ui/views/accessibility/native_view_accessibility_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/strings/utf_string_conversions.h"
   6 #include "ui/accessibility/ax_view_state.h"
   7 #include "ui/views/accessibility/native_view_accessibility.h"
   8 #include "ui/views/controls/button/button.h"
   9 #include "ui/views/controls/label.h"
  10 #include "ui/views/test/views_test_base.h"
  11
  12 namespace views {
  13 namespace test {
  14
  15 class NativeViewAccessibilityTest;
  16
  17 namespace {
  18
  19 class TestButton : public Button {
  20  public:
  21   TestButton() : Button(NULL) {}
  22 };
  23
  24 }  // namespace
  25
  26 class NativeViewAccessibilityTest : public ViewsTestBase {
  27  public:
  28   NativeViewAccessibilityTest() {}
  29   ~NativeViewAccessibilityTest() override {}
  30
  31   void SetUp() override {
  32     ViewsTestBase::SetUp();
  33     button_.reset(new TestButton());
  34     button_->SetSize(gfx::Size(20, 20));
  35     button_accessibility_ = NativeViewAccessibility::Create(button_.get());
  36
  37     label_.reset(new Label);
  38     button_->AddChildView(label_.get());
  39     label_accessibility_ = NativeViewAccessibility::Create(label_.get());
  40   }
  41
  42   void TearDown() override {
  43     button_accessibility_->Destroy();
  44     button_accessibility_ = NULL;
  45     label_accessibility_->Destroy();
  46     label_accessibility_ = NULL;
  47     ViewsTestBase::TearDown();
  48   }
  49
  50  protected:
  51   scoped_ptr<TestButton> button_;
  52   NativeViewAccessibility* button_accessibility_;
  53   scoped_ptr<Label> label_;
  54   NativeViewAccessibility* label_accessibility_;
  55 };
  56
  57 TEST_F(NativeViewAccessibilityTest, RoleShouldMatch) {
  58   EXPECT_EQ(ui::AX_ROLE_BUTTON, button_accessibility_->GetData().role);
  59   EXPECT_EQ(ui::AX_ROLE_STATIC_TEXT, label_accessibility_->GetData().role);
  60 }
  61
  62 TEST_F(NativeViewAccessibilityTest, BoundsShouldMatch) {
  63   gfx::Rect bounds = button_accessibility_->GetData().location;
  64   bounds.Offset(button_accessibility_->GetGlobalCoordinateOffset());
  65   EXPECT_EQ(button_->GetBoundsInScreen(), bounds);
  66 }
  67
  68 TEST_F(NativeViewAccessibilityTest, LabelIsChildOfButton) {
  69   EXPECT_EQ(1, button_accessibility_->GetChildCount());
  70   EXPECT_EQ(label_->GetNativeViewAccessible(),
  71             button_accessibility_->ChildAtIndex(0));
  72   EXPECT_EQ(button_->GetNativeViewAccessible(),
  73             label_accessibility_->GetParent());
  74 }
  75
  76 // Subclass of NativeViewAccessibility that destroys itself when its
  77 // parent widget is destroyed, for the purposes of making sure this
  78 // doesn't lead to a crash.
  79 class TestNativeViewAccessibility : public NativeViewAccessibility {
  80  public:
  81   explicit TestNativeViewAccessibility(View* view)
  82       : NativeViewAccessibility(view) {}
  83
  84   void OnWidgetDestroying(Widget* widget) override {
  85     bool is_destroying_parent_widget = (parent_widget_ == widget);
  86     NativeViewAccessibility::OnWidgetDestroying(widget);
  87     if (is_destroying_parent_widget)
  88       delete this;
  89   }
  90 };
  91
  92 TEST_F(NativeViewAccessibilityTest, CrashOnWidgetDestroyed) {
  93   scoped_ptr<Widget> parent_widget(new Widget);
  94   Widget::InitParams params = CreateParams(Widget::InitParams::TYPE_POPUP);
  95   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
  96   params.bounds = gfx::Rect(50, 50, 650, 650);
  97   parent_widget->Init(params);
  98
  99   scoped_ptr<Widget> child_widget(new Widget);
 100   child_widget->Init(params);
 101
 102   // Make sure that deleting the parent widget can't cause a crash
 103   // due to NativeViewAccessibility not unregistering itself as a
 104   // WidgetObserver. Note that TestNativeViewAccessibility is a subclass
 105   // defined above that destroys itself when its parent widget is destroyed.
 106   TestNativeViewAccessibility* child_accessible =
 107       new TestNativeViewAccessibility(child_widget->GetRootView());
 108   child_accessible->SetParentWidget(parent_widget.get());
 109   parent_widget.reset();
 110 }
 111
 112 }  // namespace test
 113 }  // namespace views