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 com.datastax.oss.driver.internal.core.type.codec;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  import com.datastax.oss.driver.api.core.ProtocolVersion;
  import com.datastax.oss.driver.api.core.type.codec.TypeCodec;
  import com.datastax.oss.protocol.internal.util.Bytes;
  import java.nio.ByteBuffer;
  
  public class CodecTestBase<T> {
    protected TypeCodec<T> codec;
  
    protected String encode(T t, ProtocolVersion protocolVersion) {
      assertThat(codec).as("Must set codec before calling this method").isNotNull();
      ByteBuffer bytes = codec.encode(t, protocolVersion);
      return (bytes == null) ? null : Bytes.toHexString(bytes);
    }
  
    protected String encode(T t) {
      return encode(t, ProtocolVersion.DEFAULT);
    }
  
    protected T decode(String hexString, ProtocolVersion protocolVersion) {
      assertThat(codec).as("Must set codec before calling this method").isNotNull();
      ByteBuffer bytes = (hexString == null) ? null : Bytes.fromHexString(hexString);
      // Decode twice, to assert that decode leaves the input buffer in its original state
      codec.decode(bytes, protocolVersion);
      return codec.decode(bytes, protocolVersion);
    }
  
    protected T decode(String hexString) {
      return decode(hexString, ProtocolVersion.DEFAULT);
    }
  
    protected String format(T t) {
      assertThat(codec).as("Must set codec before calling this method").isNotNull();
      return codec.format(t);
    }
  
    protected T parse(String s) {
      assertThat(codec).as("Must set codec before calling this method").isNotNull();
      return codec.parse(s);
    }
  }
  