third_party/WebKit/Source/platform/scroll/ScrollbarThemeAuraTest.cpp

// 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 "platform/scroll/ScrollbarThemeAura.h"

#include "platform/scroll/ScrollbarTestSuite.h"
#include "platform/testing/TestingPlatformSupport.h"

namespace blink {

using testing::Return;

namespace {

class ScrollbarThemeAuraButtonOverride final : public ScrollbarThemeAura {
 public:
  ScrollbarThemeAuraButtonOverride() : m_hasScrollbarButtons(true) {}

  void setHasScrollbarButtons(bool value) { m_hasScrollbarButtons = value; }

  bool hasScrollbarButtons(ScrollbarOrientation unused) const override {
    return m_hasScrollbarButtons;
  }

 private:
  bool m_hasScrollbarButtons;
};

}  // namespace

using ScrollbarThemeAuraTest = testing::Test;

TEST_F(ScrollbarThemeAuraTest, ButtonSizeHorizontal) {
  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
      platform;

  MockScrollableArea* mockScrollableArea = MockScrollableArea::create();
  ScrollbarThemeMock mockTheme;
  Scrollbar* scrollbar = Scrollbar::createForTesting(
      mockScrollableArea, HorizontalScrollbar, RegularScrollbar, &mockTheme);
  ScrollbarThemeAuraButtonOverride theme;

  IntRect scrollbarSizeNormalDimensions(11, 22, 444, 66);
  scrollbar->setFrameRect(scrollbarSizeNormalDimensions);
  IntSize size1 = theme.buttonSize(*scrollbar);
  EXPECT_EQ(66, size1.width());
  EXPECT_EQ(66, size1.height());

  IntRect scrollbarSizeSquashedDimensions(11, 22, 444, 666);
  scrollbar->setFrameRect(scrollbarSizeSquashedDimensions);
  IntSize size2 = theme.buttonSize(*scrollbar);
  EXPECT_EQ(222, size2.width());
  EXPECT_EQ(666, size2.height());

  ThreadState::current()->collectAllGarbage();
}

TEST_F(ScrollbarThemeAuraTest, ButtonSizeVertical) {
  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
      platform;

  MockScrollableArea* mockScrollableArea = MockScrollableArea::create();
  ScrollbarThemeMock mockTheme;
  Scrollbar* scrollbar = Scrollbar::createForTesting(
      mockScrollableArea, VerticalScrollbar, RegularScrollbar, &mockTheme);
  ScrollbarThemeAuraButtonOverride theme;

  IntRect scrollbarSizeNormalDimensions(11, 22, 44, 666);
  scrollbar->setFrameRect(scrollbarSizeNormalDimensions);
  IntSize size1 = theme.buttonSize(*scrollbar);
  EXPECT_EQ(44, size1.width());
  EXPECT_EQ(44, size1.height());

  IntRect scrollbarSizeSquashedDimensions(11, 22, 444, 666);
  scrollbar->setFrameRect(scrollbarSizeSquashedDimensions);
  IntSize size2 = theme.buttonSize(*scrollbar);
  EXPECT_EQ(444, size2.width());
  EXPECT_EQ(333, size2.height());

  ThreadState::current()->collectAllGarbage();
}

TEST_F(ScrollbarThemeAuraTest, NoButtonsReturnsSize0) {
  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
      platform;

  MockScrollableArea* mockScrollableArea = MockScrollableArea::create();
  ScrollbarThemeMock mockTheme;
  Scrollbar* scrollbar = Scrollbar::createForTesting(
      mockScrollableArea, VerticalScrollbar, RegularScrollbar, &mockTheme);
  ScrollbarThemeAuraButtonOverride theme;
  theme.setHasScrollbarButtons(false);

  scrollbar->setFrameRect(IntRect(1, 2, 3, 4));
  IntSize size = theme.buttonSize(*scrollbar);
  EXPECT_EQ(0, size.width());
  EXPECT_EQ(0, size.height());

  ThreadState::current()->collectAllGarbage();
}

}  // namespace blink