BytesUtilTest.java

/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.pinterest.terrapin.base;

import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;

import org.junit.Test;

import java.nio.ByteBuffer;

public class BytesUtilTest {

  @Test
  public void testReadBytesFromByteBufferWithoutConsume() {
    byte[] expectedBytes = "hello world".getBytes();
    ByteBuffer bb = ByteBuffer.wrap(expectedBytes);
    byte[] returnedBytes = BytesUtil.readBytesFromByteBufferWithoutConsume(bb);
    assertArrayEquals(expectedBytes, returnedBytes);
    assertEquals(0, bb.position());
  }

  @Test
  public void testReadBytesFromByteBuffer() {
    byte[] expectedBytes = "hello world".getBytes();
    ByteBuffer bb = ByteBuffer.wrap(expectedBytes);
    byte[] returnedBytes = BytesUtil.readBytesFromByteBuffer(bb);
    assertArrayEquals(expectedBytes, returnedBytes);
    assertEquals(expectedBytes.length, bb.position());
  }
}