1 /*
2  * Copyright (C) 2016 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.apksig.util;
18 
19 import com.android.apksig.internal.util.RandomAccessFileDataSink;
20 import java.io.File;
21 import java.io.IOException;
22 import java.io.RandomAccessFile;
23 import java.nio.ByteBuffer;
24 import org.junit.runner.RunWith;
25 import org.junit.runners.JUnit4;
26 
27 /**
28  * Tests for the {@link DataSink} returned by
29  * {@link DataSinks#asDataSink(java.io.RandomAccessFile)}.
30  */
31 @RunWith(JUnit4.class)
32 public class DataSinkFromRAFTest extends DataSinkTestBase<RandomAccessFileDataSink> {
33 
34     @Override
createDataSink()35     protected CloseableWithDataSink<RandomAccessFileDataSink> createDataSink() throws IOException {
36         File tmp = File.createTempFile(DataSourceFromRAFTest.class.getSimpleName(), ".bin");
37         RandomAccessFile f = null;
38         try {
39             f = new RandomAccessFile(tmp, "rw");
40         } finally {
41             if (f == null) {
42                 tmp.delete();
43             }
44         }
45         return CloseableWithDataSink.of(
46                 (RandomAccessFileDataSink) DataSinks.asDataSink(f),
47                 new DataSourceFromRAFTest.TmpFileCloseable(tmp, f));
48     }
49 
50     @Override
getContents(RandomAccessFileDataSink dataSink)51     protected ByteBuffer getContents(RandomAccessFileDataSink dataSink) throws IOException {
52         RandomAccessFile f = dataSink.getFile();
53         if (f.length() > Integer.MAX_VALUE) {
54             throw new IOException("File too large: " + f.length());
55         }
56         byte[] contents = new byte[(int) f.length()];
57         f.seek(0);
58         f.readFully(contents);
59         return ByteBuffer.wrap(contents);
60     }
61 }
62