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/*
* Copyright (C) 2010, Marc Strapetz <marc.strapetz@syntevo.com>
* Copyright (C) 2015, 2020 Ivan Motsch <ivan.motsch@bsiag.com> 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.util.io;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.function.Function;
import org.eclipse.jgit.util.io.AutoLFInputStream.StreamFlag;
import org.junit.Test;
public class AutoLFInputStreamTest {
@Test
public void testLF() throws IOException {
final byte[] bytes = asBytes("1\n2\n3");
test(bytes, bytes);
}
@Test
public void testCR() throws IOException {
final byte[] bytes = asBytes("1\r2\r3");
test(bytes, bytes);
}
@Test
public void testCRLF() throws IOException {
test(asBytes("1\r\n2\r\n3"), asBytes("1\n2\n3"));
}
@Test
public void testLFCR() throws IOException {
final byte[] bytes = asBytes("1\n\r2\n\r3");
test(bytes, bytes);
}
@Test
public void testEmpty() throws IOException {
final byte[] bytes = asBytes("");
test(bytes, bytes);
}
@Test
public void testBinaryDetect() throws IOException {
final byte[] bytes = asBytes("1\r\n2\r\n3\0");
test(bytes, bytes, StreamFlag.DETECT_BINARY);
}
@Test
public void testBinaryDontDetect() throws IOException {
test(asBytes("1\r\n2\r\n3\0"), asBytes("1\n2\n3\0"));
}
@Test
public void testCrLf() throws IOException {
byte[] bytes = asBytes("1\r\n2\n3\r\n\r");
test(bytes, bytes, in -> AutoLFInputStream.create(in,
StreamFlag.DETECT_BINARY, StreamFlag.FOR_CHECKOUT));
}
@Test
public void testCrLfDontDetect() throws IOException {
test(asBytes("1\r\n2\r\n"), asBytes("1\n2\n"),
in -> AutoLFInputStream.create(in, StreamFlag.DETECT_BINARY));
}
private static void test(byte[] input, byte[] expected, StreamFlag... flags)
throws IOException {
test(input, expected, in -> AutoLFInputStream.create(in, flags));
}
private static void test(byte[] input, byte[] expected,
Function<InputStream, InputStream> factory) throws IOException {
try (InputStream bis1 = new ByteArrayInputStream(input);
InputStream cis1 = factory.apply(bis1)) {
int index1 = 0;
for (int b = cis1.read(); b != -1; b = cis1.read()) {
assertEquals(expected[index1], (byte) b);
index1++;
}
assertEquals(expected.length, index1);
for (int bufferSize = 1; bufferSize < 10; bufferSize++) {
final byte[] buffer = new byte[bufferSize];
try (InputStream bis2 = new ByteArrayInputStream(input);
InputStream cis2 = factory.apply(bis2)) {
int read = 0;
for (int readNow = cis2.read(buffer, 0,
buffer.length); readNow != -1
&& read < expected.length; readNow = cis2
.read(buffer, 0, buffer.length)) {
for (int index2 = 0; index2 < readNow; index2++) {
assertEquals(expected[read + index2],
buffer[index2]);
}
read += readNow;
}
assertEquals(expected.length, read);
}
}
}
}
private static byte[] asBytes(String in) {
return in.getBytes(UTF_8);
}
}
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