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annotate unittests/Support/LockFileManagerTest.cpp @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
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children 54457678186b
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1 //===- unittests/LockFileManagerTest.cpp - LockFileManager tests ----------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "llvm/Support/LockFileManager.h"
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11 #include "llvm/Support/FileSystem.h"
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12 #include "llvm/Support/Path.h"
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13
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14 #include "gtest/gtest.h"
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15
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16 #include <memory>
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17
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18 using namespace llvm;
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19
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20 namespace {
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21
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22 TEST(LockFileManagerTest, Basic) {
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23 SmallString<64> TmpDir;
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24 error_code EC;
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25 EC = sys::fs::createUniqueDirectory("LockFileManagerTestDir", TmpDir);
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26 ASSERT_FALSE(EC);
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27
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28 SmallString<64> LockedFile(TmpDir);
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29 sys::path::append(LockedFile, "file.lock");
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30
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31 {
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32 // The lock file should not exist, so we should successfully acquire it.
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33 LockFileManager Locked1(LockedFile);
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34 EXPECT_EQ(LockFileManager::LFS_Owned, Locked1.getState());
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35
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36 // Attempting to reacquire the lock should fail. Waiting on it would cause
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37 // deadlock, so don't try that.
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38 LockFileManager Locked2(LockedFile);
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39 EXPECT_NE(LockFileManager::LFS_Owned, Locked2.getState());
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40 }
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41
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42 // Now that the lock is out of scope, the file should be gone.
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43 EXPECT_FALSE(sys::fs::exists(StringRef(LockedFile)));
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44
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45 sys::fs::remove_all(StringRef(TmpDir));
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46 }
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47
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48 } // end anonymous namespace