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//===- 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
// 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 != 0) {
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\\",
0
};
// 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(0);
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, 0 };
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",
0
};
// 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(0);
std::string Error;
bool ExecutionFailed;
ProcessInfo PI1 =
ExecuteNoWait(Executable, argv, &envp[0], 0, 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], 0, 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, TestExecuteNegative) {
std::string Executable = "i_dont_exist";
const char *argv[] = { Executable.c_str(), 0 };
{
std::string Error;
bool ExecutionFailed;
int RetCode =
ExecuteAndWait(Executable, argv, 0, 0, 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, 0, 0, 0, &Error, &ExecutionFailed);
ASSERT_EQ(PI.Pid, 0)
<< "On error ExecuteNoWait should return an invalid ProcessInfo";
ASSERT_TRUE(ExecutionFailed);
ASSERT_FALSE(Error.empty());
}
}
} // end anonymous namespace
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