[Python-checkins] python/dist/src/Lib/test test_userdict.py,1.6,1.7

2002年11月15日 00:39:42 -0800

Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv2802
Modified Files:
	test_userdict.py 
Log Message:
SF patch #520382: Expand shelve.py to have a full dictionary interface
and add a mixin to UserDict.py to make it easier to implement a full
dictionary interface.
Index: test_userdict.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_userdict.py,v
retrieving revision 1.6
retrieving revision 1.7
diff -C2 -d -r1.6 -r1.7
*** test_userdict.py	23 Jul 2002 19:04:09 -0000	1.6
--- test_userdict.py	15 Nov 2002 08:39:40 -0000	1.7
***************
*** 119,120 ****
--- 119,218 ----
 keys.sort()
 verify(ikeys == keys)
+ 
+ ##########################
+ # Test Dict Mixin
+ 
+ from UserDict import DictMixin
+ 
+ class SeqDict(DictMixin):
+ """Dictionary lookalike implemented with lists.
+ 
+ Used to test and demonstrate DictMixin
+ """
+ def __init__(self):
+ self.keylist = []
+ self.valuelist = []
+ def __getitem__(self, key):
+ try:
+ i = self.keylist.index(key)
+ except ValueError:
+ raise KeyError
+ return self.valuelist[i]
+ def __setitem__(self, key, value):
+ self.keylist.append(key)
+ self.valuelist.append(value)
+ def __delitem__(self, key):
+ try:
+ i = self.keylist.index(key)
+ except ValueError:
+ raise KeyError
+ self.keylist.pop(i)
+ self.valuelist.pop(i)
+ def keys(self):
+ return list(self.keylist)
+ 
+ ## Setup test and verify working of the test class
+ s = SeqDict() # check init
+ s[10] = 'ten' # exercise setitem
+ s[20] = 'twenty'
+ s[30] = 'thirty'
+ del s[20] # exercise delitem
+ verify(s[10] == 'ten') # check getitem and setitem
+ verify(s.keys() == [10, 30]) # check keys() and delitem
+ 
+ ## Now, test the DictMixin methods one by one
+ verify(s.has_key(10)) # has_key
+ verify(not s.has_key(20))
+ 
+ verify(10 in s) # __contains__
+ verify(20 not in s)
+ 
+ verify([k for k in s] == [10, 30]) # __iter__
+ 
+ verify(len(s) == 2) # __len__
+ 
+ verify(list(s.iteritems()) == [(10,'ten'), (30, 'thirty')]) # iteritems
+ 
+ verify(list(s.iterkeys()) == [10, 30]) # iterkeys
+ 
+ verify(list(s.itervalues()) == ['ten', 'thirty']) # itervalues
+ 
+ verify(s.values() == ['ten', 'thirty']) # values
+ 
+ verify(s.items() == [(10,'ten'), (30, 'thirty')]) # items
+ 
+ verify(s.get(10) == 'ten') # get
+ verify(s.get(15,'fifteen') == 'fifteen')
+ verify(s.get(15) == None)
+ 
+ verify(s.setdefault(40, 'forty') == 'forty') # setdefault
+ verify(s.setdefault(10, 'null') == 'ten')
+ del s[40]
+ 
+ verify(s.pop(10) == 'ten') # pop
+ verify(10 not in s)
+ s[10] = 'ten'
+ 
+ k, v = s.popitem() # popitem
+ verify(k not in s)
+ s[k] = v
+ 
+ s.clear() # clear
+ verify(len(s) == 0)
+ 
+ try: # empty popitem
+ s.popitem()
+ except KeyError:
+ pass
+ else:
+ verify(0, "popitem from an empty list should raise KeyError")
+ 
+ s.update({10: 'ten', 20:'twenty'}) # update
+ verify(s[10]=='ten' and s[20]=='twenty')
+ 
+ 
+ 
+ 
+ 
+ 
+