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- /*
- * Copyright (C) 2009-2010, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.util.io;
-
- import static org.junit.Assert.assertArrayEquals;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertTrue;
- import static org.junit.Assert.fail;
-
- import java.io.IOException;
- import java.io.InterruptedIOException;
- import java.io.PipedInputStream;
- import java.io.PipedOutputStream;
- import java.util.Arrays;
- import java.util.List;
-
- import org.eclipse.jgit.util.IO;
- import org.junit.After;
- import org.junit.Before;
- import org.junit.Test;
-
- public class TimeoutInputStreamTest {
- private static final int timeout = 250;
-
- private PipedOutputStream out;
-
- private PipedInputStream in;
-
- private InterruptTimer timer;
-
- private TimeoutInputStream is;
-
- private long start;
-
- @Before
- public void setUp() throws Exception {
- out = new PipedOutputStream();
- in = new PipedInputStream(out);
- timer = new InterruptTimer();
- is = new TimeoutInputStream(in, timer);
- is.setTimeout(timeout);
- }
-
- @After
- public void tearDown() throws Exception {
- timer.terminate();
- for (Thread t : active())
- assertFalse(t instanceof InterruptTimer.AlarmThread);
- }
-
- @Test
- public void testTimeout_readByte_Success1() throws IOException {
- out.write('a');
- assertEquals('a', is.read());
- }
-
- @Test
- public void testTimeout_readByte_Success2() throws IOException {
- final byte[] exp = new byte[] { 'a', 'b', 'c' };
- out.write(exp);
- assertEquals(exp[0], is.read());
- assertEquals(exp[1], is.read());
- assertEquals(exp[2], is.read());
- out.close();
- assertEquals(-1, is.read());
- }
-
- @Test
- public void testTimeout_readByte_Timeout() throws IOException {
- beginRead();
- try {
- is.read();
- fail("incorrectly read a byte");
- } catch (InterruptedIOException e) {
- // expected
- }
- assertTimeout();
- }
-
- @Test
- public void testTimeout_readBuffer_Success1() throws IOException {
- final byte[] exp = new byte[] { 'a', 'b', 'c' };
- final byte[] act = new byte[exp.length];
- out.write(exp);
- IO.readFully(is, act, 0, act.length);
- assertArrayEquals(exp, act);
- }
-
- @Test
- public void testTimeout_readBuffer_Success2() throws IOException {
- final byte[] exp = new byte[] { 'a', 'b', 'c' };
- final byte[] act = new byte[exp.length];
- out.write(exp);
- IO.readFully(is, act, 0, 1);
- IO.readFully(is, act, 1, 1);
- IO.readFully(is, act, 2, 1);
- assertArrayEquals(exp, act);
- }
-
- @Test
- public void testTimeout_readBuffer_Timeout() throws IOException {
- beginRead();
- try {
- IO.readFully(is, new byte[512], 0, 512);
- fail("incorrectly read bytes");
- } catch (InterruptedIOException e) {
- // expected
- }
- assertTimeout();
- }
-
- @Test
- public void testTimeout_skip_Success() throws IOException {
- final byte[] exp = new byte[] { 'a', 'b', 'c' };
- out.write(exp);
- assertEquals(2, is.skip(2));
- assertEquals('c', is.read());
- }
-
- @Test
- public void testTimeout_skip_Timeout() throws IOException {
- beginRead();
- try {
- is.skip(1024);
- fail("incorrectly skipped bytes");
- } catch (InterruptedIOException e) {
- // expected
- }
- assertTimeout();
- }
-
- private void beginRead() {
- start = now();
- }
-
- private void assertTimeout() {
- // Our timeout was supposed to be ~250 ms. Since this is a timing
- // test we can't assume we spent *exactly* the timeout period, as
- // there may be other activity going on in the system. Instead we
- // look for the delta between the start and end times to be within
- // 50 ms of the expected timeout.
- //
- final long wait = now() - start;
- assertTrue("waited only " + wait + " ms", timeout - wait < 50);
- }
-
- private static List<Thread> active() {
- Thread[] all = new Thread[16];
- int n = Thread.currentThread().getThreadGroup().enumerate(all);
- while (n == all.length) {
- all = new Thread[all.length * 2];
- n = Thread.currentThread().getThreadGroup().enumerate(all);
- }
- return Arrays.asList(all).subList(0, n);
- }
-
- private static long now() {
- return System.currentTimeMillis();
- }
- }
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