1 files changed, 54 insertions, 0 deletions
diff --git a/browser/components/sessionstore/test/browser_page_title.js b/browser/components/sessionstore/test/browser_page_title.js
new file mode 100644
index 0000000000..9f84e67a94
--- /dev/null
+++ b/browser/components/sessionstore/test/browser_page_title.js
@@ -0,0 +1,54 @@
+"use strict";
+
+const URL = "data:text/html,<title>initial title</title>";
+
+add_task(async function () {
+  // Create a new tab.
+  let tab = BrowserTestUtils.addTab(gBrowser, URL);
+  await promiseBrowserLoaded(tab.linkedBrowser);
+
+  // Remove the tab.
+  await promiseRemoveTabAndSessionState(tab);
+
+  // Check the title.
+  let [
+    {
+      state: { entries },
+    },
+  ] = ss.getClosedTabDataForWindow(window);
+  is(entries[0].title, "initial title", "correct title");
+});
+
+add_task(async function () {
+  // Create a new tab.
+  let tab = BrowserTestUtils.addTab(gBrowser, URL);
+  let browser = tab.linkedBrowser;
+  await promiseBrowserLoaded(browser);
+
+  // Flush to ensure we collected the initial title.
+  await TabStateFlusher.flush(browser);
+
+  // Set a new title.
+  await SpecialPowers.spawn(browser, [], async function () {
+    return new Promise(resolve => {
+      docShell.chromeEventHandler.addEventListener(
+        "DOMTitleChanged",
+        () => resolve(),
+        { once: true }
+      );
+
+      content.document.title = "new title";
+    });
+  });
+
+  // Remove the tab.
+  await promiseRemoveTabAndSessionState(tab);
+
+  // Check the title.
+  let [
+    {
+      state: { entries },
+    },
+  ] = ss.getClosedTabDataForWindow(window);
+  is(entries[0].title, "new title", "correct title");
+});