/*
* 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.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.util.RawParseUtils;
import org.junit.Test;
public class RawTextTest {
@Test
public void testEmpty() {
final RawText r = new RawText(new byte[0]);
assertEquals(0, r.size());
}
@Test
public void testEquals() {
final RawText a = new RawText(Constants.encodeASCII("foo-a\nfoo-b\n"));
final RawText b = new RawText(Constants.encodeASCII("foo-b\nfoo-c\n"));
RawTextComparator cmp = RawTextComparator.DEFAULT;
assertEquals(2, a.size());
assertEquals(2, 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));
}
@Test
public void testWriteLine1() throws IOException {
final RawText a = new RawText(Constants.encodeASCII("foo-a\nfoo-b\n"));
final ByteArrayOutputStream o = new ByteArrayOutputStream();
a.writeLine(o, 0);
final byte[] r = o.toByteArray();
assertEquals("foo-a", RawParseUtils.decode(r));
}
@Test
public void testWriteLine2() throws IOException {
final RawText a = new RawText(Constants.encodeASCII("foo-a\nfoo-b"));
final ByteArrayOutputStream o = new ByteArrayOutputStream();
a.writeLine(o, 1);
final byte[] r = o.toByteArray();
assertEquals("foo-b", RawParseUtils.decode(r));
}
@Test
public void testWriteLine3() throws IOException {
final RawText a = new RawText(Constants.encodeASCII("a\n\nb\n"));
final ByteArrayOutputStream o = new ByteArrayOutputStream();
a.writeLine(o, 1);
final byte[] r = o.toByteArray();
assertEquals("", RawParseUtils.decode(r));
}
@Test
public void testComparatorReduceCommonStartEnd()
throws UnsupportedEncodingException {
final RawTextComparator c = RawTextComparator.DEFAULT;
Edit e;
e = c.reduceCommonStartEnd(t(""), t(""), new Edit(0, 0, 0, 0));
assertEquals(new Edit(0, 0, 0, 0), e);
e = c.reduceCommonStartEnd(t("a"), t("b"), new Edit(0, 1, 0, 1));
assertEquals(new Edit(0, 1, 0, 1), e);
e = c.reduceCommonStartEnd(t("a"), t("a"), new Edit(0, 1, 0, 1));
assertEquals(new Edit(1, 1, 1, 1), e);
e = c.reduceCommonStartEnd(t("axB"), t("axC"), new Edit(0, 3, 0, 3));
assertEquals(new Edit(2, 3, 2, 3), e);
e = c.reduceCommonStartEnd(t("Bxy"), t("Cxy"), new Edit(0, 3, 0, 3));
assertEquals(new Edit(0, 1, 0, 1), e);
e = c.reduceCommonStartEnd(t("bc"), t("Abc"), new Edit(0, 2, 0, 3));
assertEquals(new Edit(0, 0, 0, 1), e);
e = new Edit(0, 5, 0, 5);
e = c.reduceCommonStartEnd(t("abQxy"), t("abRxy"), e);
assertEquals(new Edit(2, 3, 2, 3), e);
RawText a = new RawText("p\na b\nQ\nc d\n".getBytes("UTF-8"));
RawText b = new RawText("p\na b \nR\n c d \n".getBytes("UTF-8"));
e = new Edit(0, 4, 0, 4);
e = RawTextComparator.WS_IGNORE_ALL.reduceCommonStartEnd(a, b, e);
assertEquals(new Edit(2, 3, 2, 3), e);
}
@Test
public void testComparatorReduceCommonStartEnd_EmptyLine()
throws UnsupportedEncodingException {
RawText a;
RawText b;
Edit e;
a = new RawText("R\n y\n".getBytes("UTF-8"));
b = new RawText("S\n\n y\n".getBytes("UTF-8"));
e = new Edit(0, 2, 0, 3);
e = RawTextComparator.DEFAULT.reduceCommonStartEnd(a, b, e);
assertEquals(new Edit(0, 1, 0, 2), e);
a = new RawText("S\n\n y\n".getBytes("UTF-8"));
b = new RawText("R\n y\n".getBytes("UTF-8"));
e = new Edit(0, 3, 0, 2);
e = RawTextComparator.DEFAULT.reduceCommonStartEnd(a, b, e);
assertEquals(new Edit(0, 2, 0, 1), e);
}
@Test
public void testComparatorReduceCommonStartButLastLineNoEol()
throws UnsupportedEncodingException {
RawText a;
RawText b;
Edit e;
a = new RawText("start".getBytes("UTF-8"));
b = new RawText("start of line".getBytes("UTF-8"));
e = new Edit(0, 1, 0, 1);
e = RawTextComparator.DEFAULT.reduceCommonStartEnd(a, b, e);
assertEquals(new Edit(0, 1, 0, 1), e);
}
@Test
public void testComparatorReduceCommonStartButLastLineNoEol_2()
throws UnsupportedEncodingException {
RawText a;
RawText b;
Edit e;
a = new RawText("start".getBytes("UTF-8"));
b = new RawText("start of\nlastline".getBytes("UTF-8"));
e = new Edit(0, 1, 0, 2);
e = RawTextComparator.DEFAULT.reduceCommonStartEnd(a, b, e);
assertEquals(new Edit(0, 1, 0, 2), e);
}
@Test
public void testLineDelimiter() throws Exception {
RawText rt = new RawText(Constants.encodeASCII("foo\n"));
assertEquals("\n", rt.getLineDelimiter());
assertFalse(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("foo\r\n"));
assertEquals("\r\n", rt.getLineDelimiter());
assertFalse(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("foo\nbar"));
assertEquals("\n", rt.getLineDelimiter());
assertTrue(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("foo\r\nbar"));
assertEquals("\r\n", rt.getLineDelimiter());
assertTrue(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("foo\nbar\r\n"));
assertEquals("\n", rt.getLineDelimiter());
assertFalse(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("foo\r\nbar\n"));
assertEquals("\r\n", rt.getLineDelimiter());
assertFalse(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("foo"));
assertNull(rt.getLineDelimiter());
assertTrue(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII(""));
assertNull(rt.getLineDelimiter());
assertTrue(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("\n"));
assertEquals("\n", rt.getLineDelimiter());
assertFalse(rt.isMissingNewlineAtEnd());
rt = new RawText(Constants.encodeASCII("\r\n"));
assertEquals("\r\n", rt.getLineDelimiter());
assertFalse(rt.isMissingNewlineAtEnd());
}
@Test
public void testLineDelimiter2() throws Exception {
RawText rt = new RawText(Constants.encodeASCII("\nfoo"));
assertEquals("\n", rt.getLineDelimiter());
assertTrue(rt.isMissingNewlineAtEnd());
}
private static RawText t(String text) {
StringBuilder r = new StringBuilder();
for (int i = 0; i < text.length(); i++) {
r.append(text.charAt(i));
r.append('\n');
}
try {
return new RawText(r.toString().getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
}