gecko-dev/xpcom/tests/TestTimeStamp.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is XPCOM TimeStamp tests.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* robert@ocallahan.org
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
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* ***** END LICENSE BLOCK ***** */
#include "mozilla/TimeStamp.h"
#include "TestHarness.h"
#include "prinrval.h"
#include "prthread.h"
using mozilla::TimeStamp;
using mozilla::TimeDuration;
static void Assert(PRBool 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;
}