--- a/dom/notification/moz.build
+++ b/dom/notification/moz.build
@@ -31,9 +31,10 @@ include('/ipc/chromium/chromium-config.m
 
 FINAL_LIBRARY = 'xul'
 LOCAL_INCLUDES += [
     '/dom/base',
     '/dom/ipc',
     '/dom/workers',
 ]
 
+BROWSER_CHROME_MANIFESTS += ['test/browser/browser.ini']
 XPCSHELL_TESTS_MANIFESTS += ['test/unit/xpcshell.ini']

new file mode 100644
--- /dev/null
+++ b/dom/notification/test/browser/browser.ini
@@ -0,0 +1,2 @@
+[browser_permission_dismiss.js]
+support-files = notification.html

new file mode 100644
--- /dev/null
+++ b/dom/notification/test/browser/browser_permission_dismiss.js
@@ -0,0 +1,113 @@
+"use strict";
+
+const ORIGIN_URI = Services.io.newURI("http://mochi.test:8888", null, null);
+const PERMISSION_NAME = "desktop-notification";
+const PROMPT_ALLOW_BUTTON = -1;
+const PROMPT_BLOCK_BUTTON = 0;
+const TEST_URL = "http://mochi.test:8888/browser/dom/notification/test/browser/notification.html";
+
+/**
+ * Clicks the specified web-notifications prompt button.
+ *
+ * @param {Number} aButtonIndex Number indicating which button to click.
+ *                              See the constants in this file.
+ * @note modified from toolkit/components/passwordmgr/test/browser/head.js
+ */
+function clickDoorhangerButton(aButtonIndex) {
+  ok(true, "Looking for action at index " + aButtonIndex);
+
+  let popup = PopupNotifications.getNotification("web-notifications");
+  let notifications = popup.owner.panel.childNodes;
+  ok(notifications.length > 0, "at least one notification displayed");
+  ok(true, notifications.length + " notification(s)");
+  let notification = notifications[0];
+
+  if (aButtonIndex == -1) {
+    ok(true, "Triggering main action");
+    notification.button.doCommand();
+  } else if (aButtonIndex <= popup.secondaryActions.length) {
+    ok(true, "Triggering secondary action " + aButtonIndex);
+    notification.childNodes[aButtonIndex].doCommand();
+  }
+}
+
+/**
+ * Opens a tab which calls `Notification.requestPermission()` with a callback
+ * argument, calls the `task` function while the permission prompt is open,
+ * and verifies that the expected permission is set.
+ *
+ * @param {Function} task Task function to run to interact with the prompt.
+ * @param {String} permission Expected permission value.
+ * @return {Promise} resolving when the task function is done and the tab
+ *                   closes.
+ */
+function tabWithRequest(task, permission) {
+  Services.perms.remove(ORIGIN_URI, PERMISSION_NAME);
+
+  return BrowserTestUtils.withNewTab({
+    gBrowser,
+    url: TEST_URL,
+  }, function*(browser) {
+    let requestPromise = ContentTask.spawn(browser, {
+      permission
+    }, function*({permission}) {
+      function requestCallback(perm) {
+        is(perm, permission,
+          "Should call the legacy callback with the permission state");
+      }
+      let perm = yield content.window.Notification
+                              .requestPermission(requestCallback);
+      is(perm, permission,
+         "Should resolve the promise with the permission state");
+    });
+
+    yield BrowserTestUtils.waitForEvent(PopupNotifications.panel, "popupshown");
+    yield task();
+    yield requestPromise;
+  });
+}
+
+add_task(function* setup() {
+  SimpleTest.registerCleanupFunction(() => {
+    Services.perms.remove(ORIGIN_URI, PERMISSION_NAME);
+  });
+});
+
+add_task(function* test_requestPermission_granted() {
+  yield tabWithRequest(function() {
+    clickDoorhangerButton(PROMPT_ALLOW_BUTTON);
+  }, "granted");
+
+  ok(!PopupNotifications.getNotification("web-notifications"),
+     "Should remove the doorhanger notification icon if granted");
+
+  is(Services.perms.testPermission(ORIGIN_URI, PERMISSION_NAME),
+     Services.perms.ALLOW_ACTION,
+     "Check permission in perm. manager");
+});
+
+add_task(function* test_requestPermission_denied() {
+  yield tabWithRequest(function() {
+    clickDoorhangerButton(PROMPT_BLOCK_BUTTON);
+  }, "denied");
+
+  ok(!PopupNotifications.getNotification("web-notifications"),
+     "Should remove the doorhanger notification icon if denied");
+
+  is(Services.perms.testPermission(ORIGIN_URI, PERMISSION_NAME),
+     Services.perms.DENY_ACTION,
+     "Check permission in perm. manager");
+});
+
+add_task(function* test_requestPermission_dismissed() {
+  yield tabWithRequest(function() {
+    PopupNotifications.panel.hidePopup();
+  }, "default");
+
+  ok(!PopupNotifications.getNotification("web-notifications"),
+     "Should remove the doorhanger notification icon if dismissed");
+
+  is(Services.perms.testPermission(ORIGIN_URI, PERMISSION_NAME),
+     Services.perms.UNKNOWN_ACTION,
+     "Check permission in perm. manager");
+});

new file mode 100644
--- /dev/null
+++ b/dom/notification/test/browser/notification.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Notifications test</title>
+  </head>
+
+  <body>
+
+  </body>
+</html>