1 files changed, 42 insertions, 0 deletions
diff --git a/browser/base/content/test/tabs/browser_replacewithwindow_commands.js b/browser/base/content/test/tabs/browser_replacewithwindow_commands.js
new file mode 100644
index 0000000000..1e6f2b8f57
--- /dev/null
+++ b/browser/base/content/test/tabs/browser_replacewithwindow_commands.js
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// This test verifies that focus is handled correctly when a
+// tab is dragged out to a new window, by checking that the
+// copy and select all commands are enabled properly.
+add_task(async function () {
+  let tab1 = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "https://www.example.com"
+  );
+  let tab2 = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "https://www.example.com"
+  );
+
+  let delayedStartupPromise = BrowserTestUtils.waitForNewWindow();
+  let win = gBrowser.replaceTabWithWindow(tab2);
+  await delayedStartupPromise;
+
+  let copyCommand = win.document.getElementById("cmd_copy");
+  info("Waiting for copy to be enabled");
+  await BrowserTestUtils.waitForMutationCondition(
+    copyCommand,
+    { attributes: true },
+    () => {
+      return !copyCommand.hasAttribute("disabled");
+    }
+  );
+
+  ok(
+    !win.document.getElementById("cmd_copy").hasAttribute("disabled"),
+    "copy is enabled"
+  );
+  ok(
+    !win.document.getElementById("cmd_selectAll").hasAttribute("disabled"),
+    "select all is enabled"
+  );
+
+  await BrowserTestUtils.closeWindow(win);
+  await BrowserTestUtils.removeTab(tab1);
+});