1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
# Check every path through every method of UserDict
from test import support, mapping_tests
import collections
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 = collections.UserDict
def test_all(self):
# Test constructors
u = collections.UserDict()
u0 = collections.UserDict(d0)
u1 = collections.UserDict(d1)
u2 = collections.UserDict(d2)
uu = collections.UserDict(u)
uu0 = collections.UserDict(u0)
uu1 = collections.UserDict(u1)
uu2 = collections.UserDict(u2)
# keyword arg constructor
self.assertEqual(collections.UserDict(one=1, two=2), d2)
# item sequence constructor
self.assertEqual(collections.UserDict([('one',1), ('two',2)]), d2)
with self.assertWarnsRegex(DeprecationWarning, "'dict'"):
self.assertEqual(collections.UserDict(dict=[('one',1), ('two',2)]), d2)
# both together
self.assertEqual(collections.UserDict([('one',1), ('two',2)], two=3, three=5), d3)
# alternate constructor
self.assertEqual(collections.UserDict.fromkeys('one two'.split()), d4)
self.assertEqual(collections.UserDict().fromkeys('one two'.split()), d4)
self.assertEqual(collections.UserDict.fromkeys('one two'.split(), 1), d5)
self.assertEqual(collections.UserDict().fromkeys('one two'.split(), 1), d5)
self.assertTrue(u1.fromkeys('one two'.split()) is not u1)
self.assertIsInstance(u1.fromkeys('one two'.split()), collections.UserDict)
self.assertIsInstance(u2.fromkeys('one two'.split()), collections.UserDict)
# Test __repr__
self.assertEqual(str(u0), str(d0))
self.assertEqual(repr(u1), repr(d1))
self.assertIn(repr(u2), ("{'one': 1, 'two': 2}",
"{'two': 2, 'one': 1}"))
# Test rich comparison and __len__
all = [d0, d1, d2, u, u0, u1, u2, uu, uu0, uu1, uu2]
for a in all:
for b in all:
self.assertEqual(a == b, len(a) == len(b))
# Test __getitem__
self.assertEqual(u2["one"], 1)
self.assertRaises(KeyError, u1.__getitem__, "two")
# Test __setitem__
u3 = collections.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 = collections.UserDict(x=42, y=23)
u2c = u2b.copy() # making a copy of a UserDict is special cased
self.assertEqual(u2b, u2c)
class MyUserDict(collections.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(sorted(u2.keys()), sorted(d2.keys()))
self.assertEqual(sorted(u2.items()), sorted(d2.items()))
self.assertEqual(sorted(u2.values()), sorted(d2.values()))
# Test "in".
for i in u2.keys():
self.assertIn(i, u2)
self.assertEqual(i in u1, i in d1)
self.assertEqual(i in u0, i in d0)
# Test update
t = collections.UserDict()
t.update(u2)
self.assertEqual(t, u2)
# 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 range(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 = collections.UserDict()
self.assertEqual(t.setdefault("x", 42), 42)
self.assertIn("x", t)
self.assertEqual(t.setdefault("x", 23), 42)
# Test pop
t = collections.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 = collections.UserDict(x=42)
self.assertEqual(t.popitem(), ("x", 42))
self.assertRaises(KeyError, t.popitem)
def test_init(self):
for kw in 'self', 'other', 'iterable':
self.assertEqual(list(collections.UserDict(**{kw: 42}).items()),
[(kw, 42)])
self.assertEqual(list(collections.UserDict({}, dict=42).items()),
[('dict', 42)])
self.assertEqual(list(collections.UserDict({}, dict=None).items()),
[('dict', None)])
with self.assertWarnsRegex(DeprecationWarning, "'dict'"):
self.assertEqual(list(collections.UserDict(dict={'a': 42}).items()),
[('a', 42)])
self.assertRaises(TypeError, collections.UserDict, 42)
self.assertRaises(TypeError, collections.UserDict, (), ())
self.assertRaises(TypeError, collections.UserDict.__init__)
def test_update(self):
for kw in 'self', 'dict', 'other', 'iterable':
d = collections.UserDict()
d.update(**{kw: 42})
self.assertEqual(list(d.items()), [(kw, 42)])
self.assertRaises(TypeError, collections.UserDict().update, 42)
self.assertRaises(TypeError, collections.UserDict().update, {}, {})
self.assertRaises(TypeError, collections.UserDict.update)
def test_missing(self):
# Make sure UserDict doesn't have a __missing__ method
self.assertEqual(hasattr(collections.UserDict, "__missing__"), False)
# Test several cases:
# (D) subclass defines __missing__ method returning a value
# (E) subclass defines __missing__ method raising RuntimeError
# (F) subclass sets __missing__ instance variable (no effect)
# (G) subclass doesn't define __missing__ at a all
class D(collections.UserDict):
def __missing__(self, key):
return 42
d = D({1: 2, 3: 4})
self.assertEqual(d[1], 2)
self.assertEqual(d[3], 4)
self.assertNotIn(2, d)
self.assertNotIn(2, d.keys())
self.assertEqual(d[2], 42)
class E(collections.UserDict):
def __missing__(self, key):
raise RuntimeError(key)
e = E()
try:
e[42]
except RuntimeError as err:
self.assertEqual(err.args, (42,))
else:
self.fail("e[42] didn't raise RuntimeError")
class F(collections.UserDict):
def __init__(self):
# An instance variable __missing__ should have no effect
self.__missing__ = lambda key: None
collections.UserDict.__init__(self)
f = F()
try:
f[42]
except KeyError as err:
self.assertEqual(err.args, (42,))
else:
self.fail("f[42] didn't raise KeyError")
class G(collections.UserDict):
pass
g = G()
try:
g[42]
except KeyError as err:
self.assertEqual(err.args, (42,))
else:
self.fail("g[42] didn't raise KeyError")
if __name__ == "__main__":
unittest.main()
|
