// Copyright 2026 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "base/strings/utf_string_conversions.h" #include "base/test/scoped_feature_list.h" #include "base/time/time.h" #include "chrome/browser/ui/tabs/tab_strip_model.h" #include "chrome/browser/ui/views/accessibility/uia_accessibility_event_waiter.h" #include "chrome/browser/ui/views/frame/browser_view.h" #include "chrome/test/base/in_process_browser_test.h" #include "chrome/test/base/ui_test_utils.h" #include "content/public/browser/web_contents.h" #include "content/public/test/accessibility_notification_waiter.h" #include "content/public/test/browser_test.h" #include "content/public/test/browser_test_utils.h" #include "content/public/test/scoped_accessibility_mode_override.h" #include "net/test/embedded_test_server/embedded_test_server.h" #include "third_party/blink/public/common/features.h" #include "ui/aura/window.h" #include "ui/aura/window_tree_host.h" #include namespace { // Test class for verifying that AriaNotify triggers UIA_NotificationEventId. class AriaNotifyUIABrowserTest : public InProcessBrowserTest { public: AriaNotifyUIABrowserTest() { // Enable AriaNotify for the web API so UIA notification events are fired. scoped_feature_list_.InitWithFeatures( /*enabled_features=*/{blink::features::kAriaNotify}, {}); } AriaNotifyUIABrowserTest(const AriaNotifyUIABrowserTest&) = delete; AriaNotifyUIABrowserTest& operator=(const AriaNotifyUIABrowserTest&) = delete; ~AriaNotifyUIABrowserTest() override = default; protected: void SetUpOnMainThread() override { InProcessBrowserTest::SetUpOnMainThread(); ASSERT_TRUE(embedded_test_server()->Start()); scoped_accessibility_mode_.emplace(GetWebContents(), ui::kAXModeComplete); } void TearDownOnMainThread() override { scoped_accessibility_mode_.reset(); } content::WebContents* GetWebContents() const { return browser()->tab_strip_model()->GetActiveWebContents(); } HWND GetWebPageHwnd() const { return browser() ->GetWindow() ->GetNativeWindow() ->GetHost() ->GetAcceleratedWidget(); } void NavigateToHtml(const std::string& html) { GURL url("data:text/html," + html); ASSERT_TRUE(ui_test_utils::NavigateToURL(browser(), url)); } private: base::test::ScopedFeatureList scoped_feature_list_; std::optional scoped_accessibility_mode_; }; // Tests that calling ariaNotify raises a UIA_NotificationEventId event. // This test uses the uia_event_id field to wait directly for the UIA // notification event instead of mapping from ax::mojom::Event. IN_PROC_BROWSER_TEST_F(AriaNotifyUIABrowserTest, AriaNotifyRaisesUIANotificationEvent) { // Create the waiter BEFORE navigation to ensure we don't miss kLoadComplete. content::AccessibilityNotificationWaiter tree_waiter( GetWebContents(), ax::mojom::Event::kLoadComplete); // Load a page with a button that triggers ariaNotify. NavigateToHtml(R"HTML( )HTML"); // Wait for the accessibility tree to be ready. ASSERT_TRUE(tree_waiter.WaitForNotification()); // Set up the UIA event waiter for UIA_NotificationEventId. // NOTE: The waiter must be created AFTER the accessibility tree is ready, // because the UIA event subscriptions can interfere with tree initialization // and cause hangs on Windows. UiaAccessibilityWaiterInfo info = {GetWebPageHwnd(), /*role=*/L"button", /*name=*/L"Notification Trigger", /*event=*/ax::mojom::Event::kNone, /*uia_event_id=*/UIA_NotificationEventId}; UiaAccessibilityEventWaiter waiter(info); // Click the button to trigger ariaNotify. ASSERT_TRUE(ExecJs(GetWebContents(), "document.getElementById('notifyButton').click();")); // Wait for the UIA notification event to be raised. waiter.Wait(); // Verify the notification string was captured correctly. EXPECT_EQ(waiter.GetNotificationString(), L"Test notification message"); } } // namespace