ActionBarShadowControllerTest.java revision 9f1e911759dc6fedaac9fa65afb79f6a93022bf4 
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.settings.widget;
18
19
20import android.app.ActionBar;
21import android.app.Activity;
22import android.support.v7.widget.RecyclerView;
23
24import com.android.settings.testutils.SettingsRobolectricTestRunner;
25import com.android.settings.TestConfig;
26import com.android.settingslib.core.lifecycle.Lifecycle;
27import com.android.settingslib.core.lifecycle.LifecycleObserver;
28
29import org.junit.Before;
30import org.junit.Test;
31import org.junit.runner.RunWith;
32import org.mockito.Mock;
33import org.mockito.MockitoAnnotations;
34import org.robolectric.annotation.Config;
35import org.robolectric.util.ReflectionHelpers;
36
37import java.util.List;
38
39import static com.google.common.truth.Truth.assertThat;
40import static org.mockito.Matchers.any;
41import static org.mockito.Mockito.times;
42import static org.mockito.Mockito.verify;
43import static org.mockito.Mockito.when;
44
45@RunWith(SettingsRobolectricTestRunner.class)
46@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
47public class ActionBarShadowControllerTest {
48
49    @Mock
50    private RecyclerView mRecyclerView;
51    @Mock
52    private Activity mActivity;
53    @Mock
54    private ActionBar mActionBar;
55    private Lifecycle mLifecycle;
56
57    @Before
58    public void setUp() {
59        MockitoAnnotations.initMocks(this);
60        when(mActivity.getActionBar()).thenReturn(mActionBar);
61        mLifecycle = new Lifecycle();
62    }
63
64    @Test
65    public void attachToRecyclerView_shouldAddScrollWatcherAndUpdateActionBar() {
66        when(mRecyclerView.canScrollVertically(-1)).thenReturn(false);
67
68        ActionBarShadowController.attachToRecyclerView(mActivity, mLifecycle, mRecyclerView);
69
70        verify(mActionBar).setElevation(0);
71    }
72
73
74    @Test
75    public void attachToRecyclerView_lifecycleChange_shouldAttachDetach() {
76        ActionBarShadowController.attachToRecyclerView(mActivity, mLifecycle, mRecyclerView);
77
78        List<LifecycleObserver> observers = ReflectionHelpers.getField(mLifecycle, "mObservers");
79        assertThat(observers).hasSize(1);
80        verify(mRecyclerView).addOnScrollListener(any());
81
82        mLifecycle.onStop();
83        verify(mRecyclerView).removeOnScrollListener(any());
84
85        mLifecycle.onStart();
86        verify(mRecyclerView, times(2)).addOnScrollListener(any());
87    }
88
89}
90