def test_return_failure_if_value_is_not_boolean(self):
field = BooleanField()
result = field.validate(request=None, value='foo')
assert not result.is_success
assert result.reason == 'Expected type Boolean'
def test_return_success_if_not_nullable_and_value_is_none(self):
field = BooleanField(nullable=False)
result = field.validate(request=None, value=None)
assert not result.is_success
assert result.reason == 'null is not a valid value'
def test_return_success_if_nullable_and_value_is_none(self):
field = BooleanField(nullable=True)
result = field.validate(request=None, value=None)
assert result.is_success
def test_return_success_if_value_is_default(self):
field = BooleanField()
result = field.validate(request=None, value=DEFAULT_FIELD_VALUE)
assert result.is_success
