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import pytest
from wtforms.validators import optional
from wtforms.validators import StopValidation
def test_input_optional_passes(dummy_form, dummy_field):
"""
optional should pause with given values
"""
validator = optional()
dummy_field.data = "foobar"
dummy_field.raw_data = ["foobar"]
validator(dummy_form, dummy_field)
@pytest.mark.parametrize("data_v, raw_data_v", [("", ""), (" ", " "), ("\t", "\t")])
def test_input_optional_raises(data_v, raw_data_v, dummy_form, dummy_field):
"""
optional should stop the validation chain if the data are not given
errors should be erased because the value is optional
white space should be considered as empty string too
"""
validator = optional()
dummy_field.data = data_v
dummy_field.raw_data = raw_data_v
with pytest.raises(StopValidation):
validator(dummy_form, dummy_field)
assert validator.field_flags == {"optional": True}
dummy_field.errors = ["Invalid Integer Value"]
assert len(dummy_field.errors) == 1
with pytest.raises(StopValidation):
validator(dummy_form, dummy_field)
assert len(dummy_field.errors) == 0
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