/*
    * Copyright (C) 2009-2010, Google Inc.
    * Copyright (C) 2009, Johannes E. Schindelin <johannes.schindelin@gmx.de> and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
   */
  
  package org.eclipse.jgit.diff;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import org.eclipse.jgit.lib.Constants;
  import org.junit.Test;
  
  public class RawTextIgnoreLeadingWhitespaceTest {
  	private final RawTextComparator cmp = RawTextComparator.WS_IGNORE_LEADING;
  
  	@Test
  	public void testEqualsWithoutWhitespace() {
  		final RawText a = new RawText(Constants
  				.encodeASCII("foo-a\nfoo-b\nfoo\n"));
  		final RawText b = new RawText(Constants
  				.encodeASCII("foo-b\nfoo-c\nf\n"));
  
  		assertEquals(3, a.size());
  		assertEquals(3, b.size());
  
  		// foo-a != foo-b
  		assertFalse(cmp.equals(a, 0, b, 0));
  		assertFalse(cmp.equals(b, 0, a, 0));
  
  		// foo-b == foo-b
  		assertTrue(cmp.equals(a, 1, b, 0));
  		assertTrue(cmp.equals(b, 0, a, 1));
  
  		// foo != f
  		assertFalse(cmp.equals(a, 2, b, 2));
  		assertFalse(cmp.equals(b, 2, a, 2));
  	}
  
  	@Test
  	public void testEqualsWithWhitespace() {
  		final RawText a = new RawText(Constants
  				.encodeASCII("foo-a\n         \n a b c\n      a\nb    \n"));
  		final RawText b = new RawText(Constants
  				.encodeASCII("foo-a        b\n\nab  c\na\nb\n"));
  
  		// "foo-a" != "foo-a        b"
  		assertFalse(cmp.equals(a, 0, b, 0));
  		assertFalse(cmp.equals(b, 0, a, 0));
  
  		// "         " == ""
  		assertTrue(cmp.equals(a, 1, b, 1));
  		assertTrue(cmp.equals(b, 1, a, 1));
  
  		// " a b c" != "ab  c"
  		assertFalse(cmp.equals(a, 2, b, 2));
  		assertFalse(cmp.equals(b, 2, a, 2));
  
  		// "      a" == "a"
  		assertTrue(cmp.equals(a, 3, b, 3));
  		assertTrue(cmp.equals(b, 3, a, 3));
  
  		// "b    " != "b"
  		assertFalse(cmp.equals(a, 4, b, 4));
  		assertFalse(cmp.equals(b, 4, a, 4));
  	}
  }