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      1 /*
      2  * Copyright (C) 2017 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 java.io.IOException;
     20 import java.nio.ByteBuffer;
     21 import org.junit.runner.RunWith;
     22 import org.junit.runners.JUnit4;
     23 
     24 /**
     25  * Tests for the {@link DataSink} returned by {@link DataSinks#newInMemoryDataSink()}.
     26  */
     27 @RunWith(JUnit4.class)
     28 public class InMemoryDataSinkTest extends DataSinkTestBase<ReadableDataSink> {
     29 
     30     @Override
     31     protected CloseableWithDataSink<ReadableDataSink> createDataSink() {
     32         return CloseableWithDataSink.of(DataSinks.newInMemoryDataSink());
     33     }
     34 
     35     @Override
     36     protected ByteBuffer getContents(ReadableDataSink dataSink) throws IOException {
     37         if (dataSink.size() > Integer.MAX_VALUE) {
     38             throw new IOException("Too much data: " + dataSink.size());
     39         }
     40         return dataSink.getByteBuffer(0, (int) dataSink.size());
     41     }
     42 
     43 }
     44