Add target for webkit_compositor_unittests

webkit/compositor/WebFloatAnimationCurveTest.cpp

Index: webkit/compositor/WebFloatAnimationCurveTest.cpp
diff --git a/webkit/compositor/WebFloatAnimationCurveTest.cpp b/webkit/compositor/WebFloatAnimationCurveTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..b587e09a82afb81444f075834d40b48043f24725
--- /dev/null
+++ b/webkit/compositor/WebFloatAnimationCurveTest.cpp
@@ -0,0 +1,216 @@
+// Copyright 2012 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 "config.h"
+
+#include <public/WebFloatAnimationCurve.h>
+
+#include "CCTimingFunction.h"
+
+#include <gtest/gtest.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+
+using namespace WebKit;
+
+namespace {
+
+// Tests that a float animation with one keyframe works as expected.
+TEST(WebFloatAnimationCurveTest, OneFloatKeyframe)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 2), WebAnimationCurve::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 2), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(1, 4), WebAnimationCurve::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 2), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(1, 4), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(2, 8), WebAnimationCurve::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 4), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(1, 4), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(1, 6), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(2, 6), WebAnimationCurve::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(2, 8), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(0, 2), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(1, 4), WebAnimationCurve::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0), 0.25, 0, 0.75, 1);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    EXPECT_FLOAT_EQ(0, curve->getValue(0));
+    EXPECT_LT(0, curve->getValue(0.25));
+    EXPECT_GT(0.25, curve->getValue(0.25));
+    EXPECT_FLOAT_EQ(0.5, curve->getValue(0.5));
+    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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0), WebAnimationCurve::TimingFunctionTypeEase);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseTimingFunction::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0), WebAnimationCurve::TimingFunctionTypeLinear);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0), WebAnimationCurve::TimingFunctionTypeEaseIn);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseInTimingFunction::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0), WebAnimationCurve::TimingFunctionTypeEaseOut);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseOutTimingFunction::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0), WebAnimationCurve::TimingFunctionTypeEaseInOut);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseInOutTimingFunction::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    double x1 = 0.3;
+    double y1 = 0.2;
+    double x2 = 0.8;
+    double y2 = 0.7;
+    curve->add(WebFloatKeyframe(0, 0), x1, y1, x2, y2);
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCCubicBezierTimingFunction::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)
+{
+    OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(WebFloatAnimationCurve::create());
+    curve->add(WebFloatKeyframe(0, 0));
+    curve->add(WebFloatKeyframe(1, 1), WebAnimationCurve::TimingFunctionTypeLinear);
+
+    OwnPtr<WebCore::CCTimingFunction> timingFunction(WebCore::CCEaseTimingFunction::create());
+    for (int i = 0; i <= 4; ++i) {
+        const double time = i * 0.25;
+        EXPECT_FLOAT_EQ(timingFunction->getValue(time), curve->getValue(time));
+    }
+}
+
+} // namespace