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.
5 // Tests for the TouchFlingGestureCurve.
7 #include "content/child/touch_fling_gesture_curve.h"
9 #include "base/memory/scoped_ptr.h"
10 #include "testing/gtest/include/gtest/gtest.h"
11 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
12 #include "third_party/WebKit/public/platform/WebFloatSize.h"
13 #include "third_party/WebKit/public/platform/WebGestureCurve.h"
14 #include "third_party/WebKit/public/platform/WebGestureCurveTarget.h"
15 #include "third_party/WebKit/public/platform/WebSize.h"
17 using blink::WebFloatPoint
;
18 using blink::WebFloatSize
;
19 using blink::WebGestureCurve
;
20 using blink::WebGestureCurveTarget
;
25 class MockGestureCurveTarget
: public WebGestureCurveTarget
{
27 virtual bool scrollBy(const WebFloatSize
& delta
,
28 const WebFloatSize
& velocity
) override
{
29 cumulative_delta_
.width
+= delta
.width
;
30 cumulative_delta_
.height
+= delta
.height
;
31 current_velocity_
= velocity
;
35 WebFloatSize
cumulative_delta() const { return cumulative_delta_
; }
36 void resetCumulativeDelta() { cumulative_delta_
= WebFloatSize(); }
38 WebFloatSize
current_velocity() const { return current_velocity_
; }
41 WebFloatSize cumulative_delta_
;
42 WebFloatSize current_velocity_
;
45 } // namespace anonymous
47 TEST(TouchFlingGestureCurve
, flingCurveTouch
)
49 double initialVelocity
= 5000;
50 MockGestureCurveTarget target
;
52 scoped_ptr
<WebGestureCurve
> curve(content::TouchFlingGestureCurve::Create(
53 WebFloatPoint(initialVelocity
, 0), WebSize()));
55 // Note: the expectations below are dependent on the curve parameters hard
56 // coded into the create call above.
57 EXPECT_TRUE(curve
->apply(0, &target
));
58 EXPECT_TRUE(curve
->apply(0.25, &target
));
59 EXPECT_NEAR(target
.current_velocity().width
, 1878, 1);
60 EXPECT_EQ(target
.current_velocity().height
, 0);
61 EXPECT_TRUE(curve
->apply(0.45f
, &target
)); // Use non-uniform tick spacing.
62 EXPECT_TRUE(curve
->apply(1, &target
));
63 EXPECT_FALSE(curve
->apply(1.5, &target
));
64 EXPECT_NEAR(target
.cumulative_delta().width
, 1193, 1);
65 EXPECT_EQ(target
.cumulative_delta().height
, 0);
66 EXPECT_EQ(target
.current_velocity().width
, 0);
67 EXPECT_EQ(target
.current_velocity().height
, 0);