add test case

tests/run/dict_values_in_expression.pyx

 
-def func(**kwargs):
+def values_in_expression(**kwargs):
     """
-    >>> sorted(func(a=3, b=4))
+    >>> sorted(values_in_expression(a=3, b=4))
     [1, 2, 3, 4]
     """
     return [ arg for arg in [1,2] + kwargs.values() ]
+
+
+cdef dict make_dict(d):
+    return dict(d)
+
+def values_of_expression(**kwargs):
+    """
+    >>> sorted(values_of_expression(a=3, b=4))
+    [3, 4]
+    """
+    return [ arg for arg in make_dict(kwargs).values() ]