Merge pull request #686 from krekoten/class_initialize

Class#initialize on already initialized class

spec/tags/core/class/initialize_tags.txt

@@ -1,3 +1 @@
 fails:Class#initialize is private
-fails:Class#initialize raises a TypeError when called on already initialized classes
-fails:Class#initialize raises a TypeError when called on BasicObject

topaz/objects/classobject.py

@@ -110,6 +110,8 @@ def method_allocate(self, space, args_w):
 
     @classdef.method("initialize")
     def method_initialize(self, space, w_superclass=None, block=None):
+        if self.superclass is not None or self is space.w_basicobject:
+            raise space.error(space.w_TypeError, "already initialized class")
         if w_superclass is not None:
             if not isinstance(w_superclass, W_ClassObject):
                 raise space.error(space.w_TypeError,