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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
"""Tests for C-implemented GenericAlias."""
import unittest
import pickle
from collections import (
defaultdict, deque, OrderedDict, Counter, UserDict, UserList
)
from collections.abc import *
from concurrent.futures import Future
from concurrent.futures.thread import _WorkItem
from contextlib import AbstractContextManager, AbstractAsyncContextManager
from contextvars import ContextVar, Token
from dataclasses import Field
from functools import partial, partialmethod, cached_property
from mailbox import Mailbox, _PartialFile
from ctypes import Array, LibraryLoader
from difflib import SequenceMatcher
from filecmp import dircmp
from fileinput import FileInput
from mmap import mmap
from ipaddress import IPv4Network, IPv4Interface, IPv6Network, IPv6Interface
from itertools import chain
from http.cookies import Morsel
from multiprocessing.managers import ValueProxy
from multiprocessing.pool import ApplyResult
try:
from multiprocessing.shared_memory import ShareableList
except ImportError:
# multiprocessing.shared_memory is not available on e.g. Android
ShareableList = None
from multiprocessing.queues import SimpleQueue
from os import DirEntry
from re import Pattern, Match
from types import GenericAlias, MappingProxyType, AsyncGeneratorType
from tempfile import TemporaryDirectory, SpooledTemporaryFile
from urllib.parse import SplitResult, ParseResult
from unittest.case import _AssertRaisesContext
from queue import Queue, SimpleQueue
from weakref import WeakSet, ReferenceType, ref
import typing
from typing import TypeVar
T = TypeVar('T')
class BaseTest(unittest.TestCase):
"""Test basics."""
def test_subscriptable(self):
for t in (type, tuple, list, dict, set, frozenset, enumerate,
mmap,
defaultdict, deque,
SequenceMatcher,
dircmp,
FileInput,
OrderedDict, Counter, UserDict, UserList,
Pattern, Match,
partial, partialmethod, cached_property,
AbstractContextManager, AbstractAsyncContextManager,
Awaitable, Coroutine,
AsyncIterable, AsyncIterator,
AsyncGenerator, Generator,
Iterable, Iterator,
Reversible,
Container, Collection,
Callable,
Mailbox, _PartialFile,
ContextVar, Token,
Field,
Set, MutableSet,
Mapping, MutableMapping, MappingView,
KeysView, ItemsView, ValuesView,
Sequence, MutableSequence,
MappingProxyType, AsyncGeneratorType,
DirEntry,
IPv4Network, IPv4Interface, IPv6Network, IPv6Interface,
chain,
TemporaryDirectory, SpooledTemporaryFile,
Queue, SimpleQueue,
_AssertRaisesContext,
Array, LibraryLoader,
SplitResult, ParseResult,
ValueProxy, ApplyResult,
WeakSet, ReferenceType, ref,
ShareableList, SimpleQueue,
Future, _WorkItem,
Morsel,
):
if t is None:
continue
tname = t.__name__
with self.subTest(f"Testing {tname}"):
alias = t[int]
self.assertIs(alias.__origin__, t)
self.assertEqual(alias.__args__, (int,))
self.assertEqual(alias.__parameters__, ())
def test_unsubscriptable(self):
for t in int, str, float, Sized, Hashable:
tname = t.__name__
with self.subTest(f"Testing {tname}"):
with self.assertRaises(TypeError):
t[int]
def test_instantiate(self):
for t in tuple, list, dict, set, frozenset, defaultdict, deque:
tname = t.__name__
with self.subTest(f"Testing {tname}"):
alias = t[int]
self.assertEqual(alias(), t())
if t is dict:
self.assertEqual(alias(iter([('a', 1), ('b', 2)])), dict(a=1, b=2))
self.assertEqual(alias(a=1, b=2), dict(a=1, b=2))
elif t is defaultdict:
def default():
return 'value'
a = alias(default)
d = defaultdict(default)
self.assertEqual(a['test'], d['test'])
else:
self.assertEqual(alias(iter((1, 2, 3))), t((1, 2, 3)))
def test_unbound_methods(self):
t = list[int]
a = t()
t.append(a, 'foo')
self.assertEqual(a, ['foo'])
x = t.__getitem__(a, 0)
self.assertEqual(x, 'foo')
self.assertEqual(t.__len__(a), 1)
def test_subclassing(self):
class C(list[int]):
pass
self.assertEqual(C.__bases__, (list,))
self.assertEqual(C.__class__, type)
def test_class_methods(self):
t = dict[int, None]
self.assertEqual(dict.fromkeys(range(2)), {0: None, 1: None}) # This works
self.assertEqual(t.fromkeys(range(2)), {0: None, 1: None}) # Should be equivalent
def test_no_chaining(self):
t = list[int]
with self.assertRaises(TypeError):
t[int]
def test_generic_subclass(self):
class MyList(list):
pass
t = MyList[int]
self.assertIs(t.__origin__, MyList)
self.assertEqual(t.__args__, (int,))
self.assertEqual(t.__parameters__, ())
def test_repr(self):
class MyList(list):
pass
self.assertEqual(repr(list[str]), 'list[str]')
self.assertEqual(repr(list[()]), 'list[()]')
self.assertEqual(repr(tuple[int, ...]), 'tuple[int, ...]')
self.assertTrue(repr(MyList[int]).endswith('.BaseTest.test_repr.<locals>.MyList[int]'))
self.assertEqual(repr(list[str]()), '[]') # instances should keep their normal repr
def test_exposed_type(self):
import types
a = types.GenericAlias(list, int)
self.assertEqual(str(a), 'list[int]')
self.assertIs(a.__origin__, list)
self.assertEqual(a.__args__, (int,))
self.assertEqual(a.__parameters__, ())
def test_parameters(self):
from typing import TypeVar
T = TypeVar('T')
K = TypeVar('K')
V = TypeVar('V')
D0 = dict[str, int]
self.assertEqual(D0.__args__, (str, int))
self.assertEqual(D0.__parameters__, ())
D1a = dict[str, V]
self.assertEqual(D1a.__args__, (str, V))
self.assertEqual(D1a.__parameters__, (V,))
D1b = dict[K, int]
self.assertEqual(D1b.__args__, (K, int))
self.assertEqual(D1b.__parameters__, (K,))
D2a = dict[K, V]
self.assertEqual(D2a.__args__, (K, V))
self.assertEqual(D2a.__parameters__, (K, V))
D2b = dict[T, T]
self.assertEqual(D2b.__args__, (T, T))
self.assertEqual(D2b.__parameters__, (T,))
L0 = list[str]
self.assertEqual(L0.__args__, (str,))
self.assertEqual(L0.__parameters__, ())
L1 = list[T]
self.assertEqual(L1.__args__, (T,))
self.assertEqual(L1.__parameters__, (T,))
def test_parameter_chaining(self):
from typing import TypeVar
T = TypeVar('T')
self.assertEqual(list[T][int], list[int])
self.assertEqual(dict[str, T][int], dict[str, int])
self.assertEqual(dict[T, int][str], dict[str, int])
self.assertEqual(dict[T, T][int], dict[int, int])
with self.assertRaises(TypeError):
list[int][int]
dict[T, int][str, int]
dict[str, T][str, int]
dict[T, T][str, int]
def test_equality(self):
self.assertEqual(list[int], list[int])
self.assertEqual(dict[str, int], dict[str, int])
self.assertNotEqual(dict[str, int], dict[str, str])
self.assertNotEqual(list, list[int])
self.assertNotEqual(list[int], list)
def test_isinstance(self):
self.assertTrue(isinstance([], list))
with self.assertRaises(TypeError):
isinstance([], list[str])
def test_issubclass(self):
class L(list): ...
self.assertTrue(issubclass(L, list))
with self.assertRaises(TypeError):
issubclass(L, list[str])
def test_type_generic(self):
t = type[int]
Test = t('Test', (), {})
self.assertTrue(isinstance(Test, type))
test = Test()
self.assertEqual(t(test), Test)
self.assertEqual(t(0), int)
def test_type_subclass_generic(self):
class MyType(type):
pass
with self.assertRaises(TypeError):
MyType[int]
def test_pickle(self):
alias = GenericAlias(list, T)
s = pickle.dumps(alias)
loaded = pickle.loads(s)
self.assertEqual(alias.__origin__, loaded.__origin__)
self.assertEqual(alias.__args__, loaded.__args__)
self.assertEqual(alias.__parameters__, loaded.__parameters__)
def test_union(self):
a = typing.Union[list[int], list[str]]
self.assertEqual(a.__args__, (list[int], list[str]))
self.assertEqual(a.__parameters__, ())
def test_union_generic(self):
T = typing.TypeVar('T')
a = typing.Union[list[T], tuple[T, ...]]
self.assertEqual(a.__args__, (list[T], tuple[T, ...]))
self.assertEqual(a.__parameters__, (T,))
if __name__ == "__main__":
unittest.main()
|
