add yet another overload of assertEquals to fix another compilation error due to using different types inside CPPUNIT_ASSERT_EQUAL

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56643 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/cppunit.h

@@ -137,6 +137,16 @@ assertEquals(int expected,
     assertEquals((unsigned short)expected, actual, sourceLine, message);
 }
 
+// this one is useful for wxTextCtrl functions which return longs
+inline void
+assertEquals(int expected,
+             long actual,
+             CppUnit::SourceLine sourceLine,
+             const std::string& message)
+{
+    assertEquals((long)expected, actual, sourceLine, message);
+}
+
 CPPUNIT_NS_END
 
 // Use this macro to compare a wxArrayString with the pipe-separated elements