Accessibility Test

// Copyright 2014 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "base/logging.h" #include "content/browser/accessibility/browser_accessibility.h" #include "content/browser/accessibility/browser_accessibility_manager.h" #include "content/browser/web_contents/web_contents_impl.h" #include "content/public/test/browser_test_utils.h" #include "content/public/test/content_browser_test.h" #include "content/public/test/content_browser_test_utils.h" #include "content/public/test/test_utils.h" #include "content/shell/browser/shell.h" #include "content/test/accessibility_browser_test_utils.h" #include "net/dns/mock_host_resolver.h" #include "testing/gtest/include/gtest/gtest.h" namespace content { class AccessibilityHitTestingBrowserTest : public ContentBrowserTest { public: AccessibilityHitTestingBrowserTest() {} ~AccessibilityHitTestingBrowserTest() override {} protected: BrowserAccessibility* HitTestAndWaitForResult(const gfx::Point& point) { WebContentsImpl* web_contents = static_cast(shell()->web_contents()); FrameTree* frame_tree = web_contents->GetFrameTree(); BrowserAccessibilityManager* manager = web_contents->GetRootBrowserAccessibilityManager(); AccessibilityNotificationWaiter hover_waiter( shell()->web_contents(), AccessibilityModeComplete, ui::AX_EVENT_HOVER); for (FrameTreeNode* node : frame_tree->Nodes()) hover_waiter.ListenToAdditionalFrame(node->current_frame_host()); manager->HitTest(point); hover_waiter.WaitForNotification(); RenderFrameHostImpl* target_frame = hover_waiter.event_render_frame_host(); BrowserAccessibilityManager* target_manager = target_frame->browser_accessibility_manager(); int hover_target_id = hover_waiter.event_target_id(); BrowserAccessibility* hovered_node = target_manager->GetFromID(hover_target_id); return hovered_node; } BrowserAccessibility* CallCachingAsyncHitTest(const gfx::Point& point) { WebContentsImpl* web_contents = static_cast(shell()->web_contents()); FrameTree* frame_tree = web_contents->GetFrameTree(); BrowserAccessibilityManager* manager = web_contents->GetRootBrowserAccessibilityManager(); gfx::Point screen_point = point + manager->GetViewBounds().OffsetFromOrigin(); // Each call to CachingAsyncHitTest results in at least one HOVER // event received. Block until we receive it. AccessibilityNotificationWaiter hover_waiter( shell()->web_contents(), AccessibilityModeComplete, ui::AX_EVENT_HOVER); for (FrameTreeNode* node : frame_tree->Nodes()) hover_waiter.ListenToAdditionalFrame(node->current_frame_host()); BrowserAccessibility* result = manager->CachingAsyncHitTest(screen_point); hover_waiter.WaitForNotification(); return result; } }; IN_PROC_BROWSER_TEST_F(AccessibilityHitTestingBrowserTest, HitTestOutsideDocumentBoundsReturnsRoot) { NavigateToURL(shell(), GURL(url::kAboutBlankURL)); // Load the page. AccessibilityNotificationWaiter waiter(shell()->web_contents(), AccessibilityModeComplete, ui::AX_EVENT_LOAD_COMPLETE); const char url_str[] = "data:text/html," "" "Accessibility Test" "" "" "This is some text in a link" "" ""; GURL url(url_str); NavigateToURL(shell(), url); waiter.WaitForNotification(); BrowserAccessibility* hovered_node = HitTestAndWaitForResult(gfx::Point(-1, -1)); ASSERT_TRUE(hovered_node != NULL); ASSERT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, hovered_node->GetRole()); } IN_PROC_BROWSER_TEST_F(AccessibilityHitTestingBrowserTest, HitTestingInIframes) { host_resolver()->AddRule("*", "127.0.0.1"); ASSERT_TRUE(embedded_test_server()->Start()); NavigateToURL(shell(), GURL(url::kAboutBlankURL)); AccessibilityNotificationWaiter waiter(shell()->web_contents(), AccessibilityModeComplete, ui::AX_EVENT_LOAD_COMPLETE); GURL url(embedded_test_server()->GetURL( "/accessibility/html/iframe-coordinates.html")); NavigateToURL(shell(), url); waiter.WaitForNotification(); WaitForAccessibilityTreeToContainNodeWithName( shell()->web_contents(), "Ordinary Button"); WaitForAccessibilityTreeToContainNodeWithName( shell()->web_contents(), "Scrolled Button"); // Send a series of hit test requests, and for each one // wait for the hover event in response, verifying we hit the // correct object. // (50, 50) -> "Button" BrowserAccessibility* hovered_node; hovered_node = HitTestAndWaitForResult(gfx::Point(50, 50)); ASSERT_TRUE(hovered_node != NULL); ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); ASSERT_EQ("Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME)); // (50, 305) -> div in first iframe hovered_node = HitTestAndWaitForResult(gfx::Point(50, 305)); ASSERT_TRUE(hovered_node != NULL); ASSERT_EQ(ui::AX_ROLE_DIV, hovered_node->GetRole()); // (50, 350) -> "Ordinary Button" hovered_node = HitTestAndWaitForResult(gfx::Point(50, 350)); ASSERT_TRUE(hovered_node != NULL); ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); ASSERT_EQ("Ordinary Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME)); // (50, 455) -> "Scrolled Button" hovered_node = HitTestAndWaitForResult(gfx::Point(50, 455)); ASSERT_TRUE(hovered_node != NULL); ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); ASSERT_EQ("Scrolled Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME)); // (50, 505) -> div in second iframe hovered_node = HitTestAndWaitForResult(gfx::Point(50, 505)); ASSERT_TRUE(hovered_node != NULL); ASSERT_EQ(ui::AX_ROLE_DIV, hovered_node->GetRole()); } IN_PROC_BROWSER_TEST_F(AccessibilityHitTestingBrowserTest, CachingAsyncHitTestingInIframes) { host_resolver()->AddRule("*", "127.0.0.1"); ASSERT_TRUE(embedded_test_server()->Start()); NavigateToURL(shell(), GURL(url::kAboutBlankURL)); AccessibilityNotificationWaiter waiter(shell()->web_contents(), AccessibilityModeComplete, ui::AX_EVENT_LOAD_COMPLETE); GURL url(embedded_test_server()->GetURL( "/accessibility/hit_testing/hit_testing.html")); NavigateToURL(shell(), url); waiter.WaitForNotification(); WaitForAccessibilityTreeToContainNodeWithName( shell()->web_contents(), "Ordinary Button"); WaitForAccessibilityTreeToContainNodeWithName( shell()->web_contents(), "Scrolled Button"); // For each point we try, the first time we call CachingAsyncHitTest it // should FAIL and return the wrong object, because this test page has // been designed to confound local synchronous hit testing using // z-indexes. However, calling CachingAsyncHitTest a second time should // return the correct result (since CallCachingAsyncHitTest waits for the // HOVER event to be received). // (50, 50) -> "Button" BrowserAccessibility* hovered_node; hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 50)); ASSERT_TRUE(hovered_node != NULL); ASSERT_NE(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 50)); ASSERT_EQ("Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME)); // (50, 305) -> div in first iframe hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 305)); ASSERT_TRUE(hovered_node != NULL); ASSERT_NE(ui::AX_ROLE_DIV, hovered_node->GetRole()); hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 305)); ASSERT_EQ(ui::AX_ROLE_DIV, hovered_node->GetRole()); // (50, 350) -> "Ordinary Button" hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 350)); ASSERT_TRUE(hovered_node != NULL); ASSERT_NE(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 350)); ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); ASSERT_EQ("Ordinary Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME)); // (50, 455) -> "Scrolled Button" hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 455)); ASSERT_TRUE(hovered_node != NULL); ASSERT_NE(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 455)); ASSERT_EQ(ui::AX_ROLE_BUTTON, hovered_node->GetRole()); ASSERT_EQ("Scrolled Button", hovered_node->GetStringAttribute(ui::AX_ATTR_NAME)); // (50, 505) -> div in second iframe hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 505)); ASSERT_TRUE(hovered_node != NULL); ASSERT_NE(ui::AX_ROLE_DIV, hovered_node->GetRole()); hovered_node = CallCachingAsyncHitTest(gfx::Point(50, 505)); ASSERT_EQ(ui::AX_ROLE_DIV, hovered_node->GetRole()); } } // namespace content