GenericJsonCoderTest.java

/*
 * Copyright (C) 2014 Google Inc.
 *
 * Licensed 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.google.cloud.genomics.dataflow.coders;

import static org.junit.Assert.assertTrue;

import com.google.api.services.genomics.model.Read;
import com.google.cloud.dataflow.sdk.coders.Coder.Context;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

@RunWith(JUnit4.class)
public class GenericJsonCoderTest {

  /**
   * Tests what happens when trying to read two concatenated JSON objects using GenericJsonCoder
   */
  @Test
  public void testCodingInIterable() throws IOException {
    Read read = new Read();
    read.setId("TEST_READ_1");

    GenericJsonCoder<Read> coder = GenericJsonCoder.of(Read.class);
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    coder.encode(read, output, Context.NESTED);
    read.setId("TEST_READ_2");
    coder.encode(read, output, Context.NESTED);

    InputStream input = new ByteArrayInputStream(output.toByteArray());
    Read out = coder.decode(input, Context.NESTED);
    assertTrue(out.getId().equals("TEST_READ_1"));
    out = coder.decode(input, Context.NESTED);
    assertTrue(out.getId().equals("TEST_READ_2"));
  }
}