Added material design mouse hover feedback support.

ui/views/animation/ink_drop_hover_unittest.cc

+// Copyright 2015 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 "ui/views/animation/ink_drop_hover.h"
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/compositor/scoped_animation_duration_scale_mode.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace views {
+namespace test {
+
+class InkDropHoverTest : public testing::Test {
+ public:
+  InkDropHoverTest();
+  ~InkDropHoverTest() override;
+
+ protected:
+  scoped_ptr<InkDropHover> CreateInkDropHover() const;
+
+ private:
+  // Enables zero duration animations during the tests.
+  scoped_ptr<ui::ScopedAnimationDurationScaleMode> zero_duration_mode_;
+
+  DISALLOW_COPY_AND_ASSIGN(InkDropHoverTest);
+};
+
+InkDropHoverTest::InkDropHoverTest() {
+  zero_duration_mode_.reset(new ui::ScopedAnimationDurationScaleMode(
+      ui::ScopedAnimationDurationScaleMode::ZERO_DURATION));
+}
+
+InkDropHoverTest::~InkDropHoverTest() {}
+
+scoped_ptr<InkDropHover> InkDropHoverTest::CreateInkDropHover() const {
+  return make_scoped_ptr(new InkDropHover(gfx::Size(10, 10), 3));
+}
+
+TEST_F(InkDropHoverTest, InitialStateAfterConstruction) {
+  scoped_ptr<InkDropHover> ink_drop_hover = CreateInkDropHover();
+  EXPECT_FALSE(ink_drop_hover->IsVisible());
+}
+
+TEST_F(InkDropHoverTest, IsHoveredStateTransitions) {
+  scoped_ptr<InkDropHover> ink_drop_hover = CreateInkDropHover();
+
+  ink_drop_hover->FadeIn(base::TimeDelta::FromMilliseconds(0));
+  EXPECT_TRUE(ink_drop_hover->IsVisible());
+
+  ink_drop_hover->FadeOut(base::TimeDelta::FromMilliseconds(0));
+  EXPECT_FALSE(ink_drop_hover->IsVisible());
+}
+
+}  // namespace test
+}  // namespace views