1 /*
2  * Copyright (C) 2020 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.systemui.accessibility;
18 
19 import static org.junit.Assert.assertNotEquals;
20 import static org.junit.Assert.assertNotNull;
21 
22 import android.hardware.display.DisplayManager;
23 import android.testing.AndroidTestingRunner;
24 import android.view.Display;
25 
26 import androidx.annotation.NonNull;
27 import androidx.test.filters.SmallTest;
28 
29 import com.android.systemui.SysuiTestCase;
30 
31 import org.junit.Before;
32 import org.junit.Test;
33 import org.junit.runner.RunWith;
34 
35 @SmallTest
36 @RunWith(AndroidTestingRunner.class)
37 public class DisplayIdIndexSupplierTest extends SysuiTestCase {
38 
39     private DisplayIdIndexSupplier<Object> mDisplayIdIndexSupplier;
40 
41     @Before
setUp()42     public void setUp() throws Exception {
43         mDisplayIdIndexSupplier = new DisplayIdIndexSupplier(
44                 mContext.getSystemService(DisplayManager.class)) {
45 
46             @NonNull
47             @Override
48             protected Object createInstance(Display display) {
49                 return new Object();
50             }
51         };
52     }
53 
54     @Test
get_instanceIsNotNull()55     public void get_instanceIsNotNull() {
56         Object object = mDisplayIdIndexSupplier.get(Display.DEFAULT_DISPLAY);
57         assertNotNull(object);
58     }
59 
60     @Test
get_removeExistedObject_newObject()61     public void get_removeExistedObject_newObject() {
62         Object object = mDisplayIdIndexSupplier.get(Display.DEFAULT_DISPLAY);
63         mDisplayIdIndexSupplier.remove(Display.DEFAULT_DISPLAY);
64 
65         Object newObject = mDisplayIdIndexSupplier.get(Display.DEFAULT_DISPLAY);
66 
67         assertNotEquals(object, newObject);
68     }
69 
70     @Test
get_clearAllObjects_newObject()71     public void get_clearAllObjects_newObject() {
72         Object object = mDisplayIdIndexSupplier.get(Display.DEFAULT_DISPLAY);
73         mDisplayIdIndexSupplier.clear();
74 
75         Object newObject = mDisplayIdIndexSupplier.get(Display.DEFAULT_DISPLAY);
76 
77         assertNotEquals(object, newObject);
78     }
79 }
80