot",
+      true,
+      "---",
+      null,
+      "context-viewpartialsource-selection",
+      true,
+    ],
+    {
+      offsetX: 6,
+      offsetY: 6,
+      async preCheckContextMenuFn() {
+        await selectText("#test-select-text");
+      },
+    }
+  );
+
+  // Restore the search service initialization status
+  Services.search.wrappedJSObject.forceInitializationStatusForTests("success");
+});
+
+add_task(async function test_select_text_link() {
+  await test_contextmenu(
+    "#test-select-text-link",
+    [
+      "context-openlinkincurrent",
+      true,
+      "context-openlinkintab",
+      true,
+      ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+      // We need a blank entry here because the containers submenu is
+      // dynamically generated with no ids.
+      ...(hasContainers ? ["", null] : []),
+      "context-openlink",
+      true,
+      "context-openlinkprivate",
+      true,
+      "---",
+      null,
+      "context-bookmarklink",
+      true,
+      "context-savelink",
+      true,
+      "---",
+      null,
+      "context-copy",
+      true,
+      "context-selectall",
+      true,
+      "context-print-selection",
+      true,
+      "---",
+      null,
+      "context-searchselect",
+      true,
+      "context-searchselect-private",
+      true,
+      "---",
+      null,
+      "context-viewpartialsource-selection",
+      true,
+    ],
+    {
+      offsetX: 6,
+      offsetY: 6,
+      async preCheckContextMenuFn() {
+        await selectText("#test-select-text-link");
+      },
+      async postCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let win = content.document.defaultView;
+            win.getSelection().removeAllRanges();
+          }
+        );
+      },
+    }
+  );
+});
+
+add_task(async function test_imagelink() {
+  await test_contextmenu("#test-image-link", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-viewimage",
+    true,
+    "context-saveimage",
+    true,
+    "context-copyimage-contents",
+    true,
+    "context-copyimage",
+    true,
+    "context-sendimage",
+    true,
+    ...getTextRecognitionItems(),
+    ...(Services.prefs.getBoolPref("browser.menu.showViewImageInfo", false)
+      ? ["context-viewimageinfo", true]
+      : []),
+    "---",
+    null,
+    "context-setDesktopBackground",
+    true,
+  ]);
+});
+
+add_task(async function test_select_input_text() {
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-select-input-text",
+    ["context-undo",                 false,
+     "context-redo",                 false,
+     "---",                          null,
+     "context-cut",                  true,
+     "context-copy",                 true,
+     "context-paste",                null, // ignore clipboard state
+     "context-delete",               true,
+     "context-selectall",            true,
+     "---",                          null,
+     "context-searchselect",         true,
+     "context-searchselect-private", true,
+     "---",                          null,
+     "spell-check-enabled",          true
+    ].concat(LOGIN_FILL_ITEMS),
+    {
+      *preCheckContextMenuFn() {
+        yield ContentTask.spawn(gBrowser.selectedBrowser, null, function*() {
+          let doc = content.document;
+          let win = doc.defaultView;
+          win.getSelection().removeAllRanges();
+          let element = doc.querySelector("#test-select-input-text");
+          element.select();
+        });
+      }
+    }
+  );
+  */
+});
+
+add_task(async function test_select_input_text_password() {
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-select-input-text-type-password",
+    ["context-undo",        false,
+     "context-redo",        false,
+     "---",                 null,
+     "context-cut",         true,
+     "context-copy",        true,
+     "context-paste",       null, // ignore clipboard state
+     "context-delete",      true,
+     "context-selectall",   true,
+     "---",                 null,
+     "spell-check-enabled", true,
+     // spell checker is shown on input[type="password"] on this testcase
+     "spell-dictionaries",  true,
+         ["spell-check-dictionary-en-US", true,
+          "---",                          null,
+          "spell-add-dictionaries",       true], null
+    ].concat(LOGIN_FILL_ITEMS),
+    {
+      *preCheckContextMenuFn() {
+        yield ContentTask.spawn(gBrowser.selectedBrowser, null, function*() {
+          let doc = content.document;
+          let win = doc.defaultView;
+          win.getSelection().removeAllRanges();
+          let element = doc.querySelector("#test-select-input-text-type-password");
+          element.select();
+        });
+      },
+      *postCheckContextMenuFn() {
+        yield ContentTask.spawn(gBrowser.selectedBrowser, null, function*() {
+          let win = content.document.defaultView;
+          win.getSelection().removeAllRanges();
+        });
+      }
+    }
+  );
+  */
+});
+
+add_task(async function test_longdesc() {
+  await test_contextmenu("#test-longdesc", [
+    "context-viewimage",
+    true,
+    "context-saveimage",
+    true,
+    "context-copyimage-contents",
+    true,
+    "context-copyimage",
+    true,
+    "context-sendimage",
+    true,
+    ...getTextRecognitionItems(),
+    ...(Services.prefs.getBoolPref("browser.menu.showViewImageInfo", false)
+      ? ["context-viewimageinfo", true]
+      : []),
+    "context-viewimagedesc",
+    true,
+    "---",
+    null,
+    "context-setDesktopBackground",
+    true,
+  ]);
+});
+
+add_task(async function test_srcdoc() {
+  await test_contextmenu("#test-srcdoc", [
+    ...NAVIGATION_ITEMS,
+    "context-savepage",
+    true,
+    ...(hasPocket ? ["context-pocket", true] : []),
+    "context-selectall",
+    true,
+    "---",
+    null,
+    "frame",
+    null,
+    getThisFrameSubMenu([
+      "context-reloadframe",
+      true,
+      "---",
+      null,
+      "context-saveframe",
+      true,
+      "---",
+      null,
+      "context-printframe",
+      true,
+      "---",
+      null,
+      "context-take-frame-screenshot",
+      true,
+      "---",
+      null,
+      "context-viewframesource",
+      true,
+      "context-viewframeinfo",
+      true,
+    ]),
+    null,
+    "---",
+    null,
+    "context-viewsource",
+    true,
+  ]);
+});
+
+add_task(async function test_input_spell_false() {
+  todo(false, "spell checker tests are failing, bug 1246296");
+
+  /*
+  yield test_contextmenu("#test-contenteditable-spellcheck-false",
+    ["context-undo",        false,
+     "context-redo",        false,
+     "---",                 null,
+     "context-cut",         true,
+     "context-copy",        true,
+     "context-paste",       null, // ignore clipboard state
+     "context-delete",      false,
+     "context-selectall",   true,
+    ]
+  );
+  */
+});
+
+add_task(async function test_svg_link() {
+  await test_contextmenu("#svg-with-link > a", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+
+  await test_contextmenu("#svg-with-link2 > a", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+
+  await test_contextmenu("#svg-with-link3 > a", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+});
+
+add_task(async function test_svg_relative_link() {
+  await test_contextmenu("#svg-with-relative-link > a", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+
+  await test_contextmenu("#svg-with-relative-link2 > a", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+
+  await test_contextmenu("#svg-with-relative-link3 > a", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    ...(hasPocket ? ["context-savelinktopocket", true] : []),
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+});
+
+add_task(async function test_background_image() {
+  let bgImageItems = [
+    "context-viewimage",
+    true,
+    "context-copyimage",
+    true,
+    "context-sendimage",
+    true,
+    "---",
+    null,
+    "context-savepage",
+    true,
+    ...(hasPocket ? ["context-pocket", true] : []),
+    "context-selectall",
+    true,
+    "---",
+    null,
+    "context-take-screenshot",
+    true,
+    "---",
+    null,
+    "context-viewsource",
+    true,
+  ];
+  if (AppConstants.platform == "macosx") {
+    // Back/fwd/(stop|reload) and their separator go before the image items,
+    // followed by the bookmark item which goes with save page - so we need
+    // to split up NAVIGATION_ITEMS and bgImageItems:
+    bgImageItems = [
+      ...NAVIGATION_ITEMS.slice(0, 8),
+      ...bgImageItems.slice(0, 8),
+      ...NAVIGATION_ITEMS.slice(8),
+      ...bgImageItems.slice(8),
+    ];
+  } else {
+    bgImageItems = NAVIGATION_ITEMS.concat(bgImageItems);
+  }
+  await test_contextmenu("#test-background-image", bgImageItems);
+
+  // Don't show image related context menu commands for links with background images.
+  await test_contextmenu("#test-background-image-link", [
+    "context-openlinkintab",
+    true,
+    ...(hasContainers ? ["context-openlinkinusercontext-menu", true] : []),
+    // We need a blank entry here because the containers submenu is
+    // dynamically generated with no ids.
+    ...(hasContainers ? ["", null] : []),
+    "context-openlink",
+    true,
+    "context-openlinkprivate",
+    true,
+    "---",
+    null,
+    "context-bookmarklink",
+    true,
+    "context-savelink",
+    true,
+    "context-copylink",
+    true,
+    "---",
+    null,
+    "context-searchselect",
+    true,
+    "context-searchselect-private",
+    true,
+  ]);
+
+  // Don't show image related context menu commands when there is a selection
+  // with background images.
+  await test_contextmenu(
+    "#test-background-image",
+    [
+      "context-copy",
+      true,
+      "context-selectall",
+      true,
+      "context-print-selection",
+      true,
+      "---",
+      null,
+      "context-take-screenshot",
+      true,
+      "---",
+      null,
+      "context-searchselect",
+      true,
+      "context-searchselect-private",
+      true,
+      "---",
+      null,
+      "context-viewpartialsource-selection",
+      true,
+    ],
+    {
+      async preCheckContextMenuFn() {
+        await selectText("#test-background-image");
+      },
+    }
+  );
+});
+
+add_task(async function test_cleanup_html() {
+  gBrowser.removeCurrentTab();
+});
+
+/**
+ * Selects the text of the element that matches the provided `selector`
+ *
+ * @param {String} selector
+ *        A selector passed to querySelector to find
+ *        the element that will be referenced.
+ */
+async function selectText(selector) {
+  await SpecialPowers.spawn(
+    gBrowser.selectedBrowser,
+    [selector],
+    async function (contentSelector) {
+      info(`Selecting text of ${contentSelector}`);
+      let doc = content.document;
+      let win = doc.defaultView;
+      win.getSelection().removeAllRanges();
+      let div = doc.createRange();
+      let element = doc.querySelector(contentSelector);
+      Assert.ok(element, "Found element to select text from");
+      div.setStartBefore(element);
+      div.setEndAfter(element);
+      win.getSelection().addRange(div);
+    }
+  );
+}
+
+/**
+ * Not all platforms support text recognition.
+ * @returns {string[]}
+ */
+function getTextRecognitionItems() {
+  return Services.prefs.getBoolPref("dom.text-recognition.enabled") &&
+    Services.appinfo.isTextRecognitionSupported
+    ? ["context-imagetext", true]
+    : [];
+}
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_badiframe.js b/browser/base/content/test/contextMenu/browser_contextmenu_badiframe.js
new file mode 100644
index 0000000000..89e7fe15e0
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_badiframe.js
@@ -0,0 +1,182 @@
+/* Tests for proper behaviour of "Show this frame" context menu options with a valid frame and
+   a frame with an invalid url.
+ */
+
+// Two frames, one with text content, the other an error page
+var invalidPage = "http://127.0.0.1:55555/";
+// eslint-disable-next-line @microsoft/sdl/no-insecure-url
+var validPage = "http://example.com/";
+var testPage =
+  'data:text/html,<frameset cols="400,400"><frame src="' +
+  validPage +
+  '"><frame src="' +
+  invalidPage +
+  '"></frameset>';
+
+async function openTestPage() {
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:blank",
+    true,
+    true
+  );
+  let browser = tab.linkedBrowser;
+
+  // The test page has a top-level document and two subframes. One of
+  // those subframes is an error page, which doesn't fire a load event.
+  // We'll use BrowserTestUtils.browserLoaded and have it wait for all
+  // 3 loads before resolving.
+  let expectedLoads = 3;
+  let pageAndIframesLoaded = BrowserTestUtils.browserLoaded(
+    browser,
+    true /* includeSubFrames */,
+    url => {
+      expectedLoads--;
+      return !expectedLoads;
+    },
+    true /* maybeErrorPage */
+  );
+  BrowserTestUtils.loadURIString(browser, testPage);
+  await pageAndIframesLoaded;
+
+  // Make sure both the top-level document and the iframe documents have
+  // had a chance to present. We need this so that the context menu event
+  // gets dispatched properly.
+  for (let bc of [
+    ...browser.browsingContext.children,
+    browser.browsingContext,
+  ]) {
+    await SpecialPowers.spawn(bc, [], async function () {
+      await new Promise(resolve => {
+        content.requestAnimationFrame(resolve);
+      });
+    });
+  }
+}
+
+async function selectFromFrameMenu(frameNumber, menuId) {
+  const contextMenu = document.getElementById("contentAreaContextMenu");
+
+  let popupShownPromise = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popupshown"
+  );
+
+  await BrowserTestUtils.synthesizeMouseAtPoint(
+    40,
+    40,
+    {
+      type: "contextmenu",
+      button: 2,
+    },
+    gBrowser.selectedBrowser.browsingContext.children[frameNumber]
+  );
+
+  await popupShownPromise;
+
+  let frameItem = document.getElementById("frame");
+  let framePopup = frameItem.menupopup;
+  let subPopupShownPromise = BrowserTestUtils.waitForEvent(
+    framePopup,
+    "popupshown"
+  );
+
+  frameItem.openMenu(true);
+  await subPopupShownPromise;
+
+  let subPopupHiddenPromise = BrowserTestUtils.waitForEvent(
+    framePopup,
+    "popuphidden"
+  );
+  let contextMenuHiddenPromise = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popuphidden"
+  );
+  contextMenu.activateItem(document.getElementById(menuId));
+  await subPopupHiddenPromise;
+  await contextMenuHiddenPromise;
+}
+
+add_task(async function testOpenFrame() {
+  for (let frameNumber = 0; frameNumber < 2; frameNumber++) {
+    await openTestPage();
+
+    let expectedResultURI = [validPage, invalidPage][frameNumber];
+
+    info("show only this frame for " + expectedResultURI);
+
+    let browserLoadedPromise = BrowserTestUtils.browserLoaded(
+      gBrowser.selectedBrowser,
+      false,
+      expectedResultURI,
+      frameNumber == 1
+    );
+
+    await selectFromFrameMenu(frameNumber, "context-showonlythisframe");
+    await browserLoadedPromise;
+
+    is(
+      gBrowser.selectedBrowser.currentURI.spec,
+      expectedResultURI,
+      "Should navigate to page url, not about:neterror"
+    );
+
+    gBrowser.removeCurrentTab();
+  }
+});
+
+add_task(async function testOpenFrameInTab() {
+  for (let frameNumber = 0; frameNumber < 2; frameNumber++) {
+    await openTestPage();
+
+    let expectedResultURI = [validPage, invalidPage][frameNumber];
+
+    info("open frame in tab for " + expectedResultURI);
+
+    let newTabPromise = BrowserTestUtils.waitForNewTab(
+      gBrowser,
+      expectedResultURI,
+      false
+    );
+    await selectFromFrameMenu(frameNumber, "context-openframeintab");
+    let newTab = await newTabPromise;
+
+    await BrowserTestUtils.switchTab(gBrowser, newTab);
+
+    // We should now have the error page in a new, active tab.
+    is(
+      gBrowser.selectedBrowser.currentURI.spec,
+      expectedResultURI,
+      "New tab should have page url, not about:neterror"
+    );
+
+    gBrowser.removeCurrentTab();
+    gBrowser.removeCurrentTab();
+  }
+});
+
+add_task(async function testOpenFrameInWindow() {
+  for (let frameNumber = 0; frameNumber < 2; frameNumber++) {
+    await openTestPage();
+
+    let expectedResultURI = [validPage, invalidPage][frameNumber];
+
+    info("open frame in window for " + expectedResultURI);
+
+    let newWindowPromise = BrowserTestUtils.waitForNewWindow({
+      url: frameNumber == 1 ? invalidPage : validPage,
+      maybeErrorPage: frameNumber == 1,
+    });
+    await selectFromFrameMenu(frameNumber, "context-openframe");
+    let newWindow = await newWindowPromise;
+
+    is(
+      newWindow.gBrowser.selectedBrowser.currentURI.spec,
+      expectedResultURI,
+      "New window should have page url, not about:neterror"
+    );
+
+    newWindow.close();
+    gBrowser.removeCurrentTab();
+  }
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_contenteditable.js b/browser/base/content/test/contextMenu/browser_contextmenu_contenteditable.js
new file mode 100644
index 0000000000..ccb0be8d95
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_contenteditable.js
@@ -0,0 +1,118 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+let contextMenu;
+
+const example_base =
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com/browser/browser/base/content/test/contextMenu/";
+const chrome_base =
+  "chrome://mochitests/content/browser/browser/base/content/test/contextMenu/";
+
+/* import-globals-from contextmenu_common.js */
+Services.scriptloader.loadSubScript(
+  chrome_base + "contextmenu_common.js",
+  this
+);
+
+async function openMenuAndPaste(browser, useFormatting) {
+  const kElementToUse = "test-contenteditable-spellcheck-false";
+  let oldText = await SpecialPowers.spawn(browser, [kElementToUse], elemID => {
+    return content.document.getElementById(elemID).textContent;
+  });
+
+  // Open context menu and paste
+  await test_contextmenu(
+    "#" + kElementToUse,
+    [
+      "context-undo",
+      null, // whether we can undo changes mid-test.
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      false,
+      "context-copy",
+      false,
+      "context-paste",
+      true,
+      "context-paste-no-formatting",
+      true,
+      "context-delete",
+      false,
+      "context-selectall",
+      true,
+    ],
+    {
+      keepMenuOpen: true,
+    }
+  );
+  let popupHidden = BrowserTestUtils.waitForPopupEvent(contextMenu, "hidden");
+  let menuID = "context-paste" + (useFormatting ? "" : "-no-formatting");
+  contextMenu.activateItem(document.getElementById(menuID));
+  await popupHidden;
+  await SpecialPowers.spawn(
+    browser,
+    [kElementToUse, oldText, useFormatting],
+    (elemID, textToReset, expectStrong) => {
+      let node = content.document.getElementById(elemID);
+      Assert.stringContains(
+        node.textContent,
+        "Bold text",
+        "Text should have been pasted"
+      );
+      if (expectStrong) {
+        isnot(
+          node.querySelector("strong"),
+          null,
+          "Should be markup in the text."
+        );
+      } else {
+        is(
+          node.querySelector("strong"),
+          null,
+          "Should be no markup in the text."
+        );
+      }
+      node.textContent = textToReset;
+    }
+  );
+}
+
+add_task(async function test_contenteditable() {
+  // Put some HTML on the clipboard:
+  const xferable = Cc["@mozilla.org/widget/transferable;1"].createInstance(
+    Ci.nsITransferable
+  );
+  xferable.init(null);
+  xferable.addDataFlavor("text/html");
+  xferable.setTransferData(
+    "text/html",
+    PlacesUtils.toISupportsString("<strong>Bold text</strong>")
+  );
+  xferable.addDataFlavor("text/plain");
+  xferable.setTransferData(
+    "text/plain",
+    PlacesUtils.toISupportsString("Bold text")
+  );
+  Services.clipboard.setData(
+    xferable,
+    null,
+    Services.clipboard.kGlobalClipboard
+  );
+
+  let url = example_base + "subtst_contextmenu.html";
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url,
+    },
+    async function (browser) {
+      await openMenuAndPaste(browser, false);
+      await openMenuAndPaste(browser, true);
+    }
+  );
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_iframe.js b/browser/base/content/test/contextMenu/browser_contextmenu_iframe.js
new file mode 100644
index 0000000000..bd52862eb4
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_iframe.js
@@ -0,0 +1,73 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_LINK = "https://example.com/";
+const RESOURCE_LINK =
+  getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content",
+    "https://example.com"
+  ) + "test_contextmenu_iframe.html";
+
+/* This test checks that a context menu can open up
+ * a frame into it's own tab. */
+
+add_task(async function test_open_iframe() {
+  let testTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    RESOURCE_LINK
+  );
+  const selector = "#iframe";
+  const openPromise = BrowserTestUtils.waitForNewTab(
+    gBrowser,
+    TEST_LINK,
+    false
+  );
+  const contextMenu = document.getElementById("contentAreaContextMenu");
+  is(contextMenu.state, "closed", "checking if popup is closed");
+  let awaitPopupShown = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popupshown"
+  );
+  await BrowserTestUtils.synthesizeMouseAtCenter(
+    selector,
+    {
+      type: "contextmenu",
+      button: 2,
+      centered: true,
+    },
+    gBrowser.selectedBrowser
+  );
+  await awaitPopupShown;
+  info("Popup Shown");
+  const awaitPopupHidden = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popuphidden"
+  );
+
+  // Open frame submenu
+  const frameItem = contextMenu.querySelector("#frame");
+  const menuPopup = frameItem.menupopup;
+  const menuPopupPromise = BrowserTestUtils.waitForEvent(
+    menuPopup,
+    "popupshown"
+  );
+  frameItem.openMenu(true);
+  await menuPopupPromise;
+
+  let domItem = contextMenu.querySelector("#context-openframeintab");
+  info("Going to click item " + domItem.id);
+  ok(
+    BrowserTestUtils.is_visible(domItem),
+    "DOM context menu item tab should be visible"
+  );
+  ok(!domItem.disabled, "DOM context menu item tab shouldn't be disabled");
+  contextMenu.activateItem(domItem);
+
+  let openedTab = await openPromise;
+  await awaitPopupHidden;
+  await BrowserTestUtils.removeTab(openedTab);
+
+  BrowserTestUtils.removeTab(testTab);
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_input.js b/browser/base/content/test/contextMenu/browser_contextmenu_input.js
new file mode 100644
index 0000000000..c580a8184a
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_input.js
@@ -0,0 +1,387 @@
+"use strict";
+
+let contextMenu;
+let hasPocket = Services.prefs.getBoolPref("extensions.pocket.enabled");
+
+const NAVIGATION_ITEMS =
+  AppConstants.platform == "macosx"
+    ? [
+        "context-back",
+        false,
+        "context-forward",
+        false,
+        "context-reload",
+        true,
+        "---",
+        null,
+        "context-bookmarkpage",
+        true,
+      ]
+    : [
+        "context-navigation",
+        null,
+        [
+          "context-back",
+          false,
+          "context-forward",
+          false,
+          "context-reload",
+          true,
+          "context-bookmarkpage",
+          true,
+        ],
+        null,
+        "---",
+        null,
+      ];
+
+add_task(async function test_setup() {
+  const example_base =
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com/browser/browser/base/content/test/contextMenu/";
+  const url = example_base + "subtst_contextmenu_input.html";
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+
+  const chrome_base =
+    "chrome://mochitests/content/browser/browser/base/content/test/contextMenu/";
+  const contextmenu_common = chrome_base + "contextmenu_common.js";
+  /* import-globals-from contextmenu_common.js */
+  Services.scriptloader.loadSubScript(contextmenu_common, this);
+});
+
+add_task(async function test_text_input() {
+  await test_contextmenu("#input_text", [
+    "context-undo",
+    false,
+    "context-redo",
+    false,
+    "---",
+    null,
+    "context-cut",
+    false,
+    "context-copy",
+    false,
+    "context-paste",
+    null, // ignore clipboard state
+    "context-delete",
+    false,
+    "context-selectall",
+    false,
+    "---",
+    null,
+    "spell-check-enabled",
+    true,
+  ]);
+});
+
+add_task(async function test_text_input_disabled() {
+  await test_contextmenu(
+    "#input_disabled",
+    [
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      false,
+      "context-copy",
+      false,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      false,
+      "context-selectall",
+      false,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+    ],
+    { skipFocusChange: true }
+  );
+});
+
+add_task(async function test_password_input() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["signon.generation.enabled", false],
+      ["layout.forms.reveal-password-context-menu.enabled", true],
+    ],
+  });
+  todo(
+    false,
+    "context-selectall is enabled on osx-e10s, and windows when" +
+      " it should be disabled"
+  );
+  await test_contextmenu(
+    "#input_password",
+    [
+      "manage-saved-logins",
+      true,
+      "---",
+      null,
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      false,
+      "context-copy",
+      false,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      false,
+      "context-selectall",
+      null,
+      "context-reveal-password",
+      null,
+    ],
+    {
+      skipFocusChange: true,
+      // Need to dynamically add the "password" type or LoginManager
+      // will think that the form inputs on the page are part of a login form
+      // and will add fill-login context menu items. The element needs to be
+      // re-created as type=text afterwards since it uses hasBeenTypePassword.
+      async preCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let doc = content.document;
+            let input = doc.getElementById("input_password");
+            input.type = "password";
+            input.clientTop; // force layout flush
+          }
+        );
+      },
+      async postCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let doc = content.document;
+            let input = doc.getElementById("input_password");
+            input.outerHTML = `<input id=\"input_password\">`;
+            input.clientTop; // force layout flush
+          }
+        );
+      },
+    }
+  );
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function firefox_relay_input() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["signon.firefoxRelay.feature", "enabled"]],
+  });
+
+  await test_contextmenu("#input_username", [
+    "use-relay-mask",
+    true,
+    "---",
+    null,
+    "context-undo",
+    false,
+    "context-redo",
+    false,
+    "---",
+    null,
+    "context-cut",
+    false,
+    "context-copy",
+    false,
+    "context-paste",
+    null, // ignore clipboard state
+    "context-delete",
+    false,
+    "context-selectall",
+    false,
+    "---",
+    null,
+    "spell-check-enabled",
+    true,
+  ]);
+
+  await test_contextmenu(
+    "#input_email",
+    [
+      "use-relay-mask",
+      true,
+      "---",
+      null,
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      false,
+      "context-copy",
+      false,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      false,
+      "context-selectall",
+      null,
+    ],
+    {
+      skipFocusChange: true,
+    }
+  );
+
+  await SpecialPowers.popPrefEnv();
+});
+
+add_task(async function test_tel_email_url_number_input() {
+  todo(
+    false,
+    "context-selectall is enabled on osx-e10s, and windows when" +
+      " it should be disabled"
+  );
+  for (let selector of [
+    "#input_email",
+    "#input_url",
+    "#input_tel",
+    "#input_number",
+  ]) {
+    await test_contextmenu(
+      selector,
+      [
+        "context-undo",
+        false,
+        "context-redo",
+        false,
+        "---",
+        null,
+        "context-cut",
+        false,
+        "context-copy",
+        false,
+        "context-paste",
+        null, // ignore clipboard state
+        "context-delete",
+        false,
+        "context-selectall",
+        null,
+      ],
+      {
+        skipFocusChange: true,
+      }
+    );
+  }
+});
+
+add_task(
+  async function test_date_time_color_range_month_week_datetimelocal_input() {
+    for (let selector of [
+      "#input_date",
+      "#input_time",
+      "#input_color",
+      "#input_range",
+      "#input_month",
+      "#input_week",
+      "#input_datetime-local",
+    ]) {
+      await test_contextmenu(
+        selector,
+        [
+          ...NAVIGATION_ITEMS,
+          "context-savepage",
+          true,
+          ...(hasPocket ? ["context-pocket", true] : []),
+          "context-selectall",
+          null,
+          "---",
+          null,
+          "context-viewsource",
+          true,
+        ],
+        {
+          skipFocusChange: true,
+        }
+      );
+    }
+  }
+);
+
+add_task(async function test_search_input() {
+  todo(
+    false,
+    "context-selectall is enabled on osx-e10s, and windows when" +
+      " it should be disabled"
+  );
+  await test_contextmenu(
+    "#input_search",
+    [
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      false,
+      "context-copy",
+      false,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      false,
+      "context-selectall",
+      null,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+    ],
+    { skipFocusChange: true }
+  );
+});
+
+add_task(async function test_text_input_readonly() {
+  todo(
+    false,
+    "context-selectall is enabled on osx-e10s, and windows when" +
+      " it should be disabled"
+  );
+  todo(
+    false,
+    "spell-check should not be enabled for input[readonly]. see bug 1246296"
+  );
+  await test_contextmenu(
+    "#input_readonly",
+    [
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      false,
+      "context-copy",
+      false,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      false,
+      "context-selectall",
+      null,
+    ],
+    {
+      skipFocusChange: true,
+    }
+  );
+});
+
+add_task(async function test_cleanup() {
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_inspect.js b/browser/base/content/test/contextMenu/browser_contextmenu_inspect.js
new file mode 100644
index 0000000000..94241e9e1f
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_inspect.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check that we show the inspect item(s) as appropriate.
+ */
+add_task(async function test_contextmenu_inspect() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["devtools.selfxss.count", 0],
+      ["devtools.everOpened", false],
+    ],
+  });
+  let contextMenu = document.getElementById("contentAreaContextMenu");
+  await BrowserTestUtils.withNewTab("about:blank", async browser => {
+    for (let [pref, value, expectation] of [
+      ["devtools.selfxss.count", 10, true],
+      ["devtools.selfxss.count", 0, false],
+      ["devtools.everOpened", false, false],
+      ["devtools.everOpened", true, true],
+    ]) {
+      await SpecialPowers.pushPrefEnv({
+        set: [["devtools.selfxss.count", value]],
+      });
+      is(contextMenu.state, "closed", "checking if popup is closed");
+      let promisePopupShown = BrowserTestUtils.waitForEvent(
+        contextMenu,
+        "popupshown"
+      );
+      let promisePopupHidden = BrowserTestUtils.waitForEvent(
+        contextMenu,
+        "popuphidden"
+      );
+      await BrowserTestUtils.synthesizeMouse(
+        "body",
+        2,
+        2,
+        { type: "contextmenu", button: 2 },
+        browser
+      );
+      await promisePopupShown;
+      let inspectItem = document.getElementById("context-inspect");
+      ok(
+        !inspectItem.hidden,
+        `Inspect should be shown (pref ${pref} is ${value}).`
+      );
+      let inspectA11y = document.getElementById("context-inspect-a11y");
+      is(
+        inspectA11y.hidden,
+        !expectation,
+        `A11y should be ${
+          expectation ? "visible" : "hidden"
+        } (pref ${pref} is ${value}).`
+      );
+      contextMenu.hidePopup();
+      await promisePopupHidden;
+    }
+  });
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_keyword.js b/browser/base/content/test/contextMenu/browser_contextmenu_keyword.js
new file mode 100644
index 0000000000..2e1253107c
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_keyword.js
@@ -0,0 +1,198 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+let contextMenu;
+
+const example_base =
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com/browser/browser/base/content/test/contextMenu/";
+const MAIN_URL = example_base + "subtst_contextmenu_keyword.html";
+
+add_task(async function test_setup() {
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, MAIN_URL);
+
+  const chrome_base =
+    "chrome://mochitests/content/browser/browser/base/content/test/contextMenu/";
+  const contextmenu_common = chrome_base + "contextmenu_common.js";
+  /* import-globals-from contextmenu_common.js */
+  Services.scriptloader.loadSubScript(contextmenu_common, this);
+});
+
+add_task(async function test_text_input_spellcheck_noform() {
+  await test_contextmenu(
+    "#input_text_no_form",
+    [
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      null, // ignore the enabled/disabled states; there are race conditions
+      // in the edit commands but they're not relevant for what we're testing.
+      "context-copy",
+      null,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      null,
+      "context-selectall",
+      null,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+      "spell-dictionaries",
+      true,
+      [
+        "spell-check-dictionary-en-US",
+        true,
+        "---",
+        null,
+        "spell-add-dictionaries",
+        true,
+      ],
+      null,
+    ],
+    {
+      waitForSpellCheck: true,
+      async preCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let doc = content.document;
+            let input = doc.getElementById("input_text_no_form");
+            input.setAttribute("spellcheck", "true");
+            input.clientTop; // force layout flush
+          }
+        );
+      },
+    }
+  );
+});
+
+add_task(async function test_text_input_spellcheck_loginform() {
+  await test_contextmenu(
+    "#login_text",
+    [
+      "manage-saved-logins",
+      true,
+      "---",
+      null,
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      null, // ignore the enabled/disabled states; there are race conditions
+      // in the edit commands but they're not relevant for what we're testing.
+      "context-copy",
+      null,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      null,
+      "context-selectall",
+      null,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+      "spell-dictionaries",
+      true,
+      [
+        "spell-check-dictionary-en-US",
+        true,
+        "---",
+        null,
+        "spell-add-dictionaries",
+        true,
+      ],
+      null,
+    ],
+    {
+      waitForSpellCheck: true,
+      async preCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let doc = content.document;
+            let input = doc.getElementById("login_text");
+            input.setAttribute("spellcheck", "true");
+            input.clientTop; // force layout flush
+          }
+        );
+      },
+    }
+  );
+});
+
+add_task(async function test_text_input_spellcheck_searchform() {
+  await test_contextmenu(
+    "#search_text",
+    [
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      null, // ignore the enabled/disabled states; there are race conditions
+      // in the edit commands but they're not relevant for what we're testing.
+      "context-copy",
+      null,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      null,
+      "context-selectall",
+      null,
+      "---",
+      null,
+      "context-keywordfield",
+      null,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+      "spell-dictionaries",
+      true,
+      [
+        "spell-check-dictionary-en-US",
+        true,
+        "---",
+        null,
+        "spell-add-dictionaries",
+        true,
+      ],
+      null,
+    ],
+    {
+      waitForSpellCheck: true,
+      async preCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let doc = content.document;
+            let input = doc.getElementById("search_text");
+            input.setAttribute("spellcheck", "true");
+            input.clientTop; // force layout flush
+          }
+        );
+      },
+    }
+  );
+});
+
+add_task(async function test_cleanup() {
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_linkopen.js b/browser/base/content/test/contextMenu/browser_contextmenu_linkopen.js
new file mode 100644
index 0000000000..ac793b8011
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_linkopen.js
@@ -0,0 +1,109 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_LINK = "https://example.com/";
+const RESOURCE_LINK =
+  getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content",
+    "https://example.com"
+  ) + "test_contextmenu_links.html";
+
+async function activateContextAndWaitFor(selector, where) {
+  info("Starting test for " + where);
+  let contextMenuItem = "openlink";
+  let openPromise;
+  let closeMethod;
+  switch (where) {
+    case "tab":
+      contextMenuItem += "intab";
+      openPromise = BrowserTestUtils.waitForNewTab(gBrowser, TEST_LINK, false);
+      closeMethod = async tab => BrowserTestUtils.removeTab(tab);
+      break;
+    case "privatewindow":
+      contextMenuItem += "private";
+      openPromise = BrowserTestUtils.waitForNewWindow({ url: TEST_LINK }).then(
+        win => {
+          ok(
+            PrivateBrowsingUtils.isWindowPrivate(win),
+            "Should have opened a private window."
+          );
+          return win;
+        }
+      );
+      closeMethod = async win => BrowserTestUtils.closeWindow(win);
+      break;
+    case "window":
+      // No contextMenuItem suffix for normal new windows;
+      openPromise = BrowserTestUtils.waitForNewWindow({ url: TEST_LINK }).then(
+        win => {
+          ok(
+            !PrivateBrowsingUtils.isWindowPrivate(win),
+            "Should have opened a normal window."
+          );
+          return win;
+        }
+      );
+      closeMethod = async win => BrowserTestUtils.closeWindow(win);
+      break;
+  }
+  let contextMenu = document.getElementById("contentAreaContextMenu");
+  is(contextMenu.state, "closed", "checking if popup is closed");
+  let awaitPopupShown = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popupshown"
+  );
+  await BrowserTestUtils.synthesizeMouse(
+    selector,
+    0,
+    0,
+    {
+      type: "contextmenu",
+      button: 2,
+      centered: true,
+    },
+    gBrowser.selectedBrowser
+  );
+  await awaitPopupShown;
+  info("Popup Shown");
+  let awaitPopupHidden = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popuphidden"
+  );
+  let domItem = contextMenu.querySelector("#context-" + contextMenuItem);
+  info("Going to click item " + domItem.id);
+  ok(
+    BrowserTestUtils.is_visible(domItem),
+    "DOM context menu item " + where + " should be visible"
+  );
+  ok(
+    !domItem.disabled,
+    "DOM context menu item " + where + " shouldn't be disabled"
+  );
+  contextMenu.activateItem(domItem);
+  await awaitPopupHidden;
+
+  info("Waiting for the link to open");
+  let openedThing = await openPromise;
+  info("Waiting for the opened window/tab to close");
+  await closeMethod(openedThing);
+}
+
+add_task(async function test_select_text_link() {
+  let testTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    RESOURCE_LINK
+  );
+  for (let elementID of [
+    "test-link",
+    "test-image-link",
+    "svg-with-link",
+    "svg-with-relative-link",
+  ]) {
+    for (let where of ["tab", "window", "privatewindow"]) {
+      await activateContextAndWaitFor("#" + elementID, where);
+    }
+  }
+  BrowserTestUtils.removeTab(testTab);
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.html b/browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.html
new file mode 100644
index 0000000000..ca96fcfaa0
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+  <meta charset="utf-8" />
+</head>
+
+<body onload="add_content()">
+  <p>This example creates a typed array containing the ASCII codes for the space character through the letter Z, then
+    converts it to an object URL.A link to open that object URL is created. Click the link to see the decoded object
+    URL.</p>
+  <br />
+  <br />
+  <a id='blob-url-link'>Open the array URL</a>
+  <br />
+  <br />
+  <a id='blob-url-referrer-link'>Open the URL that fetches the URL above</a>
+
+  <script>
+    function typedArrayToURL(typedArray, mimeType) {
+      return URL.createObjectURL(new Blob([typedArray.buffer], { type: mimeType }))
+    }
+
+    function add_content() {
+      const bytes = new Uint8Array(59);
+
+      for (let i = 0;i < 59;i++) {
+        bytes[i] = 32 + i;
+      }
+
+      const url = typedArrayToURL(bytes, 'text/plain');
+      document.getElementById('blob-url-link').href = url;
+
+      const ref_url = URL.createObjectURL(new Blob([`
+        <body>
+          <script>
+            fetch("${url}", {headers: {'Content-Type': 'text/plain'}})
+                  .then((response) => {
+              response.text().then((textData) => {
+                var pre = document.createElement("pre");
+                pre.textContent = textData.trim();
+                document.body.insertBefore(pre, document.body.firstChild);
+              });
+            });
+          <\/script>
+        <\/body>
+      `], { type: 'text/html' }));
+
+      document.getElementById('blob-url-referrer-link').href = ref_url;
+    };
+
+  </script>
+
+</body>
+
+</html>
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.js b/browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.js
new file mode 100644
index 0000000000..cbf1b27590
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_loadblobinnewtab.js
@@ -0,0 +1,186 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const RESOURCE_LINK =
+  getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content",
+    "https://example.com"
+  ) + "browser_contextmenu_loadblobinnewtab.html";
+
+const blobDataAsString = `!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ`;
+
+// Helper method to right click on the provided link (selector as id),
+// open in new tab and return the content of the first <pre> under the
+// <body> of the new tab's document.
+async function rightClickOpenInNewTabAndReturnContent(selector) {
+  const loaded = BrowserTestUtils.browserLoaded(
+    gBrowser.selectedBrowser,
+    false,
+    RESOURCE_LINK
+  );
+  BrowserTestUtils.loadURIString(gBrowser.selectedBrowser, RESOURCE_LINK);
+  await loaded;
+
+  const generatedBlobURL = await ContentTask.spawn(
+    gBrowser.selectedBrowser,
+    { selector },
+    async args => {
+      return content.document.getElementById(args.selector).href;
+    }
+  );
+
+  const contextMenu = document.getElementById("contentAreaContextMenu");
+  is(contextMenu.state, "closed", "checking if context menu is closed");
+
+  let awaitPopupShown = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popupshown"
+  );
+
+  await BrowserTestUtils.synthesizeMouseAtCenter(
+    "#" + selector,
+    { type: "contextmenu", button: 2 },
+    gBrowser.selectedBrowser
+  );
+  await awaitPopupShown;
+
+  let awaitPopupHidden = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popuphidden"
+  );
+
+  const openPromise = BrowserTestUtils.waitForNewTab(
+    gBrowser,
+    generatedBlobURL,
+    false
+  );
+
+  document.getElementById("context-openlinkintab").doCommand();
+
+  contextMenu.hidePopup();
+  await awaitPopupHidden;
+
+  let openTab = await openPromise;
+
+  await BrowserTestUtils.switchTab(gBrowser, gBrowser.tabs[1]);
+
+  let blobDataFromContent = await ContentTask.spawn(
+    gBrowser.selectedBrowser,
+    null,
+    async function () {
+      while (!content.document.querySelector("body pre")) {
+        await new Promise(resolve =>
+          content.setTimeout(() => {
+            resolve();
+          }, 100)
+        );
+      }
+      return content.document.body.firstElementChild.innerText.trim();
+    }
+  );
+
+  let tabClosed = BrowserTestUtils.waitForTabClosing(openTab);
+  await BrowserTestUtils.removeTab(openTab);
+  await tabClosed;
+
+  return blobDataFromContent;
+}
+
+// Helper method to open selected link in new tab (selector as id),
+// and return the content of the first <pre> under the <body> of
+// the new tab's document.
+async function openInNewTabAndReturnContent(selector) {
+  const loaded = BrowserTestUtils.browserLoaded(
+    gBrowser.selectedBrowser,
+    false,
+    RESOURCE_LINK
+  );
+  BrowserTestUtils.loadURIString(gBrowser.selectedBrowser, RESOURCE_LINK);
+  await loaded;
+
+  const generatedBlobURL = await ContentTask.spawn(
+    gBrowser.selectedBrowser,
+    { selector },
+    async args => {
+      return content.document.getElementById(args.selector).href;
+    }
+  );
+
+  let openTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    generatedBlobURL
+  );
+
+  let blobDataFromContent = await ContentTask.spawn(
+    gBrowser.selectedBrowser,
+    null,
+    async function () {
+      while (!content.document.querySelector("body pre")) {
+        await new Promise(resolve =>
+          content.setTimeout(() => {
+            resolve();
+          }, 100)
+        );
+      }
+      return content.document.body.firstElementChild.innerText.trim();
+    }
+  );
+
+  let tabClosed = BrowserTestUtils.waitForTabClosing(openTab);
+  await BrowserTestUtils.removeTab(openTab);
+  await tabClosed;
+
+  return blobDataFromContent;
+}
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.partition.bloburl_per_agent_cluster", false]],
+  });
+});
+
+add_task(async function test_rightclick_open_bloburl_in_new_tab() {
+  let blobDataFromLoadedPage = await rightClickOpenInNewTabAndReturnContent(
+    "blob-url-link"
+  );
+  is(
+    blobDataFromLoadedPage,
+    blobDataAsString,
+    "The blobURL is correctly loaded"
+  );
+});
+
+add_task(async function test_rightclick_open_bloburl_referrer_in_new_tab() {
+  let blobDataFromLoadedPage = await rightClickOpenInNewTabAndReturnContent(
+    "blob-url-referrer-link"
+  );
+  is(
+    blobDataFromLoadedPage,
+    blobDataAsString,
+    "The blobURL is correctly loaded"
+  );
+});
+
+add_task(async function test_open_bloburl_in_new_tab() {
+  let blobDataFromLoadedPage = await openInNewTabAndReturnContent(
+    "blob-url-link"
+  );
+  is(
+    blobDataFromLoadedPage,
+    blobDataAsString,
+    "The blobURL is correctly loaded"
+  );
+});
+
+add_task(async function test_open_bloburl_referrer_in_new_tab() {
+  let blobDataFromLoadedPage = await openInNewTabAndReturnContent(
+    "blob-url-referrer-link"
+  );
+  is(
+    blobDataFromLoadedPage,
+    blobDataAsString,
+    "The blobURL is correctly loaded"
+  );
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_save_blocked.js b/browser/base/content/test/contextMenu/browser_contextmenu_save_blocked.js
new file mode 100644
index 0000000000..5064d9a316
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_save_blocked.js
@@ -0,0 +1,78 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+var MockFilePicker = SpecialPowers.MockFilePicker;
+MockFilePicker.init(window);
+
+function mockPromptService() {
+  let { prompt } = Services;
+  let promptService = {
+    QueryInterface: ChromeUtils.generateQI(["nsIPromptService"]),
+    alert: () => {},
+  };
+  Services.prompt = promptService;
+  registerCleanupFunction(() => {
+    Services.prompt = prompt;
+  });
+  return promptService;
+}
+
+add_task(async function test_save_link_blocked_by_extension() {
+  let ext = ExtensionTestUtils.loadExtension({
+    manifest: {
+      browser_specific_settings: { gecko: { id: "cancel@test" } },
+      name: "Cancel Test",
+      permissions: ["webRequest", "webRequestBlocking", "<all_urls>"],
+    },
+
+    background() {
+      // eslint-disable-next-line no-undef
+      browser.webRequest.onBeforeRequest.addListener(
+        details => {
+          // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+          return { cancel: details.url === "http://example.com/" };
+        },
+        { urls: ["*://*/*"] },
+        ["blocking"]
+      );
+    },
+  });
+  await ext.startup();
+
+  await BrowserTestUtils.withNewTab(
+    `data:text/html;charset=utf-8,<a href="http://example.com">Download</a>`,
+    async browser => {
+      let menu = document.getElementById("contentAreaContextMenu");
+      let popupShown = BrowserTestUtils.waitForEvent(menu, "popupshown");
+      BrowserTestUtils.synthesizeMouseAtCenter(
+        "a[href]",
+        { type: "contextmenu", button: 2 },
+        browser
+      );
+      await popupShown;
+
+      await new Promise(resolve => {
+        let promptService = mockPromptService();
+        promptService.alert = (window, title, msg) => {
+          is(
+            msg,
+            "The download cannot be saved because it is blocked by Cancel Test.",
+            "prompt should be shown"
+          );
+          setTimeout(resolve, 0);
+        };
+
+        MockFilePicker.showCallback = function (fp) {
+          ok(false, "filepicker should never been shown");
+          setTimeout(resolve, 0);
+          return Ci.nsIFilePicker.returnCancel;
+        };
+        menu.activateItem(menu.querySelector("#context-savelink"));
+      });
+    }
+  );
+
+  await ext.unload();
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_share_macosx.js b/browser/base/content/test/contextMenu/browser_contextmenu_share_macosx.js
new file mode 100644
index 0000000000..8175b93052
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_share_macosx.js
@@ -0,0 +1,144 @@
+/* Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { sinon } = ChromeUtils.importESModule(
+  "resource://testing-common/Sinon.sys.mjs"
+);
+const BASE = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com"
+);
+const TEST_URL = BASE + "browser_contextmenu_shareurl.html";
+
+let mockShareData = [
+  {
+    name: "Test",
+    menuItemTitle: "Sharing Service Test",
+    image:
+      "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAIAAAD8GO2jAAAAKE" +
+      "lEQVR42u3NQQ0AAAgEoNP+nTWFDzcoQE1udQQCgUAgEAgEAsGTYAGjxAE/G/Q2tQAAAABJRU5ErkJggg==",
+  },
+];
+
+// Setup spies for observing function calls from MacSharingService
+let shareUrlSpy = sinon.spy();
+let openSharingPreferencesSpy = sinon.spy();
+let getSharingProvidersSpy = sinon.spy();
+
+let stub = sinon.stub(gBrowser, "MacSharingService").get(() => {
+  return {
+    getSharingProviders(url) {
+      getSharingProvidersSpy(url);
+      return mockShareData;
+    },
+    shareUrl(name, url, title) {
+      shareUrlSpy(name, url, title);
+    },
+    openSharingPreferences() {
+      openSharingPreferencesSpy();
+    },
+  };
+});
+
+registerCleanupFunction(async function () {
+  stub.restore();
+});
+
+/**
+ * Test the "Share" item menus in the tab contextmenu on MacOSX.
+ */
+add_task(async function test_contextmenu_share_macosx() {
+  await BrowserTestUtils.withNewTab(TEST_URL, async () => {
+    let contextMenu = await openTabContextMenu(gBrowser.selectedTab);
+    await BrowserTestUtils.waitForMutationCondition(
+      contextMenu,
+      { childList: true },
+      () => contextMenu.querySelector(".share-tab-url-item")
+    );
+    ok(true, "Got Share item");
+
+    await openMenuPopup(contextMenu);
+    ok(getSharingProvidersSpy.calledOnce, "getSharingProviders called");
+
+    info(
+      "Check we have a service and one extra menu item for the More... button"
+    );
+    let popup = contextMenu.querySelector(".share-tab-url-item").menupopup;
+    let items = popup.querySelectorAll("menuitem");
+    is(items.length, 2, "There should be 2 sharing services.");
+
+    info("Click on the sharing service");
+    let menuPopupClosedPromised = BrowserTestUtils.waitForPopupEvent(
+      contextMenu,
+      "hidden"
+    );
+    let shareButton = items[0];
+    is(
+      shareButton.label,
+      mockShareData[0].menuItemTitle,
+      "Share button's label should match the service's menu item title. "
+    );
+    is(
+      shareButton.getAttribute("share-name"),
+      mockShareData[0].name,
+      "Share button's share-name value should match the service's name. "
+    );
+
+    popup.activateItem(shareButton);
+    await menuPopupClosedPromised;
+
+    ok(shareUrlSpy.calledOnce, "shareUrl called");
+
+    info("Check the correct data was shared.");
+    let [name, url, title] = shareUrlSpy.getCall(0).args;
+    is(name, mockShareData[0].name, "Shared correct service name");
+    is(url, TEST_URL, "Shared correct URL");
+    is(title, "Sharing URL", "Shared the correct title.");
+
+    info("Test the More... button");
+    contextMenu = await openTabContextMenu(gBrowser.selectedTab);
+    await openMenuPopup(contextMenu);
+    // Since the tab context menu was collapsed previously, the popup needs to get the
+    // providers again.
+    ok(getSharingProvidersSpy.calledTwice, "getSharingProviders called again");
+    popup = contextMenu.querySelector(".share-tab-url-item").menupopup;
+    items = popup.querySelectorAll("menuitem");
+    is(items.length, 2, "There should be 2 sharing services.");
+
+    info("Click on the More Button");
+    let moreButton = items[1];
+    menuPopupClosedPromised = BrowserTestUtils.waitForPopupEvent(
+      contextMenu,
+      "hidden"
+    );
+    popup.activateItem(moreButton);
+    await menuPopupClosedPromised;
+    ok(openSharingPreferencesSpy.calledOnce, "openSharingPreferences called");
+  });
+});
+
+/**
+ * Helper for opening the toolbar context menu.
+ */
+async function openTabContextMenu(tab) {
+  info("Opening tab context menu");
+  let contextMenu = document.getElementById("tabContextMenu");
+  let openTabContextMenuPromise = BrowserTestUtils.waitForPopupEvent(
+    contextMenu,
+    "shown"
+  );
+
+  EventUtils.synthesizeMouseAtCenter(tab, { type: "contextmenu" });
+  await openTabContextMenuPromise;
+  return contextMenu;
+}
+
+async function openMenuPopup(contextMenu) {
+  info("Opening Share menu popup.");
+  let shareItem = contextMenu.querySelector(".share-tab-url-item");
+  shareItem.openMenu(true);
+  await BrowserTestUtils.waitForPopupEvent(shareItem.menupopup, "shown");
+}
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_share_win.js b/browser/base/content/test/contextMenu/browser_contextmenu_share_win.js
new file mode 100644
index 0000000000..716da584c5
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_share_win.js
@@ -0,0 +1,77 @@
+/* Any copyright is dedicated to the Public Domain.
+  http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { sinon } = ChromeUtils.importESModule(
+  "resource://testing-common/Sinon.sys.mjs"
+);
+const BASE = getRootDirectory(gTestPath).replace(
+  "chrome://mochitests/content",
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com"
+);
+const TEST_URL = BASE + "browser_contextmenu_shareurl.html";
+
+// Setup spies for observing function calls from MacSharingService
+let shareUrlSpy = sinon.spy();
+
+let stub = sinon.stub(gBrowser.ownerGlobal, "WindowsUIUtils").get(() => {
+  return {
+    shareUrl(url, title) {
+      shareUrlSpy(url, title);
+    },
+  };
+});
+
+registerCleanupFunction(async function () {
+  stub.restore();
+});
+
+/**
+ * Test the "Share" item in the tab contextmenu on Windows.
+ */
+add_task(async function test_contextmenu_share_win() {
+  await BrowserTestUtils.withNewTab(TEST_URL, async () => {
+    await openTabContextMenu(gBrowser.selectedTab);
+
+    let contextMenu = document.getElementById("tabContextMenu");
+    let contextMenuClosedPromise = BrowserTestUtils.waitForPopupEvent(
+      contextMenu,
+      "hidden"
+    );
+    let itemCreated = contextMenu.querySelector(".share-tab-url-item");
+    if (!AppConstants.isPlatformAndVersionAtLeast("win", "6.4")) {
+      Assert.ok(!itemCreated, "We only expose share on windows 10 and above");
+      contextMenu.hidePopup();
+      await contextMenuClosedPromise;
+      return;
+    }
+
+    ok(itemCreated, "Got Share item on Windows 10");
+
+    info("Test the correct URL is shared when Share is selected.");
+    EventUtils.synthesizeMouseAtCenter(itemCreated, {});
+    await contextMenuClosedPromise;
+
+    ok(shareUrlSpy.calledOnce, "shareUrl called");
+    let [url, title] = shareUrlSpy.getCall(0).args;
+    is(url, TEST_URL, "Shared correct URL");
+    is(title, "Sharing URL", "Shared correct URL");
+  });
+});
+
+/**
+ * Helper for opening the toolbar context menu.
+ */
+async function openTabContextMenu(tab) {
+  info("Opening tab context menu");
+  let contextMenu = document.getElementById("tabContextMenu");
+  let openTabContextMenuPromise = BrowserTestUtils.waitForPopupEvent(
+    contextMenu,
+    "shown"
+  );
+
+  EventUtils.synthesizeMouseAtCenter(tab, { type: "contextmenu" });
+  await openTabContextMenuPromise;
+}
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_shareurl.html b/browser/base/content/test/contextMenu/browser_contextmenu_shareurl.html
new file mode 100644
index 0000000000..c7fb193972
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_shareurl.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<title>Sharing URL</title>
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_spellcheck.js b/browser/base/content/test/contextMenu/browser_contextmenu_spellcheck.js
new file mode 100644
index 0000000000..6f556a58dd
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_spellcheck.js
@@ -0,0 +1,334 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+let contextMenu;
+
+const { sinon } = ChromeUtils.importESModule(
+  "resource://testing-common/Sinon.sys.mjs"
+);
+
+const example_base =
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  "http://example.com/browser/browser/base/content/test/contextMenu/";
+const MAIN_URL = example_base + "subtst_contextmenu_input.html";
+
+add_task(async function test_setup() {
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, MAIN_URL);
+
+  const chrome_base =
+    "chrome://mochitests/content/browser/browser/base/content/test/contextMenu/";
+  const contextmenu_common = chrome_base + "contextmenu_common.js";
+  /* import-globals-from contextmenu_common.js */
+  Services.scriptloader.loadSubScript(contextmenu_common, this);
+});
+
+add_task(async function test_text_input_spellcheck() {
+  await test_contextmenu(
+    "#input_spellcheck_no_value",
+    [
+      "context-undo",
+      false,
+      "context-redo",
+      false,
+      "---",
+      null,
+      "context-cut",
+      null, // ignore the enabled/disabled states; there are race conditions
+      // in the edit commands but they're not relevant for what we're testing.
+      "context-copy",
+      null,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      null,
+      "context-selectall",
+      null,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+      "spell-dictionaries",
+      true,
+      [
+        "spell-check-dictionary-en-US",
+        true,
+        "---",
+        null,
+        "spell-add-dictionaries",
+        true,
+      ],
+      null,
+    ],
+    {
+      waitForSpellCheck: true,
+      async preCheckContextMenuFn() {
+        await SpecialPowers.spawn(
+          gBrowser.selectedBrowser,
+          [],
+          async function () {
+            let doc = content.document;
+            let input = doc.getElementById("input_spellcheck_no_value");
+            input.setAttribute("spellcheck", "true");
+            input.clientTop; // force layout flush
+          }
+        );
+      },
+    }
+  );
+});
+
+add_task(async function test_text_input_spellcheckwrong() {
+  await test_contextmenu(
+    "#input_spellcheck_incorrect",
+    [
+      "*prodigality",
+      true, // spelling suggestion
+      "spell-add-to-dictionary",
+      true,
+      "---",
+      null,
+      "context-undo",
+      null,
+      "context-redo",
+      null,
+      "---",
+      null,
+      "context-cut",
+      null,
+      "context-copy",
+      null,
+      "context-paste",
+      null, // ignore clipboard state
+      "context-delete",
+      null,
+      "context-selectall",
+      null,
+      "---",
+      null,
+      "spell-check-enabled",
+      true,
+      "spell-dictionaries",
+      true,
+      [
+        "spell-check-dictionary-en-US",
+        true,
+        "---",
+        null,
+        "spell-add-dictionaries",
+        true,
+      ],
+      null,
+    ],
+    { waitForSpellCheck: true }
+  );
+});
+
+const kCorrectItems = [
+  "context-undo",
+  false,
+  "context-redo",
+  false,
+  "---",
+  null,
+  "context-cut",
+  null,
+  "context-copy",
+  null,
+  "context-paste",
+  null, // ignore clipboard state
+  "context-delete",
+  null,
+  "context-selectall",
+  null,
+  "---",
+  null,
+  "spell-check-enabled",
+  true,
+  "spell-dictionaries",
+  true,
+  [
+    "spell-check-dictionary-en-US",
+    true,
+    "---",
+    null,
+    "spell-add-dictionaries",
+    true,
+  ],
+  null,
+];
+
+add_task(async function test_text_input_spellcheckcorrect() {
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+  });
+});
+
+add_task(async function test_text_input_spellcheck_deadactor() {
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+    keepMenuOpen: true,
+  });
+  let wgp = gBrowser.selectedBrowser.browsingContext.currentWindowGlobal;
+
+  // Now the menu is open, and spellcheck is running, switch to another tab and
+  // close the original:
+  let tab = gBrowser.selectedTab;
+  await BrowserTestUtils.openNewForegroundTab(gBrowser, "https://example.org");
+  BrowserTestUtils.removeTab(tab);
+  // Ensure we've invalidated the actor
+  await TestUtils.waitForCondition(
+    () => wgp.isClosed,
+    "Waiting for actor to be dead after tab closes"
+  );
+  contextMenu.hidePopup();
+
+  // Now go back to the input testcase:
+  BrowserTestUtils.loadURIString(gBrowser.selectedBrowser, MAIN_URL);
+  await BrowserTestUtils.browserLoaded(
+    gBrowser.selectedBrowser,
+    false,
+    MAIN_URL
+  );
+
+  // Check the menu still looks the same, keep it open again:
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+    keepMenuOpen: true,
+  });
+
+  // Now navigate the tab, after ensuring there's an unload listener, so
+  // we don't end up in bfcache:
+  await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function () {
+    content.document.body.setAttribute("onunload", "");
+  });
+  wgp = gBrowser.selectedBrowser.browsingContext.currentWindowGlobal;
+
+  const NEW_URL = MAIN_URL.replace(".com", ".org");
+  BrowserTestUtils.loadURIString(gBrowser.selectedBrowser, NEW_URL);
+  await BrowserTestUtils.browserLoaded(
+    gBrowser.selectedBrowser,
+    false,
+    NEW_URL
+  );
+  // Ensure we've invalidated the actor
+  await TestUtils.waitForCondition(
+    () => wgp.isClosed,
+    "Waiting for actor to be dead after onunload"
+  );
+  contextMenu.hidePopup();
+
+  // Check the menu *still* looks the same (and keep it open again):
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+    keepMenuOpen: true,
+  });
+
+  // Check what happens if the actor stays alive by loading the same page
+  // again; now the context menu stuff should be destroyed by the menu
+  // hiding, nothing else.
+  wgp = gBrowser.selectedBrowser.browsingContext.currentWindowGlobal;
+  BrowserTestUtils.loadURIString(gBrowser.selectedBrowser, NEW_URL);
+  await BrowserTestUtils.browserLoaded(
+    gBrowser.selectedBrowser,
+    false,
+    NEW_URL
+  );
+  contextMenu.hidePopup();
+
+  // Check the menu still looks the same:
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+  });
+  // And test it a last time without any navigation:
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+  });
+});
+
+add_task(async function test_text_input_spellcheck_multilingual() {
+  if (AppConstants.platform == "macosx") {
+    todo(
+      false,
+      "Need macOS support for closemenu attributes in order to " +
+        "stop the spellcheck menu closing, see bug 1796007."
+    );
+    return;
+  }
+  let sandbox = sinon.createSandbox();
+  registerCleanupFunction(() => sandbox.restore());
+
+  // We need to mock InlineSpellCheckerUI.mRemote's properties, but
+  // InlineSpellCheckerUI.mRemote won't exist until we initialize the context
+  // menu, so do that and then manually reinit the spellcheck bits so
+  // we control them:
+  await test_contextmenu("#input_spellcheck_correct", kCorrectItems, {
+    waitForSpellCheck: true,
+    keepMenuOpen: true,
+  });
+  sandbox
+    .stub(InlineSpellCheckerUI.mRemote, "dictionaryList")
+    .get(() => ["en-US", "nl-NL"]);
+  let setterSpy = sandbox.spy();
+  sandbox
+    .stub(InlineSpellCheckerUI.mRemote, "currentDictionaries")
+    .get(() => ["en-US"])
+    .set(setterSpy);
+  // Re-init the spellcheck items:
+  InlineSpellCheckerUI.clearDictionaryListFromMenu();
+  gContextMenu.initSpellingItems();
+
+  let dictionaryMenu = document.getElementById("spell-dictionaries-menu");
+  let menuOpen = BrowserTestUtils.waitForPopupEvent(dictionaryMenu, "shown");
+  dictionaryMenu.parentNode.openMenu(true);
+  await menuOpen;
+  checkMenu(dictionaryMenu, [
+    "spell-check-dictionary-nl-NL",
+    true,
+    "spell-check-dictionary-en-US",
+    true,
+    "---",
+    null,
+    "spell-add-dictionaries",
+    true,
+  ]);
+  is(
+    dictionaryMenu.children.length,
+    4,
+    "Should have 2 dictionaries, a separator and 'add more dictionaries' item in the menu."
+  );
+
+  let dictionaryEventPromise = BrowserTestUtils.waitForEvent(
+    document,
+    "spellcheck-changed"
+  );
+  dictionaryMenu.activateItem(
+    dictionaryMenu.querySelector("[data-locale-code*=nl]")
+  );
+  let event = await dictionaryEventPromise;
+  Assert.deepEqual(
+    event.detail?.dictionaries,
+    ["en-US", "nl-NL"],
+    "Should have sent right dictionaries with event."
+  );
+  ok(setterSpy.called, "Should have set currentDictionaries");
+  Assert.deepEqual(
+    setterSpy.firstCall?.args,
+    [["en-US", "nl-NL"]],
+    "Should have called setter with single argument array of 2 dictionaries."
+  );
+  // Allow for the menu to potentially close:
+  await new Promise(r => Services.tm.dispatchToMainThread(r));
+  // Check it hasn't:
+  is(
+    dictionaryMenu.closest("menupopup").state,
+    "open",
+    "Main menu should still be open."
+  );
+  contextMenu.hidePopup();
+});
+
+add_task(async function test_cleanup() {
+  BrowserTestUtils.removeTab(gBrowser.selectedTab);
+});
diff --git a/browser/base/content/test/contextMenu/browser_contextmenu_touch.js b/browser/base/content/test/contextMenu/browser_contextmenu_touch.js
new file mode 100644
index 0000000000..2f4e5a79c6
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_contextmenu_touch.js
@@ -0,0 +1,94 @@
+/* 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 test checks that context menus are in touchmode
+ * when opened through a touch event (long tap). */
+
+async function openAndCheckContextMenu(contextMenu, target) {
+  is(contextMenu.state, "closed", "Context menu is initally closed.");
+
+  let popupshown = BrowserTestUtils.waitForEvent(contextMenu, "popupshown");
+  EventUtils.synthesizeNativeTapAtCenter(target, true);
+  await popupshown;
+
+  is(contextMenu.state, "open", "Context menu is open.");
+  is(
+    contextMenu.getAttribute("touchmode"),
+    "true",
+    "Context menu is in touchmode."
+  );
+
+  contextMenu.hidePopup();
+
+  popupshown = BrowserTestUtils.waitForEvent(contextMenu, "popupshown");
+  EventUtils.synthesizeMouseAtCenter(target, { type: "contextmenu" });
+  await popupshown;
+
+  is(contextMenu.state, "open", "Context menu is open.");
+  ok(
+    !contextMenu.hasAttribute("touchmode"),
+    "Context menu is not in touchmode."
+  );
+
+  contextMenu.hidePopup();
+}
+
+// Ensure that we can run touch events properly for windows [10]
+add_setup(async function () {
+  let isWindows = AppConstants.isPlatformAndVersionAtLeast("win", "10.0");
+  await SpecialPowers.pushPrefEnv({
+    set: [["apz.test.fails_with_native_injection", isWindows]],
+  });
+});
+
+// Test the content area context menu.
+add_task(async function test_contentarea_contextmenu_touch() {
+  await BrowserTestUtils.withNewTab("about:blank", async function (browser) {
+    let contextMenu = document.getElementById("contentAreaContextMenu");
+    await openAndCheckContextMenu(contextMenu, browser);
+  });
+});
+
+// Test the back and forward buttons.
+add_task(async function test_back_forward_button_contextmenu_touch() {
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  await BrowserTestUtils.withNewTab(
+    "http://example.com",
+    async function (browser) {
+      let contextMenu = document.getElementById("backForwardMenu");
+
+      let backbutton = document.getElementById("back-button");
+      let notDisabled = TestUtils.waitForCondition(
+        () => !backbutton.hasAttribute("disabled")
+      );
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      BrowserTestUtils.loadURIString(browser, "http://example.org");
+      await notDisabled;
+      await openAndCheckContextMenu(contextMenu, backbutton);
+
+      let forwardbutton = document.getElementById("forward-button");
+      notDisabled = TestUtils.waitForCondition(
+        () => !forwardbutton.hasAttribute("disabled")
+      );
+      backbutton.click();
+      await notDisabled;
+      await openAndCheckContextMenu(contextMenu, forwardbutton);
+    }
+  );
+});
+
+// Test the toolbar context menu.
+add_task(async function test_toolbar_contextmenu_touch() {
+  let toolbarContextMenu = document.getElementById("toolbar-context-menu");
+  let target = document.getElementById("PanelUI-menu-button");
+  await openAndCheckContextMenu(toolbarContextMenu, target);
+});
+
+// Test the urlbar input context menu.
+add_task(async function test_urlbar_contextmenu_touch() {
+  let urlbar = document.getElementById("urlbar");
+  let textBox = urlbar.querySelector("moz-input-box");
+  let menu = textBox.menupopup;
+  await openAndCheckContextMenu(menu, textBox);
+});
diff --git a/browser/base/content/test/contextMenu/browser_copy_image_link.js b/browser/base/content/test/contextMenu/browser_copy_image_link.js
new file mode 100644
index 0000000000..4853006a61
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_copy_image_link.js
@@ -0,0 +1,40 @@
+/**
+ * Testcase for bug 1719203
+ * <https://bugzilla.mozilla.org/show_bug.cgi?id=1719203>
+ *
+ * Load firebird.png, redirect it to doggy.png, and verify that "Copy Image
+ * Link" copies firebird.png.
+ */
+
+add_task(async function () {
+  // This URL will redirect to doggy.png.
+  const URL_FIREBIRD =
+    "http://mochi.test:8888/browser/browser/base/content/test/contextMenu/firebird.png";
+
+  await BrowserTestUtils.withNewTab(URL_FIREBIRD, async function (browser) {
+    // Click image to show context menu.
+    let popupShownPromise = BrowserTestUtils.waitForEvent(
+      document,
+      "popupshown"
+    );
+    await BrowserTestUtils.synthesizeMouseAtCenter(
+      "img",
+      { type: "contextmenu", button: 2 },
+      browser
+    );
+    await popupShownPromise;
+
+    await SimpleTest.promiseClipboardChange(URL_FIREBIRD, () => {
+      document.getElementById("context-copyimage").doCommand();
+    });
+
+    // Close context menu.
+    let contextMenu = document.getElementById("contentAreaContextMenu");
+    let popupHiddenPromise = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popuphidden"
+    );
+    contextMenu.hidePopup();
+    await popupHiddenPromise;
+  });
+});
diff --git a/browser/base/content/test/contextMenu/browser_strip_on_share_link.js b/browser/base/content/test/contextMenu/browser_strip_on_share_link.js
new file mode 100644
index 0000000000..ba3fd33caa
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_strip_on_share_link.js
@@ -0,0 +1,151 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+let listService;
+
+let url =
+  "https://example.com/browser/browser/base/content/test/general/dummy_page.html";
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.query_stripping.strip_list", "stripParam"]],
+  });
+
+  // Get the list service so we can wait for it to be fully initialized before running tests.
+  listService = Cc["@mozilla.org/query-stripping-list-service;1"].getService(
+    Ci.nsIURLQueryStrippingListService
+  );
+
+  await listService.testWaitForInit();
+});
+
+/*
+  Tests the strip-on-share feature for in-content links
+ */
+
+// Tests that the link url is properly stripped
+add_task(async function testStrip() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.query_stripping.strip_on_share.enabled", true]],
+  });
+  let strippedURI = "https://www.example.com/?otherParam=1234";
+  await BrowserTestUtils.withNewTab(url, async function (browser) {
+    // Prepare a link
+    await SpecialPowers.spawn(browser, [], async function () {
+      let link = content.document.createElement("a");
+      link.href = "https://www.example.com/?stripParam=1234&otherParam=1234";
+      link.textContent = "link with query param";
+      link.id = "link";
+      content.document.body.appendChild(link);
+    });
+    let contextMenu = document.getElementById("contentAreaContextMenu");
+    // Open the context menu
+    let awaitPopupShown = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popupshown"
+    );
+    await BrowserTestUtils.synthesizeMouseAtCenter(
+      "#link",
+      { type: "contextmenu", button: 2 },
+      browser
+    );
+    await awaitPopupShown;
+    let awaitPopupHidden = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popuphidden"
+    );
+    let stripOnShare = contextMenu.querySelector("#context-stripOnShareLink");
+    Assert.ok(
+      BrowserTestUtils.is_visible(stripOnShare),
+      "Menu item is visible"
+    );
+
+    // Make sure the stripped link will be copied to the clipboard
+    await SimpleTest.promiseClipboardChange(strippedURI, () => {
+      contextMenu.activateItem(stripOnShare);
+    });
+    await awaitPopupHidden;
+  });
+});
+
+// Tests that the menu item does not show if the pref is disabled
+add_task(async function testPrefDisabled() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.query_stripping.strip_on_share.enabled", false]],
+  });
+  await BrowserTestUtils.withNewTab(url, async function (browser) {
+    // Prepare a link
+    await SpecialPowers.spawn(browser, [], async function () {
+      let link = content.document.createElement("a");
+      link.href = "https://www.example.com/?stripParam=1234&otherParam=1234";
+      link.textContent = "link with query param";
+      link.id = "link";
+      content.document.body.appendChild(link);
+    });
+    let contextMenu = document.getElementById("contentAreaContextMenu");
+    // Open the context menu
+    let awaitPopupShown = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popupshown"
+    );
+    await BrowserTestUtils.synthesizeMouseAtCenter(
+      "#link",
+      { type: "contextmenu", button: 2 },
+      browser
+    );
+    await awaitPopupShown;
+    let awaitPopupHidden = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popuphidden"
+    );
+    let stripOnShare = contextMenu.querySelector("#context-stripOnShareLink");
+    Assert.ok(
+      !BrowserTestUtils.is_visible(stripOnShare),
+      "Menu item is not visible"
+    );
+    contextMenu.hidePopup();
+    await awaitPopupHidden;
+  });
+});
+
+// Tests that the menu item does not show if there is nothing to strip
+add_task(async function testUnknownQueryParam() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.query_stripping.strip_on_share.enabled", true]],
+  });
+  await BrowserTestUtils.withNewTab(url, async function (browser) {
+    // Prepare a link
+    await SpecialPowers.spawn(browser, [], async function () {
+      let link = content.document.createElement("a");
+      link.href = "https://www.example.com/?otherParam=1234";
+      link.textContent = "link with unknown query param";
+      link.id = "link";
+      content.document.body.appendChild(link);
+    });
+    let contextMenu = document.getElementById("contentAreaContextMenu");
+    // open the context menu
+    let awaitPopupShown = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popupshown"
+    );
+    await BrowserTestUtils.synthesizeMouseAtCenter(
+      "#link",
+      { type: "contextmenu", button: 2 },
+      browser
+    );
+    await awaitPopupShown;
+    let awaitPopupHidden = BrowserTestUtils.waitForEvent(
+      contextMenu,
+      "popuphidden"
+    );
+    let stripOnShare = contextMenu.querySelector("#context-stripOnShareLink");
+    Assert.ok(
+      !BrowserTestUtils.is_visible(stripOnShare),
+      "Menu item is not visible"
+    );
+    contextMenu.hidePopup();
+    await awaitPopupHidden;
+  });
+});
diff --git a/browser/base/content/test/contextMenu/browser_utilityOverlay.js b/browser/base/content/test/contextMenu/browser_utilityOverlay.js
new file mode 100644
index 0000000000..2a3b881c92
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_utilityOverlay.js
@@ -0,0 +1,78 @@
+/* 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/. */
+
+add_task(async function test_eventMatchesKey() {
+  let eventMatchResult;
+  let key;
+  let checkEvent = function (e) {
+    e.stopPropagation();
+    e.preventDefault();
+    eventMatchResult = eventMatchesKey(e, key);
+  };
+  document.addEventListener("keypress", checkEvent);
+
+  try {
+    key = document.createXULElement("key");
+    let keyset = document.getElementById("mainKeyset");
+    key.setAttribute("key", "t");
+    key.setAttribute("modifiers", "accel");
+    keyset.appendChild(key);
+    EventUtils.synthesizeKey("t", { accelKey: true });
+    is(eventMatchResult, true, "eventMatchesKey: one modifier");
+    keyset.removeChild(key);
+
+    key = document.createXULElement("key");
+    key.setAttribute("key", "g");
+    key.setAttribute("modifiers", "accel,shift");
+    keyset.appendChild(key);
+    EventUtils.synthesizeKey("g", { accelKey: true, shiftKey: true });
+    is(eventMatchResult, true, "eventMatchesKey: combination modifiers");
+    keyset.removeChild(key);
+
+    key = document.createXULElement("key");
+    key.setAttribute("key", "w");
+    key.setAttribute("modifiers", "accel");
+    keyset.appendChild(key);
+    EventUtils.synthesizeKey("f", { accelKey: true });
+    is(eventMatchResult, false, "eventMatchesKey: mismatch keys");
+    keyset.removeChild(key);
+
+    key = document.createXULElement("key");
+    key.setAttribute("keycode", "VK_DELETE");
+    keyset.appendChild(key);
+    EventUtils.synthesizeKey("VK_DELETE", { accelKey: true });
+    is(eventMatchResult, false, "eventMatchesKey: mismatch modifiers");
+    keyset.removeChild(key);
+  } finally {
+    // Make sure to remove the event listener so future tests don't
+    // fail when they simulate key presses.
+    document.removeEventListener("keypress", checkEvent);
+  }
+});
+
+add_task(async function test_getTargetWindow() {
+  is(URILoadingHelper.getTargetWindow(window), window, "got top window");
+});
+
+add_task(async function test_openUILink() {
+  const kURL = "https://example.org/";
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "about:blank"
+  );
+  let loadPromise = BrowserTestUtils.browserLoaded(
+    tab.linkedBrowser,
+    false,
+    kURL
+  );
+
+  openUILink(kURL, null, {
+    triggeringPrincipal: Services.scriptSecurityManager.createNullPrincipal({}),
+  }); // defaults to "current"
+
+  await loadPromise;
+
+  is(tab.linkedBrowser.currentURI.spec, kURL, "example.org loaded");
+  gBrowser.removeCurrentTab();
+});
diff --git a/browser/base/content/test/contextMenu/browser_utilityOverlayPrincipal.js b/browser/base/content/test/contextMenu/browser_utilityOverlayPrincipal.js
new file mode 100644
index 0000000000..5b8252b973
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_utilityOverlayPrincipal.js
@@ -0,0 +1,72 @@
+/* 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/. */
+
+const gTests = [test_openUILink_checkPrincipal];
+
+function test() {
+  waitForExplicitFinish();
+  executeSoon(runNextTest);
+}
+
+function runNextTest() {
+  if (gTests.length) {
+    let testFun = gTests.shift();
+    info("Running " + testFun.name);
+    testFun();
+  } else {
+    finish();
+  }
+}
+
+function test_openUILink_checkPrincipal() {
+  let tab = (gBrowser.selectedTab = BrowserTestUtils.addTab(
+    gBrowser,
+    // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+    "http://example.com/"
+  )); // remote tab
+  BrowserTestUtils.browserLoaded(tab.linkedBrowser).then(async function () {
+    is(
+      tab.linkedBrowser.currentURI.spec,
+      // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+      "http://example.com/",
+      "example.com loaded"
+    );
+
+    await SpecialPowers.spawn(tab.linkedBrowser, [], function () {
+      let channel = content.docShell.currentDocumentChannel;
+
+      const loadingPrincipal = channel.loadInfo.loadingPrincipal;
+      is(loadingPrincipal, null, "sanity: correct loadingPrincipal");
+      const triggeringPrincipal = channel.loadInfo.triggeringPrincipal;
+      ok(
+        triggeringPrincipal.isSystemPrincipal,
+        "sanity: correct triggeringPrincipal"
+      );
+      const principalToInherit = channel.loadInfo.principalToInherit;
+      ok(
+        principalToInherit.isNullPrincipal,
+        "sanity: correct principalToInherit"
+      );
+      ok(
+        content.document.nodePrincipal.isContentPrincipal,
+        "sanity: correct doc.nodePrincipal"
+      );
+      is(
+        content.document.nodePrincipal.asciiSpec,
+        // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+        "http://example.com/",
+        "sanity: correct doc.nodePrincipal URL"
+      );
+    });
+
+    gBrowser.removeCurrentTab();
+    runNextTest();
+  });
+
+  // Ensure we get the correct default of "allowInheritPrincipal: false" from openUILink
+  // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+  openUILink("http://example.com", null, {
+    triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal({}),
+  }); // defaults to "current"
+}
diff --git a/browser/base/content/test/contextMenu/browser_view_image.js b/browser/base/content/test/contextMenu/browser_view_image.js
new file mode 100644
index 0000000000..485fdf3fb2
--- /dev/null
+++ b/browser/base/content/test/contextMenu/browser_view_image.js
@@ -0,0 +1,197 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const chrome_base = getRootDirectory(gTestPath);
+
+/* import-globals-from contextmenu_common.js */
+Services.scriptloader.loadSubScript(
+  chrome_base + "contextmenu_common.js",
+  this
+);
+const http_base = chrome_base.replace(
+  "chrome://mochitests/content",
+  "https://example.com"
+);
+
+async function test_view_image_works({ page, selector, urlChecker }) {
+  let mainURL = http_base + page;
+  let accel = AppConstants.platform == "macosx" ? "metaKey" : "ctrlKey";
+  let tests = {
+    tab: {
+      modifiers: { [accel]: true },
+      async loadedPromise() {
+        return BrowserTestUtils.waitForNewTab(gBrowser, urlChecker, true).then(
+          t => t.linkedBrowser
+        );
+      },
+      cleanup(browser) {
+        BrowserTestUtils.removeTab(gBrowser.getTabForBrowser(browser));
+      },
+    },
+    window: {
+      modifiers: { shiftKey: true },
+      async loadedPromise() {
+        // Unfortunately we can't predict the URL so can't just pass that to waitForNewWindow
+        let w = await BrowserTestUtils.waitForNewWindow();
+        let browser = w.gBrowser.selectedBrowser;
+        let getCx = () => browser.browsingContext;
+        await TestUtils.waitForCondition(
+          () =>
+            getCx() && urlChecker(getCx().currentWindowGlobal.documentURI.spec)
+        );
+        await SpecialPowers.spawn(browser, [], () => {
+          return ContentTaskUtils.waitForCondition(
+            () => content.document.readyState == "complete"
+          );
+        });
+        return browser;
+      },
+      async cleanup(browser) {
+        return BrowserTestUtils.closeWindow(browser.ownerGlobal);
+      },
+    },
+    tab_default: {
+      modifiers: {},
+      async loadedPromise() {
+        return BrowserTestUtils.waitForNewTab(gBrowser, urlChecker, true).then(
+          t => {
+            is(t.selected, false, "Tab should not be selected.");
+            return t.linkedBrowser;
+          }
+        );
+      },
+      cleanup(browser) {
+        is(gBrowser.tabs.length, 3, "number of tabs");
+        BrowserTestUtils.removeTab(gBrowser.getTabForBrowser(browser));
+      },
+    },
+    tab_default_flip_bg_pref: {
+      prefs: [["browser.tabs.loadInBackground", false]],
+      modifiers: {},
+      async loadedPromise() {
+        return BrowserTestUtils.waitForNewTab(gBrowser, urlChecker, true).then(
+          t => {
+            is(t.selected, true, "Tab should be selected with pref flipped.");
+            return t.linkedBrowser;
+          }
+        );
+      },
+      cleanup(browser) {
+        is(gBrowser.tabs.length, 3, "number of tabs");
+        BrowserTestUtils.removeTab(gBrowser.getTabForBrowser(browser));
+      },
+    },
+  };
+  await BrowserTestUtils.withNewTab(mainURL, async browser => {
+    await SpecialPowers.spawn(browser, [], () => {
+      return ContentTaskUtils.waitForCondition(
+        () => !content.document.documentElement.classList.contains("wait")
+      );
+    });
+    for (let [testLabel, test] of Object.entries(tests)) {
+      if (test.prefs) {
+        await SpecialPowers.pushPrefEnv({ set: test.prefs });
+      }
+      let contextMenu = document.getElementById("contentAreaContextMenu");
+      is(
+        contextMenu.state,
+        "closed",
+        `${testLabel} - checking if popup is closed`
+      );
+      let promisePopupShown = BrowserTestUtils.waitForEvent(
+        contextMenu,
+        "popupshown"
+      );
+      await BrowserTestUtils.synthesizeMouse(
+        selector,
+        2,
+        2,
+        { type: "contextmenu", button: 2 },
+        browser
+      );
+      await promisePopupShown;
+      info(`${testLabel} - Popup Shown`);
+      let promisePopupHidden = BrowserTestUtils.waitForEvent(
+        contextMenu,
+        "popuphidden"
+      );
+      let browserPromise = test.loadedPromise();
+      contextMenu.activateItem(
+        document.getElementById("context-viewimage"),
+        test.modifiers
+      );
+      await promisePopupHidden;
+
+      let newBrowser = await browserPromise;
+      let { documentURI } = newBrowser.browsingContext.currentWindowGlobal;
+      if (documentURI.spec.startsWith("data:image/svg")) {
+        await SpecialPowers.spawn(newBrowser, [testLabel], msgPrefix => {
+          let svgEl = content.document.querySelector("svg");
+          ok(svgEl, `${msgPrefix} - should have loaded SVG.`);
+          is(svgEl.height.baseVal.value, 500, `${msgPrefix} - SVG has height`);
+          is(svgEl.width.baseVal.value, 500, `${msgPrefix} - SVG has height`);
+        });
+      } else {
+        await SpecialPowers.spawn(newBrowser, [testLabel], msgPrefix => {
+          let img = content.document.querySelector("img");
+          ok(
+            img instanceof Ci.nsIImageLoadingContent,
+            `${msgPrefix} - Image should have loaded content.`
+          );
+          const request = img.getRequest(
+            Ci.nsIImageLoadingContent.CURRENT_REQUEST
+          );
+          ok(
+            request.imageStatus & request.STATUS_LOAD_COMPLETE,
+            `${msgPrefix} - Should have loaded image.`
+          );
+        });
+      }
+      await test.cleanup(newBrowser);
+      if (test.prefs) {
+        await SpecialPowers.popPrefEnv();
+      }
+    }
+  });
+}
+
+/**
+ * Verify that the 'view image' context menu in a new tab for a canvas works,
+ * when opened in a new tab, a new window, or in the same tab.
+ */
+add_task(async function test_view_image_canvas_works() {
+  await test_view_image_works({
+    page: "subtst_contextmenu.html",
+    selector: "#test-canvas",
+    urlChecker: url => url.startsWith("blob:"),
+  });
+});
+
+/**
+ * Test for https://bugzilla.mozilla.org/show_bug.cgi?id=1625786
+ */
+add_task(async function test_view_image_revoked_cached_blob() {
+  await test_view_image_works({
+    page: "test_view_image_revoked_cached_blob.html",
+    selector: "#second",
+    urlChecker: url => url.startsWith("blob:"),
+  });
+});
+
+/**
+ * Test for https://bugzilla.mozilla.org/show_bug.cgi?id=1738190
+ * Inline SVG data URIs as a background image should also open.
+ */
+add_task(async function test_view_image_inline_svg_bgimage() {
+  await SpecialPowers.pushPrefEnv({
+    // This is the default but we turn it off for unit tests.
+    set: [["security.data_uri.block_toplevel_data_uri_navigations", true]],
+  });
+  await test_view_image_works({
+    page: "test_view_image_inline_svg.html",
+    selector: "body",
+    urlChecker: url => url.startsWith("data:"),
+  });
+});
diff --git a/browser/base/content/test/contextMenu/bug1798178.sjs b/browser/base/content/test/contextMenu/bug1798178.sjs
new file mode 100644
index 0000000000..790dc2bee5
--- /dev/null
+++ b/browser/base/content/test/contextMenu/bug1798178.sjs
@@ -0,0 +1,9 @@
+/* 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/. */
+
+function handleRequest(request, response) {
+  response.setHeader("Content-Type", "text/plain", false);
+  response.setHeader("X-Content-Type-Options", "nosniff");
+  response.write("Hello");
+}
diff --git a/browser/base/content/test/contextMenu/contextmenu_common.js b/browser/base/content/test/contextMenu/contextmenu_common.js
new file mode 100644
index 0000000000..ac61aa2a3a
--- /dev/null
+++ b/browser/base/content/test/contextMenu/contextmenu_common.js
@@ -0,0 +1,437 @@
+// This file expects contextMenu to be defined in the scope it is loaded into.
+/* global contextMenu:true */
+
+var lastElement;
+const FRAME_OS_PID = "context-frameOsPid";
+
+function openContextMenuFor(element, shiftkey, waitForSpellCheck) {
+  // Context menu should be closed before we open it again.
+  is(
+    SpecialPowers.wrap(contextMenu).state,
+    "closed",
+    "checking if popup is closed"
+  );
+
+  if (lastElement) {
+    lastElement.blur();
+  }
+  element.focus();
+
+  // Some elements need time to focus and spellcheck before any tests are
+  // run on them.
+  function actuallyOpenContextMenuFor() {
+    lastElement = element;
+    var eventDetails = { type: "contextmenu", button: 2, shiftKey: shiftkey };
+    synthesizeMouse(element, 2, 2, eventDetails, element.ownerGlobal);
+  }
+
+  if (waitForSpellCheck) {
+    var { onSpellCheck } = SpecialPowers.ChromeUtils.importESModule(
+      "resource://testing-common/AsyncSpellCheckTestHelper.sys.mjs"
+    );
+    onSpellCheck(element, actuallyOpenContextMenuFor);
+  } else {
+    actuallyOpenContextMenuFor();
+  }
+}
+
+function closeContextMenu() {
+  contextMenu.hidePopup();
+}
+
+function getVisibleMenuItems(aMenu, aData) {
+  var items = [];
+  var accessKeys = {};
+  for (var i = 0; i < aMenu.children.length; i++) {
+    var item = aMenu.children[i];
+    if (item.hidden) {
+      continue;
+    }
+
+    var key = item.accessKey;
+    if (key) {
+      key = key.toLowerCase();
+    }
+
+    if (item.nodeName == "menuitem") {
+      var isGenerated =
+        item.classList.contains("spell-suggestion") ||
+        item.classList.contains("sendtab-target");
+      if (isGenerated) {
+        is(item.id, "", "child menuitem #" + i + " is generated");
+      } else {
+        ok(item.id, "child menuitem #" + i + " has an ID");
+      }
+      var label = item.getAttribute("label");
+      ok(label.length, "menuitem " + item.id + " has a label");
+      if (isGenerated) {
+        is(key, "", "Generated items shouldn't have an access key");
+        items.push("*" + label);
+      } else if (
+        item.id.indexOf("spell-check-dictionary-") != 0 &&
+        item.id != "spell-no-suggestions" &&
+        item.id != "spell-add-dictionaries-main" &&
+        item.id != "context-savelinktopocket" &&
+        item.id != "fill-login-no-logins" &&
+        // Inspect accessibility properties does not have an access key. See
+        // bug 1630717 for more details.
+        item.id != "context-inspect-a11y" &&
+        !item.id.includes("context-media-playbackrate")
+      ) {
+        if (item.id != FRAME_OS_PID) {
+          ok(key, "menuitem " + item.id + " has an access key");
+        }
+        if (accessKeys[key]) {
+          ok(
+            false,
+            "menuitem " + item.id + " has same accesskey as " + accessKeys[key]
+          );
+        } else {
+          accessKeys[key] = item.id;
+        }
+      }
+      if (!isGenerated) {
+        items.push(item.id);
+      }
+      items.push(!item.disabled);
+    } else if (item.nodeName == "menuseparator") {
+      ok(true, "--- seperator id is " + item.id);
+      items.push("---");
+      items.push(null);
+    } else if (item.nodeName == "menu") {
+      ok(item.id, "child menu #" + i + " has an ID");
+      ok(key, "menu has an access key");
+      if (accessKeys[key]) {
+        ok(
+          false,
+          "menu " + item.id + " has same accesskey as " + accessKeys[key]
+        );
+      } else {
+        accessKeys[key] = item.id;
+      }
+      items.push(item.id);
+      items.push(!item.disabled);
+      // Add a dummy item so that the indexes in checkMenu are the same
+      // for expectedItems and actualItems.
+      items.push([]);
+      items.push(null);
+    } else if (item.nodeName == "menugroup") {
+      ok(item.id, "child menugroup #" + i + " has an ID");
+      items.push(item.id);
+      items.push(!item.disabled);
+      var menugroupChildren = [];
+      for (var child of item.children) {
+        if (child.hidden) {
+          continue;
+        }
+
+        menugroupChildren.push([child.id, !child.disabled]);
+      }
+      items.push(menugroupChildren);
+      items.push(null);
+    } else {
+      ok(
+        false,
+        "child #" +
+          i +
+          " of menu ID " +
+          aMenu.id +
+          " has an unknown type (" +
+          item.nodeName +
+          ")"
+      );
+    }
+  }
+  return items;
+}
+
+function checkContextMenu(expectedItems) {
+  is(contextMenu.state, "open", "checking if popup is open");
+  var data = { generatedSubmenuId: 1 };
+  checkMenu(contextMenu, expectedItems, data);
+}
+
+function checkMenuItem(
+  actualItem,
+  actualEnabled,
+  expectedItem,
+  expectedEnabled,
+  index
+) {
+  is(
+    `${actualItem}`,
+    expectedItem,
+    "checking item #" + index / 2 + " (" + expectedItem + ") name"
+  );
+
+  if (
+    (typeof expectedEnabled == "object" && expectedEnabled != null) ||
+    (typeof actualEnabled == "object" && actualEnabled != null)
+  ) {
+    ok(!(actualEnabled == null), "actualEnabled is not null");
+    ok(!(expectedEnabled == null), "expectedEnabled is not null");
+    is(typeof actualEnabled, typeof expectedEnabled, "checking types");
+
+    if (
+      typeof actualEnabled != typeof expectedEnabled ||
+      actualEnabled == null ||
+      expectedEnabled == null
+    ) {
+      return;
+    }
+
+    is(
+      actualEnabled.type,
+      expectedEnabled.type,
+      "checking item #" + index / 2 + " (" + expectedItem + ") type attr value"
+    );
+    var icon = actualEnabled.icon;
+    if (icon) {
+      var tmp = "";
+      var j = icon.length - 1;
+      while (j && icon[j] != "/") {
+        tmp = icon[j--] + tmp;
+      }
+      icon = tmp;
+    }
+    is(
+      icon,
+      expectedEnabled.icon,
+      "checking item #" + index / 2 + " (" + expectedItem + ") icon attr value"
+    );
+    is(
+      actualEnabled.checked,
+      expectedEnabled.checked,
+      "checking item #" + index / 2 + " (" + expectedItem + ") has checked attr"
+    );
+    is(
+      actualEnabled.disabled,
+      expectedEnabled.disabled,
+      "checking item #" +
+        index / 2 +
+        " (" +
+        expectedItem +
+        ") has disabled attr"
+    );
+  } else if (expectedEnabled != null) {
+    is(
+      actualEnabled,
+      expectedEnabled,
+      "checking item #" + index / 2 + " (" + expectedItem + ") enabled state"
+    );
+  }
+}
+
+/*
+ * checkMenu - checks to see if the specified <menupopup> contains the
+ * expected items and state.
+ * expectedItems is a array of (1) item IDs and (2) a boolean specifying if
+ * the item is enabled or not (or null to ignore it). Submenus can be checked
+ * by providing a nested array entry after the expected <menu> ID.
+ * For example: ["blah", true,              // item enabled
+ *               "submenu", null,           // submenu
+ *                   ["sub1", true,         // submenu contents
+ *                    "sub2", false], null, // submenu contents
+ *               "lol", false]              // item disabled
+ *
+ */
+function checkMenu(menu, expectedItems, data) {
+  var actualItems = getVisibleMenuItems(menu, data);
+  // ok(false, "Items are: " + actualItems);
+  for (var i = 0; i < expectedItems.length; i += 2) {
+    var actualItem = actualItems[i];
+    var actualEnabled = actualItems[i + 1];
+    var expectedItem = expectedItems[i];
+    var expectedEnabled = expectedItems[i + 1];
+    if (expectedItem instanceof Array) {
+      ok(true, "Checking submenu/menugroup...");
+      var previousId = expectedItems[i - 2]; // The last item was the menu ID.
+      var previousItem = menu.getElementsByAttribute("id", previousId)[0];
+      ok(
+        previousItem,
+        (previousItem ? previousItem.nodeName : "item") +
+          " with previous id (" +
+          previousId +
+          ") found"
+      );
+      if (previousItem && previousItem.nodeName == "menu") {
+        ok(previousItem, "got a submenu element of id='" + previousId + "'");
+        is(
+          previousItem.nodeName,
+          "menu",
+          "submenu element of id='" + previousId + "' has expected nodeName"
+        );
+        checkMenu(previousItem.menupopup, expectedItem, data, i);
+      } else if (previousItem && previousItem.nodeName == "menugroup") {
+        ok(expectedItem.length, "menugroup must not be empty");
+        for (var j = 0; j < expectedItem.length / 2; j++) {
+          checkMenuItem(
+            actualItems[i][j][0],
+            actualItems[i][j][1],
+            expectedItem[j * 2],
+            expectedItem[j * 2 + 1],
+            i + j * 2
+          );
+        }
+        i += j;
+      } else {
+        ok(false, "previous item is not a menu or menugroup");
+      }
+    } else {
+      checkMenuItem(
+        actualItem,
+        actualEnabled,
+        expectedItem,
+        expectedEnabled,
+        i
+      );
+    }
+  }
+  // Could find unexpected extra items at the end...
+  is(
+    actualItems.length,
+    expectedItems.length,
+    "checking expected number of menu entries"
+  );
+}
+
+let lastElementSelector = null;
+/**
+ * Right-clicks on the element that matches `selector` and checks the
+ * context menu that appears against the `menuItems` array.
+ *
+ * @param {String} selector
+ *        A selector passed to querySelector to find
+ *        the element that will be referenced.
+ * @param {Array} menuItems
+ *        An array of menuitem ids and their associated enabled state. A state
+ *        of null means that it will be ignored. Ids of '---' are used for
+ *        menuseparators.
+ * @param {Object} options, optional
+ *        skipFocusChange: don't move focus to the element before test, useful
+ *                         if you want to delay spell-check initialization
+ *        offsetX: horizontal mouse offset from the top-left corner of
+ *                 the element, optional
+ *        offsetY: vertical mouse offset from the top-left corner of the
+ *                 element, optional
+ *        centered: if true, mouse position is centered in element, defaults
+ *                  to true if offsetX and offsetY are not provided
+ *        waitForSpellCheck: wait until spellcheck is initialized before
+ *                           starting test
+ *        preCheckContextMenuFn: callback to run before opening menu
+ *        onContextMenuShown: callback to run when the context menu is shown
+ *        postCheckContextMenuFn: callback to run after opening menu
+ *        keepMenuOpen: if true, we do not call hidePopup, the consumer is
+ *                      responsible for calling it.
+ * @return {Promise} resolved after the test finishes
+ */
+async function test_contextmenu(selector, menuItems, options = {}) {
+  contextMenu = document.getElementById("contentAreaContextMenu");
+  is(contextMenu.state, "closed", "checking if popup is closed");
+
+  // Default to centered if no positioning is defined.
+  if (!options.offsetX && !options.offsetY) {
+    options.centered = true;
+  }
+
+  if (!options.skipFocusChange) {
+    await SpecialPowers.spawn(
+      gBrowser.selectedBrowser,
+      [[lastElementSelector, selector]],
+      async function ([contentLastElementSelector, contentSelector]) {
+        if (contentLastElementSelector) {
+          let contentLastElement = content.document.querySelector(
+            contentLastElementSelector
+          );
+          contentLastElement.blur();
+        }
+        let element = content.document.querySelector(contentSelector);
+        element.focus();
+      }
+    );
+    lastElementSelector = selector;
+    info(`Moved focus to ${selector}`);
+  }
+
+  if (options.preCheckContextMenuFn) {
+    await options.preCheckContextMenuFn();
+    info("Completed preCheckContextMenuFn");
+  }
+
+  if (options.waitForSpellCheck) {
+    info("Waiting for spell check");
+    await SpecialPowers.spawn(
+      gBrowser.selectedBrowser,
+      [selector],
+      async function (contentSelector) {
+        let { onSpellCheck } = ChromeUtils.importESModule(
+          "resource://testing-common/AsyncSpellCheckTestHelper.sys.mjs"
+        );
+        let element = content.document.querySelector(contentSelector);
+        await new Promise(resolve => onSpellCheck(element, resolve));
+        info("Spell check running");
+      }
+    );
+  }
+
+  let awaitPopupShown = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popupshown"
+  );
+  await BrowserTestUtils.synthesizeMouse(
+    selector,
+    options.offsetX || 0,
+    options.offsetY || 0,
+    {
+      type: "contextmenu",
+      button: 2,
+      shiftkey: options.shiftkey,
+      centered: options.centered,
+    },
+    gBrowser.selectedBrowser
+  );
+  await awaitPopupShown;
+  info("Popup Shown");
+
+  if (options.onContextMenuShown) {
+    await options.onContextMenuShown();
+    info("Completed onContextMenuShown");
+  }
+
+  if (menuItems) {
+    if (Services.prefs.getBoolPref("devtools.inspector.enabled", true)) {
+      const inspectItems =
+        menuItems.includes("context-viewsource") ||
+        menuItems.includes("context-viewpartialsource-selection")
+          ? []
+          : ["---", null];
+      if (
+        Services.prefs.getBoolPref("devtools.accessibility.enabled", true) &&
+        (Services.prefs.getBoolPref("devtools.everOpened", false) ||
+          Services.prefs.getIntPref("devtools.selfxss.count", 0) > 0)
+      ) {
+        inspectItems.push("context-inspect-a11y", true);
+      }
+      inspectItems.push("context-inspect", true);
+
+      menuItems = menuItems.concat(inspectItems);
+    }
+
+    checkContextMenu(menuItems);
+  }
+
+  let awaitPopupHidden = BrowserTestUtils.waitForEvent(
+    contextMenu,
+    "popuphidden"
+  );
+
+  if (options.postCheckContextMenuFn) {
+    await options.postCheckContextMenuFn();
+    info("Completed postCheckContextMenuFn");
+  }
+
+  if (!options.keepMenuOpen) {
+    contextMenu.hidePopup();
+    await awaitPopupHidden;
+  }
+}
diff --git a/browser/base/content/test/contextMenu/ctxmenu-image.png b/browser/base/content/test/contextMenu/ctxmenu-image.png
new file mode 100644
index 0000000000..4c3be50847
Binary files /dev/null and b/browser/base/content/test/contextMenu/ctxmenu-image.png differ
diff --git a/browser/base/content/test/contextMenu/doggy.png b/browser/base/content/test/contextMenu/doggy.png
new file mode 100644
index 0000000000..73632d3229
Binary files /dev/null and b/browser/base/content/test/contextMenu/doggy.png differ
diff --git a/browser/base/content/test/contextMenu/file_bug1798178.html b/browser/base/content/test/contextMenu/file_bug1798178.html
new file mode 100644
index 0000000000..49e0092a4f
--- /dev/null
+++ b/browser/base/content/test/contextMenu/file_bug1798178.html
@@ -0,0 +1,5 @@
+<html>
+  <body>
+    <a href="https://example.org/browser/browser/base/content/test/contextMenu/bug1798178.sjs">Download Link</a>
+  </body>
+</html>
diff --git a/browser/base/content/test/contextMenu/firebird.png b/browser/base/content/test/contextMenu/firebird.png
new file mode 100644
index 0000000000..de5c22f8ce
Binary files /dev/null and b/browser/base/content/test/contextMenu/firebird.png differ
diff --git a/browser/base/content/test/contextMenu/firebird.png^headers^ b/browser/base/content/test/contextMenu/firebird.png^headers^
new file mode 100644
index 0000000000..2918fdbe5f
--- /dev/null
+++ b/browser/base/content/test/contextMenu/firebird.png^headers^
@@ -0,0 +1,2 @@
+HTTP 302 Found
+Location: doggy.png
diff --git a/browser/base/content/test/contextMenu/subtst_contextmenu.html b/browser/base/content/test/contextMenu/subtst_contextmenu.html
new file mode 100644
index 0000000000..2c263fbce4
--- /dev/null
+++ b/browser/base/content/test/contextMenu/subtst_contextmenu.html
@@ -0,0 +1,61 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Subtest for browser context menu</title>
+</head>
+<body>
+Browser context menu subtest.
+
+<div id="test-text">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</div>
+<a id="test-link" href="http://mozilla.com">Click the monkey!</a>
+<div id="shadow-host"></div>
+<a href="http://mozilla.com" style="display: block">
+  <span id="shadow-host-in-link"></span>
+</a>
+<script>
+document.getElementById("shadow-host").attachShadow({ mode: "closed" }).innerHTML =
+  "<a href='http://mozilla.com'>Click the monkey!</a>";
+document.getElementById("shadow-host-in-link").attachShadow({ mode: "closed" }).innerHTML =
+  "<span>Click the monkey!</span>";
+</script>
+<a id="test-mailto" href="mailto:codemonkey@mozilla.com">Mail the monkey!</a><br>
+<a id="test-tel" href="tel:555-123-4567">Call random number!</a><br>
+<input id="test-input"><br>
+<img id="test-image" src="ctxmenu-image.png">
+<svg>
+  <image id="test-svg-image" href="ctxmenu-image.png"/>
+</svg>
+<canvas id="test-canvas" width="100" height="100" style="background-color: blue"></canvas>
+<video controls id="test-video-ok"  src="video.ogg" width="100" height="100" style="background-color: green"></video>
+<video id="test-audio-in-video" src="audio.ogg" width="100" height="100" style="background-color: red"></video>
+<video controls id="test-video-bad" src="bogus.duh" width="100" height="100" style="background-color: orange"></video>
+<video controls id="test-video-bad2" width="100" height="100" style="background-color: yellow">
+  <source src="bogus.duh" type="video/durrrr;">
+</video>
+<iframe id="test-iframe" width="98"  height="98" style="border: 1px solid black"></iframe>
+<iframe id="test-video-in-iframe" src="video.ogg" width="98" height="98" style="border: 1px solid black"></iframe>
+<iframe id="test-audio-in-iframe" src="audio.ogg" width="98" height="98" style="border: 1px solid black"></iframe>
+<iframe id="test-image-in-iframe" src="ctxmenu-image.png" width="98" height="98" style="border: 1px solid black"></iframe>
+<iframe id="test-pdf-viewer-in-frame" src="file_pdfjs_test.pdf" width="100" height="100" style="border: 1px solid black"></iframe>
+<textarea id="test-textarea">chssseesbbbie</textarea> <!-- a weird word which generates only one suggestion -->
+<div id="test-contenteditable" contenteditable="true">chssseefsbbbie</div> <!-- a more weird word which generates no suggestions -->
+<div id="test-contenteditable-spellcheck-false" contenteditable="true" spellcheck="false">test</div> <!-- No Check Spelling menu item -->
+<div id="test-dom-full-screen">DOM full screen FTW</div>
+<div id="test-select-text">Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</div>
+<div id="test-select-text-link">http://mozilla.com</div>
+<a id="test-image-link" href="#"><img src="ctxmenu-image.png"></a>
+<input id="test-select-input-text" type="text" value="input">
+<input id="test-select-input-text-type-password" type="password" value="password">
+<img id="test-longdesc" src="ctxmenu-image.png" longdesc="http://www.mozilla.org"></embed>
+<iframe id="test-srcdoc" width="98"  height="98" srcdoc="Hello World" style="border: 1px solid black"></iframe>
+<svg id="svg-with-link" width=10 height=10><a xlink:href="http://example.com/"><circle cx="50%" cy="50%" r="50%" fill="blue"/></a></svg>
+<svg id="svg-with-link2" width=10 height=10><a xlink:href="http://example.com/" xlink:type="simple"><circle cx="50%" cy="50%" r="50%" fill="green"/></a></svg>
+<svg id="svg-with-link3" width=10 height=10><a href="http://example.com/"><circle cx="50%" cy="50%" r="50%" fill="red"/></a></svg>
+<svg id="svg-with-relative-link" width=10 height=10><a xlink:href="/"><circle cx="50%" cy="50%" r="50%" fill="blue"/></a></svg>
+<svg id="svg-with-relative-link2" width=10 height=10><a xlink:href="/" xlink:type="simple"><circle cx="50%" cy="50%" r="50%" fill="green"/></a></svg>
+<svg id="svg-with-relative-link3" width=10 height=10><a href="/"><circle cx="50%" cy="50%" r="50%" fill="red"/></a></svg>
+<span id="test-background-image" style="background-image: url('ctxmenu-image.png')">Text with background
+  <a id='test-background-image-link' href="about:blank">image</a>
+  .
+</span></body>
+</html>
diff --git a/browser/base/content/test/contextMenu/subtst_contextmenu_input.html b/browser/base/content/test/contextMenu/subtst_contextmenu_input.html
new file mode 100644
index 0000000000..a34cbbe122
--- /dev/null
+++ b/browser/base/content/test/contextMenu/subtst_contextmenu_input.html
@@ -0,0 +1,30 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Subtest for browser context menu</title>
+</head>
+<body>
+  Browser context menu subtest.
+  <input id="input_text">
+  <input id="input_spellcheck_no_value">
+  <input id="input_spellcheck_incorrect" spellcheck="true" value="prodkjfgigrty">
+  <input id="input_spellcheck_correct" spellcheck="true" value="foo">
+  <input id="input_disabled" disabled="true">
+  <input id="input_password">
+  <input id="input_email" type="email">
+  <input id="input_tel" type="tel">
+  <input id="input_url" type="url">
+  <input id="input_number" type="number">
+  <input id="input_date" type="date">
+  <input id="input_time" type="time">
+  <input id="input_color" type="color">
+  <input id="input_range" type="range">
+  <input id="input_search" type="search">
+  <input id="input_datetime" type="datetime">
+  <input id="input_month" type="month">
+  <input id="input_week" type="week">
+  <input id="input_datetime-local" type="datetime-local">
+  <input id="input_readonly" readonly="true">
+  <input id="input_username" name="username">
+</body>
+</html>
diff --git a/browser/base/content/test/contextMenu/subtst_contextmenu_keyword.html b/browser/base/content/test/contextMenu/subtst_contextmenu_keyword.html
new file mode 100644
index 0000000000..a0f2b0584f
--- /dev/null
+++ b/browser/base/content/test/contextMenu/subtst_contextmenu_keyword.html
@@ -0,0 +1,17 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Subtest for browser context menu</title>
+</head>
+<body>
+  Browser context menu subtest.
+  <input id="input_text_no_form">
+  <form id="form_with_password">
+    <input id="login_text">
+    <input id="input_password" type="password">
+  </form>
+  <form id="form_without_password">
+    <input id="search_text">
+  </form>
+</body>
+</html>
diff --git a/browser/base/content/test/contextMenu/subtst_contextmenu_webext.html b/browser/base/content/test/contextMenu/subtst_contextmenu_webext.html
new file mode 100644
index 0000000000..ac3b5415dd
--- /dev/null
+++ b/browser/base/content/test/contextMenu/subtst_contextmenu_webext.html
@@ -0,0 +1,12 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Subtest for browser context menu</title>
+</head>
+<body>
+  Browser context menu subtest.
+  <a href="moz-extension://foo-bar/tab.html" id="link">Link to an extension resource</a>
+  <video src="moz-extension://foo-bar/video.ogg" id="video"></video>
+</body>
+</html>
diff --git a/browser/base/content/test/contextMenu/subtst_contextmenu_xul.xhtml b/browser/base/content/test/contextMenu/subtst_contextmenu_xul.xhtml
new file mode 100644
index 0000000000..c8ff92a76c
--- /dev/null
+++ b/browser/base/content/test/contextMenu/subtst_contextmenu_xul.xhtml
@@ -0,0 +1,9 @@
+<?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/. -->
+
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        xmlns:html="http://www.w3.org/1999/xhtml">
+  <label id="test-xul-text-link-label" is="text-link" value="XUL text-link label" href="https://www.mozilla.com"/>
+</window>
diff --git a/browser/base/content/test/contextMenu/test_contextmenu_iframe.html b/browser/base/content/test/contextMenu/test_contextmenu_iframe.html
new file mode 100644
index 0000000000..cf5b871ecd
--- /dev/null
+++ b/browser/base/content/test/contextMenu/test_contextmenu_iframe.html
@@ -0,0 +1,11 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Subtest for browser context menu iframes</title>
+</head>
+<body>
+Browser context menu iframe subtest.
+
+<iframe src="https://example.com/" id="iframe"></iframe>
+</body>
+</html>
diff --git a/browser/base/content/test/contextMenu/test_contextmenu_links.html b/browser/base/content/test/contextMenu/test_contextmenu_links.html
new file mode 100644
index 0000000000..650c136f99
--- /dev/null
+++ b/browser/base/content/test/contextMenu/test_contextmenu_links.html
@@ -0,0 +1,14 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Subtest for browser context menu links</title>
+</head>
+<body>
+Browser context menu link subtest.
+
+<a id="test-link" href="https://example.com">Click the monkey!</a>
+<a id="test-image-link" href="/"><img src="ctxmenu-image.png"></a>
+<svg id="svg-with-link" width=10 height=10><a xlink:href="https://example.com/"><circle cx="50%" cy="50%" r="50%" fill="blue"/></a></svg>
+<svg id="svg-with-relative-link" width=10 height=10><a xlink:href="/"><circle cx="50%" cy="50%" r="50%" fill="blue"/></a></svg>
+</body>
+</html>
diff --git a/browser/base/content/test/contextMenu/test_view_image_inline_svg.html b/browser/base/content/test/contextMenu/test_view_image_inline_svg.html
new file mode 100644
index 0000000000..42a41e42cb
--- /dev/null
+++ b/browser/base/content/test/contextMenu/test_view_image_inline_svg.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html><head>
+<style>
+body {
+    background: fixed #222 url("data:image/svg+xml;base64,PHN2ZyBoZWlnaHQ9IjUwMCIgd2lkdGg9IjUwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxuczp4bGluaz0iaHR0cDovL3d3dy53My5vcmcvMTk5OS94bGluayI+PGZpbHRlciBpZD0iYSI+PGZlVHVyYnVsZW5jZSBiYXNlRnJlcXVlbmN5PSIuOSIgbnVtT2N0YXZlcz0iMTAiIHN0aXRjaFRpbGVzPSJzdGl0Y2giIHR5cGU9ImZyYWN0YWxOb2lzZSIvPjwvZmlsdGVyPjxwYXRoIGQ9Im0wIDBoNTAwdjUwMGgtNTAweiIgZmlsbD0iIzExMSIvPjxwYXRoIGQ9Im0wIDBoNTAwdjUwMGgtNTAweiIgZmlsdGVyPSJ1cmwoI2EpIiBvcGFjaXR5PSIuMiIvPjwvc3ZnPgo=");
+    background-size: cover;
+    color: #ccc;
+}
+</style>
+</head>
+<body>
+This page has an inline SVG image as a background.
+
+
+</body></html>
diff --git a/browser/base/content/test/contextMenu/test_view_image_revoked_cached_blob.html b/browser/base/content/test/contextMenu/test_view_image_revoked_cached_blob.html
new file mode 100644
index 0000000000..ba130c793a
--- /dev/null
+++ b/browser/base/content/test/contextMenu/test_view_image_revoked_cached_blob.html
@@ -0,0 +1,40 @@
+<!doctype html>
+<html class="wait">
+<meta charset="utf-8">
+<title>currentSrc is right even if underlying image is a shared blob</title>
+<img id="first">
+<img id="second">
+<script>
+(async function() {
+  let canvas = document.createElement("canvas");
+  canvas.width = 100;
+  canvas.height = 100;
+  let ctx = canvas.getContext("2d");
+  ctx.fillStyle = "green";
+  ctx.rect(0, 0, 100, 100);
+  ctx.fill();
+
+  let blob = await new Promise(resolve => canvas.toBlob(resolve));
+
+  let first = document.querySelector("#first");
+  let second = document.querySelector("#second");
+
+  let firstLoad = new Promise(resolve => {
+    first.addEventListener("load", resolve, { once: true });
+  });
+
+  let secondLoad = new Promise(resolve => {
+    second.addEventListener("load", resolve, { once: true });
+  });
+
+  let uri1 = URL.createObjectURL(blob);
+  let uri2 = URL.createObjectURL(blob);
+  first.src = uri1;
+  second.src = uri2;
+
+  await firstLoad;
+  await secondLoad;
+  URL.revokeObjectURL(uri1);
+  document.documentElement.className = "";
+}());
+</script>
-- 
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