1 files changed, 58 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_sidebar_toggle.js b/browser/components/customizableui/test/browser_sidebar_toggle.js
new file mode 100644
index 0000000000..5742f368ee
--- /dev/null
+++ b/browser/components/customizableui/test/browser_sidebar_toggle.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+registerCleanupFunction(async function () {
+  await resetCustomization();
+
+  // Ensure sidebar is hidden after each test:
+  if (!document.getElementById("sidebar-box").hidden) {
+    SidebarUI.hide();
+  }
+});
+
+var showSidebar = async function (win = window) {
+  let button = win.document.getElementById("sidebar-button");
+  let sidebarFocusedPromise = BrowserTestUtils.waitForEvent(
+    win.document,
+    "SidebarFocused"
+  );
+  EventUtils.synthesizeMouseAtCenter(button, {}, win);
+  await sidebarFocusedPromise;
+  ok(win.SidebarUI.isOpen, "Sidebar is opened");
+  ok(button.hasAttribute("checked"), "Toolbar button is checked");
+};
+
+var hideSidebar = async function (win = window) {
+  let button = win.document.getElementById("sidebar-button");
+  EventUtils.synthesizeMouseAtCenter(button, {}, win);
+  ok(!win.SidebarUI.isOpen, "Sidebar is closed");
+  ok(!button.hasAttribute("checked"), "Toolbar button isn't checked");
+};
+
+// Check the sidebar widget shows the default items
+add_task(async function () {
+  CustomizableUI.addWidgetToArea("sidebar-button", "nav-bar");
+
+  await showSidebar();
+  is(SidebarUI.currentID, "viewBookmarksSidebar", "Default sidebar selected");
+  await SidebarUI.show("viewHistorySidebar");
+
+  await hideSidebar();
+  await showSidebar();
+  is(SidebarUI.currentID, "viewHistorySidebar", "Selected sidebar remembered");
+
+  await hideSidebar();
+  let otherWin = await BrowserTestUtils.openNewBrowserWindow();
+  await showSidebar(otherWin);
+  is(
+    otherWin.SidebarUI.currentID,
+    "viewHistorySidebar",
+    "Selected sidebar remembered across windows"
+  );
+  await hideSidebar(otherWin);
+
+  await BrowserTestUtils.closeWindow(otherWin);
+});