unittests/Support: Add TimeValue.Win32FILETIME, corresponding to r186374.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186375 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/TimeValueTest.cpp b/unittests/Support/TimeValueTest.cpp
index 0fd5675..fb2abe3 100644
--- a/unittests/Support/TimeValueTest.cpp
+++ b/unittests/Support/TimeValueTest.cpp
@@ -20,4 +20,20 @@
EXPECT_TRUE(abs(static_cast<long>(now_t - now.toEpochTime())) < 2);
}
+TEST(TimeValue, Win32FILETIME) {
+ uint64_t epoch_as_filetime = 0x19DB1DED53E8000ULL;
+ uint32_t ns = 765432100;
+ sys::TimeValue epoch;
+
+ // FILETIME has 100ns of intervals.
+ uint64_t ft1970 = epoch_as_filetime + ns / 100;
+ epoch.fromWin32Time(ft1970);
+
+ // The "seconds" part in Posix time may be expected as zero.
+ EXPECT_EQ(ns / 100, epoch.toPosixTime());
+
+ // Confirm it reversible.
+ EXPECT_EQ(ft1970, epoch.toWin32Time());
+}
+
}