class SpecialComponent(components.Component):
foo = fields.IntField(required=False)
bar = fields.IntField(required=False)
def validate(self, data):
super().validate(data)
if ('foo' in data) == ('bar' in data):
raise exceptions.ValidationError("Only one of 'foo' or 'bar' can be set.")
def validate_bar(self, data):
if 'bar' in data and data['bar'] % 2 != 0:
raise exceptions.ValidationError("'bar' must be even.")
def test_bad_type(self):
field = fields.IntField(required=True)
field.name = 'widgets'
with self.assertRaises(exceptions.ValidationError) as e:
field.validate({'widgets': 'a'})
self.assertEqual(str(e.exception), "'widgets' must be an integer.")
def test_explicit_required(self):
field = fields.IntField(required=True)
field.name = 'widgets'
with self.assertRaises(exceptions.ValidationError) as e:
field.validate({})
self.assertEqual(str(e.exception), "'widgets' is required.")
def test_over_max(self):
field = fields.IntField(min=0, max=100, required=True)
field.name = 'widgets'
with self.assertRaises(exceptions.ValidationError) as e:
field.validate({'widgets': 200})
self.assertEqual(str(e.exception),
"'widgets' must be less than or equal to 100.")
def test_in_range(self):
field = fields.IntField(min=0, max=100, required=True)
field.name = 'widgets'
self.assertIsNone(field.validate({'widgets': 42}))
def test_not_required(self):
field = fields.IntField(required=False)
field.name = 'widgets'
self.assertIsNone(field.validate({}))