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27 #include "platform/animation/UnitBezier.h"
29 #include <gtest/gtest.h>
31 using namespace WebCore;
35 TEST(UnitBezierTest, BasicUse)
37 UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
38 EXPECT_EQ(0.875, bezier.solve(0.5, 0.005));
41 TEST(UnitBezierTest, Overshoot)
43 UnitBezier bezier(0.5, 2.0, 0.5, 2.0);
44 EXPECT_EQ(1.625, bezier.solve(0.5, 0.005));
47 TEST(UnitBezierTest, Undershoot)
49 UnitBezier bezier(0.5, -1.0, 0.5, -1.0);
50 EXPECT_EQ(-0.625, bezier.solve(0.5, 0.005));
53 TEST(UnitBezierTest, InputAtEdgeOfRange)
55 UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
56 EXPECT_EQ(0.0, bezier.solve(0.0, 0.005));
57 EXPECT_EQ(1.0, bezier.solve(1.0, 0.005));
60 TEST(UnitBezierTest, InputOutOfRange)
62 UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
63 EXPECT_EQ(-2.0, bezier.solve(-1.0, 0.005));
64 EXPECT_EQ(1.0, bezier.solve(2.0, 0.005));
67 TEST(UnitBezierTest, InputOutOfRangeLargeEpsilon)
69 UnitBezier bezier(0.5, 1.0, 0.5, 1.0);
70 EXPECT_EQ(-2.0, bezier.solve(-1.0, 1.0));
71 EXPECT_EQ(1.0, bezier.solve(2.0, 1.0));
74 TEST(UnitBezierTest, InputOutOfRangeCoincidentEndpoints)
76 UnitBezier bezier(0.0, 0.0, 1.0, 1.0);
77 EXPECT_EQ(-1.0, bezier.solve(-1.0, 0.005));
78 EXPECT_EQ(2.0, bezier.solve(2.0, 0.005));
81 TEST(UnitBezierTest, InputOutOfRangeVerticalGradient)
83 UnitBezier bezier(0.0, 1.0, 1.0, 0.0);
84 EXPECT_EQ(0.0, bezier.solve(-1.0, 0.005));
85 EXPECT_EQ(1.0, bezier.solve(2.0, 0.005));
88 TEST(UnitBezierTest, InputOutOfRangeDistinctEndpoints)
90 UnitBezier bezier(0.1, 0.2, 0.8, 0.8);
91 EXPECT_EQ(-2.0, bezier.solve(-1.0, 0.005));
92 EXPECT_EQ(2.0, bezier.solve(2.0, 0.005));