Python code coverage for Lib/test/test_userdict.py

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