Test for consistent struct/class keywords.

Tests for cases where class name matches translation unit name.
Tests for cases where global constants/functions from different translation units would end up in the value type.

tests/CSharp/CSharp.cs

@@ -36,6 +36,7 @@ namespace CppSharp.Tests
             ctx.SetClassAsValueType("QPoint");
             ctx.SetClassAsValueType("QSize");
             ctx.SetClassAsValueType("QRect");
+            ctx.SetClassAsValueType("CSharp");
             ctx.SetClassAsValueType("StructTestArrayTypeFromTypedef");
             ctx.IgnoreClassWithName("IgnoredTypeInheritingNonIgnoredWithNoEmptyCtor");
             ctx.IgnoreClassWithName("Ignored");

tests/CSharp/CSharp.h

@@ -1266,3 +1266,9 @@ public:
     ~HasFixedArrayOfPointers();
     Foo* fixedArrayOfPointers[3];
 };
+
+struct DLL_API CSharp
+{
+};
+
+static int FOOBAR_CONSTANT = 42;