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/*
* Copyright (C) 2009-2010, Google Inc. 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.transport;
import static java.lang.Integer.valueOf;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.eclipse.jgit.transport.SideBandOutputStream.CH_DATA;
import static org.eclipse.jgit.transport.SideBandOutputStream.CH_ERROR;
import static org.eclipse.jgit.transport.SideBandOutputStream.CH_PROGRESS;
import static org.eclipse.jgit.transport.SideBandOutputStream.HDR_SIZE;
import static org.eclipse.jgit.transport.SideBandOutputStream.MAX_BUF;
import static org.eclipse.jgit.transport.SideBandOutputStream.SMALL_BUF;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.text.MessageFormat;
import org.eclipse.jgit.internal.JGitText;
import org.junit.Before;
import org.junit.Test;
// Note, test vectors created with:
//
// perl -e 'printf "%4.4x%s\n", 4+length($ARGV[0]),$ARGV[0]'
public class SideBandOutputStreamTest {
private ByteArrayOutputStream rawOut;
@Before
public void setUp() throws Exception {
rawOut = new ByteArrayOutputStream();
}
@Test
public void testWrite_CH_DATA() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA,
SMALL_BUF, rawOut)) {
out.write(new byte[] { 'a', 'b', 'c' });
out.flush();
}
assertBuffer("0008\001abc");
}
@Test
public void testWrite_CH_PROGRESS() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_PROGRESS,
SMALL_BUF, rawOut)) {
out.write(new byte[] { 'a', 'b', 'c' });
out.flush();
}
assertBuffer("0008\002abc");
}
@Test
public void testWrite_CH_ERROR() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_ERROR,
SMALL_BUF, rawOut)) {
out.write(new byte[] { 'a', 'b', 'c' });
out.flush();
}
assertBuffer("0008\003abc");
}
@Test
public void testWrite_Small() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA,
SMALL_BUF, rawOut)) {
out.write('a');
out.write('b');
out.write('c');
out.flush();
}
assertBuffer("0008\001abc");
}
@Test
public void testWrite_SmallBlocks1() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA, 6,
rawOut)) {
out.write('a');
out.write('b');
out.write('c');
out.flush();
}
assertBuffer("0006\001a0006\001b0006\001c");
}
@Test
public void testWrite_SmallBlocks2() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA, 6,
rawOut)) {
out.write(new byte[] { 'a', 'b', 'c' });
out.flush();
}
assertBuffer("0006\001a0006\001b0006\001c");
}
@Test
public void testWrite_SmallBlocks3() throws IOException {
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA, 7,
rawOut)) {
out.write('a');
out.write(new byte[] { 'b', 'c' });
out.flush();
}
assertBuffer("0007\001ab0006\001c");
}
@Test
public void testWrite_Large() throws IOException {
final int buflen = MAX_BUF - HDR_SIZE;
final byte[] buf = new byte[buflen];
for (int i = 0; i < buf.length; i++) {
buf[i] = (byte) i;
}
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA,
MAX_BUF, rawOut)) {
out.write(buf);
out.flush();
}
final byte[] act = rawOut.toByteArray();
final String explen = Integer.toString(buf.length + HDR_SIZE, 16);
assertEquals(HDR_SIZE + buf.length, act.length);
assertEquals(new String(act, 0, 4, "UTF-8"), explen);
assertEquals(1, act[4]);
for (int i = 0, j = HDR_SIZE; i < buf.length; i++, j++) {
assertEquals(buf[i], act[j]);
}
}
@Test
public void testFlush() throws IOException {
final int[] flushCnt = new int[1];
final OutputStream mockout = new OutputStream() {
@Override
public void write(int arg0) throws IOException {
fail("should not write");
}
@Override
public void flush() throws IOException {
flushCnt[0]++;
}
};
try (SideBandOutputStream out = new SideBandOutputStream(CH_DATA,
SMALL_BUF, mockout)) {
out.flush();
}
assertEquals(1, flushCnt[0]);
}
private void createSideBandOutputStream(int chan, int sz, OutputStream os)
throws Exception {
try (SideBandOutputStream s = new SideBandOutputStream(chan, sz, os)) {
// Unused
}
}
@Test
public void testConstructor_RejectsBadChannel() throws Exception {
try {
createSideBandOutputStream(-1, MAX_BUF, rawOut);
fail("Accepted -1 channel number");
} catch (IllegalArgumentException e) {
assertEquals("channel -1 must be in range [1, 255]", e.getMessage());
}
try {
createSideBandOutputStream(0, MAX_BUF, rawOut);
fail("Accepted 0 channel number");
} catch (IllegalArgumentException e) {
assertEquals("channel 0 must be in range [1, 255]", e.getMessage());
}
try {
createSideBandOutputStream(256, MAX_BUF, rawOut);
fail("Accepted 256 channel number");
} catch (IllegalArgumentException e) {
assertEquals("channel 256 must be in range [1, 255]", e
.getMessage());
}
}
@Test
public void testConstructor_RejectsBadBufferSize() throws Exception {
try {
createSideBandOutputStream(CH_DATA, -1, rawOut);
fail("Accepted -1 for buffer size");
} catch (IllegalArgumentException e) {
assertEquals("packet size -1 must be >= 5", e.getMessage());
}
try {
createSideBandOutputStream(CH_DATA, 0, rawOut);
fail("Accepted 0 for buffer size");
} catch (IllegalArgumentException e) {
assertEquals("packet size 0 must be >= 5", e.getMessage());
}
try {
createSideBandOutputStream(CH_DATA, 1, rawOut);
fail("Accepted 1 for buffer size");
} catch (IllegalArgumentException e) {
assertEquals("packet size 1 must be >= 5", e.getMessage());
}
try {
createSideBandOutputStream(CH_DATA, Integer.MAX_VALUE, rawOut);
fail("Accepted " + Integer.MAX_VALUE + " for buffer size");
} catch (IllegalArgumentException e) {
assertEquals(MessageFormat.format(
JGitText.get().packetSizeMustBeAtMost,
valueOf(Integer.MAX_VALUE), valueOf(65520)), e.getMessage());
}
}
private void assertBuffer(String exp) {
assertEquals(exp, new String(rawOut.toByteArray(), UTF_8));
}
}
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