1 /*
2  * Copyright (C) 2021 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.compatibility.common.util;
18 
19 import org.junit.Assert;
20 
21 import java.io.File;
22 
23 /**
24  * Static methods used to validate preconditions in the media CTS suite to simplify failure
25  * diagnosis.
26  */
27 public final class Preconditions {
28     private static final String TAG = "Preconditions";
29 
30     /**
31      * While accessing resource file, if it is not present, media codec api sometimes sends
32      * obfuscated message indicating the same. Have the test run this check before accessing
33      * resource.
34      */
assertTestFileExists(String pathName)35     public static void assertTestFileExists(String pathName) {
36         File testFile = new File(pathName);
37         Assert.assertTrue("Test Setup Error, missing file: " + pathName, testFile.exists());
38     }
39 
Preconditions()40     private Preconditions() {}
41 }
42