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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "subprocess.h"
#include "test.h"
#include <string>
#ifndef _WIN32
// SetWithLots need setrlimit.
#include <stdio.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <unistd.h>
#endif
namespace {
#ifdef _WIN32
const char* kSimpleCommand = "cmd /c dir \\";
#else
const char* kSimpleCommand = "ls /";
#endif
struct SubprocessTest : public testing::Test {
SubprocessSet subprocs_;
};
} // anonymous namespace
// Run a command that fails and emits to stderr.
TEST_F(SubprocessTest, BadCommandStderr) {
Subprocess* subproc = subprocs_.Add("cmd /c ninja_no_such_command");
ASSERT_NE((Subprocess *) 0, subproc);
while (!subproc->Done()) {
// Pretend we discovered that stderr was ready for writing.
subprocs_.DoWork();
}
EXPECT_EQ(ExitFailure, subproc->Finish());
EXPECT_NE("", subproc->GetOutput());
}
// Run a command that does not exist
TEST_F(SubprocessTest, NoSuchCommand) {
Subprocess* subproc = subprocs_.Add("ninja_no_such_command");
ASSERT_NE((Subprocess *) 0, subproc);
while (!subproc->Done()) {
// Pretend we discovered that stderr was ready for writing.
subprocs_.DoWork();
}
EXPECT_EQ(ExitFailure, subproc->Finish());
EXPECT_NE("", subproc->GetOutput());
#ifdef _WIN32
ASSERT_EQ("CreateProcess failed: The system cannot find the file "
"specified.\n", subproc->GetOutput());
#endif
}
#ifndef _WIN32
TEST_F(SubprocessTest, InterruptChild) {
Subprocess* subproc = subprocs_.Add("kill -INT $$");
ASSERT_NE((Subprocess *) 0, subproc);
while (!subproc->Done()) {
subprocs_.DoWork();
}
EXPECT_EQ(ExitInterrupted, subproc->Finish());
}
TEST_F(SubprocessTest, InterruptParent) {
Subprocess* subproc = subprocs_.Add("kill -INT $PPID ; sleep 1");
ASSERT_NE((Subprocess *) 0, subproc);
while (!subproc->Done()) {
bool interrupted = subprocs_.DoWork();
if (interrupted)
return;
}
ASSERT_FALSE("We should have been interrupted");
}
// A shell command to check if the current process is connected to a terminal.
// This is different from having stdin/stdout/stderr be a terminal. (For
// instance consider the command "yes < /dev/null > /dev/null 2>&1".
// As "ps" will confirm, "yes" could still be connected to a terminal, despite
// not having any of the standard file descriptors be a terminal.
static const char kIsConnectedToTerminal[] = "tty < /dev/tty > /dev/null";
TEST_F(SubprocessTest, Console) {
// Skip test if we don't have the console ourselves.
if (isatty(0) && isatty(1) && isatty(2)) {
// Test that stdin, stdout and stderr are a terminal.
// Also check that the current process is connected to a terminal.
Subprocess* subproc =
subprocs_.Add(std::string("test -t 0 -a -t 1 -a -t 2 && ") +
std::string(kIsConnectedToTerminal),
/*use_console=*/true);
ASSERT_NE((Subprocess*)0, subproc);
while (!subproc->Done()) {
subprocs_.DoWork();
}
EXPECT_EQ(ExitSuccess, subproc->Finish());
}
}
TEST_F(SubprocessTest, NoConsole) {
Subprocess* subproc =
subprocs_.Add(kIsConnectedToTerminal, /*use_console=*/false);
ASSERT_NE((Subprocess*)0, subproc);
while (!subproc->Done()) {
subprocs_.DoWork();
}
EXPECT_NE(ExitSuccess, subproc->Finish());
}
#endif
TEST_F(SubprocessTest, SetWithSingle) {
Subprocess* subproc = subprocs_.Add(kSimpleCommand);
ASSERT_NE((Subprocess *) 0, subproc);
while (!subproc->Done()) {
subprocs_.DoWork();
}
ASSERT_EQ(ExitSuccess, subproc->Finish());
ASSERT_NE("", subproc->GetOutput());
ASSERT_EQ(1u, subprocs_.finished_.size());
}
TEST_F(SubprocessTest, SetWithMulti) {
Subprocess* processes[3];
const char* kCommands[3] = {
kSimpleCommand,
#ifdef _WIN32
"cmd /c echo hi",
"cmd /c time /t",
#else
"whoami",
"pwd",
#endif
};
for (int i = 0; i < 3; ++i) {
processes[i] = subprocs_.Add(kCommands[i]);
ASSERT_NE((Subprocess *) 0, processes[i]);
}
ASSERT_EQ(3u, subprocs_.running_.size());
for (int i = 0; i < 3; ++i) {
ASSERT_FALSE(processes[i]->Done());
ASSERT_EQ("", processes[i]->GetOutput());
}
while (!processes[0]->Done() || !processes[1]->Done() ||
!processes[2]->Done()) {
ASSERT_GT(subprocs_.running_.size(), 0u);
subprocs_.DoWork();
}
ASSERT_EQ(0u, subprocs_.running_.size());
ASSERT_EQ(3u, subprocs_.finished_.size());
for (int i = 0; i < 3; ++i) {
ASSERT_EQ(ExitSuccess, processes[i]->Finish());
ASSERT_NE("", processes[i]->GetOutput());
delete processes[i];
}
}
// OS X's process limit is less than 1025 by default
// (|sysctl kern.maxprocperuid| is 709 on 10.7 and 10.8 and less prior to that).
#if !defined(__APPLE__) && !defined(_WIN32)
TEST_F(SubprocessTest, SetWithLots) {
// Arbitrary big number; needs to be over 1024 to confirm we're no longer
// hostage to pselect.
const unsigned kNumProcs = 1025;
// Make sure [ulimit -n] isn't going to stop us from working.
rlimit rlim;
ASSERT_EQ(0, getrlimit(RLIMIT_NOFILE, &rlim));
if (rlim.rlim_cur < kNumProcs) {
printf("Raise [ulimit -n] well above %u (currently %lu) to make this test go\n", kNumProcs, rlim.rlim_cur);
return;
}
vector<Subprocess*> procs;
for (size_t i = 0; i < kNumProcs; ++i) {
Subprocess* subproc = subprocs_.Add("/bin/echo");
ASSERT_NE((Subprocess *) 0, subproc);
procs.push_back(subproc);
}
while (!subprocs_.running_.empty())
subprocs_.DoWork();
for (size_t i = 0; i < procs.size(); ++i) {
ASSERT_EQ(ExitSuccess, procs[i]->Finish());
ASSERT_NE("", procs[i]->GetOutput());
}
ASSERT_EQ(kNumProcs, subprocs_.finished_.size());
}
#endif // !__APPLE__ && !_WIN32
// TODO: this test could work on Windows, just not sure how to simply
// read stdin.
#ifndef _WIN32
// Verify that a command that attempts to read stdin correctly thinks
// that stdin is closed.
TEST_F(SubprocessTest, ReadStdin) {
Subprocess* subproc = subprocs_.Add("cat -");
while (!subproc->Done()) {
subprocs_.DoWork();
}
ASSERT_EQ(ExitSuccess, subproc->Finish());
ASSERT_EQ(1u, subprocs_.finished_.size());
}
#endif // _WIN32
|