/*
    * 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.giraph.utils.io;
  
  import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;
  import org.apache.hadoop.conf.Configuration;
  import org.junit.Assert;
  import org.junit.Test;
  
  import java.io.IOException;
  
  public class TestBigDataIO {
    @Test
    public void testLargeByteArrays() throws IOException {
      ImmutableClassesGiraphConfiguration conf =
          new ImmutableClassesGiraphConfiguration(new Configuration());
      BigDataOutput output = new BigDataOutput(conf);
      byte[] byteArray1 = new byte[(1 << 28) + 3];
      int pos1 = (1 << 27) + 2;
      byteArray1[pos1] = 17;
      output.write(byteArray1);
      Assert.assertEquals(9, output.getNumberOfDataOutputs());
      byte[] byteArray2 = new byte[(1 << 27) - 1];
      int pos2 = (1 << 26) + 5;
      byteArray2[pos2] = 13;
      output.write(byteArray2);
      Assert.assertEquals(13, output.getNumberOfDataOutputs());
  
      BigDataInput in = new BigDataInput(output);
      byte[] byteArray3 = new byte[byteArray1.length];
      in.readFully(byteArray3);
      Assert.assertEquals(byteArray1[pos1], byteArray3[pos1]);
      byte[] byteArray4 = new byte[byteArray2.length];
      in.readFully(byteArray4);
      Assert.assertEquals(byteArray2[pos2], byteArray4[pos2]);
    }
  }