[ARM] Remove declaration of unimplemented function. NFC.
[llvm-complete.git] / unittests / Support / FileUtilitiesTest.cpp
blob2bf9dc5eb8c2cba52db3d475a37f54d1f31e0c5d
1 //===- llvm/unittest/Support/FileUtilitiesTest.cpp - unit tests -----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
9 #include "llvm/Support/FileUtilities.h"
10 #include "llvm/Support/Errc.h"
11 #include "llvm/Support/ErrorHandling.h"
12 #include "llvm/Support/FileSystem.h"
13 #include "llvm/Support/MemoryBuffer.h"
14 #include "llvm/Support/Path.h"
15 #include "gtest/gtest.h"
16 #include <fstream>
18 using namespace llvm;
19 using namespace llvm::sys;
21 #define ASSERT_NO_ERROR(x) \
22 if (std::error_code ASSERT_NO_ERROR_ec = x) { \
23 SmallString<128> MessageStorage; \
24 raw_svector_ostream Message(MessageStorage); \
25 Message << #x ": did not return errc::success.\n" \
26 << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n" \
27 << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n"; \
28 GTEST_FATAL_FAILURE_(MessageStorage.c_str()); \
29 } else { \
32 namespace {
33 TEST(writeFileAtomicallyTest, Test) {
34 // Create unique temporary directory for these tests
35 SmallString<128> RootTestDirectory;
36 ASSERT_NO_ERROR(
37 fs::createUniqueDirectory("writeFileAtomicallyTest", RootTestDirectory));
39 SmallString<128> FinalTestfilePath(RootTestDirectory);
40 sys::path::append(FinalTestfilePath, "foo.txt");
41 const std::string TempUniqTestFileModel = FinalTestfilePath.str().str() + "-%%%%%%%%";
42 const std::string TestfileContent = "fooFOOfoo";
44 llvm::Error Err = llvm::writeFileAtomically(TempUniqTestFileModel, FinalTestfilePath, TestfileContent);
45 ASSERT_FALSE(static_cast<bool>(Err));
47 std::ifstream FinalFileStream(FinalTestfilePath.str());
48 std::string FinalFileContent;
49 FinalFileStream >> FinalFileContent;
50 ASSERT_EQ(FinalFileContent, TestfileContent);
52 } // anonymous namespace