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
   *
   *     https://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.
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  package org.apache.avro.codegentest;
  
  import org.apache.avro.io.DecoderFactory;
  import org.apache.avro.io.EncoderFactory;
  import org.apache.avro.specific.SpecificDatumReader;
  import org.apache.avro.specific.SpecificDatumWriter;
  import org.apache.avro.specific.SpecificRecordBase;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  abstract class AbstractSpecificRecordTest {
  
    @SuppressWarnings("unchecked")
    <T extends SpecificRecordBase> void verifySerDeAndStandardMethods(T original) {
      final SpecificDatumWriter<T> datumWriterFromSchema = new SpecificDatumWriter<>(original.getSchema());
      final SpecificDatumReader<T> datumReaderFromSchema = new SpecificDatumReader<>(original.getSchema(),
          original.getSchema());
      verifySerDeAndStandardMethods(original, datumWriterFromSchema, datumReaderFromSchema);
      final SpecificDatumWriter<T> datumWriterFromClass = new SpecificDatumWriter(original.getClass());
      final SpecificDatumReader<T> datumReaderFromClass = new SpecificDatumReader(original.getClass());
      verifySerDeAndStandardMethods(original, datumWriterFromClass, datumReaderFromClass);
    }
  
    private <T extends SpecificRecordBase> void verifySerDeAndStandardMethods(T original,
        SpecificDatumWriter<T> datumWriter, SpecificDatumReader<T> datumReader) {
      final byte[] serialized = serialize(original, datumWriter);
      final T copy = deserialize(serialized, datumReader);
      assertEquals(original, copy);
      // In addition to equals() tested above, make sure the other methods that use
      // SpecificData work as intended
      // compareTo() throws an exception for maps, otherwise we would have tested it
      // here
      // Assert.assertEquals(0, original.compareTo(copy));
      assertEquals(original.hashCode(), copy.hashCode());
      assertEquals(original.toString(), copy.toString());
    }
  
    private <T extends SpecificRecordBase> byte[] serialize(T object, SpecificDatumWriter<T> datumWriter) {
      ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
      try {
        datumWriter.write(object, EncoderFactory.get().directBinaryEncoder(outputStream, null));
        return outputStream.toByteArray();
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  
    private <T extends SpecificRecordBase> T deserialize(byte[] bytes, SpecificDatumReader<T> datumReader) {
      try {
        final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
        return datumReader.read(null, DecoderFactory.get().directBinaryDecoder(byteArrayInputStream, null));
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }
  }
  