1/*
2 * Copyright (C) 2015 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 android.support.v7.util;
18
19import static org.hamcrest.CoreMatchers.is;
20import static org.hamcrest.CoreMatchers.nullValue;
21import static org.hamcrest.CoreMatchers.sameInstance;
22import static org.hamcrest.MatcherAssert.assertThat;
23
24import android.support.test.filters.SmallTest;
25import android.support.test.runner.AndroidJUnit4;
26
27import org.junit.Before;
28import org.junit.Test;
29import org.junit.runner.RunWith;
30
31@RunWith(AndroidJUnit4.class)
32@SmallTest
33public class MessageQueueTest {
34    MessageThreadUtil.MessageQueue mQueue;
35
36    @Before
37    public void setUp() throws Exception {
38        mQueue = new MessageThreadUtil.MessageQueue();
39    }
40
41    @Test
42    public void allArguments() {
43        String data = "data";
44        mQueue.sendMessage(MessageThreadUtil.SyncQueueItem.obtainMessage(
45                0, 1, 2, 3, 4, 5, data));
46
47        MessageThreadUtil.SyncQueueItem msg = mQueue.next();
48        assertThat(msg.what, is(0));
49        assertThat(msg.arg1, is(1));
50        assertThat(msg.arg2, is(2));
51        assertThat(msg.arg3, is(3));
52        assertThat(msg.arg4, is(4));
53        assertThat(msg.arg5, is(5));
54        assertThat((String)msg.data, sameInstance(data));
55    }
56
57    @Test
58    public void sendInOrder() {
59        mQueue.sendMessage(obtainMessage(1, 2));
60        mQueue.sendMessage(obtainMessage(3, 4));
61        mQueue.sendMessage(obtainMessage(5, 6));
62
63        MessageThreadUtil.SyncQueueItem msg = mQueue.next();
64        assertThat(msg.what, is(1));
65        assertThat(msg.arg1, is(2));
66
67        msg = mQueue.next();
68        assertThat(msg.what, is(3));
69        assertThat(msg.arg1, is(4));
70
71        msg = mQueue.next();
72        assertThat(msg.what, is(5));
73        assertThat(msg.arg1, is(6));
74
75        msg = mQueue.next();
76        assertThat(msg, nullValue());
77    }
78
79    @Test
80    public void sendAtFront() {
81        mQueue.sendMessage(obtainMessage(1, 2));
82        mQueue.sendMessageAtFrontOfQueue(obtainMessage(3, 4));
83        mQueue.sendMessage(obtainMessage(5, 6));
84
85        MessageThreadUtil.SyncQueueItem msg = mQueue.next();
86        assertThat(msg.what, is(3));
87        assertThat(msg.arg1, is(4));
88
89        msg = mQueue.next();
90        assertThat(msg.what, is(1));
91        assertThat(msg.arg1, is(2));
92
93        msg = mQueue.next();
94        assertThat(msg.what, is(5));
95        assertThat(msg.arg1, is(6));
96
97        msg = mQueue.next();
98        assertThat(msg, nullValue());
99    }
100
101    @Test
102    public void remove() {
103        mQueue.sendMessage(obtainMessage(1, 0));
104        mQueue.sendMessage(obtainMessage(2, 0));
105        mQueue.sendMessage(obtainMessage(1, 0));
106        mQueue.sendMessage(obtainMessage(2, 1));
107        mQueue.sendMessage(obtainMessage(3, 0));
108        mQueue.sendMessage(obtainMessage(1, 0));
109
110        mQueue.removeMessages(1);
111
112        MessageThreadUtil.SyncQueueItem msg = mQueue.next();
113        assertThat(msg.what, is(2));
114        assertThat(msg.arg1, is(0));
115
116        msg = mQueue.next();
117        assertThat(msg.what, is(2));
118        assertThat(msg.arg1, is(1));
119
120        msg = mQueue.next();
121        assertThat(msg.what, is(3));
122        assertThat(msg.arg1, is(0));
123
124        msg = mQueue.next();
125        assertThat(msg, nullValue());
126    }
127
128    private MessageThreadUtil.SyncQueueItem obtainMessage(int what, int arg) {
129        return MessageThreadUtil.SyncQueueItem.obtainMessage(what, arg, null);
130    }
131}
132