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-rw-r--r--xpcom/tests/gtest/TestTimeStamp.cpp70
1 files changed, 70 insertions, 0 deletions
diff --git a/xpcom/tests/gtest/TestTimeStamp.cpp b/xpcom/tests/gtest/TestTimeStamp.cpp
new file mode 100644
index 0000000000..acd8ff575c
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+++ b/xpcom/tests/gtest/TestTimeStamp.cpp
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/TimeStamp.h"
+
+#include "prinrval.h"
+#include "prthread.h"
+
+#include "gtest/gtest.h"
+
+using mozilla::TimeDuration;
+using mozilla::TimeStamp;
+
+TEST(TimeStamp, Main)
+{
+ TimeDuration td;
+ EXPECT_TRUE(td.ToSeconds() == 0.0);
+ EXPECT_TRUE(TimeDuration::FromSeconds(5).ToSeconds() == 5.0);
+ EXPECT_TRUE(TimeDuration::FromMilliseconds(5000).ToSeconds() == 5.0);
+ EXPECT_TRUE(TimeDuration::FromSeconds(1) < TimeDuration::FromSeconds(2));
+ EXPECT_FALSE(TimeDuration::FromSeconds(1) < TimeDuration::FromSeconds(1));
+ EXPECT_TRUE(TimeDuration::FromSeconds(2) > TimeDuration::FromSeconds(1));
+ EXPECT_FALSE(TimeDuration::FromSeconds(1) > TimeDuration::FromSeconds(1));
+ EXPECT_TRUE(TimeDuration::FromSeconds(1) <= TimeDuration::FromSeconds(2));
+ EXPECT_TRUE(TimeDuration::FromSeconds(1) <= TimeDuration::FromSeconds(1));
+ EXPECT_FALSE(TimeDuration::FromSeconds(2) <= TimeDuration::FromSeconds(1));
+ EXPECT_TRUE(TimeDuration::FromSeconds(2) >= TimeDuration::FromSeconds(1));
+ EXPECT_TRUE(TimeDuration::FromSeconds(1) >= TimeDuration::FromSeconds(1));
+ EXPECT_FALSE(TimeDuration::FromSeconds(1) >= TimeDuration::FromSeconds(2));
+
+ TimeStamp ts;
+ EXPECT_TRUE(ts.IsNull());
+
+ ts = TimeStamp::Now();
+ EXPECT_TRUE(!ts.IsNull());
+ EXPECT_TRUE((ts - ts).ToSeconds() == 0.0);
+
+ PR_Sleep(PR_SecondsToInterval(2));
+
+ TimeStamp ts2(TimeStamp::Now());
+ EXPECT_TRUE(ts2 > ts);
+ EXPECT_FALSE(ts > ts);
+ EXPECT_TRUE(ts < ts2);
+ EXPECT_FALSE(ts < ts);
+ EXPECT_TRUE(ts <= ts2);
+ EXPECT_TRUE(ts <= ts);
+ EXPECT_FALSE(ts2 <= ts);
+ EXPECT_TRUE(ts2 >= ts);
+ EXPECT_TRUE(ts2 >= ts);
+ EXPECT_FALSE(ts >= ts2);
+
+ // We can't be sure exactly how long PR_Sleep slept for. It should have
+ // slept for at least one second. We might have slept a lot longer due
+ // to process scheduling, but hopefully not more than 10 seconds.
+ td = ts2 - ts;
+ EXPECT_TRUE(td.ToSeconds() > 1.0);
+ EXPECT_TRUE(td.ToSeconds() < 20.0);
+ td = ts - ts2;
+ EXPECT_TRUE(td.ToSeconds() < -1.0);
+ EXPECT_TRUE(td.ToSeconds() > -20.0);
+
+ double resolution = TimeDuration::Resolution().ToSecondsSigDigits();
+ printf(" (platform timer resolution is ~%g s)\n", resolution);
+ EXPECT_TRUE(1e-10 < resolution);
+ // Don't upper-bound sanity check ... although NSPR reports 1ms
+ // resolution, it might be lying, so we shouldn't compare with it
+}