aboutsummaryrefslogtreecommitdiffstats
path: root/unittests/Support/ProgramTest.cpp
blob: c0e6e80e358b6f37d75c8aead36cdf3683a8aa15 (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
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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
//===- unittest/Support/ProgramTest.cpp -----------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Program.h"
#include "gtest/gtest.h"
#include <stdlib.h>
#if defined(__APPLE__)
# include <crt_externs.h>
#elif !defined(_MSC_VER)
// Forward declare environ in case it's not provided by stdlib.h.
extern char **environ;
#endif

#if defined(LLVM_ON_UNIX)
#include <unistd.h>
void sleep_for(unsigned int seconds) {
  sleep(seconds);
}
#elif defined(LLVM_ON_WIN32)
#include <windows.h>
void sleep_for(unsigned int seconds) {
  Sleep(seconds * 1000);
}
#else
#error sleep_for is not implemented on your platform.
#endif

#define ASSERT_NO_ERROR(x)                                                     \
  if (std::error_code ASSERT_NO_ERROR_ec = x) {                                \
    SmallString<128> MessageStorage;                                           \
    raw_svector_ostream Message(MessageStorage);                               \
    Message << #x ": did not return errc::success.\n"                          \
            << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n"          \
            << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n";      \
    GTEST_FATAL_FAILURE_(MessageStorage.c_str());                              \
  } else {                                                                     \
  }
// From TestMain.cpp.
extern const char *TestMainArgv0;

namespace {

using namespace llvm;
using namespace sys;

static cl::opt<std::string>
ProgramTestStringArg1("program-test-string-arg1");
static cl::opt<std::string>
ProgramTestStringArg2("program-test-string-arg2");

static void CopyEnvironment(std::vector<const char *> &out) {
#ifdef __APPLE__
  char **envp = *_NSGetEnviron();
#else
  // environ seems to work for Windows and most other Unices.
  char **envp = environ;
#endif
  while (*envp != nullptr) {
    out.push_back(*envp);
    ++envp;
  }
}

TEST(ProgramTest, CreateProcessTrailingSlash) {
  if (getenv("LLVM_PROGRAM_TEST_CHILD")) {
    if (ProgramTestStringArg1 == "has\\\\ trailing\\" &&
        ProgramTestStringArg2 == "has\\\\ trailing\\") {
      exit(0);  // Success!  The arguments were passed and parsed.
    }
    exit(1);
  }

  std::string my_exe =
      sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
  const char *argv[] = {
    my_exe.c_str(),
    "--gtest_filter=ProgramTest.CreateProcessTrailingSlash",
    "-program-test-string-arg1", "has\\\\ trailing\\",
    "-program-test-string-arg2", "has\\\\ trailing\\",
    nullptr
  };

  // Add LLVM_PROGRAM_TEST_CHILD to the environment of the child.
  std::vector<const char *> envp;
  CopyEnvironment(envp);
  envp.push_back("LLVM_PROGRAM_TEST_CHILD=1");
  envp.push_back(nullptr);

  std::string error;
  bool ExecutionFailed;
  // Redirect stdout and stdin to NUL, but let stderr through.
#ifdef LLVM_ON_WIN32
  StringRef nul("NUL");
#else
  StringRef nul("/dev/null");
#endif
  const StringRef *redirects[] = { &nul, &nul, nullptr };
  int rc = ExecuteAndWait(my_exe, argv, &envp[0], redirects,
                          /*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &error,
                          &ExecutionFailed);
  EXPECT_FALSE(ExecutionFailed) << error;
  EXPECT_EQ(0, rc);
}

TEST(ProgramTest, TestExecuteNoWait) {
  using namespace llvm::sys;

  if (getenv("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT")) {
    sleep_for(/*seconds*/ 1);
    exit(0);
  }

  std::string Executable =
      sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
  const char *argv[] = {
    Executable.c_str(),
    "--gtest_filter=ProgramTest.TestExecuteNoWait",
    nullptr
  };

  // Add LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT to the environment of the child.
  std::vector<const char *> envp;
  CopyEnvironment(envp);
  envp.push_back("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT=1");
  envp.push_back(nullptr);

  std::string Error;
  bool ExecutionFailed;
  ProcessInfo PI1 = ExecuteNoWait(Executable, argv, &envp[0], nullptr, 0,
                                  &Error, &ExecutionFailed);
  ASSERT_FALSE(ExecutionFailed) << Error;
  ASSERT_NE(PI1.Pid, 0) << "Invalid process id";

  unsigned LoopCount = 0;

  // Test that Wait() with WaitUntilTerminates=true works. In this case,
  // LoopCount should only be incremented once.
  while (true) {
    ++LoopCount;
    ProcessInfo WaitResult = Wait(PI1, 0, true, &Error);
    ASSERT_TRUE(Error.empty());
    if (WaitResult.Pid == PI1.Pid)
      break;
  }

  EXPECT_EQ(LoopCount, 1u) << "LoopCount should be 1";

  ProcessInfo PI2 = ExecuteNoWait(Executable, argv, &envp[0], nullptr, 0,
                                  &Error, &ExecutionFailed);
  ASSERT_FALSE(ExecutionFailed) << Error;
  ASSERT_NE(PI2.Pid, 0) << "Invalid process id";

  // Test that Wait() with SecondsToWait=0 performs a non-blocking wait. In this
  // cse, LoopCount should be greater than 1 (more than one increment occurs).
  while (true) {
    ++LoopCount;
    ProcessInfo WaitResult = Wait(PI2, 0, false, &Error);
    ASSERT_TRUE(Error.empty());
    if (WaitResult.Pid == PI2.Pid)
      break;
  }

  ASSERT_GT(LoopCount, 1u) << "LoopCount should be >1";
}

TEST(ProgramTest, TestExecuteAndWaitTimeout) {
  using namespace llvm::sys;

  if (getenv("LLVM_PROGRAM_TEST_TIMEOUT")) {
    sleep_for(/*seconds*/ 10);
    exit(0);
  }

  std::string Executable =
      sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
  const char *argv[] = {
    Executable.c_str(),
    "--gtest_filter=ProgramTest.TestExecuteAndWaitTimeout",
    nullptr
  };

  // Add LLVM_PROGRAM_TEST_TIMEOUT to the environment of the child.
  std::vector<const char *> envp;
  CopyEnvironment(envp);
  envp.push_back("LLVM_PROGRAM_TEST_TIMEOUT=1");
  envp.push_back(nullptr);

  std::string Error;
  bool ExecutionFailed;
  int RetCode =
      ExecuteAndWait(Executable, argv, &envp[0], nullptr, /*secondsToWait=*/1, 0,
                     &Error, &ExecutionFailed);
  ASSERT_EQ(-2, RetCode);
}

TEST(ProgramTest, TestExecuteNegative) {
  std::string Executable = "i_dont_exist";
  const char *argv[] = { Executable.c_str(), nullptr };

  {
    std::string Error;
    bool ExecutionFailed;
    int RetCode = ExecuteAndWait(Executable, argv, nullptr, nullptr, 0, 0,
                                 &Error, &ExecutionFailed);
    ASSERT_TRUE(RetCode < 0) << "On error ExecuteAndWait should return 0 or "
                                "positive value indicating the result code";
    ASSERT_TRUE(ExecutionFailed);
    ASSERT_FALSE(Error.empty());
  }

  {
    std::string Error;
    bool ExecutionFailed;
    ProcessInfo PI = ExecuteNoWait(Executable, argv, nullptr, nullptr, 0,
                                   &Error, &ExecutionFailed);
    ASSERT_EQ(PI.Pid, 0)
        << "On error ExecuteNoWait should return an invalid ProcessInfo";
    ASSERT_TRUE(ExecutionFailed);
    ASSERT_FALSE(Error.empty());
  }

}

#ifdef LLVM_ON_WIN32
const char utf16le_text[] =
    "\x6c\x00\x69\x00\x6e\x00\x67\x00\xfc\x00\x69\x00\xe7\x00\x61\x00";
const char utf16be_text[] =
    "\x00\x6c\x00\x69\x00\x6e\x00\x67\x00\xfc\x00\x69\x00\xe7\x00\x61";
#endif
const char utf8_text[] = "\x6c\x69\x6e\x67\xc3\xbc\x69\xc3\xa7\x61";

TEST(ProgramTest, TestWriteWithSystemEncoding) {
  SmallString<128> TestDirectory;
  ASSERT_NO_ERROR(fs::createUniqueDirectory("program-test", TestDirectory));
  errs() << "Test Directory: " << TestDirectory << '\n';
  errs().flush();
  SmallString<128> file_pathname(TestDirectory);
  path::append(file_pathname, "international-file.txt");
  // Only on Windows we should encode in UTF16. For other systems, use UTF8
  ASSERT_NO_ERROR(sys::writeFileWithEncoding(file_pathname.c_str(), utf8_text,
                                             sys::WEM_UTF16));
  int fd = 0;
  ASSERT_NO_ERROR(fs::openFileForRead(file_pathname.c_str(), fd));
#if defined(LLVM_ON_WIN32)
  char buf[18];
  ASSERT_EQ(::read(fd, buf, 18), 18);
  if (strncmp(buf, "\xfe\xff", 2) == 0) { // UTF16-BE
    ASSERT_EQ(strncmp(&buf[2], utf16be_text, 16), 0);
  } else if (strncmp(buf, "\xff\xfe", 2) == 0) { // UTF16-LE
    ASSERT_EQ(strncmp(&buf[2], utf16le_text, 16), 0);
  } else {
    FAIL() << "Invalid BOM in UTF-16 file";
  }
#else
  char buf[10];
  ASSERT_EQ(::read(fd, buf, 10), 10);
  ASSERT_EQ(strncmp(buf, utf8_text, 10), 0);
#endif
  ::close(fd);
  ASSERT_NO_ERROR(fs::remove(file_pathname.str()));
  ASSERT_NO_ERROR(fs::remove(TestDirectory.str()));
}

} // end anonymous namespace