1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.setupwizardlib.template;
18
19import static org.mockito.Matchers.anyInt;
20import static org.mockito.Matchers.eq;
21import static org.mockito.Mockito.doNothing;
22import static org.mockito.Mockito.doReturn;
23import static org.mockito.Mockito.spy;
24import static org.mockito.Mockito.verify;
25import static org.robolectric.RuntimeEnvironment.application;
26
27import android.support.v7.widget.RecyclerView;
28import android.support.v7.widget.RecyclerView.OnScrollListener;
29
30import com.android.setupwizardlib.BuildConfig;
31import com.android.setupwizardlib.robolectric.SuwLibRobolectricTestRunner;
32
33import org.junit.Before;
34import org.junit.Test;
35import org.junit.runner.RunWith;
36import org.mockito.ArgumentCaptor;
37import org.mockito.Mock;
38import org.mockito.MockitoAnnotations;
39import org.robolectric.annotation.Config;
40
41@Config(constants = BuildConfig.class, sdk = { Config.OLDEST_SDK, Config.NEWEST_SDK })
42@RunWith(SuwLibRobolectricTestRunner.class)
43public class RecyclerViewScrollHandlingDelegateTest {
44
45    @Mock
46    private RequireScrollMixin mRequireScrollMixin;
47
48    private RecyclerView mRecyclerView;
49    private RecyclerViewScrollHandlingDelegate mDelegate;
50    private ArgumentCaptor<OnScrollListener> mListenerCaptor;
51
52    @Before
53    public void setUp() throws Exception {
54        MockitoAnnotations.initMocks(this);
55
56        mRecyclerView = spy(new RecyclerView(application));
57        doReturn(20).when(mRecyclerView).computeVerticalScrollRange();
58        doReturn(0).when(mRecyclerView).computeVerticalScrollExtent();
59        doReturn(0).when(mRecyclerView).computeVerticalScrollOffset();
60        mListenerCaptor = ArgumentCaptor.forClass(OnScrollListener.class);
61        doNothing().when(mRecyclerView).addOnScrollListener(mListenerCaptor.capture());
62
63        mDelegate = new RecyclerViewScrollHandlingDelegate(mRequireScrollMixin, mRecyclerView);
64        mRecyclerView.layout(0, 0, 50, 50);
65    }
66
67    @Test
68    public void testRequireScroll() {
69        mDelegate.startListening();
70        verify(mRequireScrollMixin).notifyScrollabilityChange(true);
71    }
72
73    @Test
74    public void testScrolledToBottom() {
75        mDelegate.startListening();
76        verify(mRequireScrollMixin).notifyScrollabilityChange(true);
77
78        doReturn(20).when(mRecyclerView).computeVerticalScrollOffset();
79        mListenerCaptor.getValue().onScrolled(mRecyclerView, 0, 20);
80
81        verify(mRequireScrollMixin).notifyScrollabilityChange(false);
82    }
83
84    @Test
85    public void testClickScrollButton() {
86        mDelegate.pageScrollDown();
87        verify(mRecyclerView).smoothScrollBy(anyInt(), eq(50));
88    }
89}
90