/*
 * 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.spark.io;

import org.junit.jupiter.api.BeforeEach;

import java.io.IOException;
import java.io.InputStream;

/**
 * Tests functionality of {@link ReadAheadInputStreamSuite}
 */
public class ReadAheadInputStreamSuite extends GenericFileInputStreamSuite {

  @BeforeEach
  public void setUp() throws IOException {
    super.setUp();
    inputStreams = new InputStream[] {
      // Tests equal and aligned buffers of wrapped an outer stream.
      new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 8 * 1024), 8 * 1024),
      // Tests aligned buffers, wrapped bigger than outer.
      new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 3 * 1024), 2 * 1024),
      // Tests aligned buffers, wrapped smaller than outer.
      new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 2 * 1024), 3 * 1024),
      // Tests unaligned buffers, wrapped bigger than outer.
      new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 321), 123),
      // Tests unaligned buffers, wrapped smaller than outer.
      new ReadAheadInputStream(new NioBufferedFileInputStream(inputFile, 123), 321)
    };
  }
}
