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comparison 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
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children 54457678186b
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-1:000000000000 0:95c75e76d11b
1 //===- unittest/Support/ProgramTest.cpp -----------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/Support/CommandLine.h"
11 #include "llvm/Support/FileSystem.h"
12 #include "llvm/Support/Path.h"
13 #include "llvm/Support/Program.h"
14 #include "gtest/gtest.h"
15
16 #include <stdlib.h>
17 #if defined(__APPLE__)
18 # include <crt_externs.h>
19 #elif !defined(_MSC_VER)
20 // Forward declare environ in case it's not provided by stdlib.h.
21 extern char **environ;
22 #endif
23
24 #if defined(LLVM_ON_UNIX)
25 #include <unistd.h>
26 void sleep_for(unsigned int seconds) {
27 sleep(seconds);
28 }
29 #elif defined(LLVM_ON_WIN32)
30 #include <windows.h>
31 void sleep_for(unsigned int seconds) {
32 Sleep(seconds * 1000);
33 }
34 #else
35 #error sleep_for is not implemented on your platform.
36 #endif
37
38 // From TestMain.cpp.
39 extern const char *TestMainArgv0;
40
41 namespace {
42
43 using namespace llvm;
44 using namespace sys;
45
46 static cl::opt<std::string>
47 ProgramTestStringArg1("program-test-string-arg1");
48 static cl::opt<std::string>
49 ProgramTestStringArg2("program-test-string-arg2");
50
51 static void CopyEnvironment(std::vector<const char *> &out) {
52 #ifdef __APPLE__
53 char **envp = *_NSGetEnviron();
54 #else
55 // environ seems to work for Windows and most other Unices.
56 char **envp = environ;
57 #endif
58 while (*envp != 0) {
59 out.push_back(*envp);
60 ++envp;
61 }
62 }
63
64 TEST(ProgramTest, CreateProcessTrailingSlash) {
65 if (getenv("LLVM_PROGRAM_TEST_CHILD")) {
66 if (ProgramTestStringArg1 == "has\\\\ trailing\\" &&
67 ProgramTestStringArg2 == "has\\\\ trailing\\") {
68 exit(0); // Success! The arguments were passed and parsed.
69 }
70 exit(1);
71 }
72
73 std::string my_exe =
74 sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
75 const char *argv[] = {
76 my_exe.c_str(),
77 "--gtest_filter=ProgramTest.CreateProcessTrailingSlash",
78 "-program-test-string-arg1", "has\\\\ trailing\\",
79 "-program-test-string-arg2", "has\\\\ trailing\\",
80 0
81 };
82
83 // Add LLVM_PROGRAM_TEST_CHILD to the environment of the child.
84 std::vector<const char *> envp;
85 CopyEnvironment(envp);
86 envp.push_back("LLVM_PROGRAM_TEST_CHILD=1");
87 envp.push_back(0);
88
89 std::string error;
90 bool ExecutionFailed;
91 // Redirect stdout and stdin to NUL, but let stderr through.
92 #ifdef LLVM_ON_WIN32
93 StringRef nul("NUL");
94 #else
95 StringRef nul("/dev/null");
96 #endif
97 const StringRef *redirects[] = { &nul, &nul, 0 };
98 int rc = ExecuteAndWait(my_exe, argv, &envp[0], redirects,
99 /*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &error,
100 &ExecutionFailed);
101 EXPECT_FALSE(ExecutionFailed) << error;
102 EXPECT_EQ(0, rc);
103 }
104
105 TEST(ProgramTest, TestExecuteNoWait) {
106 using namespace llvm::sys;
107
108 if (getenv("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT")) {
109 sleep_for(/*seconds*/ 1);
110 exit(0);
111 }
112
113 std::string Executable =
114 sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
115 const char *argv[] = {
116 Executable.c_str(),
117 "--gtest_filter=ProgramTest.TestExecuteNoWait",
118 0
119 };
120
121 // Add LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT to the environment of the child.
122 std::vector<const char *> envp;
123 CopyEnvironment(envp);
124 envp.push_back("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT=1");
125 envp.push_back(0);
126
127 std::string Error;
128 bool ExecutionFailed;
129 ProcessInfo PI1 =
130 ExecuteNoWait(Executable, argv, &envp[0], 0, 0, &Error, &ExecutionFailed);
131 ASSERT_FALSE(ExecutionFailed) << Error;
132 ASSERT_NE(PI1.Pid, 0) << "Invalid process id";
133
134 unsigned LoopCount = 0;
135
136 // Test that Wait() with WaitUntilTerminates=true works. In this case,
137 // LoopCount should only be incremented once.
138 while (true) {
139 ++LoopCount;
140 ProcessInfo WaitResult = Wait(PI1, 0, true, &Error);
141 ASSERT_TRUE(Error.empty());
142 if (WaitResult.Pid == PI1.Pid)
143 break;
144 }
145
146 EXPECT_EQ(LoopCount, 1u) << "LoopCount should be 1";
147
148 ProcessInfo PI2 =
149 ExecuteNoWait(Executable, argv, &envp[0], 0, 0, &Error, &ExecutionFailed);
150 ASSERT_FALSE(ExecutionFailed) << Error;
151 ASSERT_NE(PI2.Pid, 0) << "Invalid process id";
152
153 // Test that Wait() with SecondsToWait=0 performs a non-blocking wait. In this
154 // cse, LoopCount should be greater than 1 (more than one increment occurs).
155 while (true) {
156 ++LoopCount;
157 ProcessInfo WaitResult = Wait(PI2, 0, false, &Error);
158 ASSERT_TRUE(Error.empty());
159 if (WaitResult.Pid == PI2.Pid)
160 break;
161 }
162
163 ASSERT_GT(LoopCount, 1u) << "LoopCount should be >1";
164 }
165
166 TEST(ProgramTest, TestExecuteNegative) {
167 std::string Executable = "i_dont_exist";
168 const char *argv[] = { Executable.c_str(), 0 };
169
170 {
171 std::string Error;
172 bool ExecutionFailed;
173 int RetCode =
174 ExecuteAndWait(Executable, argv, 0, 0, 0, 0, &Error, &ExecutionFailed);
175 ASSERT_TRUE(RetCode < 0) << "On error ExecuteAndWait should return 0 or "
176 "positive value indicating the result code";
177 ASSERT_TRUE(ExecutionFailed);
178 ASSERT_FALSE(Error.empty());
179 }
180
181 {
182 std::string Error;
183 bool ExecutionFailed;
184 ProcessInfo PI =
185 ExecuteNoWait(Executable, argv, 0, 0, 0, &Error, &ExecutionFailed);
186 ASSERT_EQ(PI.Pid, 0)
187 << "On error ExecuteNoWait should return an invalid ProcessInfo";
188 ASSERT_TRUE(ExecutionFailed);
189 ASSERT_FALSE(Error.empty());
190 }
191
192 }
193
194 } // end anonymous namespace