Update of /cvsroot/python/python/dist/src/Lib/test In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv4899/Lib/test Modified Files: Tag: release24-maint test_weakref.py Log Message: backport doctest for weakref examples Index: test_weakref.py =================================================================== RCS file: /cvsroot/python/python/dist/src/Lib/test/test_weakref.py,v retrieving revision 1.42.4.1 retrieving revision 1.42.4.2 diff -u -d -r1.42.4.1 -r1.42.4.2 --- test_weakref.py 31 Mar 2005 04:07:47 -0000 1.42.4.1 +++ test_weakref.py 2 Jul 2005 19:09:42 -0000 1.42.4.2 @@ -1001,6 +1001,91 @@ def _reference(self): return self.__ref.copy() +libreftest = """ Doctest for examples in the library reference: libweakref.tex + +>>> import weakref +>>> class Dict(dict): +... pass +... +>>> obj = Dict(red=1, green=2, blue=3) # this object is weak referencable +>>> r = weakref.ref(obj) +>>> print r() +{'blue': 3, 'green': 2, 'red': 1} + +>>> import weakref +>>> class Object: +... pass +... +>>> o = Object() +>>> r = weakref.ref(o) +>>> o2 = r() +>>> o is o2 +True +>>> del o, o2 +>>> print r() +None + +>>> import weakref +>>> class ExtendedRef(weakref.ref): +... def __init__(self, ob, callback=None, **annotations): +... super(ExtendedRef, self).__init__(ob, callback) +... self.__counter = 0 +... for k, v in annotations.iteritems(): +... setattr(self, k, v) +... def __call__(self): +... '''Return a pair containing the referent and the number of +... times the reference has been called. +... ''' +... ob = super(ExtendedRef, self).__call__() +... if ob is not None: +... self.__counter += 1 +... ob = (ob, self.__counter) +... return ob +... +>>> class A: # not in docs from here, just testing the ExtendedRef +... pass +... +>>> a = A() +>>> r = ExtendedRef(a, foo=1, bar="baz") +>>> r.foo +1 +>>> r.bar +'baz' +>>> r()[1] +1 +>>> r()[1] +2 +>>> r()[0] is a +True + + +>>> import weakref +>>> _id2obj_dict = weakref.WeakValueDictionary() +>>> def remember(obj): +... oid = id(obj) +... _id2obj_dict[oid] = obj +... return oid +... +>>> def id2obj(oid): +... return _id2obj_dict[oid] +... +>>> a = A() # from here, just testing +>>> a_id = remember(a) +>>> id2obj(a_id) is a +True +>>> del a +>>> try: +... id2obj(a_id) +... except KeyError: +... print 'OK' +... else: +... print 'WeakValueDictionary error' +OK + +""" + +__test__ = {'libreftest' : libreftest} + def test_main(): test_support.run_unittest( ReferencesTestCase, @@ -1008,6 +1093,7 @@ WeakValueDictionaryTestCase, WeakKeyDictionaryTestCase, ) + test_support.run_doctest(sys.modules[__name__]) if __name__ == "__main__":