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0975a7654a
Some LLVM unit tests forget to clean up temporary files and directories. Introduce RAII classes for cleaning them up. Refactor the tests to use those classes. Differential Revision: https://reviews.llvm.org/D83228
108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
//===- unittests/LockFileManagerTest.cpp - LockFileManager tests ----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/LockFileManager.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Testing/Support/SupportHelpers.h"
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#include "gtest/gtest.h"
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#include <memory>
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using namespace llvm;
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using llvm::unittest::TempDir;
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namespace {
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TEST(LockFileManagerTest, Basic) {
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TempDir TmpDir("LockFileManagerTestDir", /*Unique*/ true);
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SmallString<64> LockedFile(TmpDir.path());
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sys::path::append(LockedFile, "file.lock");
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{
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// The lock file should not exist, so we should successfully acquire it.
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LockFileManager Locked1(LockedFile);
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EXPECT_EQ(LockFileManager::LFS_Owned, Locked1.getState());
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// Attempting to reacquire the lock should fail. Waiting on it would cause
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// deadlock, so don't try that.
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LockFileManager Locked2(LockedFile);
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EXPECT_NE(LockFileManager::LFS_Owned, Locked2.getState());
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}
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// Now that the lock is out of scope, the file should be gone.
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EXPECT_FALSE(sys::fs::exists(StringRef(LockedFile)));
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}
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TEST(LockFileManagerTest, LinkLockExists) {
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TempDir LockFileManagerTestDir("LockFileManagerTestDir", /*Unique*/ true);
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SmallString<64> LockedFile(LockFileManagerTestDir.path());
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sys::path::append(LockedFile, "file");
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SmallString<64> FileLocK(LockFileManagerTestDir.path());
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sys::path::append(FileLocK, "file.lock");
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SmallString<64> TmpFileLock(LockFileManagerTestDir.path());
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sys::path::append(TmpFileLock, "file.lock-000");
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int FD;
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std::error_code EC = sys::fs::openFileForWrite(StringRef(TmpFileLock), FD);
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ASSERT_FALSE(EC);
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int Ret = close(FD);
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ASSERT_EQ(Ret, 0);
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EC = sys::fs::create_link(TmpFileLock.str(), FileLocK.str());
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ASSERT_FALSE(EC);
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EC = sys::fs::remove(StringRef(TmpFileLock));
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ASSERT_FALSE(EC);
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{
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// The lock file doesn't point to a real file, so we should successfully
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// acquire it.
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LockFileManager Locked(LockedFile);
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EXPECT_EQ(LockFileManager::LFS_Owned, Locked.getState());
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}
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// Now that the lock is out of scope, the file should be gone.
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EXPECT_FALSE(sys::fs::exists(StringRef(LockedFile)));
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}
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TEST(LockFileManagerTest, RelativePath) {
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TempDir LockFileManagerTestDir("LockFileManagerTestDir", /*Unique*/ true);
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char PathBuf[1024];
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const char *OrigPath = getcwd(PathBuf, 1024);
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ASSERT_FALSE(chdir(LockFileManagerTestDir.path().data()));
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TempDir inner("inner");
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SmallString<64> LockedFile(inner.path());
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sys::path::append(LockedFile, "file");
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SmallString<64> FileLock(LockedFile);
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FileLock += ".lock";
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{
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// The lock file should not exist, so we should successfully acquire it.
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LockFileManager Locked(LockedFile);
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EXPECT_EQ(LockFileManager::LFS_Owned, Locked.getState());
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EXPECT_TRUE(sys::fs::exists(FileLock.str()));
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}
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// Now that the lock is out of scope, the file should be gone.
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EXPECT_FALSE(sys::fs::exists(LockedFile.str()));
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EXPECT_FALSE(sys::fs::exists(FileLock.str()));
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ASSERT_FALSE(chdir(OrigPath));
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}
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} // end anonymous namespace
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