Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

10 files changed, 800 insertions, 0 deletions

diff --git a/dom/notification/test/mochitest/MockServices.js b/dom/notification/test/mochitest/MockServices.js
new file mode 100644
index 0000000000..0f50bcf5bf
--- /dev/null
+++ b/dom/notification/test/mochitest/MockServices.js
@@ -0,0 +1,177 @@
+/* eslint-disable mozilla/use-chromeutils-generateqi */
+var MockServices = (function () {
+  "use strict";
+
+  const MOCK_ALERTS_CID = SpecialPowers.wrap(SpecialPowers.Components).ID(
+    "{48068bc2-40ab-4904-8afd-4cdfb3a385f3}"
+  );
+  const ALERTS_SERVICE_CONTRACT_ID = "@mozilla.org/alerts-service;1";
+
+  const MOCK_SYSTEM_ALERTS_CID = SpecialPowers.wrap(
+    SpecialPowers.Components
+  ).ID("{e86d888c-e41b-4b78-9104-2f2742a532de}");
+  const SYSTEM_ALERTS_SERVICE_CONTRACT_ID =
+    "@mozilla.org/system-alerts-service;1";
+
+  var registrar = SpecialPowers.wrap(
+    SpecialPowers.Components
+  ).manager.QueryInterface(SpecialPowers.Ci.nsIComponentRegistrar);
+
+  var activeAlertNotifications = Object.create(null);
+
+  var activeAppNotifications = Object.create(null);
+
+  window.addEventListener("mock-notification-close-event", function (e) {
+    for (var alertName in activeAlertNotifications) {
+      var notif = activeAlertNotifications[alertName];
+      if (notif.title === e.detail.title) {
+        notif.listener.observe(null, "alertfinished", null);
+        delete activeAlertNotifications[alertName];
+        delete activeAppNotifications[alertName];
+        return;
+      }
+    }
+  });
+
+  var mockAlertsService = {
+    showPersistentNotification(persistentData, alert, alertListener) {
+      this.showAlert(alert, alertListener);
+    },
+
+    showAlert(alert, alertListener) {
+      var listener = SpecialPowers.wrap(alertListener);
+      activeAlertNotifications[alert.name] = {
+        listener,
+        cookie: alert.cookie,
+        title: alert.title,
+      };
+
+      // fake async alert show event
+      if (listener) {
+        setTimeout(function () {
+          listener.observe(null, "alertshow", alert.cookie);
+        }, 100);
+        setTimeout(function () {
+          listener.observe(null, "alertclickcallback", alert.cookie);
+        }, 100);
+      }
+    },
+
+    showAlertNotification(
+      imageUrl,
+      title,
+      text,
+      textClickable,
+      cookie,
+      alertListener,
+      name
+    ) {
+      this.showAlert(
+        {
+          name,
+          cookie,
+          title,
+        },
+        alertListener
+      );
+    },
+
+    closeAlert(name) {
+      var alertNotification = activeAlertNotifications[name];
+      if (alertNotification) {
+        if (alertNotification.listener) {
+          alertNotification.listener.observe(
+            null,
+            "alertfinished",
+            alertNotification.cookie
+          );
+        }
+        delete activeAlertNotifications[name];
+      }
+
+      var appNotification = activeAppNotifications[name];
+      if (appNotification) {
+        delete activeAppNotifications[name];
+      }
+    },
+
+    QueryInterface(aIID) {
+      if (
+        SpecialPowers.wrap(aIID).equals(SpecialPowers.Ci.nsISupports) ||
+        SpecialPowers.wrap(aIID).equals(SpecialPowers.Ci.nsIAlertsService)
+      ) {
+        return this;
+      }
+      throw SpecialPowers.Components.results.NS_ERROR_NO_INTERFACE;
+    },
+
+    createInstance(aIID) {
+      return this.QueryInterface(aIID);
+    },
+  };
+  mockAlertsService = SpecialPowers.wrapCallbackObject(mockAlertsService);
+
+  // MockServices API
+  return {
+    register() {
+      try {
+        this.originalAlertsCID = registrar.contractIDToCID(
+          ALERTS_SERVICE_CONTRACT_ID
+        );
+      } catch (ex) {
+        this.originalAlertsCID = null;
+      }
+      try {
+        this.originalSystemAlertsCID = registrar.contractIDToCID(
+          SYSTEM_ALERTS_SERVICE_CONTRACT_ID
+        );
+      } catch (ex) {
+        this.originalSystemAlertsCID = null;
+      }
+
+      registrar.registerFactory(
+        MOCK_ALERTS_CID,
+        "alerts service",
+        ALERTS_SERVICE_CONTRACT_ID,
+        mockAlertsService
+      );
+
+      registrar.registerFactory(
+        MOCK_SYSTEM_ALERTS_CID,
+        "system alerts service",
+        SYSTEM_ALERTS_SERVICE_CONTRACT_ID,
+        mockAlertsService
+      );
+    },
+
+    unregister() {
+      registrar.unregisterFactory(MOCK_ALERTS_CID, mockAlertsService);
+      registrar.unregisterFactory(MOCK_SYSTEM_ALERTS_CID, mockAlertsService);
+
+      // Passing `null` for the factory re-maps the contract ID to the
+      // entry for its original CID.
+
+      if (this.originalAlertsCID) {
+        registrar.registerFactory(
+          this.originalAlertsCID,
+          "alerts service",
+          ALERTS_SERVICE_CONTRACT_ID,
+          null
+        );
+      }
+
+      if (this.originalSystemAlertsCID) {
+        registrar.registerFactory(
+          this.originalSystemAlertsCID,
+          "system alerts service",
+          SYSTEM_ALERTS_SERVICE_CONTRACT_ID,
+          null
+        );
+      }
+    },
+
+    activeAlertNotifications,
+
+    activeAppNotifications,
+  };
+})();
diff --git a/dom/notification/test/mochitest/NotificationTest.js b/dom/notification/test/mochitest/NotificationTest.js
new file mode 100644
index 0000000000..400ff56253
--- /dev/null
+++ b/dom/notification/test/mochitest/NotificationTest.js
@@ -0,0 +1,102 @@
+var NotificationTest = (function () {
+  "use strict";
+
+  function info(msg, name) {
+    SimpleTest.info("::Notification Tests::" + (name || ""), msg);
+  }
+
+  function setup_testing_env() {
+    SimpleTest.waitForExplicitFinish();
+    // turn on testing pref (used by notification.cpp, and mock the alerts
+    return SpecialPowers.setBoolPref("notification.prompt.testing", true);
+  }
+
+  async function teardown_testing_env() {
+    await SpecialPowers.clearUserPref("notification.prompt.testing");
+    await SpecialPowers.clearUserPref("notification.prompt.testing.allow");
+
+    SimpleTest.finish();
+  }
+
+  function executeTests(tests, callback) {
+    // context is `this` object in test functions
+    // it can be used to track data between tests
+    var context = {};
+
+    (function executeRemainingTests(remainingTests) {
+      if (!remainingTests.length) {
+        callback();
+        return;
+      }
+
+      var nextTest = remainingTests.shift();
+      var finishTest = executeRemainingTests.bind(null, remainingTests);
+      var startTest = nextTest.call.bind(nextTest, context, finishTest);
+
+      try {
+        startTest();
+        // if no callback was defined for test function,
+        // we must manually invoke finish to continue
+        if (nextTest.length === 0) {
+          finishTest();
+        }
+      } catch (e) {
+        ok(false, "Test threw exception!");
+        finishTest();
+      }
+    })(tests);
+  }
+
+  // NotificationTest API
+  return {
+    run(tests, callback) {
+      let ready = setup_testing_env();
+
+      addLoadEvent(async function () {
+        await ready;
+        executeTests(tests, function () {
+          teardown_testing_env();
+          callback && callback();
+        });
+      });
+    },
+
+    allowNotifications() {
+      return SpecialPowers.setBoolPref(
+        "notification.prompt.testing.allow",
+        true
+      );
+    },
+
+    denyNotifications() {
+      return SpecialPowers.setBoolPref(
+        "notification.prompt.testing.allow",
+        false
+      );
+    },
+
+    clickNotification(notification) {
+      // TODO: how??
+    },
+
+    fireCloseEvent(title) {
+      window.dispatchEvent(
+        new CustomEvent("mock-notification-close-event", {
+          detail: {
+            title,
+          },
+        })
+      );
+    },
+
+    info,
+
+    payload: {
+      body: "Body",
+      tag: "fakeTag",
+      icon: "icon.jpg",
+      lang: "en-US",
+      dir: "ltr",
+    },
+  };
+})();
diff --git a/dom/notification/test/mochitest/blank.html b/dom/notification/test/mochitest/blank.html
new file mode 100644
index 0000000000..1f9324523a
--- /dev/null
+++ b/dom/notification/test/mochitest/blank.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<html>
+  <body></body>
+</html>
diff --git a/dom/notification/test/mochitest/create_notification.html b/dom/notification/test/mochitest/create_notification.html
new file mode 100644
index 0000000000..b0387e4ffb
--- /dev/null
+++ b/dom/notification/test/mochitest/create_notification.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+<head><meta charset=utf-8>
+  <title>Create a notification</title>
+</head>
+<body>
+<script>
+
+var notification = new Notification("This is a title", {
+    body: "This is a notification body",
+    tag: "sometag",
+  });
+
+</script>
+</body>
+</html>
diff --git a/dom/notification/test/mochitest/mochitest.ini b/dom/notification/test/mochitest/mochitest.ini
new file mode 100644
index 0000000000..e2e84b575a
--- /dev/null
+++ b/dom/notification/test/mochitest/mochitest.ini
@@ -0,0 +1,22 @@
+[DEFAULT]
+
+support-files =
+  blank.html
+  create_notification.html
+  MockServices.js
+  NotificationTest.js
+skip-if = toolkit == 'android' # Bug 1531097
+
+[test_notification_basics.html]
+skip-if = xorigin # Bug 1792790
+[test_notification_crossorigin_iframe.html]
+# This test needs to be run on HTTP (not HTTPS).
+[test_notification_insecure_context.html]
+fail-if = xorigin
+skip-if =
+  http3
+[test_notification_permissions.html]
+scheme = https
+[test_notification_tag.html]
+skip-if =
+  http3
diff --git a/dom/notification/test/mochitest/test_notification_basics.html b/dom/notification/test/mochitest/test_notification_basics.html
new file mode 100644
index 0000000000..3dde839a96
--- /dev/null
+++ b/dom/notification/test/mochitest/test_notification_basics.html
@@ -0,0 +1,125 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Notification Basics</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="MockServices.js"></script>
+  <script type="text/javascript" src="NotificationTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<p id="display"></p>
+<div id="content" style="display: none"></div>
+<pre id="test"></pre>
+<script type="text/javascript">
+
+  var info = NotificationTest.info;
+  var options;
+
+  SimpleTest.requestFlakyTimeout("untriaged");
+
+  var steps = [
+    function() {
+      info("Test notification spec");
+      ok(Notification, "Notification constructor exists");
+      ok(Notification.permission, "Notification.permission exists");
+      ok(Notification.requestPermission, "Notification.requestPermission exists");
+    },
+
+    function() {
+      info("Test requestPermission without callback");
+      Notification.requestPermission();
+    },
+
+    async function(done) {
+      info("Test requestPermission deny");
+      function assertPermissionDenied(perm) {
+        is(perm, "denied", "Permission should be denied.");
+        is(Notification.permission, "denied", "Permission should be denied.");
+      }
+      await NotificationTest.denyNotifications();
+      Notification.requestPermission()
+        .then(assertPermissionDenied)
+        .then(_ => Notification.requestPermission(assertPermissionDenied))
+        .catch(err => {
+          ok(!err, "requestPermission should not reject promise");
+        })
+        .then(done);
+    },
+
+    async function(done) {
+      info("Test requestPermission grant");
+      function assertPermissionGranted(perm) {
+        is(perm, "granted", "Permission should be granted.");
+        is(Notification.permission, "granted", "Permission should be granted");
+      }
+      await NotificationTest.allowNotifications();
+      Notification.requestPermission()
+        .then(assertPermissionGranted)
+        .then(_ => Notification.requestPermission(assertPermissionGranted))
+        .catch(err => {
+          ok(!err, "requestPermission should not reject promise");
+        })
+        .then(done);
+    },
+
+    function(done) {
+      info("Test invalid requestPermission");
+      Notification.requestPermission({})
+        .then(_ => {
+          ok(false, "Non callable arg to requestPermission should reject promise");
+        }, err => {
+          ok(true, "Non callable arg to requestPermission should reject promise");
+        })
+        .then(done);
+    },
+
+    function(done) {
+      info("Test create notification");
+
+      options = NotificationTest.payload;
+
+      var notification = new Notification("This is a title", options);
+
+      ok(notification, "Notification exists");
+      is(notification.onclick, null, "onclick() should be null");
+      is(notification.onshow, null, "onshow() should be null");
+      is(notification.onerror, null, "onerror() should be null");
+      is(notification.onclose, null, "onclose() should be null");
+      is(typeof notification.close, "function", "close() should exist");
+
+      is(notification.dir, options.dir, "auto should get set");
+      is(notification.lang, options.lang, "lang should get set");
+      is(notification.body, options.body, "body should get set");
+      is(notification.tag, options.tag, "tag should get set");
+      is(notification.icon, options.icon, "icon should get set");
+
+      // store notification in test context
+      this.notification = notification;
+
+      notification.onshow = function() {
+        ok(true, "onshow handler should be called");
+        done();
+      };
+    },
+
+    function(done) {
+      info("Test closing a notification");
+      var notification = this.notification;
+
+      notification.onclose = function() {
+        ok(true, "onclose handler should be called");
+        done();
+      };
+
+      notification.close();
+    },
+  ];
+
+  MockServices.register();
+  NotificationTest.run(steps, function() {
+    MockServices.unregister();
+  });
+</script>
+</body>
+</html>
diff --git a/dom/notification/test/mochitest/test_notification_crossorigin_iframe.html b/dom/notification/test/mochitest/test_notification_crossorigin_iframe.html
new file mode 100644
index 0000000000..dfdec3b1bd
--- /dev/null
+++ b/dom/notification/test/mochitest/test_notification_crossorigin_iframe.html
@@ -0,0 +1,68 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Tests that Notification permissions are denied in cross-origin iframes.
+https://bugzilla.mozilla.org/show_bug.cgi?id=1560741
+-->
+<head>
+  <title>Notification permission in cross-origin iframes</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+  <p id="display"></p>
+  <div id="content" style="display: none">
+  </div>
+  <pre id="test">
+  <script class="testbody" type="text/javascript">
+  SimpleTest.waitForExplicitFinish();
+
+  const kBlankURL = "https://example.com/tests/dom/notification/test/mochitest/blank.html";
+
+  (async function runTest() {
+    await SpecialPowers.pushPrefEnv({"set": [
+      ["notification.prompt.testing", true],
+      ["notification.prompt.testing.allow", true],
+      ["dom.webnotifications.allowinsecure", true],
+    ]});
+
+    let iframe = document.createElement("iframe");
+    iframe.src = kBlankURL;
+    document.body.appendChild(iframe);
+    await new Promise(resolve => {
+      iframe.onload = resolve;
+    });
+
+    let checkRequest = async (expectedResponse, msg) => {
+      let response = await this.content.Notification.requestPermission();
+      Assert.equal(response, expectedResponse, msg);
+    };
+
+    await SpecialPowers.spawn(iframe,
+                              ["denied", "Denied permission in cross-origin iframe"],
+                              checkRequest);
+
+    let checkPermission = async (expectedPermission, msg) => {
+      let permission = this.content.Notification.permission;
+      Assert.equal(permission, expectedPermission, msg);
+    };
+
+    await SpecialPowers.spawn(iframe,
+                              ["denied", "Permission is denied in cross-origin iframe"],
+                              checkPermission);
+
+    await SpecialPowers.pushPrefEnv({"set": [["dom.webnotifications.allowcrossoriginiframe", true]]});
+
+    await SpecialPowers.spawn(iframe,
+                              ["granted", "Granted permission in cross-origin iframe with pref set"],
+                              checkRequest);
+    await SpecialPowers.spawn(iframe,
+                              ["granted", "Permission is granted in cross-origin iframe with pref set"],
+                              checkPermission);
+
+    SimpleTest.finish();
+  })();
+  </script>
+  </pre>
+</body>
+</html>
diff --git a/dom/notification/test/mochitest/test_notification_insecure_context.html b/dom/notification/test/mochitest/test_notification_insecure_context.html
new file mode 100644
index 0000000000..cd3a22bc7f
--- /dev/null
+++ b/dom/notification/test/mochitest/test_notification_insecure_context.html
@@ -0,0 +1,47 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Tests that Notification permissions are denied in insecure context.
+https://bugzilla.mozilla.org/show_bug.cgi?id=1429432
+-->
+<head>
+  <title>Notification permission in insecure context</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+  <p id="display"></p>
+  <div id="content" style="display: none">
+  </div>
+  <pre id="test">
+  <script class="testbody" type="text/javascript">
+  SimpleTest.waitForExplicitFinish();
+
+  // Add an allow permission for the mochitest origin to test this.
+  let script = SpecialPowers.loadChromeScript(function() {
+    /* eslint-env mozilla/chrome-script */
+    let principal = Services.scriptSecurityManager.createContentPrincipalFromOrigin("http://mochi.test:8888");
+    Services.perms.addFromPrincipal(principal, "desktop-notification", Services.perms.ALLOW_ACTION);
+    addMessageListener("destroy", function() {
+      Services.perms.removeFromPrincipal(principal, "desktop-notification");
+    });
+  });
+
+  (async function runTest() {
+    let response = await Notification.requestPermission();
+    is(response, "denied", "Denied permission in insecure context");
+
+    await SpecialPowers.pushPrefEnv({"set": [["dom.webnotifications.allowinsecure", true]]});
+
+    response = await Notification.requestPermission();
+    is(response, "granted", "Granted permission in insecure context with pref set");
+
+    script.sendAsyncMessage("destroy");
+    script.destroy();
+
+    SimpleTest.finish();
+  })();
+  </script>
+  </pre>
+</body>
+</html>
diff --git a/dom/notification/test/mochitest/test_notification_permissions.html b/dom/notification/test/mochitest/test_notification_permissions.html
new file mode 100644
index 0000000000..f074ccf58e
--- /dev/null
+++ b/dom/notification/test/mochitest/test_notification_permissions.html
@@ -0,0 +1,70 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+Tests that the Notification.requestPermission and navigator.permissions.query
+return values are consistent with the stored permission.
+https://bugzilla.mozilla.org/show_bug.cgi?id=1589754
+-->
+<head>
+  <title>Notification permissions and permissions API</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+  <p id="display"></p>
+  <div id="content" style="display: none">
+  </div>
+  <pre id="test">
+<script class="testbody">
+
+add_task(async function test_notifications_permission() {
+  await SpecialPowers.clearUserPref("notification.prompt.testing");
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      // Set pref to exercise relevant code path for regression test.
+      ["permissions.delegation.enabled", true],
+      // Automatically dismiss the permission request when it appears.
+      ["dom.webnotifications.requireuserinteraction", true],
+    ],
+  });
+
+  async function testPermissionInWindow(win) {
+    async function checkPermission(perm, expectedResult, expectedPermission) {
+      await SpecialPowers.pushPermissions([
+        {
+          type: "desktop-notification",
+          allow: SpecialPowers.Ci.nsIPermissionManager[perm],
+          context: document,
+        },
+      ]);
+      is(
+        await win.Notification.requestPermission(),
+        expectedResult,
+        `expected requestPermission() result for permission ${perm}`
+      );
+
+      let result =
+        await win.navigator.permissions.query({ name: "notifications" });
+      is(
+        result.state,
+        expectedPermission,
+        `expected permissions API result for permission ${perm}`
+      );
+    }
+
+    await checkPermission("UNKNOWN_ACTION", "default", "prompt");
+    await checkPermission("ALLOW_ACTION", "granted", "granted");
+    await checkPermission("DENY_ACTION", "denied", "denied");
+    await checkPermission("PROMPT_ACTION", "default", "prompt");
+  }
+
+  var win = window.open("blank.html");
+  await new Promise(resolve => { win.onload = resolve; });
+  await testPermissionInWindow(win);
+  win.close();
+});
+
+</script>
+  </pre>
+</body>
+</html>
diff --git a/dom/notification/test/mochitest/test_notification_tag.html b/dom/notification/test/mochitest/test_notification_tag.html
new file mode 100644
index 0000000000..f4fc72bbe3
--- /dev/null
+++ b/dom/notification/test/mochitest/test_notification_tag.html
@@ -0,0 +1,169 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=782211
+-->
+<head>
+  <title>Bug 782211</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=782211">Bug 782211</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+</div>
+<pre id="test">
+</pre>
+<script type="text/javascript">
+  /* eslint-disable mozilla/use-chromeutils-generateqi */
+
+  // The mock is not a general purpose mock, but is specific for this test.
+  // It is always registered in the parent process using LoadChromeScript by
+  // the MockAlertsService below, to allow this to work regardless of whether
+  // the frames from different origins live in the same process or in different
+  // processes (with Fission), since the default content-process alerts service
+  // relays messages to the parent process.
+  function mockServicesChromeScript() {
+    /* eslint-env mozilla/chrome-script */
+    const MOCK_CID = Components.ID("{dbe37e64-d9a3-402c-8d8a-0826c619f7ad}");
+    const ALERTS_SERVICE_CONTRACT_ID = "@mozilla.org/alerts-service;1";
+
+    var notificationsCreated = [];
+
+    const mockAlertsService = {
+      showAlert(alert, alertListener) {
+        notificationsCreated.push(alert.name);
+        if (notificationsCreated.length == 3) {
+          // notifications created by the test1 origin
+          var test1notifications = [];
+          // notifications created by the test2 origin
+          var test2notifications = [];
+          for (var i = 0; i < notificationsCreated.length; i++) {
+            var notificationName = notificationsCreated[i];
+            if (notificationName.includes("test1")) {
+              test1notifications.push(notificationsCreated[i]);
+            } else if (notificationName.includes("test2")) {
+              test2notifications.push(notificationsCreated[i]);
+            }
+          }
+
+          is(
+            test1notifications.length,
+            2,
+            "2 notifications should be created by test1.example.org:80 origin."
+          );
+          is(
+            test1notifications[0],
+            test1notifications[1],
+            "notification names should be identical."
+          );
+          is(
+            test2notifications.length,
+            1,
+            "1 notification should be created by test2.example.org:80 origin."
+          );
+
+          // Register original alerts service.
+          registrar.unregisterFactory(MOCK_CID, this);
+
+          sendAsyncMessage("mock-alert-service:unregistered");
+        }
+      },
+
+      showAlertNotification(
+        imageUrl,
+        title,
+        text,
+        textClickable,
+        cookie,
+        alertListener,
+        name,
+        dir,
+        lang,
+        data
+      ) {
+        this.showAlert({ name });
+      },
+
+      QueryInterface(aIID) {
+        if (aIID.equals(Ci.nsISupports) || aIID.equals(Ci.nsIAlertsService)) {
+          return this;
+        }
+        throw Components.Exception("", Cr.NS_ERROR_NO_INTERFACE);
+      },
+
+      createInstance(aIID) {
+        return this.QueryInterface(aIID);
+      },
+    };
+
+    const registrar = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
+
+    registrar.registerFactory(
+      MOCK_CID,
+      "alerts service",
+      ALERTS_SERVICE_CONTRACT_ID,
+      mockAlertsService
+    );
+
+    const { sendAsyncMessage } = this;
+
+    sendAsyncMessage("mock-alert-service:registered");
+  }
+
+  const MockAlertsService = {
+    async register() {
+      if (this._chromeScript) {
+        throw new Error("MockAlertsService already registered");
+      }
+      this._chromeScript = SpecialPowers.loadChromeScript(
+        mockServicesChromeScript
+      );
+      await this._chromeScript.promiseOneMessage("mock-alert-service:registered");
+    },
+    async unregistered() {
+      await this._chromeScript.promiseOneMessage(
+        "mock-alert-service:unregistered"
+      );
+    },
+  };
+
+  if (window.Notification) {
+    SimpleTest.waitForExplicitFinish();
+
+    async function showNotifications() {
+      await MockAlertsService.register();
+
+      // Load two frames with the same origin that create notification with the same tag.
+      // Both pages should generate notifications with the same name, and thus the second
+      // notification should replace the first.
+      let sameDomain = window.open("http://test1.example.org:80/tests/dom/notification/test/mochitest/create_notification.html");
+      let anotherSameDomain = window.open("http://test1.example.org:80/tests/dom/notification/test/mochitest/create_notification.html");
+      // Load a frame with a different origin that creates a notification with the same tag.
+      // The notification name should be different and thus no notifications should be replaced.
+      let crossDomain = window.open("http://test2.example.org:80/tests/dom/notification/test/mochitest/create_notification.html");
+
+      await MockAlertsService.unregistered();
+
+      sameDomain.close();
+      anotherSameDomain.close();
+      crossDomain.close();
+      SimpleTest.finish();
+    }
+
+    SpecialPowers.pushPrefEnv(
+      {
+        set: [
+          ["notification.prompt.testing", true],
+          ["notification.prompt.testing.allow", true],
+        ],
+      },
+      showNotifications
+    );
+  } else {
+    ok(true, "Notifications are not enabled on the platform.");
+  }
+</script>
+</body>
+</html>