Fix boolean logic in LockFileManager and test it
This fixes a bug from r187826.
Reviewers: hans
Differential Revision: http://llvm-reviews.chandlerc.com/D1304
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187846 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/LockFileManagerTest.cpp b/unittests/Support/LockFileManagerTest.cpp
new file mode 100644
index 0000000..5c73b9f
--- /dev/null
+++ b/unittests/Support/LockFileManagerTest.cpp
@@ -0,0 +1,48 @@
+//===- 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