1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* 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.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);
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]);
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();
}
}
|
