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.
   */
  
  package org.apache.avro.hadoop.io;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  
  import org.apache.avro.Schema;
  import org.apache.avro.io.DatumWriter;
  import org.apache.avro.io.Encoder;
  import org.apache.avro.io.EncoderFactory;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.apache.avro.mapred.AvroWrapper;
  import org.junit.jupiter.api.Test;
  
  public class TestAvroKeyDeserializer {
    @Test
    void deserialize() throws IOException {
      // Create a deserializer.
      Schema writerSchema = Schema.create(Schema.Type.STRING);
      Schema readerSchema = Schema.create(Schema.Type.STRING);
      ClassLoader classLoader = this.getClass().getClassLoader();
      AvroKeyDeserializer<CharSequence> deserializer = new AvroKeyDeserializer<>(writerSchema, readerSchema, classLoader);
  
      // Check the schemas.
      assertEquals(writerSchema, deserializer.getWriterSchema());
      assertEquals(readerSchema, deserializer.getReaderSchema());
  
      // Write some records to deserialize.
      DatumWriter<CharSequence> datumWriter = new GenericDatumWriter<>(writerSchema);
      ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
      Encoder encoder = EncoderFactory.get().binaryEncoder(outputStream, null);
      datumWriter.write("record1", encoder);
      datumWriter.write("record2", encoder);
      encoder.flush();
  
      // Deserialize the records.
      ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
      deserializer.open(inputStream);
      AvroWrapper<CharSequence> record = null;
  
      record = deserializer.deserialize(record);
      assertEquals("record1", record.datum().toString());
  
      record = deserializer.deserialize(record);
      assertEquals("record2", record.datum().toString());
  
      deserializer.close();
    }
  }
  