jgit/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/RawTextIgnoreTrailingWhitespaceTest.java

/*
 * Copyright (C) 2009-2010, 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.
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 * 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
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 * - Neither the name of the Eclipse Foundation, Inc. nor the
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package org.eclipse.jgit.diff;

import org.eclipse.jgit.lib.Constants;

import junit.framework.TestCase;

public class RawTextIgnoreTrailingWhitespaceTest extends TestCase {
	public void testEqualsWithoutWhitespace() {
		final RawText a = new RawTextIgnoreTrailingWhitespace(Constants
				.encodeASCII("foo-a\nfoo-b\nfoo\n"));
		final RawText b = new RawTextIgnoreTrailingWhitespace(Constants
				.encodeASCII("foo-b\nfoo-c\nf\n"));

		assertEquals(3, a.size());
		assertEquals(3, b.size());

		// foo-a != foo-b
		assertFalse(a.equals(0, b, 0));
		assertFalse(b.equals(0, a, 0));

		// foo-b == foo-b
		assertTrue(a.equals(1, b, 0));
		assertTrue(b.equals(0, a, 1));

		// foo != f
		assertFalse(a.equals(2, b, 2));
		assertFalse(b.equals(2, a, 2));
	}

	public void testEqualsWithWhitespace() {
		final RawText a = new RawTextIgnoreTrailingWhitespace(Constants
				.encodeASCII("foo-a\n         \n a b c\na      \n    b\n"));
		final RawText b = new RawTextIgnoreTrailingWhitespace(Constants
				.encodeASCII("foo-a        b\n\nab  c\na\nb\n"));

		// "foo-a" != "foo-a        b"
		assertFalse(a.equals(0, b, 0));
		assertFalse(b.equals(0, a, 0));

		// "         " == ""
		assertTrue(a.equals(1, b, 1));
		assertTrue(b.equals(1, a, 1));

		// " a b c" != "ab  c"
		assertFalse(a.equals(2, b, 2));
		assertFalse(b.equals(2, a, 2));

		// "a      " == "a"
		assertTrue(a.equals(3, b, 3));
		assertTrue(b.equals(3, a, 3));

		// "    b" != "b"
		assertFalse(a.equals(4, b, 4));
		assertFalse(b.equals(4, a, 4));
	}
}