gecko-dev/xpcom/tests/TestTimeStamp.cpp
2012-05-21 12:12:37 +01:00

97 lines
3.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "TestHarness.h"
#include "prinrval.h"
#include "prthread.h"
using mozilla::TimeStamp;
using mozilla::TimeDuration;
static void Assert(bool aCond, const char* aMsg)
{
if (aCond) {
passed(aMsg);
} else {
fail("%s", aMsg);
}
}
int main(int argc, char** argv)
{
ScopedXPCOM xpcom("nsTimeStamp");
if (xpcom.failed())
return 1;
TimeDuration td;
Assert(td.ToSeconds() == 0.0, "TimeDuration default value 0");
Assert(TimeDuration::FromSeconds(5).ToSeconds() == 5.0,
"TimeDuration FromSeconds/ToSeconds round-trip");
Assert(TimeDuration::FromMilliseconds(5000).ToSeconds() == 5.0,
"TimeDuration FromMilliseconds/ToSeconds round-trip");
Assert(TimeDuration::FromSeconds(1) < TimeDuration::FromSeconds(2),
"TimeDuration < operator works");
Assert(!(TimeDuration::FromSeconds(1) < TimeDuration::FromSeconds(1)),
"TimeDuration < operator works");
Assert(TimeDuration::FromSeconds(2) > TimeDuration::FromSeconds(1),
"TimeDuration > operator works");
Assert(!(TimeDuration::FromSeconds(1) > TimeDuration::FromSeconds(1)),
"TimeDuration > operator works");
Assert(TimeDuration::FromSeconds(1) <= TimeDuration::FromSeconds(2),
"TimeDuration <= operator works");
Assert(TimeDuration::FromSeconds(1) <= TimeDuration::FromSeconds(1),
"TimeDuration <= operator works");
Assert(!(TimeDuration::FromSeconds(2) <= TimeDuration::FromSeconds(1)),
"TimeDuration <= operator works");
Assert(TimeDuration::FromSeconds(2) >= TimeDuration::FromSeconds(1),
"TimeDuration >= operator works");
Assert(TimeDuration::FromSeconds(1) >= TimeDuration::FromSeconds(1),
"TimeDuration >= operator works");
Assert(!(TimeDuration::FromSeconds(1) >= TimeDuration::FromSeconds(2)),
"TimeDuration >= operator works");
TimeStamp ts;
Assert(ts.IsNull(), "Default TimeStamp value null");
ts = TimeStamp::Now();
Assert(!ts.IsNull(), "TimeStamp time value non-null");
Assert((ts - ts).ToSeconds() == 0.0, "TimeStamp zero-length duration");
PR_Sleep(PR_SecondsToInterval(2));
TimeStamp ts2(TimeStamp::Now());
Assert(ts2 > ts, "TimeStamp > comparison");
Assert(!(ts > ts), "TimeStamp > comparison");
Assert(ts < ts2, "TimeStamp < comparison");
Assert(!(ts < ts), "TimeStamp < comparison");
Assert(ts <= ts2, "TimeStamp <= comparison");
Assert(ts <= ts, "TimeStamp <= comparison");
Assert(!(ts2 <= ts), "TimeStamp <= comparison");
Assert(ts2 >= ts, "TimeStamp >= comparison");
Assert(ts2 >= ts, "TimeStamp >= comparison");
Assert(!(ts >= ts2), "TimeStamp >= comparison");
// 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;
Assert(td.ToSeconds() > 1.0, "TimeStamp difference lower bound");
Assert(td.ToSeconds() < 20.0, "TimeStamp difference upper bound");
td = ts - ts2;
Assert(td.ToSeconds() < -1.0, "TimeStamp negative difference lower bound");
Assert(td.ToSeconds() > -20.0, "TimeStamp negative difference upper bound");
double resolution = TimeDuration::Resolution().ToSecondsSigDigits();
printf(" (platform timer resolution is ~%g s)\n", resolution);
Assert(0.000000001 < resolution, "Time resolution is sane");
// Don't upper-bound sanity check ... although NSPR reports 1ms
// resolution, it might be lying, so we shouldn't compare with it
return gFailCount > 0;
}