1 /*
2  * Copyright (C) 2013 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 
17 package com.android.inputmethod.latin.utils;
18 
19 import static org.junit.Assert.assertEquals;
20 
21 import android.util.Log;
22 
23 import androidx.test.filters.MediumTest;
24 import androidx.test.runner.AndroidJUnit4;
25 
26 import org.junit.Test;
27 import org.junit.runner.RunWith;
28 
29 @MediumTest
30 @RunWith(AndroidJUnit4.class)
31 public class AsyncResultHolderTests {
32     static final String TAG = AsyncResultHolderTests.class.getSimpleName();
33 
34     private static final int TIMEOUT_IN_MILLISECONDS = 500;
35     private static final int MARGIN_IN_MILLISECONDS = 250;
36     private static final int DEFAULT_VALUE = 2;
37     private static final int SET_VALUE = 1;
38 
setAfterGivenTime(final AsyncResultHolder<T> holder, final T value, final long time)39     private static <T> void setAfterGivenTime(final AsyncResultHolder<T> holder, final T value,
40             final long time) {
41         new Thread(new Runnable() {
42             @Override
43             public void run() {
44                 try {
45                     Thread.sleep(time);
46                 } catch (InterruptedException e) {
47                     Log.d(TAG, "Exception while sleeping", e);
48                 }
49                 holder.set(value);
50             }
51         }).start();
52     }
53 
54     @Test
testGetWithoutSet()55     public void testGetWithoutSet() {
56         final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
57         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
58         assertEquals(DEFAULT_VALUE, resultValue);
59     }
60 
61     @Test
testGetBeforeSet()62     public void testGetBeforeSet() {
63         final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
64         setAfterGivenTime(holder, SET_VALUE, TIMEOUT_IN_MILLISECONDS + MARGIN_IN_MILLISECONDS);
65         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
66         assertEquals(DEFAULT_VALUE, resultValue);
67     }
68 
69     @Test
testGetAfterSet()70     public void testGetAfterSet() {
71         final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
72         holder.set(SET_VALUE);
73         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
74         assertEquals(SET_VALUE, resultValue);
75     }
76 
77     @Test
testGetBeforeTimeout()78     public void testGetBeforeTimeout() {
79         final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
80         setAfterGivenTime(holder, SET_VALUE, TIMEOUT_IN_MILLISECONDS - MARGIN_IN_MILLISECONDS);
81         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
82         assertEquals(SET_VALUE, resultValue);
83     }
84 }
85