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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.nio.charset.StandardCharsets.UTF_8;
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 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 PacketLineOutTest {
private ByteArrayOutputStream rawOut;
private PacketLineOut out;
@Before
public void setUp() throws Exception {
rawOut = new ByteArrayOutputStream();
out = new PacketLineOut(rawOut);
}
// writeString
@Test
public void testWriteString1() throws IOException {
out.writeString("a");
out.writeString("bc");
assertBuffer("0005a0006bc");
}
@Test
public void testWriteString2() throws IOException {
out.writeString("a\n");
out.writeString("bc\n");
assertBuffer("0006a\n0007bc\n");
}
@Test
public void testWriteString3() throws IOException {
out.writeString("");
assertBuffer("0004");
}
// end
@Test
public void testWriteEnd() throws IOException {
final int[] flushCnt = new int[1];
final OutputStream mockout = new OutputStream() {
@Override
public void write(int arg0) throws IOException {
rawOut.write(arg0);
}
@Override
public void flush() throws IOException {
flushCnt[0]++;
}
};
new PacketLineOut(mockout).end();
assertBuffer("0000");
assertEquals(1, flushCnt[0]);
}
@Test
public void testWriteDelim() throws IOException {
out.writeDelim();
assertBuffer("0001");
}
// writePacket
@Test
public void testWritePacket1() throws IOException {
out.writePacket(new byte[] { 'a' });
assertBuffer("0005a");
}
@Test
public void testWritePacket2() throws IOException {
out.writePacket(new byte[] { 'a', 'b', 'c', 'd' });
assertBuffer("0008abcd");
}
@Test
public void testWritePacket3() throws IOException {
final int buflen = SideBandOutputStream.MAX_BUF - 5;
final byte[] buf = new byte[buflen];
for (int i = 0; i < buf.length; i++) {
buf[i] = (byte) i;
}
out.writePacket(buf);
out.flush();
final byte[] act = rawOut.toByteArray();
final String explen = Integer.toString(buf.length + 4, 16);
assertEquals(4 + buf.length, act.length);
assertEquals(new String(act, 0, 4, "UTF-8"), explen);
for (int i = 0, j = 4; i < buf.length; i++, j++) {
assertEquals(buf[i], act[j]);
}
}
// flush
@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]++;
}
};
new PacketLineOut(mockout).flush();
assertEquals(1, flushCnt[0]);
}
private void assertBuffer(String exp) {
assertEquals(exp, new String(rawOut.toByteArray(),
UTF_8));
}
}
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