/*
    * Copyright (C) 2008-2009, Google Inc.
    * and other copyright owners as documented in the project's IP log.
    *
    * This program and the accompanying materials are made available
    * under the terms of the Eclipse Distribution License v1.0 which
    * accompanies this distribution, is reproduced below, and is
    * available at http://www.eclipse.org/org/documents/edl-v10.php
    *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package org.eclipse.jgit.util;
  
  import static java.nio.charset.StandardCharsets.ISO_8859_1;
  import static org.junit.Assert.assertArrayEquals;
  import static org.junit.Assert.assertNotNull;
  
  import org.eclipse.jgit.errors.BinaryBlobException;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  
  public class RawParseUtils_LineMapTest {
  	@Rule
  	public ExpectedException exception = ExpectedException.none();
  
  
  	@Test
  	public void testEmpty() throws Exception {
  		final IntList map = RawParseUtils.lineMap(new byte[] {}, 0, 0);
  		assertNotNull(map);
  		assertArrayEquals(new int[]{Integer.MIN_VALUE, 0}, asInts(map));
  	}
  
  	@Test
  	public void testOneBlankLine() throws Exception  {
  		final IntList map = RawParseUtils.lineMap(new byte[] { '\n' }, 0, 1);
  		assertArrayEquals(new int[]{Integer.MIN_VALUE, 0, 1}, asInts(map));
  	}
  
  	@Test
  	public void testTwoLineFooBar() {
  		final byte[] buf = "foo\nbar\n".getBytes(ISO_8859_1);
  		final IntList map = RawParseUtils.lineMap(buf, 0, buf.length);
  		assertArrayEquals(new int[]{Integer.MIN_VALUE, 0, 4, buf.length}, asInts(map));
  	}
  
  	@Test
  	public void testTwoLineNoLF() {
  		final byte[] buf = "foo\nbar".getBytes(ISO_8859_1);
  		final IntList map = RawParseUtils.lineMap(buf, 0, buf.length);
  		assertArrayEquals(new int[]{Integer.MIN_VALUE, 0, 4, buf.length}, asInts(map));
  	}
  
  	@Test
  	public void testNulByte() {
  		final byte[] buf = "xxxfoo\nb\0ar".getBytes(ISO_8859_1);
  		final IntList map = RawParseUtils.lineMap(buf, 3, buf.length);
  		assertArrayEquals(new int[] { Integer.MIN_VALUE, 3, 7, buf.length },
  				asInts(map));
  	}
  
  	@Test
  	public void testLineMapOrBinary() throws Exception {
  		final byte[] buf = "xxxfoo\nb\0ar".getBytes(ISO_8859_1);
  		exception.expect(BinaryBlobException.class);
  		RawParseUtils.lineMapOrBinary(buf, 3, buf.length);
 	}
 
 	@Test
 	public void testFourLineBlanks() {
 		final byte[] buf = "foo\n\n\nbar\n".getBytes(ISO_8859_1);
 		final IntList map = RawParseUtils.lineMap(buf, 0, buf.length);
 
 		assertArrayEquals(new int[]{
 				Integer.MIN_VALUE, 0, 4, 5, 6, buf.length
 		}, asInts(map));
 	}
 
 	private int[] asInts(IntList l) {
 		int[] result = new int[l.size()];
 		for (int i = 0; i < l.size(); i++) {
 			result[i] = l.get(i);
 		}
 		return result;
 	}
 }