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 
17 package com.android.calllogbackup;
18 
19 import android.util.Log;
20 
21 /**
22  * Helper for Mockito-based test cases.
23  */
24 public final class MockitoHelper {
25     private static final String TAG = "MockitoHelper";
26 
27     private ClassLoader mOriginalClassLoader;
28     private Thread mContextThread;
29 
30     /**
31      * Creates a new helper, which in turn will set the context classloader so
32      * it can load Mockito resources.
33      *
34      * @param packageClass test case class
35      */
setUp(Class<?> packageClass)36     public void setUp(Class<?> packageClass) throws Exception {
37         // makes a copy of the context classloader
38         mContextThread = Thread.currentThread();
39         mOriginalClassLoader = mContextThread.getContextClassLoader();
40         ClassLoader newClassLoader = packageClass.getClassLoader();
41         Log.v(TAG, "Changing context classloader from " + mOriginalClassLoader
42                 + " to " + newClassLoader);
43         mContextThread.setContextClassLoader(newClassLoader);
44     }
45 
46     /**
47      * Restores the context classloader to the previous value.
48      */
tearDown()49     public void tearDown() throws Exception {
50         Log.v(TAG, "Restoring context classloader to " + mOriginalClassLoader);
51         mContextThread.setContextClassLoader(mOriginalClassLoader);
52     }
53 }
54