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 = 100;  // in ms
  59
  60     wxStopWatch sw;
  61     long t;
  62
  63     sw.Pause();         // pause it immediately
  64
  65     wxSleep(1);
  66     t = sw.Time();
  67
  68     // check that the stop watch doesn't advance while paused
  69     WX_ASSERT_MESSAGE
  70     (
  71         ("Actual time value is %ld", t),
  72         t >= 0 && t < tolerance
  73     );
  74
  75     static const int sleepTime = 500;
  76     sw.Resume();
  77     wxMilliSleep(sleepTime);
  78     t = sw.Time();
  79     // check that it did advance now by ~1.5s
  80     WX_ASSERT_MESSAGE
  81     (
  82         ("Actual time value is %ld", t),
  83         t > sleepTime - tolerance && t < sleepTime + tolerance
  84     );
  85
  86     sw.Pause();
  87
  88     // check that this sleep won't be taken into account below
  89     wxMilliSleep(sleepTime);
  90     sw.Resume();
  91
  92     wxMilliSleep(sleepTime);
  93     t = sw.Time();
  94
  95     // and it should advance again
  96     WX_ASSERT_MESSAGE
  97     (
  98         ("Actual time value is %ld", t),
  99         t > 2*sleepTime - tolerance && t < 2*sleepTime + tolerance
 100     );
 101 }
 102
 103 void StopWatchTestCase::BackwardsClockBug()
 104 {
 105     wxStopWatch sw;
 106     wxStopWatch sw2;
 107
 108     for ( size_t n = 0; n < 10; n++ )
 109     {
 110         sw2.Start();
 111
 112         for ( size_t m = 0; m < 10000; m++ )
 113         {
 114             CPPUNIT_ASSERT ( sw.Time() >= 0 && sw2.Time() >= 0 );
 115         }
 116     }
 117 }