content: /*
   * 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 org.apache.beam.sdk.extensions.gcp.util.channels;
  
  import static org.junit.Assert.assertEquals;
  
  import java.io.IOException;
  import java.nio.channels.SeekableByteChannel;
  import org.apache.beam.repackaged.core.org.apache.commons.compress.utils.SeekableInMemoryByteChannel;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /**
   * Test {@link SeekableByteChannel} delegation. Reading, writing and consumer interactions are
   * tested along with {@link CountingReadableByteChannel} and {@link CountingWritableByteChannel} in
   * the {@link CountingChannelsReadMethodsTest} and {@link CountingChannelsWriteMethodsTest}
   * respectively.
   */
  @RunWith(JUnit4.class)
  public class CountingSeekableByteChannelTest {
  
    private SeekableByteChannel delegate;
    private CountingSeekableByteChannel channelUnderTest;
  
    @Before
    public void before() {
      delegate = new SeekableInMemoryByteChannel(new byte[16]);
      channelUnderTest = CountingSeekableByteChannel.createWithNoOpConsumer(delegate);
    }
  
    @Test
    public void testPosition() throws IOException {
      int newPosition = 5;
      channelUnderTest.position(newPosition);
      assertEquals(newPosition, delegate.position());
      assertEquals(newPosition, channelUnderTest.position());
    }
  
    @Test
    public void testTruncate() throws IOException {
      int newSize = 5;
      channelUnderTest.truncate(newSize);
      assertEquals(newSize, delegate.size());
      assertEquals(newSize, channelUnderTest.size());
    }
  
    @Test
    public void testSize() throws IOException {
      assertEquals(delegate.size(), channelUnderTest.size());
    }
  }
  