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.grpc;
  
  import org.apache.avro.Protocol;
  import org.apache.avro.grpc.test.Kind;
  import org.apache.avro.grpc.test.MD5;
  import org.apache.avro.grpc.test.TestRecord;
  import org.apache.avro.grpc.test.TestService;
  import org.junit.jupiter.api.Test;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.util.Arrays;
  import java.util.Random;
  
  import io.grpc.Drainable;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class TestAvroMarshaller {
    private final TestRecord record = TestRecord.newBuilder().setName("foo").setKind(Kind.FOO)
        .setArrayOfLongs(Arrays.asList(42L, 424L, 4242L)).setHash(new MD5(new byte[] { 4, 2, 4, 2 }))
        .setNullableHash(null).build();
    private final Protocol.Message message = TestService.PROTOCOL.getMessages().get("echo");
    private Random random = new Random();
  
    private void readPratialAndDrain(int partialToRead, InputStream inputStream, OutputStream target) throws IOException {
      // read specified partial bytes from request InputStream to target and then
      // drain the rest.
      for (int i = 0; i < partialToRead; i++) {
        int readByte = inputStream.read();
        if (readByte >= 0) {
          target.write(readByte);
        } else {
          break;
        }
      }
      Drainable drainableRequest = (Drainable) inputStream;
      drainableRequest.drainTo(target);
    }
  
    @Test
    void avroRequestReadPartialAndDrain() throws IOException {
      AvroRequestMarshaller requestMarshaller = new AvroRequestMarshaller(message);
      InputStream requestInputStream = requestMarshaller.stream(new Object[] { record });
      ByteArrayOutputStream requestOutputStream = new ByteArrayOutputStream();
      readPratialAndDrain(random.nextInt(7) + 1, requestInputStream, requestOutputStream);
      InputStream serialized = new ByteArrayInputStream(requestOutputStream.toByteArray());
      Object[] parsedArgs = requestMarshaller.parse(serialized);
      assertEquals(1, parsedArgs.length);
      assertEquals(record, parsedArgs[0]);
    }
  
    @Test
    void avroResponseReadPartialAndDrain() throws IOException {
      AvroResponseMarshaller responseMarshaller = new AvroResponseMarshaller(message);
      InputStream responseInputStream = responseMarshaller.stream(record);
      ByteArrayOutputStream responseOutputStream = new ByteArrayOutputStream();
      readPratialAndDrain(random.nextInt(7) + 1, responseInputStream, responseOutputStream);
      InputStream serialized = new ByteArrayInputStream(responseOutputStream.toByteArray());
      Object parsedResponse = responseMarshaller.parse(serialized);
      assertEquals(record, parsedResponse);
    }
  }
  