1 files changed, 46 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_bug441778.js b/browser/base/content/test/general/browser_bug441778.js
new file mode 100644
index 000000000..fa938541f
--- /dev/null
+++ b/browser/base/content/test/general/browser_bug441778.js
@@ -0,0 +1,46 @@
+/* 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/. */
+
+/*
+ * Test the fix for bug 441778 to ensure site-specific page zoom doesn't get
+ * modified by sub-document loads of content from a different domain.
+ */
+
+function test() {
+  waitForExplicitFinish();
+
+  const TEST_PAGE_URL = 'data:text/html,<body><iframe src=""></iframe></body>';
+  const TEST_IFRAME_URL = "http://test2.example.org/";
+
+  Task.spawn(function* () {
+    // Prepare the test tab
+    let tab = gBrowser.addTab();
+    yield FullZoomHelper.selectTabAndWaitForLocationChange(tab);
+
+    let testBrowser = tab.linkedBrowser;
+
+    yield FullZoomHelper.load(tab, TEST_PAGE_URL);
+
+    // Change the zoom level and then save it so we can compare it to the level
+    // after loading the sub-document.
+    FullZoom.enlarge();
+    var zoomLevel = ZoomManager.zoom;
+
+    // Start the sub-document load.
+    let deferred = Promise.defer();
+    executeSoon(function () {
+      BrowserTestUtils.browserLoaded(testBrowser, true).then(url => {
+        is(url, TEST_IFRAME_URL, "got the load event for the iframe");
+        is(ZoomManager.zoom, zoomLevel, "zoom is retained after sub-document load");
+
+        FullZoomHelper.removeTabAndWaitForLocationChange().
+          then(() => deferred.resolve());
+      });
+      ContentTask.spawn(testBrowser, TEST_IFRAME_URL, url => {
+        content.document.querySelector("iframe").src = url;
+      });
+    });
+    yield deferred.promise;
+  }).then(finish, FullZoomHelper.failAndContinue(finish));
+}