Accessibility Test

// Copyright (c) 2010 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 #include #include "base/utf_string_conversions.h" #include "chrome/browser/browser_window.h" #include "chrome/browser/ui/browser.h" #include "chrome/common/render_messages.h" #include "chrome/common/notification_type.h" #include "chrome/test/in_process_browser_test.h" #include "chrome/test/ui_test_utils.h" #include "content/browser/renderer_host/render_view_host.h" #include "content/browser/renderer_host/render_widget_host.h" #include "content/browser/renderer_host/render_widget_host_view.h" #include "content/browser/tab_contents/tab_contents.h" #if defined(OS_WIN) #include #include #endif using webkit_glue::WebAccessibility; namespace { class RendererAccessibilityBrowserTest : public InProcessBrowserTest { public: RendererAccessibilityBrowserTest() {} // Tell the renderer to send an accessibility tree, then wait for the // notification that it's been received. const WebAccessibility& GetWebAccessibilityTree() { RenderWidgetHostView* host_view = browser()->GetSelectedTabContents()->GetRenderWidgetHostView(); RenderWidgetHost* host = host_view->GetRenderWidgetHost(); RenderViewHost* view_host = static_cast(host); view_host->set_save_accessibility_tree_for_testing(true); view_host->EnableRendererAccessibility(); ui_test_utils::WaitForNotification( NotificationType::RENDER_VIEW_HOST_ACCESSIBILITY_TREE_UPDATED); return view_host->accessibility_tree(); } // InProcessBrowserTest void SetUpInProcessBrowserTestFixture(); void TearDownInProcessBrowserTestFixture(); protected: std::string GetAttr(const WebAccessibility& node, const WebAccessibility::Attribute attr); }; void RendererAccessibilityBrowserTest::SetUpInProcessBrowserTestFixture() { #if defined(OS_WIN) // ATL needs a pointer to a COM module. static CComModule module; _pAtlModule = &module; // Make sure COM is initialized for this thread; it's safe to call twice. ::CoInitialize(NULL); #endif } void RendererAccessibilityBrowserTest::TearDownInProcessBrowserTestFixture() { #if defined(OS_WIN) ::CoUninitialize(); #endif } // Convenience method to get the value of a particular WebAccessibility // node attribute as a UTF-8 const char*. std::string RendererAccessibilityBrowserTest::GetAttr( const WebAccessibility& node, const WebAccessibility::Attribute attr) { std::map::const_iterator iter = node.attributes.find(attr); if (iter != node.attributes.end()) return UTF16ToUTF8(iter->second); else return ""; } IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest, CrossPlatformWebpageAccessibility) { // Create a data url and load it. const char url_str[] = "data:text/html," "" "Accessibility Test" "" ""; GURL url(url_str); browser()->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED); const WebAccessibility& tree = GetWebAccessibilityTree(); // Check properties of the root element of the tree. EXPECT_STREQ(url_str, GetAttr(tree, WebAccessibility::ATTR_DOC_URL).c_str()); EXPECT_STREQ( "Accessibility Test", GetAttr(tree, WebAccessibility::ATTR_DOC_TITLE).c_str()); EXPECT_STREQ( "html", GetAttr(tree, WebAccessibility::ATTR_DOC_DOCTYPE).c_str()); EXPECT_STREQ( "text/html", GetAttr(tree, WebAccessibility::ATTR_DOC_MIMETYPE).c_str()); EXPECT_STREQ("Accessibility Test", UTF16ToUTF8(tree.name).c_str()); EXPECT_EQ(WebAccessibility::ROLE_WEB_AREA, tree.role); // Check properites of the BODY element. ASSERT_EQ(1U, tree.children.size()); const WebAccessibility& body = tree.children[0]; EXPECT_EQ(WebAccessibility::ROLE_GROUP, body.role); EXPECT_STREQ("body", GetAttr(body, WebAccessibility::ATTR_HTML_TAG).c_str()); EXPECT_STREQ("block", GetAttr(body, WebAccessibility::ATTR_DISPLAY).c_str()); // Check properties of the two children of the BODY element. ASSERT_EQ(2U, body.children.size()); const WebAccessibility& button = body.children[0]; EXPECT_EQ(WebAccessibility::ROLE_BUTTON, button.role); EXPECT_STREQ( "input", GetAttr(button, WebAccessibility::ATTR_HTML_TAG).c_str()); EXPECT_STREQ("push", UTF16ToUTF8(button.name).c_str()); EXPECT_STREQ( "inline-block", GetAttr(button, WebAccessibility::ATTR_DISPLAY).c_str()); ASSERT_EQ(2U, button.html_attributes.size()); EXPECT_STREQ("type", UTF16ToUTF8(button.html_attributes[0].first).c_str()); EXPECT_STREQ("button", UTF16ToUTF8(button.html_attributes[0].second).c_str()); EXPECT_STREQ("value", UTF16ToUTF8(button.html_attributes[1].first).c_str()); EXPECT_STREQ("push", UTF16ToUTF8(button.html_attributes[1].second).c_str()); const WebAccessibility& checkbox = body.children[1]; EXPECT_EQ(WebAccessibility::ROLE_CHECKBOX, checkbox.role); EXPECT_STREQ( "input", GetAttr(checkbox, WebAccessibility::ATTR_HTML_TAG).c_str()); EXPECT_STREQ( "inline-block", GetAttr(checkbox, WebAccessibility::ATTR_DISPLAY).c_str()); ASSERT_EQ(1U, checkbox.html_attributes.size()); EXPECT_STREQ( "type", UTF16ToUTF8(checkbox.html_attributes[0].first).c_str()); EXPECT_STREQ( "checkbox", UTF16ToUTF8(checkbox.html_attributes[0].second).c_str()); } IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest, CrossPlatformUnselectedEditableTextAccessibility) { // Create a data url and load it. const char url_str[] = "data:text/html," "" "" "" ""; GURL url(url_str); browser()->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED); const WebAccessibility& tree = GetWebAccessibilityTree(); ASSERT_EQ(1U, tree.children.size()); const WebAccessibility& body = tree.children[0]; ASSERT_EQ(1U, body.children.size()); const WebAccessibility& text = body.children[0]; EXPECT_EQ(WebAccessibility::ROLE_TEXT_FIELD, text.role); EXPECT_STREQ( "input", GetAttr(text, WebAccessibility::ATTR_HTML_TAG).c_str()); EXPECT_STREQ( "0", GetAttr(text, WebAccessibility::ATTR_TEXT_SEL_START).c_str()); EXPECT_STREQ( "0", GetAttr(text, WebAccessibility::ATTR_TEXT_SEL_END).c_str()); EXPECT_STREQ("Hello, world.", UTF16ToUTF8(text.value).c_str()); // TODO(dmazzoni): as soon as more accessibility code is cross-platform, // this code should test that the accessible info is dynamically updated // if the selection or value changes. } IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest, CrossPlatformSelectedEditableTextAccessibility) { // Create a data url and load it. const char url_str[] = "data:text/html," "" "" "" ""; GURL url(url_str); browser()->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED); const WebAccessibility& tree = GetWebAccessibilityTree(); ASSERT_EQ(1U, tree.children.size()); const WebAccessibility& body = tree.children[0]; ASSERT_EQ(1U, body.children.size()); const WebAccessibility& text = body.children[0]; EXPECT_EQ(WebAccessibility::ROLE_TEXT_FIELD, text.role); EXPECT_STREQ( "input", GetAttr(text, WebAccessibility::ATTR_HTML_TAG).c_str()); EXPECT_STREQ( "0", GetAttr(text, WebAccessibility::ATTR_TEXT_SEL_START).c_str()); EXPECT_STREQ( "13", GetAttr(text, WebAccessibility::ATTR_TEXT_SEL_END).c_str()); EXPECT_STREQ("Hello, world.", UTF16ToUTF8(text.value).c_str()); } IN_PROC_BROWSER_TEST_F(RendererAccessibilityBrowserTest, CrossPlatformMultipleInheritanceAccessibility) { // In a WebKit accessibility render tree for a table, each cell is a // child of both a row and a column, so it appears to use multiple // inheritance. Make sure that the WebAccessibilityObject tree only // keeps one copy of each cell, and uses an indirect child id for the // additional reference to it. const char url_str[] = "data:text/html," "" "

"; GURL url(url_str); browser()->OpenURL(url, GURL(), CURRENT_TAB, PageTransition::TYPED); const WebAccessibility& tree = GetWebAccessibilityTree(); ASSERT_EQ(1U, tree.children.size()); const WebAccessibility& table = tree.children[0]; EXPECT_EQ(WebAccessibility::ROLE_TABLE, table.role); const WebAccessibility& row = table.children[0]; EXPECT_EQ(WebAccessibility::ROLE_ROW, row.role); const WebAccessibility& cell1 = row.children[0]; EXPECT_EQ(WebAccessibility::ROLE_CELL, cell1.role); const WebAccessibility& cell2 = row.children[1]; EXPECT_EQ(WebAccessibility::ROLE_CELL, cell2.role); const WebAccessibility& column1 = table.children[1]; EXPECT_EQ(WebAccessibility::ROLE_COLUMN, column1.role); EXPECT_EQ(0U, column1.children.size()); EXPECT_EQ(1U, column1.indirect_child_ids.size()); EXPECT_EQ(cell1.id, column1.indirect_child_ids[0]); const WebAccessibility& column2 = table.children[2]; EXPECT_EQ(WebAccessibility::ROLE_COLUMN, column2.role); EXPECT_EQ(0U, column2.children.size()); EXPECT_EQ(1U, column2.indirect_child_ids.size()); EXPECT_EQ(cell2.id, column2.indirect_child_ids[0]); } } // namespace