summaryrefslogtreecommitdiffstats
path: root/src/subprocess_test.cc
blob: 7dbaf9762d5f4c38f86f2dfce6156f8236ce03dd (plain)
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
// 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"

#ifndef _WIN32
// SetWithLots need setrlimit.
#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;
  }

  ADD_FAILURE() << "We should have been interrupted";
}

#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];
  }
}

#ifndef _WIN32
TEST_F(SubprocessTest, SetWithLots) {
  // Arbitrary big number; needs to be over 1024 to confirm we're no longer
  // hostage to pselect.
  const size_t kNumProcs = 1025;

  // Make sure [ulimit -n] isn't going to stop us from working.
  rlimit rlim;
  ASSERT_EQ(0, getrlimit(RLIMIT_NOFILE, &rlim));
  ASSERT_GT(rlim.rlim_cur, kNumProcs)
      << "Raise [ulimit -n] well above " << kNumProcs
      << " to make this test go";

  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  // _WIN32