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from pytest import MonkeyPatch
from typeguard import load_plugins
def test_custom_type_checker(monkeypatch: MonkeyPatch) -> None:
def lookup_func(origin_type, args, extras):
pass
class FakeEntryPoint:
name = "test"
def load(self):
return lookup_func
def fake_entry_points(group):
assert group == "typeguard.checker_lookup"
return [FakeEntryPoint()]
checker_lookup_functions = []
monkeypatch.setattr("typeguard._checkers.entry_points", fake_entry_points)
monkeypatch.setattr(
"typeguard._checkers.checker_lookup_functions", checker_lookup_functions
)
load_plugins()
assert checker_lookup_functions[0] is lookup_func
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