1 files changed, 33 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_bug882977.js b/browser/base/content/test/general/browser_bug882977.js
new file mode 100644
index 0000000000..116f01b349
--- /dev/null
+++ b/browser/base/content/test/general/browser_bug882977.js
@@ -0,0 +1,33 @@
+"use strict";
+
+/**
+ * Tests that the identity-box shows the chromeUI styling
+ * when viewing such a page in a new window.
+ */
+add_task(async function () {
+  let homepage = "about:preferences";
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.startup.homepage", homepage],
+      ["browser.startup.page", 1],
+    ],
+  });
+
+  let win = OpenBrowserWindow();
+  await BrowserTestUtils.firstBrowserLoaded(win, false);
+
+  let browser = win.gBrowser.selectedBrowser;
+  is(browser.currentURI.spec, homepage, "Loaded the correct homepage");
+  checkIdentityMode(win);
+
+  await BrowserTestUtils.closeWindow(win);
+});
+
+function checkIdentityMode(win) {
+  let identityMode = win.document.getElementById("identity-box").className;
+  is(
+    identityMode,
+    "chromeUI",
+    "Identity state should be chromeUI for about:home in a new window"
+  );
+}