/*
    * Copyright (C) 2009, Google Inc.
    * Copyright (C) 2009, Johannes E. Schindelin <johannes.schindelin@gmx.de>
    * 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.diff;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertSame;
  import static org.junit.Assert.assertTrue;
  
  import org.junit.Test;
  
  public class EditTest {
  	@Test
  	public void testCreate() {
  		final Edit e = new Edit(1, 2, 3, 4);
  		assertEquals(1, e.getBeginA());
  		assertEquals(2, e.getEndA());
  		assertEquals(3, e.getBeginB());
  		assertEquals(4, e.getEndB());
  	}
  
  	@Test
  	public void testCreateEmpty() {
  		final Edit e = new Edit(1, 3);
  		assertEquals(1, e.getBeginA());
  		assertEquals(1, e.getEndA());
  		assertEquals(3, e.getBeginB());
  		assertEquals(3, e.getEndB());
  		assertTrue("is empty", e.isEmpty());
  		assertSame(Edit.Type.EMPTY, e.getType());
  	}
  
  	@Test
  	public void testSwap() {
  		final Edit e = new Edit(1, 2, 3, 4);
  		e.swap();
  		assertEquals(3, e.getBeginA());
  		assertEquals(4, e.getEndA());
  		assertEquals(1, e.getBeginB());
  		assertEquals(2, e.getEndB());
  	}
  
  	@Test
  	public void testType_Insert() {
  		final Edit e = new Edit(1, 1, 1, 2);
  		assertSame(Edit.Type.INSERT, e.getType());
  		assertFalse("not empty", e.isEmpty());
  		assertEquals(0, e.getLengthA());
  		assertEquals(1, e.getLengthB());
  	}
  
  	@Test
  	public void testType_Delete() {
  		final Edit e = new Edit(1, 2, 1, 1);
  		assertSame(Edit.Type.DELETE, e.getType());
  		assertFalse("not empty", e.isEmpty());
  		assertEquals(1, e.getLengthA());
 		assertEquals(0, e.getLengthB());
 	}
 
 	@Test
 	public void testType_Replace() {
 		final Edit e = new Edit(1, 2, 1, 4);
 		assertSame(Edit.Type.REPLACE, e.getType());
 		assertFalse("not empty", e.isEmpty());
 		assertEquals(1, e.getLengthA());
 		assertEquals(3, e.getLengthB());
 	}
 
 	@Test
 	public void testType_Empty() {
 		final Edit e = new Edit(1, 1, 2, 2);
 		assertSame(Edit.Type.EMPTY, e.getType());
 		assertSame(Edit.Type.EMPTY, new Edit(1, 2).getType());
 		assertTrue("is empty", e.isEmpty());
 		assertEquals(0, e.getLengthA());
 		assertEquals(0, e.getLengthB());
 	}
 
 	@Test
 	public void testToString() {
 		final Edit e = new Edit(1, 2, 1, 4);
 		assertEquals("REPLACE(1-2,1-4)", e.toString());
 	}
 
 	@SuppressWarnings("unlikely-arg-type")
 	@Test
 	public void testEquals1() {
 		final Edit e1 = new Edit(1, 2, 3, 4);
 		final Edit e2 = new Edit(1, 2, 3, 4);
 
 		assertEquals(e1, e1);
 		assertEquals(e2, e1);
 		assertEquals(e1, e2);
 		assertEquals(e1.hashCode(), e2.hashCode());
 		assertFalse(e1.equals(""));
 	}
 
 	@Test
 	public void testNotEquals1() {
 		assertFalse(new Edit(1, 2, 3, 4).equals(new Edit(0, 2, 3, 4)));
 	}
 
 	@Test
 	public void testNotEquals2() {
 		assertFalse(new Edit(1, 2, 3, 4).equals(new Edit(1, 0, 3, 4)));
 	}
 
 	@Test
 	public void testNotEquals3() {
 		assertFalse(new Edit(1, 2, 3, 4).equals(new Edit(1, 2, 0, 4)));
 	}
 
 	@Test
 	public void testNotEquals4() {
 		assertFalse(new Edit(1, 2, 3, 4).equals(new Edit(1, 2, 3, 0)));
 	}
 
 	@Test
 	public void testExtendA() {
 		final Edit e = new Edit(1, 2, 1, 1);
 
 		e.extendA();
 		assertEquals(new Edit(1, 3, 1, 1), e);
 
 		e.extendA();
 		assertEquals(new Edit(1, 4, 1, 1), e);
 	}
 
 	@Test
 	public void testExtendB() {
 		final Edit e = new Edit(1, 2, 1, 1);
 
 		e.extendB();
 		assertEquals(new Edit(1, 2, 1, 2), e);
 
 		e.extendB();
 		assertEquals(new Edit(1, 2, 1, 3), e);
 	}
 
 	@Test
 	public void testBeforeAfterCuts() {
 		final Edit whole = new Edit(1, 8, 2, 9);
 		final Edit mid = new Edit(4, 5, 3, 6);
 
 		assertEquals(new Edit(1, 4, 2, 3), whole.before(mid));
 		assertEquals(new Edit(5, 8, 6, 9), whole.after(mid));
 	}
 }