1 files changed, 47 insertions, 0 deletions
diff --git a/dom/ipc/tests/browser_bug1686194.js b/dom/ipc/tests/browser_bug1686194.js
new file mode 100644
index 0000000000..f6acefa2f2
--- /dev/null
+++ b/dom/ipc/tests/browser_bug1686194.js
@@ -0,0 +1,47 @@
+/* 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/. */
+
+"use strict";
+
+const TEST_PAGE =
+  "http://mochi.test:8888/browser/dom/ipc/tests/file_dummy.html";
+
+function untilPageTitleChanged() {
+  return new Promise(resolve =>
+    gBrowser.addEventListener("pagetitlechanged", resolve, { once: true })
+  );
+}
+
+add_task(async () => {
+  const tab = await BrowserTestUtils.openNewForegroundTab({
+    gBrowser,
+    opening: TEST_PAGE,
+  });
+
+  const { linkedBrowser } = tab;
+  ok(
+    tab.getAttribute("label").includes("file_dummy.html"),
+    "The title should be the raw path"
+  );
+
+  await Promise.all([
+    SpecialPowers.spawn(linkedBrowser, [], function () {
+      content.document.title = "Title";
+    }),
+    untilPageTitleChanged(),
+  ]);
+
+  is(tab.getAttribute("label"), "Title", "The title should change");
+
+  linkedBrowser.reload();
+
+  await untilPageTitleChanged();
+
+  ok(
+    tab.getAttribute("label").includes("file_dummy.html"),
+    "The title should be the raw path again"
+  );
+
+  BrowserTestUtils.removeTab(tab);
+});