spark/io/ReadAheadInputStreamSuite.java

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *    http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017 package org.apache.spark.io;
0018
0019 import org.junit.Before;
0020
0021 import java.io.IOException;
0022 import java.io.InputStream;
0023
0024 /**
0025  * Tests functionality of {@link ReadAheadInputStreamSuite}
0026  */
0027 public class ReadAheadInputStreamSuite extends GenericFileInputStreamSuite {
0028
0029   @Before
0030   public void setUp() throws IOException {
0031     super.setUp();
0032     inputStreams = new InputStream[] {
0033       // Tests equal and aligned buffers of wrapped an outer stream.
0034       new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 8 * 1024), 8 * 1024),
0035       // Tests aligned buffers, wrapped bigger than outer.
0036       new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 3 * 1024), 2 * 1024),
0037       // Tests aligned buffers, wrapped smaller than outer.
0038       new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 2 * 1024), 3 * 1024),
0039       // Tests unaligned buffers, wrapped bigger than outer.
0040       new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 321), 123),
0041       // Tests unaligned buffers, wrapped smaller than outer.
0042       new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 123), 321)
0043     };
0044   }
0045 }