Mac a11y: Add Help, TopLevelUIElement, and Window accessibility attributes.

ui/views/widget/native_widget_mac_accessibility_unittest.mm

 // Copyright 2016 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 <memory>
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #import "testing/gtest_mac.h"
 #include "ui/accessibility/ax_enums.h"
 #include "ui/accessibility/ax_view_state.h"
 #import "ui/accessibility/platform/ax_platform_node_mac.h"
 #include "ui/base/ime/text_input_type.h"
 #import "ui/gfx/mac/coordinate_conversion.h"
+#include "ui/views/controls/label.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/test/widget_test.h"
 #include "ui/views/widget/widget.h"
 
 // Expose some methods from AXPlatformNodeCocoa for testing purposes only.
 @interface AXPlatformNodeCocoa (Testing)
 - (NSString*)AXRole;
 @end
 
 namespace views {
@@ skipping 134 matching lines @@
 
   // Check the attribute is updated when the Widget is moved.
   gfx::Rect new_bounds(60, 80, 100, 100);
   widget()->SetBounds(new_bounds);
   widget_origin = [NSValue
       valueWithPoint:gfx::ScreenPointToNSPoint(new_bounds.bottom_left())];
   EXPECT_NSEQ(widget_origin,
               AttributeValueAtMidpoint(NSAccessibilityPositionAttribute));
 }
 
+// Test for NSAccessibilityHelpAttribute.
+TEST_F(NativeWidgetMacAccessibilityTest, HelpAttribute) {
+  Label* label = new Label(base::SysNSStringToUTF16(kTestPlaceholderText));
+  label->SetSize(GetWidgetBounds().size());
+  EXPECT_NSEQ(nil, AttributeValueAtMidpoint(NSAccessibilityHelpAttribute));
+  label->SetTooltipText(base::SysNSStringToUTF16(kTestPlaceholderText));
+  widget()->GetContentsView()->AddChildView(label);
+  EXPECT_NSEQ(kTestPlaceholderText,
+              AttributeValueAtMidpoint(NSAccessibilityHelpAttribute));
+}
+
+// Test for NSAccessibilityWindowAttribute and
+// NSAccessibilityTopLevelUIElementAttribute.
+TEST_F(NativeWidgetMacAccessibilityTest, WindowAndTopLevelUIElementAttributes) {
+  FlexibleRoleTestView* view = new FlexibleRoleTestView(ui::AX_ROLE_GROUP);
+  view->SetSize(GetWidgetBounds().size());
+  widget()->GetContentsView()->AddChildView(view);
+  // Make sure it's |view| in the hit test by checking its accessibility role.
+  EXPECT_EQ(NSAccessibilityGroupRole,
+            AttributeValueAtMidpoint(NSAccessibilityRoleAttribute));
+  EXPECT_NSEQ(widget()->GetNativeWindow(),
+              AttributeValueAtMidpoint(NSAccessibilityWindowAttribute));
+  EXPECT_NSEQ(
+      widget()->GetNativeWindow(),
+      AttributeValueAtMidpoint(NSAccessibilityTopLevelUIElementAttribute));
+}
+
 // Tests for accessibility attributes on a views::Textfield.
 // TODO(patricialor): Test against Cocoa-provided attributes as well to ensure
 // consistency between Cocoa and toolkit-views.
 TEST_F(NativeWidgetMacAccessibilityTest, TextfieldGenericAttributes) {
   Textfield* textfield = AddChildTextfield(GetWidgetBounds().size());
 
   // NSAccessibilityEnabledAttribute.
   textfield->SetEnabled(false);
   EXPECT_EQ(NO, [AttributeValueAtMidpoint(NSAccessibilityEnabledAttribute)
                     boolValue]);
@@ skipping 89 matching lines @@
             gfx::Range([AttributeValueAtMidpoint(
                 NSAccessibilitySelectedTextRangeAttribute) rangeValue]));
 
   // NSAccessibilityVisibleCharacterRangeAttribute.
   EXPECT_EQ(gfx::Range(0, kTestStringValue.length),
             gfx::Range([AttributeValueAtMidpoint(
                 NSAccessibilityVisibleCharacterRangeAttribute) rangeValue]));
 }
 
 }  // namespace views