don't sleep too long to avoid missing the timers; added a simple test for timer event...

[wxWidgets.git] / tests / events / timertest.cpp

diff --git a/tests/events/timertest.cpp b/tests/events/timertest.cpp
new file mode 100644 (file)
index 0000000..1aed5c4
--- /dev/null
+++ b/tests/events/timertest.cpp
@@ -0,0 +1,139 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        tests/events/timertest.cpp
+// Purpose:     Test wxTimer events
+// Author:      Vadim Zeitlin
+// Created:     2008-10-22
+// RCS-ID:      $Id$
+// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+#endif // WX_PRECOMP
+
+#include <time.h>
+
+#include "wx/evtloop.h"
+#include "wx/timer.h"
+
+// helper class counting the number of timer events
+class TimerCounterHandler : public wxEvtHandler
+{
+public:
+    TimerCounterHandler()
+    {
+        m_events = 0;
+
+        Connect(wxEVT_TIMER, wxTimerEventHandler(TimerCounterHandler::OnTimer));
+    }
+
+    int GetNumEvents() const { return m_events; }
+
+private:
+    void OnTimer(wxTimerEvent& WXUNUSED(event))
+    {
+        m_events++;
+
+        Tick();
+    }
+
+    virtual void Tick() { /* nothing to do in the base class */ }
+
+    int m_events;
+
+    DECLARE_NO_COPY_CLASS(TimerCounterHandler)
+};
+
+// --------------------------------------------------------------------------
+// test class
+// --------------------------------------------------------------------------
+
+class TimerEventTestCase : public CppUnit::TestCase
+{
+public:
+    TimerEventTestCase() {}
+
+private:
+    CPPUNIT_TEST_SUITE( TimerEventTestCase );
+        CPPUNIT_TEST( OneShot );
+        CPPUNIT_TEST( Multiple );
+    CPPUNIT_TEST_SUITE_END();
+
+    void OneShot();
+    void Multiple();
+
+    DECLARE_NO_COPY_CLASS(TimerEventTestCase)
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( TimerEventTestCase );
+
+// also include in it's own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( TimerEventTestCase, "TimerEventTestCase" );
+
+void TimerEventTestCase::OneShot()
+{
+    class ExitOnTimerHandler : public TimerCounterHandler
+    {
+    public:
+        ExitOnTimerHandler(wxEventLoopBase& loop)
+            : TimerCounterHandler(),
+              m_loop(loop)
+        {
+        }
+
+    private:
+        virtual void Tick() { m_loop.Exit(); }
+
+        wxEventLoopBase& m_loop;
+
+        // don't use DECLARE_NO_COPY_CLASS() to avoid upsetting MSVC
+    };
+
+    wxEventLoop loop;
+
+    ExitOnTimerHandler handler(loop);
+    wxTimer timer(&handler);
+    timer.Start(200, true);
+
+    loop.Run();
+
+    CPPUNIT_ASSERT_EQUAL( 1, handler.GetNumEvents() );
+}
+
+void TimerEventTestCase::Multiple()
+{
+    wxEventLoop loop;
+
+    TimerCounterHandler handler;
+    wxTimer timer(&handler);
+    timer.Start(100);
+
+    // run the loop for 2 seconds
+    time_t t;
+    time(&t);
+    const time_t tEnd = t + 2;
+    while ( time(&t) < tEnd )
+    {
+        loop.Dispatch();
+    }
+
+    // we can't count on getting exactly 20 ticks but we shouldn't get more
+    // than this
+    const int numTicks = handler.GetNumEvents();
+    CPPUNIT_ASSERT( numTicks <= 20 );
+
+    // and we should get a decent number of them (unless the system is horribly
+    // loaded so if it does happen that this test fails we may need to remove
+    // it)
+    CPPUNIT_ASSERT( numTicks > 10 );
+}