From: NAKAMURA Takumi <geek4civic@gmail.com>
Date: Tue, 16 Jul 2013 02:44:23 +0000 (+0000)
Subject: unittests/Support: Add TimeValue.Win32FILETIME, corresponding to r186374.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=334f8b9b37aef9e650af2007f9f3f7169f284425;p=oota-llvm.git

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 0fd56750151..fb2abe38293 100644
--- a/unittests/Support/TimeValueTest.cpp
+++ b/unittests/Support/TimeValueTest.cpp
@@ -20,4 +20,20 @@ TEST(TimeValue, time_t) {
   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());
+}
+
 }