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annotate unittests/Support/ProgramTest.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children 54457678186b
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1 //===- unittest/Support/ProgramTest.cpp -----------------------------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "llvm/Support/CommandLine.h"
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11 #include "llvm/Support/FileSystem.h"
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12 #include "llvm/Support/Path.h"
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13 #include "llvm/Support/Program.h"
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14 #include "gtest/gtest.h"
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15
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16 #include <stdlib.h>
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17 #if defined(__APPLE__)
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18 # include <crt_externs.h>
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19 #elif !defined(_MSC_VER)
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20 // Forward declare environ in case it's not provided by stdlib.h.
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21 extern char **environ;
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22 #endif
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23
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24 #if defined(LLVM_ON_UNIX)
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25 #include <unistd.h>
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26 void sleep_for(unsigned int seconds) {
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27 sleep(seconds);
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28 }
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29 #elif defined(LLVM_ON_WIN32)
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30 #include <windows.h>
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31 void sleep_for(unsigned int seconds) {
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32 Sleep(seconds * 1000);
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33 }
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34 #else
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35 #error sleep_for is not implemented on your platform.
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36 #endif
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37
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38 // From TestMain.cpp.
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39 extern const char *TestMainArgv0;
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40
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41 namespace {
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42
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43 using namespace llvm;
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44 using namespace sys;
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45
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46 static cl::opt<std::string>
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47 ProgramTestStringArg1("program-test-string-arg1");
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48 static cl::opt<std::string>
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49 ProgramTestStringArg2("program-test-string-arg2");
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50
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51 static void CopyEnvironment(std::vector<const char *> &out) {
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52 #ifdef __APPLE__
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53 char **envp = *_NSGetEnviron();
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54 #else
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55 // environ seems to work for Windows and most other Unices.
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56 char **envp = environ;
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57 #endif
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58 while (*envp != 0) {
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59 out.push_back(*envp);
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60 ++envp;
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61 }
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62 }
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63
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64 TEST(ProgramTest, CreateProcessTrailingSlash) {
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65 if (getenv("LLVM_PROGRAM_TEST_CHILD")) {
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66 if (ProgramTestStringArg1 == "has\\\\ trailing\\" &&
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67 ProgramTestStringArg2 == "has\\\\ trailing\\") {
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68 exit(0); // Success! The arguments were passed and parsed.
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69 }
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70 exit(1);
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71 }
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72
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73 std::string my_exe =
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74 sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
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75 const char *argv[] = {
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76 my_exe.c_str(),
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77 "--gtest_filter=ProgramTest.CreateProcessTrailingSlash",
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78 "-program-test-string-arg1", "has\\\\ trailing\\",
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79 "-program-test-string-arg2", "has\\\\ trailing\\",
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80 0
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81 };
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82
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83 // Add LLVM_PROGRAM_TEST_CHILD to the environment of the child.
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84 std::vector<const char *> envp;
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85 CopyEnvironment(envp);
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86 envp.push_back("LLVM_PROGRAM_TEST_CHILD=1");
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87 envp.push_back(0);
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88
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89 std::string error;
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90 bool ExecutionFailed;
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91 // Redirect stdout and stdin to NUL, but let stderr through.
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92 #ifdef LLVM_ON_WIN32
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93 StringRef nul("NUL");
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94 #else
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95 StringRef nul("/dev/null");
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96 #endif
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97 const StringRef *redirects[] = { &nul, &nul, 0 };
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98 int rc = ExecuteAndWait(my_exe, argv, &envp[0], redirects,
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99 /*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &error,
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100 &ExecutionFailed);
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101 EXPECT_FALSE(ExecutionFailed) << error;
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102 EXPECT_EQ(0, rc);
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103 }
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104
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105 TEST(ProgramTest, TestExecuteNoWait) {
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106 using namespace llvm::sys;
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107
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108 if (getenv("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT")) {
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109 sleep_for(/*seconds*/ 1);
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110 exit(0);
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111 }
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112
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113 std::string Executable =
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114 sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
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115 const char *argv[] = {
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116 Executable.c_str(),
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117 "--gtest_filter=ProgramTest.TestExecuteNoWait",
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118 0
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119 };
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120
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121 // Add LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT to the environment of the child.
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122 std::vector<const char *> envp;
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123 CopyEnvironment(envp);
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124 envp.push_back("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT=1");
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125 envp.push_back(0);
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126
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127 std::string Error;
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128 bool ExecutionFailed;
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129 ProcessInfo PI1 =
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130 ExecuteNoWait(Executable, argv, &envp[0], 0, 0, &Error, &ExecutionFailed);
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131 ASSERT_FALSE(ExecutionFailed) << Error;
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132 ASSERT_NE(PI1.Pid, 0) << "Invalid process id";
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133
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134 unsigned LoopCount = 0;
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135
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136 // Test that Wait() with WaitUntilTerminates=true works. In this case,
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137 // LoopCount should only be incremented once.
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138 while (true) {
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139 ++LoopCount;
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140 ProcessInfo WaitResult = Wait(PI1, 0, true, &Error);
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141 ASSERT_TRUE(Error.empty());
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142 if (WaitResult.Pid == PI1.Pid)
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143 break;
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144 }
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145
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146 EXPECT_EQ(LoopCount, 1u) << "LoopCount should be 1";
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147
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148 ProcessInfo PI2 =
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149 ExecuteNoWait(Executable, argv, &envp[0], 0, 0, &Error, &ExecutionFailed);
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150 ASSERT_FALSE(ExecutionFailed) << Error;
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151 ASSERT_NE(PI2.Pid, 0) << "Invalid process id";
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152
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153 // Test that Wait() with SecondsToWait=0 performs a non-blocking wait. In this
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154 // cse, LoopCount should be greater than 1 (more than one increment occurs).
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155 while (true) {
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156 ++LoopCount;
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157 ProcessInfo WaitResult = Wait(PI2, 0, false, &Error);
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158 ASSERT_TRUE(Error.empty());
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159 if (WaitResult.Pid == PI2.Pid)
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160 break;
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161 }
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162
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163 ASSERT_GT(LoopCount, 1u) << "LoopCount should be >1";
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164 }
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165
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166 TEST(ProgramTest, TestExecuteNegative) {
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167 std::string Executable = "i_dont_exist";
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168 const char *argv[] = { Executable.c_str(), 0 };
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169
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170 {
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171 std::string Error;
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172 bool ExecutionFailed;
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173 int RetCode =
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174 ExecuteAndWait(Executable, argv, 0, 0, 0, 0, &Error, &ExecutionFailed);
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175 ASSERT_TRUE(RetCode < 0) << "On error ExecuteAndWait should return 0 or "
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176 "positive value indicating the result code";
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177 ASSERT_TRUE(ExecutionFailed);
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178 ASSERT_FALSE(Error.empty());
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179 }
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180
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181 {
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182 std::string Error;
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183 bool ExecutionFailed;
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184 ProcessInfo PI =
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185 ExecuteNoWait(Executable, argv, 0, 0, 0, &Error, &ExecutionFailed);
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186 ASSERT_EQ(PI.Pid, 0)
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187 << "On error ExecuteNoWait should return an invalid ProcessInfo";
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188 ASSERT_TRUE(ExecutionFailed);
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189 ASSERT_FALSE(Error.empty());
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190 }
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191
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192 }
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193
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194 } // end anonymous namespace