1 files changed, 64 insertions, 0 deletions
diff --git a/browser/components/extensions/test/browser/browser_ext_tabs_move_window_multiple.js b/browser/components/extensions/test/browser/browser_ext_tabs_move_window_multiple.js
new file mode 100644
index 0000000000..62fe12aeb4
--- /dev/null
+++ b/browser/components/extensions/test/browser/browser_ext_tabs_move_window_multiple.js
@@ -0,0 +1,64 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+add_task(async function () {
+  let extension = ExtensionTestUtils.loadExtension({
+    manifest: {
+      permissions: ["tabs"],
+    },
+
+    async background() {
+      const URL = "http://example.com/";
+      let mainWin = await browser.windows.getCurrent();
+      let tab1 = await browser.tabs.create({ url: URL });
+      let tab2 = await browser.tabs.create({ url: URL });
+
+      let newWin = await browser.windows.create({ url: [URL, URL] });
+      browser.test.assertEq(newWin.tabs.length, 2, "New window has 2 tabs");
+      let [tab3, tab4] = newWin.tabs;
+
+      // move tabs in both windows to index 0 in a single call
+      await browser.tabs.move([tab2.id, tab4.id], { index: 0 });
+
+      tab1 = await browser.tabs.get(tab1.id);
+      browser.test.assertEq(
+        tab1.windowId,
+        mainWin.id,
+        "tab 1 is still in main window"
+      );
+
+      tab2 = await browser.tabs.get(tab2.id);
+      browser.test.assertEq(
+        tab2.windowId,
+        mainWin.id,
+        "tab 2 is still in main window"
+      );
+      browser.test.assertEq(tab2.index, 0, "tab 2 moved to index 0");
+
+      tab3 = await browser.tabs.get(tab3.id);
+      browser.test.assertEq(
+        tab3.windowId,
+        newWin.id,
+        "tab 3 is still in new window"
+      );
+
+      tab4 = await browser.tabs.get(tab4.id);
+      browser.test.assertEq(
+        tab4.windowId,
+        newWin.id,
+        "tab 4 is still in new window"
+      );
+      browser.test.assertEq(tab4.index, 0, "tab 4 moved to index 0");
+
+      await browser.tabs.remove([tab1.id, tab2.id]);
+      await browser.windows.remove(newWin.id);
+
+      browser.test.notifyPass("tabs.move.multiple");
+    },
+  });
+
+  await extension.startup();
+  await extension.awaitFinish("tabs.move.multiple");
+  await extension.unload();
+});