Add missing file in 79b9af3

Common/UnitTest.h

@@ -0,0 +1,26 @@
+/*
+  Copyright (C) 2013 Rainmeter Team
+
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License
+  as published by the Free Software Foundation; either version 2
+  of the License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+*/
+
+#include <CppUnitTest.h>
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+// VS IntelliSense doesn't seem to work well with the CppUnitTest.h TEST_CLASS macro. This is a 
+// simpler version, which seems to work fine.
+#undef TEST_CLASS
+#define TEST_CLASS(className) class className : public TestClass<className>