FileUtilitiesTest.cpp
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//===- llvm/unittest/Support/FileUtilitiesTest.cpp - unit 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/Support/FileUtilities.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Testing/Support/SupportHelpers.h"
#include "gtest/gtest.h"
#include <fstream>
using namespace llvm;
using namespace llvm::sys;
using llvm::unittest::TempDir;
#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(writeFileAtomicallyTest, Test) {
// Create unique temporary directory for these tests
TempDir RootTestDirectory("writeFileAtomicallyTest", /*Unique*/ true);
SmallString<128> FinalTestfilePath(RootTestDirectory.path());
sys::path::append(FinalTestfilePath, "foo.txt");
const std::string TempUniqTestFileModel =
std::string(FinalTestfilePath) + "-%%%%%%%%";
const std::string TestfileContent = "fooFOOfoo";
llvm::Error Err = llvm::writeFileAtomically(TempUniqTestFileModel, FinalTestfilePath, TestfileContent);
ASSERT_FALSE(static_cast<bool>(Err));
std::ifstream FinalFileStream(std::string(FinalTestfilePath.str()));
std::string FinalFileContent;
FinalFileStream >> FinalFileContent;
ASSERT_EQ(FinalFileContent, TestfileContent);
}
} // anonymous namespace