Improve correctness of SwigDerivedClassHasMethod() tests

Tests first added in issue swig#1323

Author: rokups

Examples/test-suite/csharp/director_basic_runme.cs

@@ -48,6 +48,8 @@ void run()
       if (myNewBar == null)
         throw new Exception("non-null pointer marshalling problem");
       myNewBar.x = 10;
+
+      my.testSwigDerivedClassHasMethod();
     }
   }
 }
@@ -69,6 +71,14 @@ public override Bar pmethod(Bar b) {
       throw new Exception("null not received as expected");
     return b;
   }
+
+  public bool nonVirtual() {
+    throw new Exception("non-virtual overrides virtual method");
+  }
+
+  public virtual bool nonOverride() {
+    throw new Exception("non-override overrides virtual method");
+  }
 }
 
 }

Examples/test-suite/director_basic.i

@@ -65,6 +65,14 @@
 
  %}
 
+ %typemap(cscode) MyClass %{
+   public void testSwigDerivedClassHasMethod() {
+     if (SwigDerivedClassHasMethod("nonVirtual", swigMethodTypes3))
+       throw new global::System.Exception("non-overriding non-virtual method would be when connecting director");
+     if (SwigDerivedClassHasMethod("nonOverride", swigMethodTypes4))
+       throw new global::System.Exception("non-overriding virtual method would be when connecting director");
+   }
+ %}
 
  %feature("director") MyClass;
 
@@ -122,8 +130,16 @@ public:
     return myclass->pmethod(b);
   }
 
-   // Collisions with generated method names
-   virtual void Connect() { }
+  virtual void nonVirtual()
+  {
+  }
+
+  virtual void nonOverride()
+  {
+  }
+
+  // Collisions with generated method names
+  virtual void Connect() { }
 };
 
 template<class T>