tests/events/stopwatch.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/events/stopwatch.cpp
   3 // Purpose:     Test wxStopWatch class
   4 // Author:      Francesco Montorsi (extracted from console sample)
   5 // Created:     2010-05-16
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2010 wxWidgets team
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10
  11 // ----------------------------------------------------------------------------
  12 // headers
  13 // ----------------------------------------------------------------------------
  14
  15 #include "testprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #ifndef WX_PRECOMP
  22 #endif // WX_PRECOMP
  23
  24 #include <time.h>
  25
  26 #include "wx/stopwatch.h"
  27 #include "wx/utils.h"
  28
  29 // --------------------------------------------------------------------------
  30 // test class
  31 // --------------------------------------------------------------------------
  32
  33 class StopWatchTestCase : public CppUnit::TestCase
  34 {
  35 public:
  36     StopWatchTestCase() {}
  37
  38 private:
  39     CPPUNIT_TEST_SUITE( StopWatchTestCase );
  40         CPPUNIT_TEST( Misc );
  41         CPPUNIT_TEST( BackwardsClockBug );
  42     CPPUNIT_TEST_SUITE_END();
  43
  44     void Misc();
  45     void BackwardsClockBug();
  46
  47     DECLARE_NO_COPY_CLASS(StopWatchTestCase)
  48 };
  49
  50 // register in the unnamed registry so that these tests are run by default
  51 CPPUNIT_TEST_SUITE_REGISTRATION( StopWatchTestCase );
  52
  53 // also include in its own registry so that these tests can be run alone
  54 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( StopWatchTestCase, "StopWatchTestCase" );
  55
  56 void StopWatchTestCase::Misc()
  57 {
  58     static const long tolerance = 10;  // in ms
  59
  60     wxStopWatch sw;
  61     long t;
  62     wxLongLong usec;
  63
  64     sw.Pause();         // pause it immediately
  65
  66     // verify that almost no time elapsed
  67     usec = sw.TimeInMicro();
  68     WX_ASSERT_MESSAGE
  69     (
  70         ("Elapsed time was %" wxLongLongFmtSpec "dus", usec),
  71         usec < tolerance*1000
  72     );
  73
  74     wxSleep(1);
  75     t = sw.Time();
  76
  77     // check that the stop watch doesn't advance while paused
  78     WX_ASSERT_MESSAGE
  79     (
  80         ("Actual time value is %ld", t),
  81         t >= 0 && t < tolerance
  82     );
  83
  84     static const int sleepTime = 500;
  85     sw.Resume();
  86     wxMilliSleep(sleepTime);
  87     t = sw.Time();
  88     // check that it did advance now by ~1.5s
  89     WX_ASSERT_MESSAGE
  90     (
  91         ("Actual time value is %ld", t),
  92         t > sleepTime - tolerance && t < sleepTime + tolerance
  93     );
  94
  95     sw.Pause();
  96
  97     // check that this sleep won't be taken into account below
  98     wxMilliSleep(sleepTime);
  99     sw.Resume();
 100
 101     wxMilliSleep(sleepTime);
 102     t = sw.Time();
 103
 104     // and it should advance again
 105     WX_ASSERT_MESSAGE
 106     (
 107         ("Actual time value is %ld", t),
 108         t > 2*sleepTime - tolerance && t < 2*sleepTime + tolerance
 109     );
 110 }
 111
 112 void StopWatchTestCase::BackwardsClockBug()
 113 {
 114     wxStopWatch sw;
 115     wxStopWatch sw2;
 116
 117     for ( size_t n = 0; n < 10; n++ )
 118     {
 119         sw2.Start();
 120
 121         for ( size_t m = 0; m < 10000; m++ )
 122         {
 123             CPPUNIT_ASSERT ( sw.Time() >= 0 && sw2.Time() >= 0 );
 124         }
 125     }
 126 }