llvm-for-llvmta/unittests/Support/raw_pwrite_stream_test.cpp

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//===- raw_pwrite_stream_test.cpp - raw_pwrite_stream tests ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/SmallString.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/raw_ostream.h"
#include "gtest/gtest.h"
using namespace llvm;
#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 { \
}
namespace {
TEST(raw_pwrite_ostreamTest, TestSVector) {
SmallVector<char, 0> Buffer;
raw_svector_ostream OS(Buffer);
OS << "abcd";
StringRef Test = "test";
OS.pwrite(Test.data(), Test.size(), 0);
EXPECT_EQ(Test, OS.str());
#ifdef GTEST_HAS_DEATH_TEST
#ifndef NDEBUG
EXPECT_DEATH(OS.pwrite("12345", 5, 0),
"We don't support extending the stream");
#endif
#endif
}
#ifdef _WIN32
#define setenv(name, var, ignore) _putenv_s(name, var)
#endif
TEST(raw_pwrite_ostreamTest, TestFD) {
SmallString<64> Path;
int FD;
// If we want to clean up from a death test, we have to remove the file from
// the parent process. Have the parent create the file, pass it via
// environment variable to the child, let the child crash, and then remove it
// in the parent.
const char *ParentPath = getenv("RAW_PWRITE_TEST_FILE");
if (ParentPath) {
Path = ParentPath;
ASSERT_NO_ERROR(sys::fs::openFileForRead(Path, FD));
} else {
ASSERT_NO_ERROR(sys::fs::createTemporaryFile("foo", "bar", FD, Path));
setenv("RAW_PWRITE_TEST_FILE", Path.c_str(), true);
}
FileRemover Cleanup(Path);
raw_fd_ostream OS(FD, true);
OS << "abcd";
StringRef Test = "test";
OS.pwrite(Test.data(), Test.size(), 0);
OS.pwrite(Test.data(), Test.size(), 0);
#ifdef GTEST_HAS_DEATH_TEST
#ifndef NDEBUG
EXPECT_DEATH(OS.pwrite("12345", 5, 0),
"We don't support extending the stream");
#endif
#endif
}
#ifdef LLVM_ON_UNIX
TEST(raw_pwrite_ostreamTest, TestDevNull) {
int FD;
sys::fs::openFileForWrite("/dev/null", FD, sys::fs::CD_OpenExisting);
raw_fd_ostream OS(FD, true);
OS << "abcd";
StringRef Test = "test";
OS.pwrite(Test.data(), Test.size(), 0);
OS.pwrite(Test.data(), Test.size(), 0);
}
#endif
}