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[Support] Add writeFileAtomically() to FileUtilities
Differential Revision: https://reviews.llvm.org/D66859 llvm-svn: 371103
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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 | ||
// | ||
//===----------------------------------------------------------------------===// | ||
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#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 "gtest/gtest.h" | ||
#include <fstream> | ||
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using namespace llvm; | ||
using namespace llvm::sys; | ||
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#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 { \ | ||
} | ||
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namespace { | ||
TEST(writeFileAtomicallyTest, Test) { | ||
// Create unique temporary directory for these tests | ||
SmallString<128> RootTestDirectory; | ||
ASSERT_NO_ERROR( | ||
fs::createUniqueDirectory("writeFileAtomicallyTest", RootTestDirectory)); | ||
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SmallString<128> FinalTestfilePath(RootTestDirectory); | ||
sys::path::append(FinalTestfilePath, "foo.txt"); | ||
const std::string TempUniqTestFileModel = FinalTestfilePath.str().str() + "-%%%%%%%%"; | ||
const std::string TestfileContent = "fooFOOfoo"; | ||
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llvm::Error Err = llvm::writeFileAtomically(TempUniqTestFileModel, FinalTestfilePath, TestfileContent); | ||
ASSERT_FALSE(static_cast<bool>(Err)); | ||
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std::ifstream FinalFileStream(FinalTestfilePath.str()); | ||
std::string FinalFileContent; | ||
FinalFileStream >> FinalFileContent; | ||
ASSERT_EQ(FinalFileContent, TestfileContent); | ||
} | ||
} // anonymous namespace |