SideBandOutputStreamTest.java

/*
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package org.spearce.jgit.transport;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import junit.framework.TestCase;

import org.spearce.jgit.lib.Constants;

// Note, test vectors created with:
//
// perl -e 'printf "%4.4x%s\n", 4+length($ARGV[0]),$ARGV[0]'

public class SideBandOutputStreamTest extends TestCase {
	private ByteArrayOutputStream rawOut;

	private PacketLineOut pckOut;

	protected void setUp() throws Exception {
		super.setUp();
		rawOut = new ByteArrayOutputStream();
		pckOut = new PacketLineOut(rawOut);
	}

	public void testWrite_CH_DATA() throws IOException {
		final SideBandOutputStream out;
		out = new SideBandOutputStream(SideBandOutputStream.CH_DATA, pckOut);
		out.write(new byte[] { 'a', 'b', 'c' });
		assertBuffer("0008\001abc");
	}

	public void testWrite_CH_PROGRESS() throws IOException {
		final SideBandOutputStream out;
		out = new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS, pckOut);
		out.write(new byte[] { 'a', 'b', 'c' });
		assertBuffer("0008\002abc");
	}

	public void testWrite_CH_ERROR() throws IOException {
		final SideBandOutputStream out;
		out = new SideBandOutputStream(SideBandOutputStream.CH_ERROR, pckOut);
		out.write(new byte[] { 'a', 'b', 'c' });
		assertBuffer("0008\003abc");
	}

	public void testWrite_Small() throws IOException {
		final SideBandOutputStream out;
		out = new SideBandOutputStream(SideBandOutputStream.CH_DATA, pckOut);
		out.write('a');
		out.write('b');
		out.write('c');
		assertBuffer("0006\001a0006\001b0006\001c");
	}

	public void testWrite_Large() throws IOException {
		final int buflen = SideBandOutputStream.MAX_BUF
				- SideBandOutputStream.HDR_SIZE;
		final byte[] buf = new byte[buflen];
		for (int i = 0; i < buf.length; i++) {
			buf[i] = (byte) i;
		}

		final SideBandOutputStream out;
		out = new SideBandOutputStream(SideBandOutputStream.CH_DATA, pckOut);
		out.write(buf);

		final byte[] act = rawOut.toByteArray();
		final String explen = Integer.toString(buf.length + 5, 16);
		assertEquals(5 + buf.length, act.length);
		assertEquals(new String(act, 0, 4, "UTF-8"), explen);
		assertEquals(1, act[4]);
		for (int i = 0, j = 5; i < buf.length; i++, j++) {
			assertEquals(buf[i], act[j]);
		}
	}

	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 SideBandOutputStream(SideBandOutputStream.CH_DATA,
				new PacketLineOut(mockout)).flush();
		assertEquals(0, flushCnt[0]);

		new SideBandOutputStream(SideBandOutputStream.CH_ERROR,
				new PacketLineOut(mockout)).flush();
		assertEquals(1, flushCnt[0]);

		new SideBandOutputStream(SideBandOutputStream.CH_PROGRESS,
				new PacketLineOut(mockout)).flush();
		assertEquals(2, flushCnt[0]);
	}

	private void assertBuffer(final String exp) throws IOException {
		assertEquals(exp, new String(rawOut.toByteArray(),
				Constants.CHARACTER_ENCODING));
	}
}