1 /*
2  * Copyright 2018 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.bluetooth.avrcp;
18 
19 import android.content.ComponentName;
20 import android.content.Context;
21 import android.os.Bundle;
22 
23 import com.android.internal.annotations.VisibleForTesting;
24 
25 /**
26  * Provide a method to inject custom MediaBrowser objects for testing. By using the factory
27  * methods instead of calling the constructor of MediaBrowser directly, we can inject a custom
28  * MediaBrowser that can be used with JUnit and Mockito to set expectations and validate
29  * behaviour in tests.
30  */
31 public final class MediaBrowserFactory {
32     private static MediaBrowser sInjectedBrowser;
33 
wrap(android.media.browse.MediaBrowser delegate)34     static MediaBrowser wrap(android.media.browse.MediaBrowser delegate) {
35         if (sInjectedBrowser != null) return sInjectedBrowser;
36         return (delegate != null) ? new MediaBrowser(delegate) : null;
37     }
38 
make(Context context, ComponentName serviceComponent, MediaBrowser.ConnectionCallback callback, Bundle rootHints)39     static MediaBrowser make(Context context, ComponentName serviceComponent,
40             MediaBrowser.ConnectionCallback callback, Bundle rootHints) {
41         if (sInjectedBrowser != null) {
42             sInjectedBrowser.testInit(context, serviceComponent, callback, rootHints);
43             return sInjectedBrowser;
44         }
45         return new MediaBrowser(context, serviceComponent, callback, rootHints);
46     }
47 
48     @VisibleForTesting
inject(MediaBrowser browser)49     static void inject(MediaBrowser browser) {
50         sInjectedBrowser = browser;
51     }
52 }
53