1 files changed, 74 insertions, 0 deletions
diff --git a/browser/base/content/test/sidebar/browser_sidebar_adopt.js b/browser/base/content/test/sidebar/browser_sidebar_adopt.js
new file mode 100644
index 0000000000..344a71cb9b
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+++ b/browser/base/content/test/sidebar/browser_sidebar_adopt.js
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+/* This test checks that the SidebarFocused event doesn't fire in adopted
+ * windows when the sidebar gets opened during window opening, to make sure
+ * that sidebars don't steal focus from the page in this case (Bug 1394207).
+ * There's another case not covered here that has the same expected behavior -
+ * during the initial browser startup - but it would be hard to do with a mochitest. */
+
+registerCleanupFunction(() => {
+  SidebarUI.hide();
+});
+
+function failIfSidebarFocusedFires() {
+  ok(false, "This event shouldn't have fired");
+}
+
+add_setup(function () {
+  CustomizableUI.addWidgetToArea("sidebar-button", "nav-bar");
+  registerCleanupFunction(() =>
+    CustomizableUI.removeWidgetFromArea("sidebar-button")
+  );
+});
+
+add_task(async function testAdoptedTwoWindows() {
+  // First open a new window, show the sidebar in that window, and close it.
+  // Then, open another new window and confirm that the sidebar is closed since it is
+  // being adopted from the main window which doesn't have a shown sidebar. See Bug 1407737.
+  info("Ensure that sidebar state is adopted only from the opener");
+
+  let win1 = await BrowserTestUtils.openNewBrowserWindow();
+  await win1.SidebarUI.show("viewBookmarksSidebar");
+  await BrowserTestUtils.closeWindow(win1);
+
+  let win2 = await BrowserTestUtils.openNewBrowserWindow();
+  ok(
+    !win2.document.getElementById("sidebar-button").hasAttribute("checked"),
+    "Sidebar button isn't checked"
+  );
+  ok(!win2.SidebarUI.isOpen, "Sidebar is closed");
+  await BrowserTestUtils.closeWindow(win2);
+});
+
+add_task(async function testEventsReceivedInMainWindow() {
+  info(
+    "Opening the sidebar and expecting both SidebarShown and SidebarFocused events"
+  );
+
+  let initialShown = BrowserTestUtils.waitForEvent(window, "SidebarShown");
+  let initialFocus = BrowserTestUtils.waitForEvent(window, "SidebarFocused");
+
+  await SidebarUI.show("viewBookmarksSidebar");
+  await initialShown;
+  await initialFocus;
+
+  ok(true, "SidebarShown and SidebarFocused events fired on a new window");
+});
+
+add_task(async function testEventReceivedInNewWindow() {
+  info(
+    "Opening a new window and expecting the SidebarFocused event to not fire"
+  );
+
+  let promiseNewWindow = BrowserTestUtils.waitForNewWindow();
+  let win = OpenBrowserWindow();
+
+  let adoptedShown = BrowserTestUtils.waitForEvent(win, "SidebarShown");
+  win.addEventListener("SidebarFocused", failIfSidebarFocusedFires);
+  registerCleanupFunction(async function () {
+    win.removeEventListener("SidebarFocused", failIfSidebarFocusedFires);
+    await BrowserTestUtils.closeWindow(win);
+  });
+
+  await promiseNewWindow;
+  await adoptedShown;
+  ok(true, "SidebarShown event fired on an adopted window");
+});