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//usr/lib/python2.4/test/test_userdict.py
# Check every path through every method of UserDict import unittest from test import test_support, mapping_tests import UserDict d0 = {} d1 = {"one": 1} d2 = {"one": 1, "two": 2} d3 = {"one": 1, "two": 3, "three": 5} d4 = {"one": None, "two": None} d5 = {"one": 1, "two": 1} class UserDictTest(mapping_tests.TestHashMappingProtocol): type2test = UserDict.IterableUserDict def test_all(self): # Test constructors u = UserDict.UserDict() u0 = UserDict.UserDict(d0) u1 = UserDict.UserDict(d1) u2 = UserDict.IterableUserDict(d2) uu = UserDict.UserDict(u) uu0 = UserDict.UserDict(u0) uu1 = UserDict.UserDict(u1) uu2 = UserDict.UserDict(u2) # keyword arg constructor self.assertEqual(UserDict.UserDict(one=1, two=2), d2) # item sequence constructor self.assertEqual(UserDict.UserDict([('one',1), ('two',2)]), d2) self.assertEqual(UserDict.UserDict(dict=[('one',1), ('two',2)]), d2) # both together self.assertEqual(UserDict.UserDict([('one',1), ('two',2)], two=3, three=5), d3) # alternate constructor self.assertEqual(UserDict.UserDict.fromkeys('one two'.split()), d4) self.assertEqual(UserDict.UserDict().fromkeys('one two'.split()), d4) self.assertEqual(UserDict.UserDict.fromkeys('one two'.split(), 1), d5) self.assertEqual(UserDict.UserDict().fromkeys('one two'.split(), 1), d5) self.assert_(u1.fromkeys('one two'.split()) is not u1) self.assert_(isinstance(u1.fromkeys('one two'.split()), UserDict.UserDict)) self.assert_(isinstance(u2.fromkeys('one two'.split()), UserDict.IterableUserDict)) # Test __repr__ self.assertEqual(str(u0), str(d0)) self.assertEqual(repr(u1), repr(d1)) self.assertEqual(`u2`, `d2`) # Test __cmp__ and __len__ all = [d0, d1, d2, u, u0, u1, u2, uu, uu0, uu1, uu2] for a in all: for b in all: self.assertEqual(cmp(a, b), cmp(len(a), len(b))) # Test __getitem__ self.assertEqual(u2["one"], 1) self.assertRaises(KeyError, u1.__getitem__, "two") # Test __setitem__ u3 = UserDict.UserDict(u2) u3["two"] = 2 u3["three"] = 3 # Test __delitem__ del u3["three"] self.assertRaises(KeyError, u3.__delitem__, "three") # Test clear u3.clear() self.assertEqual(u3, {}) # Test copy() u2a = u2.copy() self.assertEqual(u2a, u2) u2b = UserDict.UserDict(x=42, y=23) u2c = u2b.copy() # making a copy of a UserDict is special cased self.assertEqual(u2b, u2c) class MyUserDict(UserDict.UserDict): def display(self): print self m2 = MyUserDict(u2) m2a = m2.copy() self.assertEqual(m2a, m2) # SF bug #476616 -- copy() of UserDict subclass shared data m2['foo'] = 'bar' self.assertNotEqual(m2a, m2) # Test keys, items, values self.assertEqual(u2.keys(), d2.keys()) self.assertEqual(u2.items(), d2.items()) self.assertEqual(u2.values(), d2.values()) # Test has_key and "in". for i in u2.keys(): self.assert_(u2.has_key(i)) self.assert_(i in u2) self.assertEqual(u1.has_key(i), d1.has_key(i)) self.assertEqual(i in u1, i in d1) self.assertEqual(u0.has_key(i), d0.has_key(i)) self.assertEqual(i in u0, i in d0) # Test update t = UserDict.UserDict() t.update(u2) self.assertEqual(t, u2) class Items: def items(self): return (("x", 42), ("y", 23)) t = UserDict.UserDict() t.update(Items()) self.assertEqual(t, {"x": 42, "y": 23}) # Test get for i in u2.keys(): self.assertEqual(u2.get(i), u2[i]) self.assertEqual(u1.get(i), d1.get(i)) self.assertEqual(u0.get(i), d0.get(i)) # Test "in" iteration. for i in xrange(20): u2[i] = str(i) ikeys = [] for k in u2: ikeys.append(k) keys = u2.keys() self.assertEqual(set(ikeys), set(keys)) # Test setdefault t = UserDict.UserDict() self.assertEqual(t.setdefault("x", 42), 42) self.assert_(t.has_key("x")) self.assertEqual(t.setdefault("x", 23), 42) # Test pop t = UserDict.UserDict(x=42) self.assertEqual(t.pop("x"), 42) self.assertRaises(KeyError, t.pop, "x") self.assertEqual(t.pop("x", 1), 1) t["x"] = 42 self.assertEqual(t.pop("x", 1), 42) # Test popitem t = UserDict.UserDict(x=42) self.assertEqual(t.popitem(), ("x", 42)) self.assertRaises(KeyError, t.popitem) ########################## # Test Dict Mixin class SeqDict(UserDict.DictMixin): """Dictionary lookalike implemented with lists. Used to test and demonstrate DictMixin """ def __init__(self, other=None, **kwargs): self.keylist = [] self.valuelist = [] if other is not None: for (key, value) in other: self[key] = value for (key, value) in kwargs.iteritems(): self[key] = value def __getitem__(self, key): try: i = self.keylist.index(key) except ValueError: raise KeyError return self.valuelist[i] def __setitem__(self, key, value): try: i = self.keylist.index(key) self.valuelist[i] = value except ValueError: 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) def copy(self): d = self.__class__() for key, value in self.iteritems(): d[key] = value return d def fromkeys(cls, keys, value=None): d = cls() for key in keys: d[key] = value return d fromkeys = classmethod(fromkeys) class UserDictMixinTest(mapping_tests.TestMappingProtocol): type2test = SeqDict def test_all(self): ## Setup test and verify working of the test class # check init s = SeqDict() # exercise setitem s[10] = 'ten' s[20] = 'twenty' s[30] = 'thirty' # exercise delitem del s[20] # check getitem and setitem self.assertEqual(s[10], 'ten') # check keys() and delitem self.assertEqual(s.keys(), [10, 30]) ## Now, test the DictMixin methods one by one # has_key self.assert_(s.has_key(10)) self.assert_(not s.has_key(20)) # __contains__ self.assert_(10 in s) self.assert_(20 not in s) # __iter__ self.assertEqual([k for k in s], [10, 30]) # __len__ self.assertEqual(len(s), 2) # iteritems self.assertEqual(list(s.iteritems()), [(10,'ten'), (30, 'thirty')]) # iterkeys self.assertEqual(list(s.iterkeys()), [10, 30]) # itervalues self.assertEqual(list(s.itervalues()), ['ten', 'thirty']) # values self.assertEqual(s.values(), ['ten', 'thirty']) # items self.assertEqual(s.items(), [(10,'ten'), (30, 'thirty')]) # get self.assertEqual(s.get(10), 'ten') self.assertEqual(s.get(15,'fifteen'), 'fifteen') self.assertEqual(s.get(15), None) # setdefault self.assertEqual(s.setdefault(40, 'forty'), 'forty') self.assertEqual(s.setdefault(10, 'null'), 'ten') del s[40] # pop self.assertEqual(s.pop(10), 'ten') self.assert_(10 not in s) s[10] = 'ten' self.assertEqual(s.pop("x", 1), 1) s["x"] = 42 self.assertEqual(s.pop("x", 1), 42) # popitem k, v = s.popitem() self.assert_(k not in s) s[k] = v # clear s.clear() self.assertEqual(len(s), 0) # empty popitem self.assertRaises(KeyError, s.popitem) # update s.update({10: 'ten', 20:'twenty'}) self.assertEqual(s[10], 'ten') self.assertEqual(s[20], 'twenty') # cmp self.assertEqual(s, {10: 'ten', 20:'twenty'}) t = SeqDict() t[20] = 'twenty' t[10] = 'ten' self.assertEqual(s, t) def test_main(): test_support.run_unittest( UserDictTest, UserDictMixinTest ) if __name__ == "__main__": test_main()