1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.setupwizardlib.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import android.content.Context;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
import android.view.View;
import com.android.setupwizardlib.view.BottomScrollView;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
@RunWith(AndroidJUnit4.class)
@SmallTest
public class BottomScrollViewTest {
private TestBottomScrollListener mListener;
@Before
public void setUp() throws Exception {
mListener = new TestBottomScrollListener();
}
@Test
public void testNoNeedScroll() {
createScrollView(20);
assertTrue("Scroll should not be required", mListener.mScrolledToBottom);
}
@Test
public void testNeedScroll() {
createScrollView(110);
assertFalse("Scroll should be required", mListener.mScrolledToBottom);
}
@Test
public void testScrollToBottom() {
final BottomScrollView bottomScrollView = createScrollView(110);
assertFalse("Scroll should be required", mListener.mScrolledToBottom);
bottomScrollView.scrollTo(0, 10);
assertTrue("Should already be scrolled to bottom", mListener.mScrolledToBottom);
}
@Test
public void testScrollThreshold() {
final BottomScrollView bottomScrollView = createScrollView(110);
assertEquals("Scroll threshold should be 10", 10, bottomScrollView.getScrollThreshold());
}
private BottomScrollView createScrollView(final int childHeight) {
final Context context = InstrumentationRegistry.getContext();
final BottomScrollView bottomScrollView = new TestBottomScrollView(context);
bottomScrollView.setBottomScrollListener(mListener);
final View child = new TestChildView(context, childHeight);
child.measure(0, 0); // TestChildView's measured dimensions doesn't depend on the arguments
bottomScrollView.addView(child);
bottomScrollView.layout(0, 0, 100, 100);
return bottomScrollView;
}
private static class TestChildView extends View {
private static final int WIDTH = 10;
private int mHeight;
TestChildView(Context context, int height) {
super(context);
mHeight = height;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
setMeasuredDimension(WIDTH, mHeight);
}
public void setHeight(int height) {
mHeight = height;
}
}
private static class TestBottomScrollView extends BottomScrollView {
TestBottomScrollView(Context context) {
super(context);
}
@Override
public boolean post(Runnable action) {
// Post all runnables synchronously so that tests can check the callbacks.
action.run();
return true;
}
}
private static class TestBottomScrollListener implements BottomScrollView.BottomScrollListener {
boolean mScrolledToBottom = true;
@Override
public void onScrolledToBottom() {
mScrolledToBottom = true;
}
@Override
public void onRequiresScroll() {
mScrolledToBottom = false;
}
}
}
|
