| //===- unittests/LockFileManagerTest.cpp - LockFileManager tests ----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Support/LockFileManager.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/Path.h" |
| |
| #include "gtest/gtest.h" |
| |
| #include <memory> |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| TEST(LockFileManagerTest, Basic) { |
| SmallString<64> TmpDir; |
| error_code EC; |
| EC = sys::fs::createUniqueDirectory("LockFileManagerTestDir", TmpDir); |
| ASSERT_FALSE(EC); |
| |
| SmallString<64> LockedFile(TmpDir); |
| sys::path::append(LockedFile, "file.lock"); |
| |
| { |
| // The lock file should not exist, so we should successfully acquire it. |
| LockFileManager Locked1(LockedFile); |
| EXPECT_EQ(LockFileManager::LFS_Owned, Locked1.getState()); |
| |
| // Attempting to reacquire the lock should fail. Waiting on it would cause |
| // deadlock, so don't try that. |
| LockFileManager Locked2(LockedFile); |
| EXPECT_NE(LockFileManager::LFS_Owned, Locked2.getState()); |
| } |
| |
| // Now that the lock is out of scope, the file should be gone. |
| EXPECT_FALSE(sys::fs::exists(StringRef(LockedFile))); |
| |
| sys::fs::remove_all(StringRef(TmpDir)); |
| } |
| |
| } // end anonymous namespace |