1 # Check every path through every method of UserDict
2
3 from test import mapping_tests
4 import unittest
5 import collections
6
7 d0 = {}
8 d1 = {"one": 1}
9 d2 = {"one": 1, "two": 2}
10 d3 = {"one": 1, "two": 3, "three": 5}
11 d4 = {"one": None, "two": None}
12 d5 = {"one": 1, "two": 1}
13
14 class ESC[4;38;5;81mUserDictTest(ESC[4;38;5;149mmapping_testsESC[4;38;5;149m.ESC[4;38;5;149mTestHashMappingProtocol):
15 type2test = collections.UserDict
16
17 def test_all(self):
18 # Test constructors
19 u = collections.UserDict()
20 u0 = collections.UserDict(d0)
21 u1 = collections.UserDict(d1)
22 u2 = collections.UserDict(d2)
23
24 uu = collections.UserDict(u)
25 uu0 = collections.UserDict(u0)
26 uu1 = collections.UserDict(u1)
27 uu2 = collections.UserDict(u2)
28
29 # keyword arg constructor
30 self.assertEqual(collections.UserDict(one=1, two=2), d2)
31 # item sequence constructor
32 self.assertEqual(collections.UserDict([('one',1), ('two',2)]), d2)
33 self.assertEqual(collections.UserDict(dict=[('one',1), ('two',2)]),
34 {'dict': [('one', 1), ('two', 2)]})
35 # both together
36 self.assertEqual(collections.UserDict([('one',1), ('two',2)], two=3, three=5), d3)
37
38 # alternate constructor
39 self.assertEqual(collections.UserDict.fromkeys('one two'.split()), d4)
40 self.assertEqual(collections.UserDict().fromkeys('one two'.split()), d4)
41 self.assertEqual(collections.UserDict.fromkeys('one two'.split(), 1), d5)
42 self.assertEqual(collections.UserDict().fromkeys('one two'.split(), 1), d5)
43 self.assertTrue(u1.fromkeys('one two'.split()) is not u1)
44 self.assertIsInstance(u1.fromkeys('one two'.split()), collections.UserDict)
45 self.assertIsInstance(u2.fromkeys('one two'.split()), collections.UserDict)
46
47 # Test __repr__
48 self.assertEqual(str(u0), str(d0))
49 self.assertEqual(repr(u1), repr(d1))
50 self.assertIn(repr(u2), ("{'one': 1, 'two': 2}",
51 "{'two': 2, 'one': 1}"))
52
53 # Test rich comparison and __len__
54 all = [d0, d1, d2, u, u0, u1, u2, uu, uu0, uu1, uu2]
55 for a in all:
56 for b in all:
57 self.assertEqual(a == b, len(a) == len(b))
58
59 # Test __getitem__
60 self.assertEqual(u2["one"], 1)
61 self.assertRaises(KeyError, u1.__getitem__, "two")
62
63 # Test __setitem__
64 u3 = collections.UserDict(u2)
65 u3["two"] = 2
66 u3["three"] = 3
67
68 # Test __delitem__
69 del u3["three"]
70 self.assertRaises(KeyError, u3.__delitem__, "three")
71
72 # Test clear
73 u3.clear()
74 self.assertEqual(u3, {})
75
76 # Test copy()
77 u2a = u2.copy()
78 self.assertEqual(u2a, u2)
79 u2b = collections.UserDict(x=42, y=23)
80 u2c = u2b.copy() # making a copy of a UserDict is special cased
81 self.assertEqual(u2b, u2c)
82
83 class ESC[4;38;5;81mMyUserDict(ESC[4;38;5;149mcollectionsESC[4;38;5;149m.ESC[4;38;5;149mUserDict):
84 def display(self): print(self)
85
86 m2 = MyUserDict(u2)
87 m2a = m2.copy()
88 self.assertEqual(m2a, m2)
89
90 # SF bug #476616 -- copy() of UserDict subclass shared data
91 m2['foo'] = 'bar'
92 self.assertNotEqual(m2a, m2)
93
94 # Test keys, items, values
95 self.assertEqual(sorted(u2.keys()), sorted(d2.keys()))
96 self.assertEqual(sorted(u2.items()), sorted(d2.items()))
97 self.assertEqual(sorted(u2.values()), sorted(d2.values()))
98
99 # Test "in".
100 for i in u2.keys():
101 self.assertIn(i, u2)
102 self.assertEqual(i in u1, i in d1)
103 self.assertEqual(i in u0, i in d0)
104
105 # Test update
106 t = collections.UserDict()
107 t.update(u2)
108 self.assertEqual(t, u2)
109
110 # Test get
111 for i in u2.keys():
112 self.assertEqual(u2.get(i), u2[i])
113 self.assertEqual(u1.get(i), d1.get(i))
114 self.assertEqual(u0.get(i), d0.get(i))
115
116 # Test "in" iteration.
117 for i in range(20):
118 u2[i] = str(i)
119 ikeys = []
120 for k in u2:
121 ikeys.append(k)
122 keys = u2.keys()
123 self.assertEqual(set(ikeys), set(keys))
124
125 # Test setdefault
126 t = collections.UserDict()
127 self.assertEqual(t.setdefault("x", 42), 42)
128 self.assertIn("x", t)
129 self.assertEqual(t.setdefault("x", 23), 42)
130
131 # Test pop
132 t = collections.UserDict(x=42)
133 self.assertEqual(t.pop("x"), 42)
134 self.assertRaises(KeyError, t.pop, "x")
135 self.assertEqual(t.pop("x", 1), 1)
136 t["x"] = 42
137 self.assertEqual(t.pop("x", 1), 42)
138
139 # Test popitem
140 t = collections.UserDict(x=42)
141 self.assertEqual(t.popitem(), ("x", 42))
142 self.assertRaises(KeyError, t.popitem)
143
144 def test_init(self):
145 for kw in 'self', 'other', 'iterable':
146 self.assertEqual(list(collections.UserDict(**{kw: 42}).items()),
147 [(kw, 42)])
148 self.assertEqual(list(collections.UserDict({}, dict=42).items()),
149 [('dict', 42)])
150 self.assertEqual(list(collections.UserDict({}, dict=None).items()),
151 [('dict', None)])
152 self.assertEqual(list(collections.UserDict(dict={'a': 42}).items()),
153 [('dict', {'a': 42})])
154 self.assertRaises(TypeError, collections.UserDict, 42)
155 self.assertRaises(TypeError, collections.UserDict, (), ())
156 self.assertRaises(TypeError, collections.UserDict.__init__)
157
158 def test_update(self):
159 for kw in 'self', 'dict', 'other', 'iterable':
160 d = collections.UserDict()
161 d.update(**{kw: 42})
162 self.assertEqual(list(d.items()), [(kw, 42)])
163 self.assertRaises(TypeError, collections.UserDict().update, 42)
164 self.assertRaises(TypeError, collections.UserDict().update, {}, {})
165 self.assertRaises(TypeError, collections.UserDict.update)
166
167 def test_missing(self):
168 # Make sure UserDict doesn't have a __missing__ method
169 self.assertEqual(hasattr(collections.UserDict, "__missing__"), False)
170 # Test several cases:
171 # (D) subclass defines __missing__ method returning a value
172 # (E) subclass defines __missing__ method raising RuntimeError
173 # (F) subclass sets __missing__ instance variable (no effect)
174 # (G) subclass doesn't define __missing__ at all
175 class ESC[4;38;5;81mD(ESC[4;38;5;149mcollectionsESC[4;38;5;149m.ESC[4;38;5;149mUserDict):
176 def __missing__(self, key):
177 return 42
178 d = D({1: 2, 3: 4})
179 self.assertEqual(d[1], 2)
180 self.assertEqual(d[3], 4)
181 self.assertNotIn(2, d)
182 self.assertNotIn(2, d.keys())
183 self.assertEqual(d[2], 42)
184 class ESC[4;38;5;81mE(ESC[4;38;5;149mcollectionsESC[4;38;5;149m.ESC[4;38;5;149mUserDict):
185 def __missing__(self, key):
186 raise RuntimeError(key)
187 e = E()
188 try:
189 e[42]
190 except RuntimeError as err:
191 self.assertEqual(err.args, (42,))
192 else:
193 self.fail("e[42] didn't raise RuntimeError")
194 class ESC[4;38;5;81mF(ESC[4;38;5;149mcollectionsESC[4;38;5;149m.ESC[4;38;5;149mUserDict):
195 def __init__(self):
196 # An instance variable __missing__ should have no effect
197 self.__missing__ = lambda key: None
198 collections.UserDict.__init__(self)
199 f = F()
200 try:
201 f[42]
202 except KeyError as err:
203 self.assertEqual(err.args, (42,))
204 else:
205 self.fail("f[42] didn't raise KeyError")
206 class ESC[4;38;5;81mG(ESC[4;38;5;149mcollectionsESC[4;38;5;149m.ESC[4;38;5;149mUserDict):
207 pass
208 g = G()
209 try:
210 g[42]
211 except KeyError as err:
212 self.assertEqual(err.args, (42,))
213 else:
214 self.fail("g[42] didn't raise KeyError")
215
216
217
218 if __name__ == "__main__":
219 unittest.main()