1 files changed, 24 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_open_from_popup.js b/browser/components/customizableui/test/browser_open_from_popup.js
new file mode 100644
index 0000000000..bf140fde79
--- /dev/null
+++ b/browser/components/customizableui/test/browser_open_from_popup.js
@@ -0,0 +1,24 @@
+"use strict";
+
+/**
+ * Check that opening customize mode in a popup opens it in the main window.
+ */
+add_task(async function open_customize_mode_from_popup() {
+  let promiseWindow = BrowserTestUtils.waitForNewWindow();
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [], function () {
+    content.window.open("about:blank", "_blank", "height=300,toolbar=no");
+  });
+  let win = await promiseWindow;
+  let customizePromise = BrowserTestUtils.waitForEvent(
+    gNavToolbox,
+    "customizationready"
+  );
+  win.gCustomizeMode.enter();
+  await customizePromise;
+  ok(
+    document.documentElement.hasAttribute("customizing"),
+    "Should have opened customize mode in the parent window"
+  );
+  await endCustomizing();
+  await BrowserTestUtils.closeWindow(win);
+});