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.bookkeeper.common.coder;
  
  import static org.hamcrest.CoreMatchers.equalTo;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertThat;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.Unpooled;
  
  /**
   * Basic Test Case for {@link Coder}s.
   */
  public abstract class CoderBasicTestCase {
  
      static <T> byte[] encode(Coder<T> coder, T value) {
          return coder.encode(value);
      }
  
      static <T> T decode(Coder<T> coder, byte[] bytes) {
          ByteBuf buf = Unpooled.wrappedBuffer(bytes);
          buf.setIndex(0, bytes.length);
          return coder.decode(buf);
      }
  
      private static <T> T decodeEncode(Coder<T> coder, T value) {
          byte[] data = encode(coder, value);
          assertEquals(coder.getSerializedSize(value), data.length);
          return decode(coder, data);
      }
  
      public static <T> void coderDecodeEncodeEqual(Coder<T> coder, T value) {
          assertThat(decodeEncode(coder, value), equalTo(value));
      }
  }
  