OLD | NEW |
| (Empty) |
1 // Copyright 2014 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 "base/time/time.h" | |
6 #include "testing/gtest/include/gtest/gtest.h" | |
7 #include "ui/gfx/android/scroller.h" | |
8 | |
9 namespace gfx { | |
10 | |
11 namespace { | |
12 | |
13 const float kDefaultStartX = 7.f; | |
14 const float kDefaultStartY = 25.f; | |
15 const float kDefaultDeltaX = -20.f; | |
16 const float kDefaultDeltaY = 73.f; | |
17 const float kDefaultVelocityX = -350.f; | |
18 const float kDefaultVelocityY = 220.f; | |
19 const float kEpsilon = 1e-3f; | |
20 | |
21 Scroller::Config DefaultConfig() { | |
22 return Scroller::Config(); | |
23 } | |
24 | |
25 } // namespace | |
26 | |
27 class ScrollerTest : public testing::Test {}; | |
28 | |
29 TEST_F(ScrollerTest, Scroll) { | |
30 Scroller scroller(DefaultConfig()); | |
31 base::TimeTicks start_time = base::TimeTicks::Now(); | |
32 | |
33 // Start a scroll and verify initialized values. | |
34 scroller.StartScroll(kDefaultStartX, | |
35 kDefaultStartY, | |
36 kDefaultDeltaX, | |
37 kDefaultDeltaY, | |
38 start_time); | |
39 | |
40 EXPECT_EQ(kDefaultStartX, scroller.GetStartX()); | |
41 EXPECT_EQ(kDefaultStartY, scroller.GetStartY()); | |
42 EXPECT_EQ(kDefaultStartX, scroller.GetCurrX()); | |
43 EXPECT_EQ(kDefaultStartY, scroller.GetCurrY()); | |
44 EXPECT_EQ(kDefaultStartX + kDefaultDeltaX, scroller.GetFinalX()); | |
45 EXPECT_EQ(kDefaultStartY + kDefaultDeltaY, scroller.GetFinalY()); | |
46 EXPECT_FALSE(scroller.IsFinished()); | |
47 EXPECT_EQ(base::TimeDelta(), scroller.GetTimePassed()); | |
48 | |
49 // Advance halfway through the scroll. | |
50 const base::TimeDelta scroll_duration = scroller.GetDuration(); | |
51 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
52 | |
53 // Ensure we've moved in the direction of the delta, but have yet to reach | |
54 // the target. | |
55 EXPECT_GT(kDefaultStartX, scroller.GetCurrX()); | |
56 EXPECT_LT(kDefaultStartY, scroller.GetCurrY()); | |
57 EXPECT_LT(scroller.GetFinalX(), scroller.GetCurrX()); | |
58 EXPECT_GT(scroller.GetFinalY(), scroller.GetCurrY()); | |
59 EXPECT_FALSE(scroller.IsFinished()); | |
60 | |
61 // Ensure our velocity is non-zero and in the same direction as the delta. | |
62 EXPECT_GT(0.f, scroller.GetCurrVelocityX() * kDefaultDeltaX); | |
63 EXPECT_GT(0.f, scroller.GetCurrVelocityY() * kDefaultDeltaY); | |
64 EXPECT_TRUE(scroller.IsScrollingInDirection(kDefaultDeltaX, kDefaultDeltaY)); | |
65 | |
66 // Repeated offset computations at the same timestamp should yield identical | |
67 // results. | |
68 float curr_x = scroller.GetCurrX(); | |
69 float curr_y = scroller.GetCurrY(); | |
70 float curr_velocity_x = scroller.GetCurrVelocityX(); | |
71 float curr_velocity_y = scroller.GetCurrVelocityY(); | |
72 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
73 EXPECT_EQ(curr_x, scroller.GetCurrX()); | |
74 EXPECT_EQ(curr_y, scroller.GetCurrY()); | |
75 EXPECT_EQ(curr_velocity_x, scroller.GetCurrVelocityX()); | |
76 EXPECT_EQ(curr_velocity_y, scroller.GetCurrVelocityY()); | |
77 | |
78 // Advance to the end. | |
79 scroller.ComputeScrollOffset(start_time + scroll_duration); | |
80 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
81 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
82 EXPECT_TRUE(scroller.IsFinished()); | |
83 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
84 EXPECT_NEAR(0.f, scroller.GetCurrVelocityX(), kEpsilon); | |
85 EXPECT_NEAR(0.f, scroller.GetCurrVelocityY(), kEpsilon); | |
86 | |
87 // Try to advance further; nothing should change. | |
88 scroller.ComputeScrollOffset(start_time + scroll_duration * 2); | |
89 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
90 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
91 EXPECT_TRUE(scroller.IsFinished()); | |
92 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
93 } | |
94 | |
95 TEST_F(ScrollerTest, Fling) { | |
96 Scroller scroller(DefaultConfig()); | |
97 base::TimeTicks start_time = base::TimeTicks::Now(); | |
98 | |
99 // Start a fling and verify initialized values. | |
100 scroller.Fling(kDefaultStartX, | |
101 kDefaultStartY, | |
102 kDefaultVelocityX, | |
103 kDefaultVelocityY, | |
104 INT_MIN, | |
105 INT_MAX, | |
106 INT_MIN, | |
107 INT_MAX, | |
108 start_time); | |
109 | |
110 EXPECT_EQ(kDefaultStartX, scroller.GetStartX()); | |
111 EXPECT_EQ(kDefaultStartY, scroller.GetStartY()); | |
112 EXPECT_EQ(kDefaultStartX, scroller.GetCurrX()); | |
113 EXPECT_EQ(kDefaultStartY, scroller.GetCurrY()); | |
114 EXPECT_GT(kDefaultStartX, scroller.GetFinalX()); | |
115 EXPECT_LT(kDefaultStartY, scroller.GetFinalY()); | |
116 EXPECT_FALSE(scroller.IsFinished()); | |
117 EXPECT_EQ(base::TimeDelta(), scroller.GetTimePassed()); | |
118 | |
119 // Advance halfway through the fling. | |
120 const base::TimeDelta scroll_duration = scroller.GetDuration(); | |
121 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
122 | |
123 // Ensure we've moved in the direction of the velocity, but have yet to reach | |
124 // the target. | |
125 EXPECT_GT(kDefaultStartX, scroller.GetCurrX()); | |
126 EXPECT_LT(kDefaultStartY, scroller.GetCurrY()); | |
127 EXPECT_LT(scroller.GetFinalX(), scroller.GetCurrX()); | |
128 EXPECT_GT(scroller.GetFinalY(), scroller.GetCurrY()); | |
129 EXPECT_FALSE(scroller.IsFinished()); | |
130 | |
131 // Ensure our velocity is non-zero and in the same direction as the original | |
132 // velocity. | |
133 EXPECT_LT(0.f, scroller.GetCurrVelocityX() * kDefaultVelocityX); | |
134 EXPECT_LT(0.f, scroller.GetCurrVelocityY() * kDefaultVelocityY); | |
135 EXPECT_TRUE( | |
136 scroller.IsScrollingInDirection(kDefaultVelocityX, kDefaultVelocityY)); | |
137 | |
138 // Repeated offset computations at the same timestamp should yield identical | |
139 // results. | |
140 float curr_x = scroller.GetCurrX(); | |
141 float curr_y = scroller.GetCurrY(); | |
142 float curr_velocity_x = scroller.GetCurrVelocityX(); | |
143 float curr_velocity_y = scroller.GetCurrVelocityY(); | |
144 scroller.ComputeScrollOffset(start_time + scroll_duration / 2); | |
145 EXPECT_EQ(curr_x, scroller.GetCurrX()); | |
146 EXPECT_EQ(curr_y, scroller.GetCurrY()); | |
147 EXPECT_EQ(curr_velocity_x, scroller.GetCurrVelocityX()); | |
148 EXPECT_EQ(curr_velocity_y, scroller.GetCurrVelocityY()); | |
149 | |
150 // Advance to the end. | |
151 scroller.ComputeScrollOffset(start_time + scroll_duration); | |
152 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
153 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
154 EXPECT_TRUE(scroller.IsFinished()); | |
155 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
156 EXPECT_NEAR(0.f, scroller.GetCurrVelocityX(), kEpsilon); | |
157 EXPECT_NEAR(0.f, scroller.GetCurrVelocityY(), kEpsilon); | |
158 | |
159 // Try to advance further; nothing should change. | |
160 scroller.ComputeScrollOffset(start_time + scroll_duration * 2); | |
161 EXPECT_EQ(scroller.GetFinalX(), scroller.GetCurrX()); | |
162 EXPECT_EQ(scroller.GetFinalY(), scroller.GetCurrY()); | |
163 EXPECT_TRUE(scroller.IsFinished()); | |
164 EXPECT_EQ(scroll_duration, scroller.GetTimePassed()); | |
165 } | |
166 | |
167 } // namespace gfx | |
OLD | NEW |