mirror of https://github.com/python/cpython
500 lines
18 KiB
Python
500 lines
18 KiB
Python
"""Tests for C-implemented GenericAlias."""
|
|
|
|
import unittest
|
|
import pickle
|
|
from array import array
|
|
import copy
|
|
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 csv import DictReader, DictWriter
|
|
from dataclasses import Field
|
|
from functools import partial, partialmethod, cached_property
|
|
from graphlib import TopologicalSorter
|
|
from logging import LoggerAdapter, StreamHandler
|
|
from mailbox import Mailbox, _PartialFile
|
|
try:
|
|
import ctypes
|
|
except ImportError:
|
|
ctypes = None
|
|
from difflib import SequenceMatcher
|
|
from filecmp import dircmp
|
|
from fileinput import FileInput
|
|
from itertools import chain
|
|
from http.cookies import Morsel
|
|
try:
|
|
from multiprocessing.managers import ValueProxy, DictProxy, ListProxy
|
|
from multiprocessing.pool import ApplyResult
|
|
from multiprocessing.queues import SimpleQueue as MPSimpleQueue
|
|
from multiprocessing.queues import Queue as MPQueue
|
|
from multiprocessing.queues import JoinableQueue as MPJoinableQueue
|
|
except ImportError:
|
|
# _multiprocessing module is optional
|
|
ValueProxy = None
|
|
DictProxy = None
|
|
ListProxy = None
|
|
ApplyResult = None
|
|
MPSimpleQueue = None
|
|
MPQueue = None
|
|
MPJoinableQueue = None
|
|
try:
|
|
from multiprocessing.shared_memory import ShareableList
|
|
except ImportError:
|
|
# multiprocessing.shared_memory is not available on e.g. Android
|
|
ShareableList = None
|
|
from os import DirEntry
|
|
from re import Pattern, Match
|
|
from types import GenericAlias, MappingProxyType, AsyncGeneratorType, CoroutineType, GeneratorType
|
|
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 Unpack
|
|
try:
|
|
from tkinter import Event
|
|
except ImportError:
|
|
Event = None
|
|
|
|
from typing import TypeVar
|
|
T = TypeVar('T')
|
|
K = TypeVar('K')
|
|
V = TypeVar('V')
|
|
|
|
_UNPACKED_TUPLES = [
|
|
# Unpacked tuple using `*`
|
|
(*tuple[int],)[0],
|
|
(*tuple[T],)[0],
|
|
(*tuple[int, str],)[0],
|
|
(*tuple[int, ...],)[0],
|
|
(*tuple[T, ...],)[0],
|
|
tuple[*tuple[int, ...]],
|
|
tuple[*tuple[T, ...]],
|
|
tuple[str, *tuple[int, ...]],
|
|
tuple[*tuple[int, ...], str],
|
|
tuple[float, *tuple[int, ...], str],
|
|
tuple[*tuple[*tuple[int, ...]]],
|
|
# Unpacked tuple using `Unpack`
|
|
Unpack[tuple[int]],
|
|
Unpack[tuple[T]],
|
|
Unpack[tuple[int, str]],
|
|
Unpack[tuple[int, ...]],
|
|
Unpack[tuple[T, ...]],
|
|
tuple[Unpack[tuple[int, ...]]],
|
|
tuple[Unpack[tuple[T, ...]]],
|
|
tuple[str, Unpack[tuple[int, ...]]],
|
|
tuple[Unpack[tuple[int, ...]], str],
|
|
tuple[float, Unpack[tuple[int, ...]], str],
|
|
tuple[Unpack[tuple[Unpack[tuple[int, ...]]]]],
|
|
# Unpacked tuple using `*` AND `Unpack`
|
|
tuple[Unpack[tuple[*tuple[int, ...]]]],
|
|
tuple[*tuple[Unpack[tuple[int, ...]]]],
|
|
]
|
|
|
|
|
|
class BaseTest(unittest.TestCase):
|
|
"""Test basics."""
|
|
generic_types = [type, tuple, list, dict, set, frozenset, enumerate, memoryview,
|
|
defaultdict, deque,
|
|
SequenceMatcher,
|
|
dircmp,
|
|
FileInput,
|
|
OrderedDict, Counter, UserDict, UserList,
|
|
Pattern, Match,
|
|
partial, partialmethod, cached_property,
|
|
TopologicalSorter,
|
|
AbstractContextManager, AbstractAsyncContextManager,
|
|
Awaitable, Coroutine,
|
|
AsyncIterable, AsyncIterator,
|
|
AsyncGenerator, Generator,
|
|
Iterable, Iterator,
|
|
Reversible,
|
|
Container, Collection,
|
|
Mailbox, _PartialFile,
|
|
ContextVar, Token,
|
|
Field,
|
|
Set, MutableSet,
|
|
Mapping, MutableMapping, MappingView,
|
|
KeysView, ItemsView, ValuesView,
|
|
Sequence, MutableSequence,
|
|
MappingProxyType, AsyncGeneratorType,
|
|
GeneratorType, CoroutineType,
|
|
DirEntry,
|
|
chain,
|
|
LoggerAdapter, StreamHandler,
|
|
TemporaryDirectory, SpooledTemporaryFile,
|
|
Queue, SimpleQueue,
|
|
_AssertRaisesContext,
|
|
SplitResult, ParseResult,
|
|
WeakSet, ReferenceType, ref,
|
|
ShareableList,
|
|
Future, _WorkItem,
|
|
Morsel,
|
|
DictReader, DictWriter,
|
|
array]
|
|
if ctypes is not None:
|
|
generic_types.extend((ctypes.Array, ctypes.LibraryLoader))
|
|
if ValueProxy is not None:
|
|
generic_types.extend((ValueProxy, DictProxy, ListProxy, ApplyResult,
|
|
MPSimpleQueue, MPQueue, MPJoinableQueue))
|
|
if Event is not None:
|
|
generic_types.append(Event)
|
|
|
|
def test_subscriptable(self):
|
|
for t in self.generic_types:
|
|
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.assertRaisesRegex(TypeError, tname):
|
|
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
|
|
class MyGeneric:
|
|
__class_getitem__ = classmethod(GenericAlias)
|
|
|
|
self.assertEqual(repr(list[str]), 'list[str]')
|
|
self.assertEqual(repr(list[()]), 'list[()]')
|
|
self.assertEqual(repr(tuple[int, ...]), 'tuple[int, ...]')
|
|
x1 = tuple[*tuple[int]]
|
|
self.assertEqual(repr(x1), 'tuple[*tuple[int]]')
|
|
x2 = tuple[*tuple[int, str]]
|
|
self.assertEqual(repr(x2), 'tuple[*tuple[int, str]]')
|
|
x3 = tuple[*tuple[int, ...]]
|
|
self.assertEqual(repr(x3), 'tuple[*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
|
|
|
|
# gh-105488
|
|
self.assertTrue(repr(MyGeneric[int]).endswith('MyGeneric[int]'))
|
|
self.assertTrue(repr(MyGeneric[[]]).endswith('MyGeneric[[]]'))
|
|
self.assertTrue(repr(MyGeneric[[int, str]]).endswith('MyGeneric[[int, str]]'))
|
|
|
|
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 List, Dict, Callable
|
|
|
|
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,))
|
|
L2 = list[list[T]]
|
|
self.assertEqual(L2.__args__, (list[T],))
|
|
self.assertEqual(L2.__parameters__, (T,))
|
|
L3 = list[List[T]]
|
|
self.assertEqual(L3.__args__, (List[T],))
|
|
self.assertEqual(L3.__parameters__, (T,))
|
|
L4a = list[Dict[K, V]]
|
|
self.assertEqual(L4a.__args__, (Dict[K, V],))
|
|
self.assertEqual(L4a.__parameters__, (K, V))
|
|
L4b = list[Dict[T, int]]
|
|
self.assertEqual(L4b.__args__, (Dict[T, int],))
|
|
self.assertEqual(L4b.__parameters__, (T,))
|
|
L5 = list[Callable[[K, V], K]]
|
|
self.assertEqual(L5.__args__, (Callable[[K, V], K],))
|
|
self.assertEqual(L5.__parameters__, (K, V))
|
|
|
|
T1 = tuple[*tuple[int]]
|
|
self.assertEqual(
|
|
T1.__args__,
|
|
(*tuple[int],),
|
|
)
|
|
self.assertEqual(T1.__parameters__, ())
|
|
|
|
T2 = tuple[*tuple[T]]
|
|
self.assertEqual(
|
|
T2.__args__,
|
|
(*tuple[T],),
|
|
)
|
|
self.assertEqual(T2.__parameters__, (T,))
|
|
|
|
T4 = tuple[*tuple[int, str]]
|
|
self.assertEqual(
|
|
T4.__args__,
|
|
(*tuple[int, str],),
|
|
)
|
|
self.assertEqual(T4.__parameters__, ())
|
|
|
|
def test_parameter_chaining(self):
|
|
from typing import List, Dict, Union, Callable
|
|
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[K, V][str, int], dict[str, int])
|
|
self.assertEqual(dict[T, T][int], dict[int, int])
|
|
|
|
self.assertEqual(list[list[T]][int], list[list[int]])
|
|
self.assertEqual(list[dict[T, int]][str], list[dict[str, int]])
|
|
self.assertEqual(list[dict[str, T]][int], list[dict[str, int]])
|
|
self.assertEqual(list[dict[K, V]][str, int], list[dict[str, int]])
|
|
self.assertEqual(dict[T, list[int]][str], dict[str, list[int]])
|
|
|
|
self.assertEqual(list[List[T]][int], list[List[int]])
|
|
self.assertEqual(list[Dict[K, V]][str, int], list[Dict[str, int]])
|
|
self.assertEqual(list[Union[K, V]][str, int], list[Union[str, int]])
|
|
self.assertEqual(list[Callable[[K, V], K]][str, int],
|
|
list[Callable[[str, int], str]])
|
|
self.assertEqual(dict[T, List[int]][str], dict[str, List[int]])
|
|
|
|
with self.assertRaises(TypeError):
|
|
list[int][int]
|
|
with self.assertRaises(TypeError):
|
|
dict[T, int][str, int]
|
|
with self.assertRaises(TypeError):
|
|
dict[str, T][str, int]
|
|
with self.assertRaises(TypeError):
|
|
dict[T, T][str, int]
|
|
|
|
def test_equality(self):
|
|
self.assertEqual(list[int], list[int])
|
|
self.assertEqual(dict[str, int], dict[str, int])
|
|
self.assertEqual((*tuple[int],)[0], (*tuple[int],)[0])
|
|
self.assertEqual(tuple[*tuple[int]], tuple[*tuple[int]])
|
|
self.assertNotEqual(dict[str, int], dict[str, str])
|
|
self.assertNotEqual(list, list[int])
|
|
self.assertNotEqual(list[int], list)
|
|
self.assertNotEqual(list[int], tuple[int])
|
|
self.assertNotEqual((*tuple[int],)[0], tuple[int])
|
|
|
|
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.assertRaisesRegex(TypeError, 'MyType'):
|
|
MyType[int]
|
|
|
|
def test_pickle(self):
|
|
aliases = [GenericAlias(list, T)] + _UNPACKED_TUPLES
|
|
for alias in aliases:
|
|
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
|
|
with self.subTest(alias=alias, proto=proto):
|
|
s = pickle.dumps(alias, proto)
|
|
loaded = pickle.loads(s)
|
|
self.assertEqual(loaded.__origin__, alias.__origin__)
|
|
self.assertEqual(loaded.__args__, alias.__args__)
|
|
self.assertEqual(loaded.__parameters__, alias.__parameters__)
|
|
self.assertEqual(type(loaded), type(alias))
|
|
|
|
def test_copy(self):
|
|
class X(list):
|
|
def __copy__(self):
|
|
return self
|
|
def __deepcopy__(self, memo):
|
|
return self
|
|
|
|
aliases = [
|
|
GenericAlias(list, T),
|
|
GenericAlias(deque, T),
|
|
GenericAlias(X, T)
|
|
] + _UNPACKED_TUPLES
|
|
for alias in aliases:
|
|
with self.subTest(alias=alias):
|
|
copied = copy.copy(alias)
|
|
self.assertEqual(copied.__origin__, alias.__origin__)
|
|
self.assertEqual(copied.__args__, alias.__args__)
|
|
self.assertEqual(copied.__parameters__, alias.__parameters__)
|
|
copied = copy.deepcopy(alias)
|
|
self.assertEqual(copied.__origin__, alias.__origin__)
|
|
self.assertEqual(copied.__args__, alias.__args__)
|
|
self.assertEqual(copied.__parameters__, alias.__parameters__)
|
|
|
|
def test_unpack(self):
|
|
alias = tuple[str, ...]
|
|
self.assertIs(alias.__unpacked__, False)
|
|
unpacked = (*alias,)[0]
|
|
self.assertIs(unpacked.__unpacked__, True)
|
|
|
|
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):
|
|
a = typing.Union[list[T], tuple[T, ...]]
|
|
self.assertEqual(a.__args__, (list[T], tuple[T, ...]))
|
|
self.assertEqual(a.__parameters__, (T,))
|
|
|
|
def test_dir(self):
|
|
dir_of_gen_alias = set(dir(list[int]))
|
|
self.assertTrue(dir_of_gen_alias.issuperset(dir(list)))
|
|
for generic_alias_property in ("__origin__", "__args__", "__parameters__"):
|
|
self.assertIn(generic_alias_property, dir_of_gen_alias)
|
|
|
|
def test_weakref(self):
|
|
for t in self.generic_types:
|
|
if t is None:
|
|
continue
|
|
tname = t.__name__
|
|
with self.subTest(f"Testing {tname}"):
|
|
alias = t[int]
|
|
self.assertEqual(ref(alias)(), alias)
|
|
|
|
def test_no_kwargs(self):
|
|
# bpo-42576
|
|
with self.assertRaises(TypeError):
|
|
GenericAlias(bad=float)
|
|
|
|
def test_subclassing_types_genericalias(self):
|
|
class SubClass(GenericAlias): ...
|
|
alias = SubClass(list, int)
|
|
class Bad(GenericAlias):
|
|
def __new__(cls, *args, **kwargs):
|
|
super().__new__(cls, *args, **kwargs)
|
|
|
|
self.assertEqual(alias, list[int])
|
|
with self.assertRaises(TypeError):
|
|
Bad(list, int, bad=int)
|
|
|
|
def test_iter_creates_starred_tuple(self):
|
|
t = tuple[int, str]
|
|
iter_t = iter(t)
|
|
x = next(iter_t)
|
|
self.assertEqual(repr(x), '*tuple[int, str]')
|
|
|
|
def test_calling_next_twice_raises_stopiteration(self):
|
|
t = tuple[int, str]
|
|
iter_t = iter(t)
|
|
next(iter_t)
|
|
with self.assertRaises(StopIteration):
|
|
next(iter_t)
|
|
|
|
def test_del_iter(self):
|
|
t = tuple[int, str]
|
|
iter_x = iter(t)
|
|
del iter_x
|
|
|
|
|
|
class TypeIterationTests(unittest.TestCase):
|
|
_UNITERABLE_TYPES = (list, tuple)
|
|
|
|
def test_cannot_iterate(self):
|
|
for test_type in self._UNITERABLE_TYPES:
|
|
with self.subTest(type=test_type):
|
|
expected_error_regex = "object is not iterable"
|
|
with self.assertRaisesRegex(TypeError, expected_error_regex):
|
|
iter(test_type)
|
|
with self.assertRaisesRegex(TypeError, expected_error_regex):
|
|
list(test_type)
|
|
with self.assertRaisesRegex(TypeError, expected_error_regex):
|
|
for _ in test_type:
|
|
pass
|
|
|
|
def test_is_not_instance_of_iterable(self):
|
|
for type_to_test in self._UNITERABLE_TYPES:
|
|
self.assertNotIsInstance(type_to_test, Iterable)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|