Update python/ql/test/library-tests/PointsTo/new/code/w_function_values.py

Co-authored-by: Rasmus Wriedt Larsen <rasmuswriedtlarsen@gmail.com>

python/ql/test/library-tests/PointsTo/new/code/w_function_values.py

@@ -18,15 +18,19 @@ f_false = test_conditoinal_function(False)
 f_true = test_conditoinal_function(True)
 
 
-def foo():
-    return "foo"
-
-
 def test_redefinition():
+    def foo():
+        return "foo"
+        
     f = foo
 
     def foo():
-        return "refined"
+        return "foo redefined"
 
-    sink = f()
-    return sink
+    sink_foo = f()
+    sink_redefined = foo()
+    return sink_foo, sink_redefined
+    
+foo, redefined = test_redefinition()
+assert foo == "foo"
+assert redefined == "foo redefined"