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/*
* Copyright (C) 2009, 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 java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.Assert.assertArrayEquals;
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 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 testNul() {
String input = "foo-a\nf\0o-b\n";
byte[] data = Constants.encodeASCII(input);
final RawText a = new RawText(data);
assertArrayEquals(a.content, data);
assertEquals(2, a.size());
assertEquals("foo-a\n", a.getString(0, 1, false));
assertEquals("f\0o-b\n", a.getString(1, 2, false));
assertEquals("foo-a", a.getString(0, 1, true));
assertEquals("f\0o-b", a.getString(1, 2, true));
}
@Test
public void testCrLfTextYes() {
assertTrue(RawText
.isCrLfText(Constants.encodeASCII("line 1\r\nline 2\r\n")));
}
@Test
public void testCrLfTextNo() {
assertFalse(
RawText.isCrLfText(Constants.encodeASCII("line 1\nline 2\n")));
}
@Test
public void testCrLfTextBinary() {
assertFalse(RawText
.isCrLfText(Constants.encodeASCII("line 1\r\nline\0 2\r\n")));
}
@Test
public void testCrLfTextMixed() {
assertTrue(RawText
.isCrLfText(Constants.encodeASCII("line 1\nline 2\r\n")));
}
@Test
public void testCrLfTextCutShort() {
assertFalse(
RawText.isCrLfText(Constants.encodeASCII("line 1\nline 2\r")));
}
@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() {
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() {
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() {
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() {
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');
}
return new RawText(r.toString().getBytes(UTF_8));
}
}
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