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from sys import version_info |
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from typing import List, Dict, Union, Optional, Callable, Any, Tuple, Type, Iterable |
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from unittest import TestCase, skipUnless |
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import nptyping as nptyping |
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import numpy |
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from typish import Literal, instance_of, State, register_get_type |
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class A: pass |
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class B(A): pass |
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class C(B): pass |
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class D(C): pass |
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class E(D): pass |
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class F(E, str): pass |
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class TestInstanceOf(TestCase): |
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def test_instance_of(self): |
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self.assertTrue(instance_of([[[1], [2]]], List[List[List[int]]])) |
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self.assertTrue(instance_of([[[1], ['2']]], List[List[List[object]]])) |
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self.assertTrue(instance_of([], List[int])) |
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self.assertTrue(instance_of({}, Dict[int, int])) |
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def test_instance_of_multiple(self): |
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self.assertTrue(instance_of(F(), A)) |
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self.assertTrue(instance_of(F(), str)) |
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self.assertTrue(instance_of(F(), A, str)) |
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self.assertTrue(not instance_of(F(), A, str, int)) |
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def test_instance_of_union(self): |
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self.assertTrue(instance_of(F(), Union[int, A])) |
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self.assertTrue(instance_of(F(), Union[A, int])) |
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self.assertTrue(instance_of(F(), Union[A, str])) |
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self.assertTrue(instance_of(F(), Optional[str])) |
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self.assertTrue(instance_of(None, Optional[str])) |
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self.assertTrue(instance_of(Any, Union[int, Literal[Any]])) |
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def test_instance_of_callable(self): |
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def func1(x: int, y: str) -> object: |
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pass |
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def func2() -> int: |
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pass |
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def func3(x: int): |
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pass |
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def func4(): |
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pass |
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def func5(x): |
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pass |
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def func6(l: List[List[List[int]]]): |
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pass |
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self.assertTrue(instance_of(func1, Callable[[int, str], object])) |
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self.assertTrue(instance_of(func1, Callable[[object, str], object])) |
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self.assertTrue(not instance_of(func1, Callable[[str, str], object])) |
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self.assertTrue(not instance_of(func1, Callable[[str, str], int])) |
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self.assertTrue(instance_of(func2, Callable[[], int])) |
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self.assertTrue(instance_of(func3, Callable[[int], Any])) |
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self.assertTrue(instance_of(func4, Callable)) |
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self.assertTrue(instance_of(func5, Callable[[Any], Any])) |
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self.assertTrue(instance_of(func6, Callable[[List[List[List[int]]]], Any])) |
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def test_lambda_instance_of_callable(self): |
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self.assertTrue(instance_of(lambda x, y: 42, Callable[[int, str], str])) |
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self.assertTrue(instance_of(lambda: 42, Callable[[], str])) |
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def test_instance_of_type(self): |
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self.assertTrue(instance_of(int, Type)) |
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self.assertTrue(instance_of(int, Type[int])) |
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self.assertTrue(not instance_of(str, Type[int])) |
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def test_instance_of_tuple(self): |
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self.assertTrue(instance_of((1,), Tuple[int])) |
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self.assertTrue(instance_of((1, 2, 3), Tuple[int, ...])) |
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def test_instance_of_list_with_union(self): |
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self.assertTrue(instance_of([1, '2', 3], List[Union[int, str]])) |
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self.assertTrue(not instance_of([1, '2', 3], List[Union[int, float]])) |
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def test_instance_of_tuple_with_union(self): |
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self.assertTrue(instance_of((1, '2', 3), Tuple[Union[int, str], ...])) |
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self.assertTrue(not instance_of((1, '2', 3), Tuple[Union[int, float], ...])) |
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def test_instance_of_iterable(self): |
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self.assertTrue(instance_of([1, 2, 3], Iterable[int])) |
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self.assertTrue(instance_of((1, 2, 3), Iterable[int])) |
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def test_instance_of_literal(self): |
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self.assertTrue(instance_of(42, Literal[42])) |
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self.assertTrue(instance_of(42, Literal[42], int)) |
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self.assertTrue(not instance_of(43, Literal[42])) |
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self.assertTrue(not instance_of(42, Literal[42], str)) |
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self.assertTrue(not instance_of(42, Literal)) |
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self.assertTrue(instance_of(Any, Literal[Any])) |
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self.assertTrue(not instance_of(42, Literal[Any])) |
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self.assertTrue(not instance_of(42, Literal)) |
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self.assertTrue(instance_of(2, Literal[1, 2])) |
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def test_instance_of_typing_literal(self): |
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# This is to mock Python 3.8 Literal. |
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class LiteralMockMeta(type): |
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__name__ = 'Literal' |
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def __instancecheck__(self, instance): |
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raise Exception('typing.Literal does not allow instance checks.') |
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class LiteralMock(metaclass=LiteralMockMeta): |
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__args__ = (42,) |
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self.assertTrue(instance_of(42, LiteralMock)) |
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def test_instance_of_numpy(self): |
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self.assertTrue(instance_of(numpy.array([1, 2, 3]), numpy.ndarray)) |
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def test_instance_of_nptyping_ndarray(self): |
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local_state = State() |
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register_get_type(numpy.ndarray, nptyping.NDArray.type_of, local_state) |
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arr = numpy.array([1, 2, 3]) |
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arr_type = nptyping.NDArray[(3,), int] |
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self.assertTrue(instance_of(arr, arr_type, state=local_state)) |
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self.assertTrue(instance_of([arr], List[arr_type], state=local_state)) |
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self.assertTrue(instance_of([arr], List[nptyping.NDArray], state=local_state)) |
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self.assertTrue(not instance_of([arr], List[nptyping.NDArray[(4,), float]], state=local_state)) |
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@skipUnless(10 * version_info.major + version_info.minor >= 39, 'PEP-585') |
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def test_instance_of_py39_types(self): |
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self.assertTrue(instance_of({'42': 42}, Dict[str, int])) |
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self.assertTrue(not instance_of({'42': 42}, Dict[str, str])) |
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self.assertTrue(not instance_of({42: 42}, Dict[str, int])) |
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self.assertTrue(instance_of([1, 2, 3], list[int])) |
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self.assertTrue(not instance_of([1, 2, 3], list[str])) |
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ramonhagenaars /
typish
