Implement nothing to find test

test/test_inputHandling.c

@@ -78,4 +78,11 @@ void test_inputHandling_findExpFunctionType(void)
     TEST_ASSERT_TRUE(opExp == type);
 }
 
+void test_inputHandling_findEmptyFunctionType(void)
+{
+    op type = opNotSupported;
+    type = detectFunctionOperator(halloWelt, 10);
+    TEST_ASSERT_TRUE(opEmpty == type);
+}
+
 #endif // TEST