added a simple test for wxGetDisplayXXX() functions

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55796 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/misc/guifuncs.cpp

@@ -0,0 +1,69 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        tests/misc/misctests.cpp
+// Purpose:     test miscellaneous GUI functions
+// Author:      Vadim Zeitlin
+// Created:     2008-09-22
+// RCS-ID:      $Id$
+// Copyright:   (c) 2008 Vadim Zeitlin
+///////////////////////////////////////////////////////////////////////////////
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "testprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#include "wx/defs.h"
+
+// ----------------------------------------------------------------------------
+// test class
+// ----------------------------------------------------------------------------
+
+class MiscGUIFuncsTestCase : public CppUnit::TestCase
+{
+public:
+    MiscGUIFuncsTestCase() { }
+
+private:
+    CPPUNIT_TEST_SUITE( MiscGUIFuncsTestCase );
+        CPPUNIT_TEST( DisplaySize );
+    CPPUNIT_TEST_SUITE_END();
+
+    void DisplaySize();
+
+    DECLARE_NO_COPY_CLASS(MiscGUIFuncsTestCase)
+};
+
+// register in the unnamed registry so that these tests are run by default
+CPPUNIT_TEST_SUITE_REGISTRATION( MiscGUIFuncsTestCase );
+
+// also include in it's own registry so that these tests can be run alone
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MiscGUIFuncsTestCase, "MiscGUIFuncsTestCase" );
+
+void MiscGUIFuncsTestCase::DisplaySize()
+{
+    // test that different (almost) overloads return the same results
+    int w, h;
+    wxDisplaySize(&w, &h);
+    wxSize sz = wxGetDisplaySize();
+
+    CPPUNIT_ASSERT_EQUAL( w, sz.x );
+    CPPUNIT_ASSERT_EQUAL( h, sz.y );
+
+    // test that passing NULL works as expected, e.g. doesn't crash
+    wxDisplaySize(NULL, NULL);
+    wxDisplaySize(&w, NULL);
+    wxDisplaySize(NULL, &h);
+
+    CPPUNIT_ASSERT_EQUAL( w, sz.x );
+    CPPUNIT_ASSERT_EQUAL( h, sz.y );
+
+    // test that display PPI is something reasonable
+    sz = wxGetDisplayPPI();
+    CPPUNIT_ASSERT( sz.x < 1000 && sz.y < 1000 );
+}
+