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import typing
from unittest.mock import MagicMock
import pytest
from python_utils.decorators import sample, wraps_classmethod
T = typing.TypeVar('T')
@pytest.fixture
def random(monkeypatch: pytest.MonkeyPatch) -> MagicMock:
mock = MagicMock()
monkeypatch.setattr(
'python_utils.decorators.random.random', mock, raising=True
)
return mock
def test_sample_called(random: MagicMock) -> None:
demo_function = MagicMock()
decorated = sample(0.5)(demo_function)
random.return_value = 0.4
decorated()
random.return_value = 0.0
decorated()
args = [1, 2]
kwargs = {'1': 1, '2': 2}
decorated(*args, **kwargs)
demo_function.assert_called_with(*args, **kwargs)
assert demo_function.call_count == 3
def test_sample_not_called(random: MagicMock) -> None:
demo_function = MagicMock()
decorated = sample(0.5)(demo_function)
random.return_value = 0.5
decorated()
random.return_value = 1.0
decorated()
assert demo_function.call_count == 0
class SomeClass:
@classmethod
def some_classmethod(cls, arg: T) -> T:
return arg
@classmethod
def some_annotated_classmethod(cls, arg: int) -> int:
return arg
def test_wraps_classmethod() -> None:
some_class = SomeClass()
some_class.some_classmethod = MagicMock() # type: ignore[method-assign]
wrapped_method = wraps_classmethod(SomeClass.some_classmethod)(
some_class.some_classmethod
)
wrapped_method(123)
some_class.some_classmethod.assert_called_with(123)
def test_wraps_annotated_classmethod() -> None:
some_class = SomeClass()
some_class.some_annotated_classmethod = MagicMock() # type: ignore[method-assign]
wrapped_method = wraps_classmethod(SomeClass.some_annotated_classmethod)(
some_class.some_annotated_classmethod
)
wrapped_method(123)
some_class.some_annotated_classmethod.assert_called_with(123)
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