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Modified the implementation of fs::GetUniqueID on Windows such that it actually finds a unique identifier for a file. Also adds unit tests for GetUniqueID.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184351 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Aaron Ballman
2013-06-19 21:03:50 +00:00
parent 7032c883cd
commit 4655485eb7
3 changed files with 51 additions and 9 deletions
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36
unittests/Support/Path.cpp
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@@ -164,6 +164,42 @@ protected:
}
};
TEST_F(FileSystemTest, Unique) {
// Create a temp file.
int FileDescriptor;
SmallString<64> TempPath;
ASSERT_NO_ERROR(
fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor, TempPath));
// The same file should return an identical unique id.
uint64_t F1, F2;
ASSERT_NO_ERROR(fs::GetUniqueID(Twine(TempPath), F1));
ASSERT_NO_ERROR(fs::GetUniqueID(Twine(TempPath), F2));
ASSERT_EQ(F1, F2);
// Different files should return different unique ids.
int FileDescriptor2;
SmallString<64> TempPath2;
ASSERT_NO_ERROR(
fs::unique_file("%%-%%-%%-%%.temp", FileDescriptor2, TempPath2));
uint64_t D;
ASSERT_NO_ERROR(fs::GetUniqueID(Twine(TempPath2), D));
ASSERT_NE(D, F1);
::close(FileDescriptor2);
ASSERT_NO_ERROR(fs::remove(Twine(TempPath2)));
// Two paths representing the same file on disk should still provide the
// same unique id. We can test this by making a hard link.
ASSERT_NO_ERROR(fs::create_hard_link(Twine(TempPath), Twine(TempPath2)));
uint64_t D2;
ASSERT_NO_ERROR(fs::GetUniqueID(Twine(TempPath2), D2));
ASSERT_EQ(D2, F1);
::close(FileDescriptor);
}
TEST_F(FileSystemTest, TempFiles) {
// Create a temp file.
int FileDescriptor;