CC Animation: Move files from cc_blink to Source/platform/animation

third_party/WebKit/Source/platform/animation/CompositorFloatAnimationCurveTest.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/animation/CompositorFloatAnimationCurve.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "cc/animation/timing_function.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using blink::CompositorAnimationCurve;
+using blink::CompositorFloatAnimationCurve;
+using blink::CompositorFloatKeyframe;
+
+namespace blink {
+
+// Tests that a float animation with one keyframe works as expected.
+TEST(WebFloatAnimationCurveTest, OneFloatKeyframe)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 2),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1));
+    EXPECT_FLOAT_EQ(2, curve->getValue(0));
+    EXPECT_FLOAT_EQ(2, curve->getValue(0.5));
+    EXPECT_FLOAT_EQ(2, curve->getValue(1));
+    EXPECT_FLOAT_EQ(2, curve->getValue(2));
+}
+
+// Tests that a float animation with two keyframes works as expected.
+TEST(WebFloatAnimationCurveTest, TwoFloatKeyframe)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 2),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(1, 4),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1));
+    EXPECT_FLOAT_EQ(2, curve->getValue(0));
+    EXPECT_FLOAT_EQ(3, curve->getValue(0.5));
+    EXPECT_FLOAT_EQ(4, curve->getValue(1));
+    EXPECT_FLOAT_EQ(4, curve->getValue(2));
+}
+
+// Tests that a float animation with three keyframes works as expected.
+TEST(WebFloatAnimationCurveTest, ThreeFloatKeyframe)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 2),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(1, 4),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(2, 8),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1));
+    EXPECT_FLOAT_EQ(2, curve->getValue(0));
+    EXPECT_FLOAT_EQ(3, curve->getValue(0.5));
+    EXPECT_FLOAT_EQ(4, curve->getValue(1));
+    EXPECT_FLOAT_EQ(6, curve->getValue(1.5));
+    EXPECT_FLOAT_EQ(8, curve->getValue(2));
+    EXPECT_FLOAT_EQ(8, curve->getValue(3));
+}
+
+// Tests that a float animation with multiple keys at a given time works sanely.
+TEST(WebFloatAnimationCurveTest, RepeatedFloatKeyTimes)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 4),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(1, 4),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(1, 6),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(2, 6),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(4, curve->getValue(-1));
+    EXPECT_FLOAT_EQ(4, curve->getValue(0));
+    EXPECT_FLOAT_EQ(4, curve->getValue(0.5));
+
+    // There is a discontinuity at 1. Any value between 4 and 6 is valid.
+    float value = curve->getValue(1);
+    EXPECT_TRUE(value >= 4 && value <= 6);
+
+    EXPECT_FLOAT_EQ(6, curve->getValue(1.5));
+    EXPECT_FLOAT_EQ(6, curve->getValue(2));
+    EXPECT_FLOAT_EQ(6, curve->getValue(3));
+}
+
+// Tests that the keyframes may be added out of order.
+TEST(WebFloatAnimationCurveTest, UnsortedKeyframes)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(2, 8),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(0, 2),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(1, 4),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(2, curve->getValue(-1));
+    EXPECT_FLOAT_EQ(2, curve->getValue(0));
+    EXPECT_FLOAT_EQ(3, curve->getValue(0.5));
+    EXPECT_FLOAT_EQ(4, curve->getValue(1));
+    EXPECT_FLOAT_EQ(6, curve->getValue(1.5));
+    EXPECT_FLOAT_EQ(8, curve->getValue(2));
+    EXPECT_FLOAT_EQ(8, curve->getValue(3));
+}
+
+// Tests that a cubic bezier timing function works as expected.
+TEST(WebFloatAnimationCurveTest, CubicBezierTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0), 0.25, 0, 0.75, 1);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(0, curve->getValue(0));
+    EXPECT_LT(0, curve->getValue(0.25));
+    EXPECT_GT(0.25, curve->getValue(0.25));
+    EXPECT_NEAR(curve->getValue(0.5), 0.5, 0.00015);
+    EXPECT_LT(0.75, curve->getValue(0.75));
+    EXPECT_GT(1, curve->getValue(0.75));
+    EXPECT_FLOAT_EQ(1, curve->getValue(1));
+}
+
+// Tests that an ease timing function works as expected.
+TEST(WebFloatAnimationCurveTest, EaseTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0),
+        CompositorAnimationCurve::TimingFunctionTypeEase);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    scoped_ptr<cc::TimingFunction> timingFunction(
+        cc::EaseTimingFunction::Create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->GetValue(time), curve->getValue(time));
+    }
+}
+
+// Tests using a linear timing function.
+TEST(WebFloatAnimationCurveTest, LinearTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(time, curve->getValue(time));
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebFloatAnimationCurveTest, EaseInTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0),
+        CompositorAnimationCurve::TimingFunctionTypeEaseIn);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    scoped_ptr<cc::TimingFunction> timingFunction(
+        cc::EaseInTimingFunction::Create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->GetValue(time), curve->getValue(time));
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebFloatAnimationCurveTest, EaseOutTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0),
+        CompositorAnimationCurve::TimingFunctionTypeEaseOut);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    scoped_ptr<cc::TimingFunction> timingFunction(
+        cc::EaseOutTimingFunction::Create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->GetValue(time), curve->getValue(time));
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebFloatAnimationCurveTest, EaseInOutTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0),
+        CompositorAnimationCurve::TimingFunctionTypeEaseInOut);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    scoped_ptr<cc::TimingFunction> timingFunction(
+        cc::EaseInOutTimingFunction::Create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->GetValue(time), curve->getValue(time));
+    }
+}
+
+// Tests that an ease in timing function works as expected.
+TEST(WebFloatAnimationCurveTest, CustomBezierTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    double x1 = 0.3;
+    double y1 = 0.2;
+    double x2 = 0.8;
+    double y2 = 0.7;
+    curve->add(CompositorFloatKeyframe(0, 0), x1, y1, x2, y2);
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    scoped_ptr<cc::TimingFunction> timingFunction(
+        cc::CubicBezierTimingFunction::Create(x1, y1, x2, y2));
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->GetValue(time), curve->getValue(time));
+    }
+}
+
+// Tests that the default timing function is indeed ease.
+TEST(WebFloatAnimationCurveTest, DefaultTimingFunction)
+{
+    scoped_ptr<CompositorFloatAnimationCurve> curve(new CompositorFloatAnimationCurve);
+    curve->add(CompositorFloatKeyframe(0, 0));
+    curve->add(CompositorFloatKeyframe(1, 1),
+        CompositorAnimationCurve::TimingFunctionTypeLinear);
+
+    scoped_ptr<cc::TimingFunction> timingFunction(
+        cc::EaseTimingFunction::Create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->GetValue(time), curve->getValue(time));
+    }
+}
+
+} // namespace blink