def test_get_attribute_raises_not_implemented_error(self):
class FakeObject(object):
def __init__(self, pk):
self.pk = pk
obj = FakeObject(10)
instance = RelatedField(read_only=True)
instance.bind('pk', None)
with self.assertRaises(NotImplementedError):
self.assertEqual(instance.get_attribute(obj), obj.pk)
def test_to_internal_value_raises_error_for_empty_value(self):
child_instance = RelatedField(read_only=True)
instance = ManyRelatedField(
child_relation=child_instance, allow_empty=False
)
with self.assertRaises(ValidationError):
instance.to_internal_value([])
def test_get_value_returns_empty_value(self):
child_instance = RelatedField(read_only=True)
instance = ManyRelatedField(child_relation=child_instance)
instance.bind('pk_list', None)
self.assertEqual(
instance.get_value({'pks': [1, 2, 3]}),
empty
)
def test_get_attribute_raises_not_implemented_error(self):
class FakeObject(object):
def __init__(self, pk):
self.pk = pk
def __str__(self):
return str(self.pk)
child_instance = RelatedField(read_only=True)
instance = ManyRelatedField(child_relation=child_instance)
with self.assertRaises(NotImplementedError):
instance.get_attribute(FakeObject(10))
def test_run_validation_raises_skip_field_exception_for_empty_string(self):
instance = RelatedField(read_only=True)
with self.assertRaises(SkipField):
instance.run_validation('')
def test_run_validation(self):
instance = RelatedField(read_only=True)
with self.assertRaises(SkipField):
value = object()
instance.run_validation(value)
def test_init_raises_assertion_error_for_read_only_field(self):
with self.assertRaises(AssertionError):
RelatedField(read_only=False)
def test_init_raises_assertion_error_for_not_specified_queryset(self):
with self.assertRaises(AssertionError):
RelatedField()
def test_to_internal_value_raises_error_for_not_a_list_argument(self):
child_instance = RelatedField(read_only=True)
instance = ManyRelatedField(child_relation=child_instance)
with self.assertRaises(ValidationError):
instance.to_internal_value(object())
def test_use_pk_only_optimization_returns_False(self):
instance = RelatedField(read_only=True)
self.assertFalse(instance.use_pk_only_optimization())
def test_get_queryset_raises_not_implemented_error(self):
instance = RelatedField(read_only=True)
with self.assertRaises(NotImplementedError):
instance.get_queryset()