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 namespace
  30 {
  31
  32 const long tolerance = 50;  // in ms
  33 const int sleepTime = 500;
  34
  35 } // anonymous namespace
  36
  37 // --------------------------------------------------------------------------
  38 // test class
  39 // --------------------------------------------------------------------------
  40
  41 class StopWatchTestCase : public CppUnit::TestCase
  42 {
  43 public:
  44     StopWatchTestCase() {}
  45
  46 private:
  47     CPPUNIT_TEST_SUITE( StopWatchTestCase );
  48         CPPUNIT_TEST( Misc );
  49         CPPUNIT_TEST( BackwardsClockBug );
  50         CPPUNIT_TEST( RestartBug );
  51     CPPUNIT_TEST_SUITE_END();
  52
  53     void Misc();
  54     void BackwardsClockBug();
  55     void RestartBug();
  56
  57     DECLARE_NO_COPY_CLASS(StopWatchTestCase)
  58 };
  59
  60 // register in the unnamed registry so that these tests are run by default
  61 CPPUNIT_TEST_SUITE_REGISTRATION( StopWatchTestCase );
  62
  63 // also include in its own registry so that these tests can be run alone
  64 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( StopWatchTestCase, "StopWatchTestCase" );
  65
  66 void StopWatchTestCase::Misc()
  67 {
  68     wxStopWatch sw;
  69     long t;
  70     wxLongLong usec;
  71
  72     sw.Pause();         // pause it immediately
  73
  74     // verify that almost no time elapsed
  75     usec = sw.TimeInMicro();
  76     WX_ASSERT_MESSAGE
  77     (
  78         ("Elapsed time was %" wxLongLongFmtSpec "dus", usec),
  79         usec < tolerance*1000
  80     );
  81
  82     wxSleep(1);
  83     t = sw.Time();
  84
  85     // check that the stop watch doesn't advance while paused
  86     WX_ASSERT_MESSAGE
  87     (
  88         ("Actual time value is %ld", t),
  89         t >= 0 && t < tolerance
  90     );
  91
  92     sw.Resume();
  93     wxMilliSleep(sleepTime);
  94     t = sw.Time();
  95     // check that it did advance now by ~1.5s
  96     WX_ASSERT_MESSAGE
  97     (
  98         ("Actual time value is %ld", t),
  99         t > sleepTime - tolerance && t < sleepTime + tolerance
 100     );
 101
 102     sw.Pause();
 103
 104     // check that this sleep won't be taken into account below
 105     wxMilliSleep(sleepTime);
 106     sw.Resume();
 107
 108     wxMilliSleep(sleepTime);
 109     t = sw.Time();
 110
 111     // and it should advance again
 112     WX_ASSERT_MESSAGE
 113     (
 114         ("Actual time value is %ld", t),
 115         t > 2*sleepTime - tolerance && t < 2*sleepTime + tolerance
 116     );
 117 }
 118
 119 void StopWatchTestCase::BackwardsClockBug()
 120 {
 121     wxStopWatch sw;
 122     wxStopWatch sw2;
 123
 124     for ( size_t n = 0; n < 10; n++ )
 125     {
 126         sw2.Start();
 127
 128         for ( size_t m = 0; m < 10000; m++ )
 129         {
 130             CPPUNIT_ASSERT ( sw.Time() >= 0 && sw2.Time() >= 0 );
 131         }
 132     }
 133 }
 134
 135 void StopWatchTestCase::RestartBug()
 136 {
 137     wxStopWatch sw;
 138     sw.Pause();
 139
 140     // Calling Start() should resume the stopwatch if it was paused.
 141     static const int offset = 5000;
 142     sw.Start(offset);
 143     wxMilliSleep(sleepTime);
 144
 145     long t = sw.Time();
 146     WX_ASSERT_MESSAGE
 147     (
 148         ("Actual time value is %ld", t),
 149         t > offset + sleepTime - tolerance &&
 150             t < offset + sleepTime + tolerance
 151     );
 152 }