[unittest] Use Support/thread.h instead of <thread> (second try)
[oota-llvm.git] / unittests / Support / ProgramTest.cpp
index d8cb42af03e3954db97ce4d2e27e74b163b64534..47a3dbb5fb1f1135b0e13fdb142a2aa5f6ed6e61 100644 (file)
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/Support/ConvertUTF.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"
@@ -34,6 +35,16 @@ void sleep_for(unsigned int seconds) {
 #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;
 
@@ -47,20 +58,110 @@ 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();
+class ProgramEnvTest : public testing::Test {
+  std::vector<const char *> EnvTable;
+  std::vector<std::string> EnvStorage;
+
+protected:
+  void SetUp() override {
+    auto EnvP = [] {
+#if defined(LLVM_ON_WIN32)
+      _wgetenv(L"TMP"); // Populate _wenviron, initially is null
+      return _wenviron;
+#elif defined(__APPLE__)
+      return *_NSGetEnviron();
+#else
+      return environ;
+#endif
+    }();
+    ASSERT_TRUE(EnvP);
+
+    auto prepareEnvVar = [this](decltype(*EnvP) Var) {
+#if defined(LLVM_ON_WIN32)
+      // On Windows convert UTF16 encoded variable to UTF8
+      auto Len = wcslen(Var);
+      ArrayRef<char> Ref{reinterpret_cast<char const *>(Var),
+                         Len * sizeof(*Var)};
+      EnvStorage.emplace_back();
+      auto convStatus = convertUTF16ToUTF8String(Ref, EnvStorage.back());
+      EXPECT_TRUE(convStatus);
+      return EnvStorage.back().c_str();
 #else
-  // environ seems to work for Windows and most other Unices.
-  char **envp = environ;
+      return Var;
 #endif
-  while (*envp != 0) {
-    out.push_back(*envp);
-    ++envp;
+    };
+
+    while (*EnvP != nullptr) {
+      EnvTable.emplace_back(prepareEnvVar(*EnvP));
+      ++EnvP;
+    }
+  }
+
+  void TearDown() override {
+    EnvTable.clear();
+    EnvStorage.clear();
   }
+
+  void addEnvVar(const char *Var) {
+    ASSERT_TRUE(EnvTable.empty() || EnvTable.back()) << "Env table sealed";
+    EnvTable.emplace_back(Var);
+  }
+
+  const char **getEnviron() {
+    if (EnvTable.back() != nullptr)
+      EnvTable.emplace_back(nullptr); // Seal table.
+    return &EnvTable[0];
+  }
+};
+
+#ifdef LLVM_ON_WIN32
+TEST_F(ProgramEnvTest, CreateProcessLongPath) {
+  if (getenv("LLVM_PROGRAM_TEST_LONG_PATH"))
+    exit(0);
+
+  // getMainExecutable returns an absolute path; prepend the long-path prefix.
+  std::string MyAbsExe =
+      sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
+  std::string MyExe;
+  if (!StringRef(MyAbsExe).startswith("\\\\?\\"))
+    MyExe.append("\\\\?\\");
+  MyExe.append(MyAbsExe);
+
+  const char *ArgV[] = {
+    MyExe.c_str(),
+    "--gtest_filter=ProgramEnvTest.CreateProcessLongPath",
+    nullptr
+  };
+
+  // Add LLVM_PROGRAM_TEST_LONG_PATH to the environment of the child.
+  addEnvVar("LLVM_PROGRAM_TEST_LONG_PATH=1");
+
+  // Redirect stdout to a long path.
+  SmallString<128> TestDirectory;
+  ASSERT_NO_ERROR(
+    fs::createUniqueDirectory("program-redirect-test", TestDirectory));
+  SmallString<256> LongPath(TestDirectory);
+  LongPath.push_back('\\');
+  // MAX_PATH = 260
+  LongPath.append(260 - TestDirectory.size(), 'a');
+  StringRef LongPathRef(LongPath);
+
+  std::string Error;
+  bool ExecutionFailed;
+  const StringRef *Redirects[] = { nullptr, &LongPathRef, nullptr };
+  int RC = ExecuteAndWait(MyExe, ArgV, getEnviron(), Redirects,
+    /*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &Error,
+    &ExecutionFailed);
+  EXPECT_FALSE(ExecutionFailed) << Error;
+  EXPECT_EQ(0, RC);
+
+  // Remove the long stdout.
+  ASSERT_NO_ERROR(fs::remove(Twine(LongPath)));
+  ASSERT_NO_ERROR(fs::remove(Twine(TestDirectory)));
 }
+#endif
 
-TEST(ProgramTest, CreateProcessTrailingSlash) {
+TEST_F(ProgramEnvTest, CreateProcessTrailingSlash) {
   if (getenv("LLVM_PROGRAM_TEST_CHILD")) {
     if (ProgramTestStringArg1 == "has\\\\ trailing\\" &&
         ProgramTestStringArg2 == "has\\\\ trailing\\") {
@@ -73,17 +174,14 @@ TEST(ProgramTest, CreateProcessTrailingSlash) {
       sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
   const char *argv[] = {
     my_exe.c_str(),
-    "--gtest_filter=ProgramTest.CreateProcessTrailingSlash",
+    "--gtest_filter=ProgramEnvTest.CreateProcessTrailingSlash",
     "-program-test-string-arg1", "has\\\\ trailing\\",
     "-program-test-string-arg2", "has\\\\ trailing\\",
-    0
+    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(0);
+  addEnvVar("LLVM_PROGRAM_TEST_CHILD=1");
 
   std::string error;
   bool ExecutionFailed;
@@ -93,15 +191,15 @@ TEST(ProgramTest, CreateProcessTrailingSlash) {
 #else
   StringRef nul("/dev/null");
 #endif
-  const StringRef *redirects[] = { &nul, &nul, 0 };
-  int rc = ExecuteAndWait(my_exe, argv, &envp[0], redirects,
+  const StringRef *redirects[] = { &nul, &nul, nullptr };
+  int rc = ExecuteAndWait(my_exe, argv, getEnviron(), redirects,
                           /*secondsToWait=*/ 10, /*memoryLimit=*/ 0, &error,
                           &ExecutionFailed);
   EXPECT_FALSE(ExecutionFailed) << error;
   EXPECT_EQ(0, rc);
 }
 
-TEST(ProgramTest, TestExecuteNoWait) {
+TEST_F(ProgramEnvTest, TestExecuteNoWait) {
   using namespace llvm::sys;
 
   if (getenv("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT")) {
@@ -113,20 +211,17 @@ TEST(ProgramTest, TestExecuteNoWait) {
       sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
   const char *argv[] = {
     Executable.c_str(),
-    "--gtest_filter=ProgramTest.TestExecuteNoWait",
-    0
+    "--gtest_filter=ProgramEnvTest.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(0);
+  addEnvVar("LLVM_PROGRAM_TEST_EXECUTE_NO_WAIT=1");
 
   std::string Error;
   bool ExecutionFailed;
-  ProcessInfo PI1 =
-      ExecuteNoWait(Executable, argv, &envp[0], 0, 0, &Error, &ExecutionFailed);
+  ProcessInfo PI1 = ExecuteNoWait(Executable, argv, getEnviron(), nullptr, 0,
+                                  &Error, &ExecutionFailed);
   ASSERT_FALSE(ExecutionFailed) << Error;
   ASSERT_NE(PI1.Pid, 0) << "Invalid process id";
 
@@ -144,8 +239,8 @@ TEST(ProgramTest, TestExecuteNoWait) {
 
   EXPECT_EQ(LoopCount, 1u) << "LoopCount should be 1";
 
-  ProcessInfo PI2 =
-      ExecuteNoWait(Executable, argv, &envp[0], 0, 0, &Error, &ExecutionFailed);
+  ProcessInfo PI2 = ExecuteNoWait(Executable, argv, getEnviron(), nullptr, 0,
+                                  &Error, &ExecutionFailed);
   ASSERT_FALSE(ExecutionFailed) << Error;
   ASSERT_NE(PI2.Pid, 0) << "Invalid process id";
 
@@ -162,7 +257,7 @@ TEST(ProgramTest, TestExecuteNoWait) {
   ASSERT_GT(LoopCount, 1u) << "LoopCount should be >1";
 }
 
-TEST(ProgramTest, TestExecuteAndWaitTimeout) {
+TEST_F(ProgramEnvTest, TestExecuteAndWaitTimeout) {
   using namespace llvm::sys;
 
   if (getenv("LLVM_PROGRAM_TEST_TIMEOUT")) {
@@ -174,33 +269,30 @@ TEST(ProgramTest, TestExecuteAndWaitTimeout) {
       sys::fs::getMainExecutable(TestMainArgv0, &ProgramTestStringArg1);
   const char *argv[] = {
     Executable.c_str(),
-    "--gtest_filter=ProgramTest.TestExecuteAndWaitTimeout",
-    0
+    "--gtest_filter=ProgramEnvTest.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(0);
+ addEnvVar("LLVM_PROGRAM_TEST_TIMEOUT=1");
 
   std::string Error;
   bool ExecutionFailed;
   int RetCode =
-      ExecuteAndWait(Executable, argv, &envp[0], 0, /*secondsToWait=*/1, 0,
+      ExecuteAndWait(Executable, argv, getEnviron(), 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(), 0 };
+  const char *argv[] = { Executable.c_str(), nullptr };
 
   {
     std::string Error;
     bool ExecutionFailed;
-    int RetCode =
-        ExecuteAndWait(Executable, argv, 0, 0, 0, 0, &Error, &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);
@@ -210,8 +302,8 @@ TEST(ProgramTest, TestExecuteNegative) {
   {
     std::string Error;
     bool ExecutionFailed;
-    ProcessInfo PI =
-        ExecuteNoWait(Executable, argv, 0, 0, 0, &Error, &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);
@@ -220,4 +312,44 @@ TEST(ProgramTest, TestExecuteNegative) {
 
 }
 
+#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