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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Random;
import junit.framework.TestCase;
/**
* Tests for {@link ByteBufferWriter}.
*/
public class ByteBufferWriterTest extends TestCase {
public void testHeapBuffer() throws IOException {
// Test a small and large buffer.
testWrite(ByteBuffer.allocate(100));
testWrite(ByteBuffer.allocate(1024 * 100));
}
public void testDirectBuffer() throws IOException {
// Test a small and large buffer.
testWrite(ByteBuffer.allocateDirect(100));
testWrite(ByteBuffer.allocateDirect(1024 * 100));
}
private void testWrite(ByteBuffer buffer) throws IOException {
fillRandom(buffer);
ByteArrayOutputStream os = new ByteArrayOutputStream(buffer.remaining());
ByteBufferWriter.write(buffer, os);
assertEquals(0, buffer.position());
assertTrue(Arrays.equals(toArray(buffer), os.toByteArray()));
}
private void fillRandom(ByteBuffer buf) {
byte[] bytes = new byte[buf.remaining()];
new Random().nextBytes(bytes);
buf.put(bytes);
buf.flip();
return;
}
private byte[] toArray(ByteBuffer buf) {
int originalPosition = buf.position();
byte[] bytes = new byte[buf.remaining()];
buf.get(bytes);
buf.position(originalPosition);
return bytes;
}
}
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