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

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

12 files changed, 698 insertions, 0 deletions

diff --git a/testing/mochitest/chrome-harness.js b/testing/mochitest/chrome-harness.js
new file mode 100644
index 0000000000..cb224a3c2f
--- /dev/null
+++ b/testing/mochitest/chrome-harness.js
@@ -0,0 +1,262 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et: */
+/* 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/. */
+
+var { NetUtil } = ChromeUtils.import("resource://gre/modules/NetUtil.jsm");
+
+/* import-globals-from manifestLibrary.js */
+
+// Defined in browser-test.js
+/* global gTestPath */
+
+/*
+ * getChromeURI converts a URL to a URI
+ *
+ * url: string of a URL (http://mochi.test/test.html)
+ * returns: a nsiURI object representing the given URL
+ *
+ */
+function getChromeURI(url) {
+  return Services.io.newURI(url);
+}
+
+/*
+ * Convert a URL (string) into a nsIURI or NSIJARURI
+ * This is intended for URL's that are on a file system
+ * or in packaged up in an extension .jar file
+ *
+ * url: a string of a url on the local system(http://localhost/blah.html)
+ */
+function getResolvedURI(url) {
+  var chromeURI = getChromeURI(url);
+  var resolvedURI = Cc["@mozilla.org/chrome/chrome-registry;1"]
+    .getService(Ci.nsIChromeRegistry)
+    .convertChromeURL(chromeURI);
+
+  try {
+    resolvedURI = resolvedURI.QueryInterface(Ci.nsIJARURI);
+  } catch (ex) {} // not a jar file
+
+  return resolvedURI;
+}
+
+/**
+ *  getChromeDir is intended to be called after getResolvedURI and convert
+ *  the input URI into a nsIFile (actually the directory containing the
+ *  file).  This can be used for copying or referencing the file or extra files
+ *  required by the test.  Usually we need to load a secondary html file or library
+ *  and this will give us file system access to that.
+ *
+ *  resolvedURI: nsIURI (from getResolvedURI) that points to a file:/// url
+ */
+function getChromeDir(resolvedURI) {
+  var fileHandler = Cc["@mozilla.org/network/protocol;1?name=file"].getService(
+    Ci.nsIFileProtocolHandler
+  );
+  var chromeDir = fileHandler.getFileFromURLSpec(resolvedURI.spec);
+  return chromeDir.parent.QueryInterface(Ci.nsIFile);
+}
+
+// used by tests to determine their directory based off window.location.path
+function getRootDirectory(path, chromeURI) {
+  if (chromeURI === undefined) {
+    chromeURI = getChromeURI(path);
+  }
+  var myURL = chromeURI.QueryInterface(Ci.nsIURL);
+  var mydir = myURL.directory;
+
+  if (mydir.match("/$") != "/") {
+    mydir += "/";
+  }
+
+  return chromeURI.prePath + mydir;
+}
+
+// used by tests to determine their directory based off window.location.path
+function getChromePrePath(path, chromeURI) {
+  if (chromeURI === undefined) {
+    chromeURI = getChromeURI(path);
+  }
+
+  return chromeURI.prePath;
+}
+
+/*
+ * Given a URI, return nsIJARURI or null
+ */
+function getJar(uri) {
+  var resolvedURI = getResolvedURI(uri);
+  var jar = null;
+  try {
+    if (resolvedURI.JARFile) {
+      jar = resolvedURI;
+    }
+  } catch (ex) {}
+  return jar;
+}
+
+/*
+ * input:
+ *  jar: a nsIJARURI object with the jarfile and jarentry (path in jar file)
+ *
+ * output;
+ *  all files and subdirectories inside jarentry will be extracted to TmpD/mochikit.tmp
+ *  we will return the location of /TmpD/mochikit.tmp* so you can reference the files locally
+ */
+function extractJarToTmp(jar) {
+  var tmpdir = Services.dirsvc.get("ProfD", Ci.nsIFile);
+  tmpdir.append("mochikit.tmp");
+  // parseInt is used because octal escape sequences cause deprecation warnings
+  // in strict mode (which is turned on in debug builds)
+  tmpdir.createUnique(Ci.nsIFile.DIRECTORY_TYPE, parseInt("0777", 8));
+
+  var zReader = Cc["@mozilla.org/libjar/zip-reader;1"].createInstance(
+    Ci.nsIZipReader
+  );
+
+  var fileHandler = Cc["@mozilla.org/network/protocol;1?name=file"].getService(
+    Ci.nsIFileProtocolHandler
+  );
+
+  var fileName = fileHandler.getFileFromURLSpec(jar.JARFile.spec);
+  zReader.open(fileName);
+
+  // filepath represents the path in the jar file without the filename
+  var filepath = "";
+  var parts = jar.JAREntry.split("/");
+  for (var i = 0; i < parts.length - 1; i++) {
+    if (parts[i] != "") {
+      filepath += parts[i] + "/";
+    }
+  }
+
+  /* Create dir structure first, no guarantee about ordering of directories and
+   * files returned from findEntries.
+   */
+  for (let dir of zReader.findEntries(filepath + "*/")) {
+    var targetDir = buildRelativePath(dir, tmpdir, filepath);
+    // parseInt is used because octal escape sequences cause deprecation warnings
+    // in strict mode (which is turned on in debug builds)
+    if (!targetDir.exists()) {
+      targetDir.create(Ci.nsIFile.DIRECTORY_TYPE, parseInt("0777", 8));
+    }
+  }
+
+  // now do the files
+  for (var fname of zReader.findEntries(filepath + "*")) {
+    if (fname.substr(-1) != "/") {
+      var targetFile = buildRelativePath(fname, tmpdir, filepath);
+      zReader.extract(fname, targetFile);
+    }
+  }
+  return tmpdir;
+}
+
+/*
+ * Take a relative path from the current mochitest file
+ * and returns the absolute path for the given test data file.
+ */
+function getTestFilePath(path) {
+  if (path[0] == "/") {
+    throw new Error("getTestFilePath only accepts relative path");
+  }
+  // Get the chrome/jar uri for the current mochitest file
+  // gTestPath being defined by the test harness in browser-chrome tests
+  // or window is being used for mochitest-browser
+  var baseURI = typeof gTestPath == "string" ? gTestPath : window.location.href;
+  var parentURI = getResolvedURI(getRootDirectory(baseURI));
+  var file;
+  if (parentURI.JARFile) {
+    // If it's a jar/zip, we have to extract it first
+    file = extractJarToTmp(parentURI);
+  } else {
+    // Otherwise, we can directly cast it to a file URI
+    var fileHandler = Cc[
+      "@mozilla.org/network/protocol;1?name=file"
+    ].getService(Ci.nsIFileProtocolHandler);
+    file = fileHandler.getFileFromURLSpec(parentURI.spec);
+  }
+  // Then walk by the given relative path
+  path.split("/").forEach(function (p) {
+    if (p == "..") {
+      file = file.parent;
+    } else if (p != ".") {
+      file.append(p);
+    }
+  });
+  return file.path;
+}
+
+/*
+ * Simple utility function to take the directory structure in jarentryname and
+ * translate that to a path of a nsIFile.
+ */
+function buildRelativePath(jarentryname, destdir, basepath) {
+  var baseParts = basepath.split("/");
+  if (baseParts[baseParts.length - 1] == "") {
+    baseParts.pop();
+  }
+
+  var parts = jarentryname.split("/");
+
+  var targetFile = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
+  targetFile.initWithFile(destdir);
+
+  for (var i = baseParts.length; i < parts.length; i++) {
+    targetFile.append(parts[i]);
+  }
+
+  return targetFile;
+}
+
+function readConfig(filename) {
+  filename = filename || "testConfig.js";
+
+  var configFile = Services.dirsvc.get("ProfD", Ci.nsIFile);
+  configFile.append(filename);
+
+  if (!configFile.exists()) {
+    return {};
+  }
+
+  var fileInStream = Cc[
+    "@mozilla.org/network/file-input-stream;1"
+  ].createInstance(Ci.nsIFileInputStream);
+  fileInStream.init(configFile, -1, 0, 0);
+
+  var str = NetUtil.readInputStreamToString(
+    fileInStream,
+    fileInStream.available()
+  );
+  fileInStream.close();
+  return JSON.parse(str);
+}
+
+function getTestList(params, callback) {
+  var baseurl = "chrome://mochitests/content";
+  if (window.parseQueryString) {
+    params = window.parseQueryString(location.search.substring(1), true);
+  }
+  if (!params.baseurl) {
+    params.baseurl = baseurl;
+  }
+
+  var config = readConfig();
+  for (var p in params) {
+    if (params[p] == 1) {
+      config[p] = true;
+    } else if (params[p] == 0) {
+      config[p] = false;
+    } else {
+      config[p] = params[p];
+    }
+  }
+  params = config;
+  getTestManifest(
+    "http://mochi.test:8888/" + params.manifestFile,
+    params,
+    callback
+  );
+}
diff --git a/testing/mochitest/chrome/chrome.ini b/testing/mochitest/chrome/chrome.ini
new file mode 100644
index 0000000000..54fe522226
--- /dev/null
+++ b/testing/mochitest/chrome/chrome.ini
@@ -0,0 +1,16 @@
+[DEFAULT]
+skip-if = os == 'android'
+support-files = test-dir/test-file
+
+[test_sample.xhtml]
+[test_sanityEventUtils.xhtml]
+fail-if = headless # Bug 1678303
+[test_sanityException.xhtml]
+[test_sanityException2.xhtml]
+[test_sanityManifest.xhtml]
+fail-if = true
+[test_sanityManifest_pf.xhtml]
+fail-if = true
+[test_chromeGetTestFile.xhtml]
+[test_tasks_skip.xhtml]
+[test_tasks_skipall.xhtml]
diff --git a/testing/mochitest/chrome/test-dir/test-file b/testing/mochitest/chrome/test-dir/test-file
new file mode 100644
index 0000000000..257cc5642c
--- /dev/null
+++ b/testing/mochitest/chrome/test-dir/test-file
@@ -0,0 +1 @@
+foo
diff --git a/testing/mochitest/chrome/test_chromeGetTestFile.xhtml b/testing/mochitest/chrome/test_chromeGetTestFile.xhtml
new file mode 100644
index 0000000000..9bc0a74f3b
--- /dev/null
+++ b/testing/mochitest/chrome/test_chromeGetTestFile.xhtml
@@ -0,0 +1,47 @@
+<?xml version="1.0"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Test chrome harness functions"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script src="chrome://mochikit/content/chrome-harness.js"></script>
+  <script type="application/javascript">
+  <![CDATA[
+    add_task(async function test() {
+      SimpleTest.doesThrow(function () {
+        getTestFilePath("/test_chromeGetTestFile.xhtml")
+      }, "getTestFilePath rejects absolute paths");
+
+      await Promise.all([
+        IOUtils.exists(getTestFilePath("test_chromeGetTestFile.xhtml"))
+          .then(function (exists) {
+            ok(exists, "getTestFilePath consider the path as being relative");
+          }),
+
+        IOUtils.exists(getTestFilePath("./test_chromeGetTestFile.xhtml"))
+          .then(function (exists) {
+            ok(exists, "getTestFilePath also accepts explicit relative path");
+          }),
+
+        IOUtils.exists(getTestFilePath("./test_chromeGetTestFileTypo.xhtml"))
+          .then(function (exists) {
+            ok(!exists, "getTestFilePath do not throw if the file doesn't exists");
+          }),
+
+        IOUtils.readUTF8(getTestFilePath("test-dir/test-file"))
+          .then(function (content) {
+            is(content, "foo\n", "getTestFilePath can reach sub-folder files 1/2");
+          }),
+
+        IOUtils.readUTF8(getTestFilePath("./test-dir/test-file"))
+          .then(function (content) {
+            is(content, "foo\n", "getTestFilePath can reach sub-folder files 2/2");
+          })
+      ]);
+    });
+  ]]>
+  </script>
+</window>
diff --git a/testing/mochitest/chrome/test_sample.xhtml b/testing/mochitest/chrome/test_sample.xhtml
new file mode 100644
index 0000000000..041a910aa9
--- /dev/null
+++ b/testing/mochitest/chrome/test_sample.xhtml
@@ -0,0 +1,35 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=8675309
+-->
+<window title="Mozilla Bug 8675309"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />
+
+<body  xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=8675309">Mozilla Bug 8675309</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+</pre>
+</body>
+
+<script class="testbody" type="application/javascript">
+<![CDATA[
+
+/** Test for Bug 8675309 **/
+
+ok(true, "sanity check");
+
+
+
+]]>
+</script>
+
+</window>
diff --git a/testing/mochitest/chrome/test_sanityEventUtils.xhtml b/testing/mochitest/chrome/test_sanityEventUtils.xhtml
new file mode 100644
index 0000000000..ccfd9dbd7c
--- /dev/null
+++ b/testing/mochitest/chrome/test_sanityEventUtils.xhtml
@@ -0,0 +1,171 @@
+<?xml version="1.0"?>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+   - License, v. 2.0. If a copy of the MPL was not distributed with this
+   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Test EventUtils functions"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script type="text/javascript">
+  var start = new Date();
+  </script>
+  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
+  <script type="text/javascript">
+  var loadTime = new Date();
+  </script>
+  <script type="application/javascript">
+  <![CDATA[
+    info("\nProfile::EventUtilsLoadTime: " + (loadTime - start) + "\n");
+    var testFile = Services.dirsvc.get("CurWorkD", Ci.nsIFile);
+    var regularDtForDrag1 = null;
+    var gSetDropEffect = true;
+    var gData;
+    var gEnter = false;
+    var gOver  = false;
+    var dragDrop = [[
+      { type    : "text/plain",
+        data    : "This is a test" }
+    ]];
+    // this is the expected data arrays
+    // for testing drag of 2 items create 2 inner arrays
+    var drag1 = [[
+      { type  : "text/uri-list",
+        data  : "http://www.mozilla.org/" }
+    ]];
+    var drag2items = [[
+      { type  : "text/uri-list",
+        data  : "http://www.mozilla.org/" }
+      ],[
+      { type  : "text/uri-list",
+        data  : "http://www.mozilla.org/" }
+    ]];
+    var drag1WrongFlavor = [[
+      { type  : "text/plain",
+        data  : "this is text/plain" }
+    ]];
+    var drag2 = [[
+      { type  : "text/plain",
+        data  : "this is text/plain" },
+      { type  : "text/uri-list",
+        data  : "http://www.mozilla.org/" }
+    ]];
+    var drag2WrongOrder = [[
+      { type  : "text/uri-list",
+        data  : "http://www.mozilla.org/" },
+      { type  : "text/plain",
+        data  : "this is text/plain" }
+    ]];
+    var dragfile = [[
+      { type    : "application/x-moz-file",
+        data    : testFile,
+        eqTest(actualData, expectedData) {return expectedData.equals(actualData);} },
+      { type    : "Files",
+        data    : null }
+    ]];
+
+    function doOnDrop(aEvent) {
+      gData = aEvent.dataTransfer.getData(dragDrop[0][0].type);
+      aEvent.preventDefault(); // cancels event and keeps dropEffect
+                               // as was before event.
+    }
+
+    function doOnDragStart(aEvent) {
+      var dt = aEvent.dataTransfer;
+      switch (aEvent.currentTarget.id) {
+        case "drag2" :
+          dt.setData("text/plain", "this is text/plain");
+          // fallthrough
+        case "drag1" :
+          regularDtForDrag1 = dt;
+          dt.setData("text/uri-list", "http://www.mozilla.org/");
+          break;
+        case "dragfile" :
+          dt.mozSetDataAt("application/x-moz-file", testFile, 0);
+          break;
+      }
+        dt.effectAllowed = "all";
+    }
+
+    function doOnDragEnter(aEvent) {
+      gEnter = true;
+      aEvent.dataTransfer.effectAllowed = "all";
+      aEvent.preventDefault(); // sets target this element
+    }
+
+    function doOnDragOver(aEvent) {
+      gOver = true;
+      if (gSetDropEffect)
+        aEvent.dataTransfer.dropEffect = "copy";
+      aEvent.preventDefault();
+    }
+
+    SimpleTest.waitForExplicitFinish();
+    async function test() {
+      var startTime = new Date();
+      var result;
+
+      /* test synthesizeDrop */
+      result = synthesizeDrop($("dragDrop"), $("dragDrop"), dragDrop, null, window);
+      ok(gEnter, "Fired dragenter");
+      ok(gOver,  "Fired dragover");
+      is(result, "copy", "copy is dropEffect");
+      is(gData, dragDrop[0][0].data, "Received valid drop data");
+
+      gSetDropEffect = false;
+      result = synthesizeDrop($("dragDrop"), $("dragDrop"), dragDrop, "link", window);
+      is(result, "link", "link is dropEffect");
+      gSetDropEffect = true;
+
+      $("textB").focus();
+      var content = synthesizeQueryTextContent(0, 100);
+      ok(content, "synthesizeQueryTextContent should not be null");
+      ok(content.succeeded, "synthesizeQueryTextContent should succeed");
+      is(content.text, "I haz a content", "synthesizeQueryTextContent should be 'I haz a content': " + content.text);
+
+      content = synthesizeQueryCaretRect(0);
+      ok(content, "synthesizeQueryCaretRect should not be null");
+      ok(content.succeeded, "synthesizeQueryCaretRect should succeed");
+
+      content = synthesizeQueryTextRect(0, 100);
+      ok(content, "synthesizeQueryTextRect should not be null");
+      ok(content.succeeded, "synthesizeQueryTextRect should succeed");
+
+      content = synthesizeQueryEditorRect();
+      ok(content, "synthesizeQueryEditorRect should not be null");
+      ok(content.succeeded, "synthesizeQueryEditorRect should succeed");
+
+      content = synthesizeCharAtPoint(0, 0);
+      ok(content, "synthesizeCharAtPoint should not be null");
+      ok(content.succeeded, "synthesizeCharAtPoint should succeed");
+
+      content = await synthesizeSelectionSet(0, 100);
+      ok(content, "synthesizeSelectionSet should not be null");
+      is(content, true, "synthesizeSelectionSet should succeed");
+
+      var endTime = new Date();
+      info("\nProfile::EventUtilsRunTime: " + (endTime-startTime) + "\n");
+      SimpleTest.finish();
+    };
+  ]]>
+  </script>
+
+  <body xmlns="http://www.w3.org/1999/xhtml" onload="setTimeout(test, 0)">
+    <input id="textB" value="I haz a content"/>
+    <p id="display"></p>
+    <div id="content" style="display:none;"></div>
+    <pre id="test"></pre>
+    <div id="drag1" ondragstart="doOnDragStart(event);">Need some space here</div>
+    <p id="display"></p>
+    <div id="content" style="display:none;"></div>
+    <pre id="test"></pre>
+    <div id="dragDrop" ondragover  ="doOnDragOver(event);"
+                    ondragenter ="doOnDragEnter(event);"
+                    ondragleave ="doOnDragLeave(event);"
+                    ondrop      ="doOnDrop(event);">
+    Need some depth and height to drag here
+    </div>
+    <div id="drag2" ondragstart="doOnDragStart(event);">Need more space</div>
+    <div id="dragfile" ondragstart="doOnDragStart(event);">Sure why not here too</div>
+  </body>
+</window>
diff --git a/testing/mochitest/chrome/test_sanityException.xhtml b/testing/mochitest/chrome/test_sanityException.xhtml
new file mode 100644
index 0000000000..198e21a60c
--- /dev/null
+++ b/testing/mochitest/chrome/test_sanityException.xhtml
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=670817
+-->
+<window title="Mozilla Bug 670817"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=670817">Mozilla Bug 670817</a>
+<script type="application/javascript"><![CDATA[
+
+SimpleTest.expectUncaughtException();
+ok(true, "a call to ok");
+// eslint-disable-next-line no-throw-literal
+throw "this is a deliberately thrown exception";
+
+]]></script>
+</body>
+
+</window>
diff --git a/testing/mochitest/chrome/test_sanityException2.xhtml b/testing/mochitest/chrome/test_sanityException2.xhtml
new file mode 100644
index 0000000000..78d97032aa
--- /dev/null
+++ b/testing/mochitest/chrome/test_sanityException2.xhtml
@@ -0,0 +1,30 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=670817
+-->
+<window title="Mozilla Bug 670817"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=670817">Mozilla Bug 670817</a>
+<script type="application/javascript"><![CDATA[
+
+SimpleTest.waitForExplicitFinish();
+ok(true, "a call to ok");
+SimpleTest.executeSoon(function() {
+  SimpleTest.expectUncaughtException();
+  // eslint-disable-next-line no-throw-literal
+  throw "this is a deliberately thrown exception";
+});
+SimpleTest.executeSoon(function() {
+  SimpleTest.finish();
+});
+
+]]></script>
+</body>
+
+</window>
diff --git a/testing/mochitest/chrome/test_sanityManifest.xhtml b/testing/mochitest/chrome/test_sanityManifest.xhtml
new file mode 100644
index 0000000000..14a1ef543e
--- /dev/null
+++ b/testing/mochitest/chrome/test_sanityManifest.xhtml
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=670817
+-->
+<window title="Mozilla Bug 987849"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=987849">Mozilla Bug 987849</a>
+<script type="application/javascript"><![CDATA[
+ok(false, "a call to ok");
+]]></script>
+</body>
+
+</window>
diff --git a/testing/mochitest/chrome/test_sanityManifest_pf.xhtml b/testing/mochitest/chrome/test_sanityManifest_pf.xhtml
new file mode 100644
index 0000000000..0f8c5e0a48
--- /dev/null
+++ b/testing/mochitest/chrome/test_sanityManifest_pf.xhtml
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=670817
+-->
+<window title="Mozilla Bug 987849"
+  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=987849">Mozilla Bug 987849</a>
+<script type="application/javascript"><![CDATA[
+ok(true, "a true call to ok");
+ok(false, "a false call to ok");
+]]></script>
+</body>
+
+</window>
diff --git a/testing/mochitest/chrome/test_tasks_skip.xhtml b/testing/mochitest/chrome/test_tasks_skip.xhtml
new file mode 100644
index 0000000000..2d321356af
--- /dev/null
+++ b/testing/mochitest/chrome/test_tasks_skip.xhtml
@@ -0,0 +1,36 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Test add_task.skip() function"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script type="application/javascript">
+    <![CDATA[
+
+      // Check that we can skip arbitrary tasks by calling `skip()`.
+
+      add_task(async function skipMeNot1() {
+        ok(true, "Well well well.");
+      });
+
+      add_task(async function skipMe1() {
+        ok(false, "Not skipped after all.");
+      }).skip();
+
+      add_task(async function skipMeNot2() {
+        ok(true, "Well well well.");
+      });
+
+      add_task(async function skipMeNot3() {
+        ok(true, "Well well well.");
+      });
+
+      add_task(async function skipMe2() {
+        ok(false, "Not skipped after all.");
+      }).skip();
+
+    ]]>
+  </script>
+  <body xmlns="http://www.w3.org/1999/xhtml" >
+  </body>
+</window>
diff --git a/testing/mochitest/chrome/test_tasks_skipall.xhtml b/testing/mochitest/chrome/test_tasks_skipall.xhtml
new file mode 100644
index 0000000000..40a2fe1a58
--- /dev/null
+++ b/testing/mochitest/chrome/test_tasks_skipall.xhtml
@@ -0,0 +1,37 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
+                 type="text/css"?>
+<window title="Test add_task.only() function"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+  <script type="application/javascript">
+    <![CDATA[
+
+      /* eslint-disable mozilla/reject-addtask-only */
+      // Check that we can skip all but one task by calling `only()`.
+
+      add_task(async function skipMe1() {
+        ok(false, "Not skipped after all.");
+      });
+
+      add_task(async function skipMe2() {
+        ok(false, "Not skipped after all.");
+      }).skip();
+
+      add_task(async function skipMe3() {
+        ok(false, "Not skipped after all.");
+      }).only();
+
+      add_task(async function skipMeNot() {
+        ok(true, "Well well well.");
+      }).only();
+
+      add_task(async function skipMe4() {
+        ok(false, "Not skipped after all.");
+      });
+
+    ]]>
+  </script>
+  <body xmlns="http://www.w3.org/1999/xhtml" >
+  </body>
+</window>