test: object-invoke: Test invocation of method taking a reference argument

Object::invokeMethod() fails with a compilation error when the invoked
method takes a reference argument. Add a test case for this issue.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

test/object-invoke.cpp

@@ -49,6 +49,10 @@ public:
 		value_ = value;
 	}
 
+	void methodWithReference(const int &value)
+	{
+	}
+
 private:
 	Status status_;
 	int value_;
@@ -119,6 +123,14 @@ protected:
 			return TestFail;
 		}
 
+		/*
+		 * Test invoking a method that takes reference arguments. This
+		 * targets compilation, there's no need to check runtime
+		 * results.
+		 */
+		object_.invokeMethod(&InvokedObject::methodWithReference,
+				     ConnectionTypeBlocking, 42);
+
 		return TestPass;
 	}