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      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
     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
     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