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/Path.h"
12 #include "llvm/Support/Program.h"
13 #include "gtest/gtest.h"
14 
15 #include <stdlib.h>
16 #if defined(__APPLE__)
17 # include <crt_externs.h>
18 #elif !defined(_MSC_VER)
19 // Forward declare environ in case it's not provided by stdlib.h.
20 extern char **environ;
21 #endif
22 
23 // From TestMain.cpp.
24 extern const char *TestMainArgv0;
25 
26 namespace {
27 
28 using namespace llvm;
29 using namespace sys;
30 
31 static cl::opt<std::string>
32 ProgramTestStringArg1("program-test-string-arg1");
33 static cl::opt<std::string>
34 ProgramTestStringArg2("program-test-string-arg2");
35 
36 static void CopyEnvironment(std::vector<const char *> &out) {
37 #ifdef __APPLE__
38   char **envp = *_NSGetEnviron();
39 #else
40   // environ seems to work for Windows and most other Unices.
41   char **envp = environ;
42 #endif
43   while (*envp != 0) {
44     out.push_back(*envp);
45     ++envp;
46   }
47 }
48 
49 TEST(ProgramTest, CreateProcessTrailingSlash) {
50   if (getenv("LLVM_PROGRAM_TEST_CHILD")) {
51     if (ProgramTestStringArg1 == "has\\\\ trailing\\" &&
52         ProgramTestStringArg2 == "has\\\\ trailing\\") {
53       exit(0);  // Success!  The arguments were passed and parsed.
54     }
55     exit(1);
56   }
57 
58   Path my_exe = Path::GetMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
59   const char *argv[] = {
60     my_exe.c_str(),
61     "--gtest_filter=ProgramTest.CreateProcessTrailingSlashChild",
62     "-program-test-string-arg1", "has\\\\ trailing\\",
63     "-program-test-string-arg2", "has\\\\ trailing\\",
64     0
65   };
66 
67   // Add LLVM_PROGRAM_TEST_CHILD to the environment of the child.
68   std::vector<const char *> envp;
69   CopyEnvironment(envp);
70   envp.push_back("LLVM_PROGRAM_TEST_CHILD=1");
71   envp.push_back(0);
72 
73   std::string error;
74   bool ExecutionFailed;
75   // Redirect stdout and stdin to NUL, but let stderr through.
76 #ifdef LLVM_ON_WIN32
77   Path nul("NUL");
78 #else
79   Path nul("/dev/null");
80 #endif
81   const Path *redirects[] = { &nul, &nul, 0 };
82   int rc = Program::ExecuteAndWait(my_exe, argv, &envp[0], redirects,
83                                    /*secondsToWait=*/10, /*memoryLimit=*/0,
84                                    &error, &ExecutionFailed);
85   EXPECT_FALSE(ExecutionFailed) << error;
86   EXPECT_EQ(0, rc);
87 }
88 
89 } // end anonymous namespace
90