1 files changed, 32 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_tabbar_big_widgets.js b/browser/components/customizableui/test/browser_tabbar_big_widgets.js
new file mode 100644
index 0000000000..3722ea9cdc
--- /dev/null
+++ b/browser/components/customizableui/test/browser_tabbar_big_widgets.js
@@ -0,0 +1,32 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const kButtonId = "test-tabbar-size-with-large-buttons";
+
+function test() {
+  registerCleanupFunction(cleanup);
+  let titlebar = document.getElementById("titlebar");
+  let originalHeight = titlebar.getBoundingClientRect().height;
+  let button = document.createXULElement("toolbarbutton");
+  button.id = kButtonId;
+  button.setAttribute("style", "min-height: 100px");
+  gNavToolbox.palette.appendChild(button);
+  CustomizableUI.addWidgetToArea(kButtonId, CustomizableUI.AREA_TABSTRIP);
+  let currentHeight = titlebar.getBoundingClientRect().height;
+  ok(currentHeight > originalHeight, "Titlebar should have grown");
+  CustomizableUI.removeWidgetFromArea(kButtonId);
+  currentHeight = titlebar.getBoundingClientRect().height;
+  is(
+    currentHeight,
+    originalHeight,
+    "Titlebar should have gone back to its original size."
+  );
+}
+
+function cleanup() {
+  let btn = document.getElementById(kButtonId);
+  if (btn) {
+    btn.remove();
+  }
+}