Bug 1440358 - Part 3 - Add tests for reopening a visible Library view. r=Gijs

MozReview-Commit-ID: 3sJDnzUWFbz

--HG--
extra : rebase_source : 17280de3f1733f47e3619145d8289c1e7c548937

browser/components/customizableui/test/browser.ini

@@ -141,6 +141,7 @@ skip-if = os == "linux" # linux doesn't get drag space (no tabsintitlebar)
 [browser_drag_outside_palette.js]
 [browser_exit_background_customize_mode.js]
 [browser_insert_before_moved_node.js]
+[browser_library_after_appMenu.js]
 [browser_overflow_use_subviews.js]
 [browser_panel_keyboard_navigation.js]
 [browser_panel_toggle.js]

browser/components/customizableui/test/browser_library_after_appMenu.js

@@ -0,0 +1,37 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Checks that opening the Library view using the default toolbar button works
+ * also while the view is displayed in the main menu.
+ */
+add_task(async function test_library_after_appMenu() {
+  await PanelUI.show();
+
+  // Show the Library view as a subview of the main menu.
+  let libraryView = document.getElementById("appMenu-libraryView");
+  let promise = BrowserTestUtils.waitForEvent(libraryView, "ViewShown");
+  document.getElementById("appMenu-library-button").click();
+  await promise;
+
+  // Show the Library view as the main view of the Library panel.
+  promise = BrowserTestUtils.waitForEvent(libraryView, "ViewShown");
+  document.getElementById("library-button").click();
+  await promise;
+
+  // Navigate to the History subview.
+  let historyView = document.getElementById("PanelUI-history");
+  promise = BrowserTestUtils.waitForEvent(historyView, "ViewShown");
+  document.getElementById("appMenu-library-history-button").click();
+  await promise;
+
+  Assert.ok(PanelView.forNode(historyView).active);
+
+  // Close the Library panel.
+  let historyPanel = historyView.closest("panel");
+  promise = BrowserTestUtils.waitForEvent(historyPanel, "popuphidden");
+  historyPanel.hidePopup();
+  await promise;
+});