cc/animation/scroll_offset_animation_curve_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/animation/scroll_offset_animation_curve.h"
   6
   7 #include "cc/animation/timing_function.h"
   8 #include "cc/test/geometry_test_utils.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10
  11 namespace cc {
  12 namespace {
  13
  14 TEST(ScrollOffsetAnimationCurveTest, Duration) {
  15   gfx::Vector2dF target_value(100.f, 200.f);
  16   scoped_ptr<ScrollOffsetAnimationCurve> curve(
  17       ScrollOffsetAnimationCurve::Create(
  18           target_value,
  19           EaseInOutTimingFunction::Create().Pass()));
  20
  21   curve->SetInitialValue(target_value);
  22   EXPECT_DOUBLE_EQ(0.0, curve->Duration());
  23
  24   // x decreases, y stays the same.
  25   curve->SetInitialValue(gfx::Vector2dF(136.f, 200.f));
  26   EXPECT_DOUBLE_EQ(0.1, curve->Duration());
  27
  28   // x increases, y stays the same.
  29   curve->SetInitialValue(gfx::Vector2dF(19.f, 200.f));
  30   EXPECT_DOUBLE_EQ(0.15, curve->Duration());
  31
  32   // x stays the same, y decreases.
  33   curve->SetInitialValue(gfx::Vector2dF(100.f, 344.f));
  34   EXPECT_DOUBLE_EQ(0.2, curve->Duration());
  35
  36   // x stays the same, y increases.
  37   curve->SetInitialValue(gfx::Vector2dF(100.f, 191.f));
  38   EXPECT_DOUBLE_EQ(0.05, curve->Duration());
  39
  40   // x decreases, y decreases.
  41   curve->SetInitialValue(gfx::Vector2dF(32500.f, 500.f));
  42   EXPECT_DOUBLE_EQ(3.0, curve->Duration());
  43
  44   // x decreases, y increases.
  45   curve->SetInitialValue(gfx::Vector2dF(150.f, 119.f));
  46   EXPECT_DOUBLE_EQ(0.15, curve->Duration());
  47
  48   // x increases, y decreases.
  49   curve->SetInitialValue(gfx::Vector2dF(0.f, 14600.f));
  50   EXPECT_DOUBLE_EQ(2.0, curve->Duration());
  51
  52   // x increases, y increases.
  53   curve->SetInitialValue(gfx::Vector2dF(95.f, 191.f));
  54   EXPECT_DOUBLE_EQ(0.05, curve->Duration());
  55 }
  56
  57 TEST(ScrollOffsetAnimationCurveTest, GetValue) {
  58   gfx::Vector2dF initial_value(2.f, 40.f);
  59   gfx::Vector2dF target_value(10.f, 20.f);
  60   scoped_ptr<ScrollOffsetAnimationCurve> curve(
  61       ScrollOffsetAnimationCurve::Create(
  62           target_value,
  63           EaseInOutTimingFunction::Create().Pass()));
  64   curve->SetInitialValue(initial_value);
  65
  66   double duration = curve->Duration();
  67   EXPECT_GT(curve->Duration(), 0);
  68   EXPECT_LT(curve->Duration(), 0.1);
  69
  70   EXPECT_EQ(AnimationCurve::ScrollOffset, curve->Type());
  71   EXPECT_EQ(duration, curve->Duration());
  72
  73   EXPECT_VECTOR2DF_EQ(initial_value, curve->GetValue(-1.0));
  74   EXPECT_VECTOR2DF_EQ(initial_value, curve->GetValue(0.0));
  75   EXPECT_VECTOR2DF_EQ(gfx::Vector2dF(6.f, 30.f), curve->GetValue(duration/2.0));
  76   EXPECT_VECTOR2DF_EQ(target_value, curve->GetValue(duration));
  77   EXPECT_VECTOR2DF_EQ(target_value, curve->GetValue(duration+1.0));
  78
  79   // Verify that GetValue takes the timing function into account.
  80   gfx::Vector2dF value = curve->GetValue(duration/4.0);
  81   EXPECT_NEAR(3.0333f, value.x(), 0.00015f);
  82   EXPECT_NEAR(37.4168f, value.y(), 0.00015f);
  83 }
  84
  85 // Verify that a clone behaves exactly like the original.
  86 TEST(ScrollOffsetAnimationCurveTest, Clone) {
  87   gfx::Vector2dF initial_value(2.f, 40.f);
  88   gfx::Vector2dF target_value(10.f, 20.f);
  89   scoped_ptr<ScrollOffsetAnimationCurve> curve(
  90       ScrollOffsetAnimationCurve::Create(
  91           target_value,
  92           EaseInOutTimingFunction::Create().Pass()));
  93   curve->SetInitialValue(initial_value);
  94   double duration = curve->Duration();
  95
  96   scoped_ptr<AnimationCurve> clone(curve->Clone().Pass());
  97
  98   EXPECT_EQ(AnimationCurve::ScrollOffset, clone->Type());
  99   EXPECT_EQ(duration, clone->Duration());
 100
 101   EXPECT_VECTOR2DF_EQ(initial_value,
 102                       clone->ToScrollOffsetAnimationCurve()->GetValue(-1.0));
 103   EXPECT_VECTOR2DF_EQ(initial_value,
 104                       clone->ToScrollOffsetAnimationCurve()->GetValue(0.0));
 105   EXPECT_VECTOR2DF_EQ(
 106       gfx::Vector2dF(6.f, 30.f),
 107       clone->ToScrollOffsetAnimationCurve()->GetValue(duration / 2.0));
 108   EXPECT_VECTOR2DF_EQ(
 109       target_value,
 110       clone->ToScrollOffsetAnimationCurve()->GetValue(duration));
 111   EXPECT_VECTOR2DF_EQ(
 112       target_value,
 113       clone->ToScrollOffsetAnimationCurve()->GetValue(duration + 1.0));
 114
 115   // Verify that the timing function was cloned correctly.
 116   gfx::Vector2dF value =
 117       clone->ToScrollOffsetAnimationCurve()->GetValue(duration / 4.0);
 118   EXPECT_NEAR(3.0333f, value.x(), 0.00015f);
 119   EXPECT_NEAR(37.4168f, value.y(), 0.00015f);
 120 }
 121
 122 }  // namespace
 123 }  // namespace cc