Add a trivial benchmark for wxDateTime::ParseDate().

Add a test to check the performance of this method.

See #13242.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67775 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/benchmarks/datetime.cpp

@@ -0,0 +1,20 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        tests/benchmarks/datetime.cpp
+// Purpose:     wxDateTime benchmarks
+// Author:      Vadim Zeitlin
+// Created:     2011-05-23
+// RCS-ID:      $Id$
+// Copyright:   (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "wx/datetime.h"
+
+#include "bench.h"
+
+BENCHMARK_FUNC(ParseDate)
+{
+    wxDateTime dt;
+    return dt.ParseDate("May 23, 2011") && dt.GetMonth() == wxDateTime::May;
+}
+