def test_fields_can_fail_to_select_validators():
# Given that I have an instance of a field with a nonstandard annotation and validator options
field = Field("example", None, minimum=10)
# When I call its select_validator method
# Then a RuntimeError should be raised
with pytest.raises(RuntimeError):
field.select_validator()
def test_fields_with_optional_unions(annotation, value, expected):
field = Field(annotation=annotation)
field.select_validator()
assert field.validate(value) == expected