1 /*
2  * Copyright 2023 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.media.mediatestutils;
18 
19 import org.junit.rules.TestRule;
20 import org.junit.runner.Description;
21 import org.junit.runners.model.Statement;
22 
23 import java.util.ArrayList;
24 import java.util.List;
25 import java.util.concurrent.Future;
26 
27 /**
28  *
29  */
30 public class CancelAllFuturesRule implements TestRule {
31     private List<Future> mRegisteredFutures = new ArrayList<>();
32 
registerFuture(T future)33     public <T extends Future<?>> T registerFuture(T future) {
34         mRegisteredFutures.add(future);
35         return future;
36     }
37 
38     @Override
apply(Statement base, Description description)39     public Statement apply(Statement base, Description description) {
40         return new Statement() {
41             @Override
42             public void evaluate() throws Throwable {
43                 try {
44                     base.evaluate();
45                 } finally {
46                     mRegisteredFutures.forEach(f -> f.cancel(false /* shouldInterrupt */));
47                 }
48             }
49         };
50     }
51 }
52