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.beam.sdk.extensions.sbe;
  
  import static org.junit.Assert.assertArrayEquals;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.InputStream;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutputStream;
  import java.nio.ByteBuffer;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.Arrays;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.io.Resources;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  import uk.co.real_logic.sbe.ir.Ir;
  import uk.co.real_logic.sbe.ir.IrEncoder;
  import uk.co.real_logic.sbe.xml.IrGenerator;
  import uk.co.real_logic.sbe.xml.MessageSchema;
  import uk.co.real_logic.sbe.xml.ParserOptions;
  import uk.co.real_logic.sbe.xml.XmlSchemaParser;
  
  @RunWith(JUnit4.class)
  public final class SerializableIrTest {
    private static final String PERSON_SCHEMA_PATH = Resources.getResource("person.xml").getPath();
  
    @Test
    public void testSerializeAndDeserialize() throws Exception {
      // Arrange
      Ir original = getIr();
      SerializableIr asSerializable = SerializableIr.fromIr(original);
  
      // Act
      byte[] asBytes;
      try (ByteArrayOutputStream byteStream = new ByteArrayOutputStream()) {
        try (ObjectOutputStream objectStream = new ObjectOutputStream(byteStream)) {
          objectStream.writeObject(asSerializable);
          asBytes = byteStream.toByteArray();
        }
      }
  
      SerializableIr afterSerialization;
      try (ByteArrayInputStream byteStream = new ByteArrayInputStream(asBytes)) {
        try (ObjectInputStream objectStream = new ObjectInputStream(byteStream)) {
          afterSerialization = (SerializableIr) objectStream.readObject();
        }
      }
  
      // Assert
      byte[] actual = encodeIr(afterSerialization.ir());
      byte[] expected = encodeIr(original);
      assertArrayEquals(expected, actual);
    }
  
    private static Ir getIr() throws Exception {
      Path schemaPath = Paths.get(PERSON_SCHEMA_PATH);
      try (InputStream in = Files.newInputStream(schemaPath)) {
        MessageSchema schema = XmlSchemaParser.parse(in, ParserOptions.DEFAULT);
        return new IrGenerator().generate(schema);
      }
    }
  
    private static byte[] encodeIr(Ir ir) {
      byte[] arr = new byte[16 * 1024];
      ByteBuffer buffer = ByteBuffer.wrap(arr);
      int actualBytes;
      try (IrEncoder encoder = new IrEncoder(buffer, ir)) {
        actualBytes = encoder.encode();
      }
  
      return Arrays.copyOf(arr, actualBytes);
    }
  }
  