def test_get_value_from_lazy_object(self):
field = DEDField(attr='translation')
instance = NonCallableMock(translation=_("foo"))
self.assertIsInstance(
field.get_value_from_instance(instance), string_types
)
self.assertEqual(field.get_value_from_instance(instance), "foo")
def test_get_value_from_instance_with_unknown_attr(self):
class Dummy:
attr1 = "foo"
field = DEDField(attr='attr2')
self.assertRaises(VariableLookupError, field.get_value_from_instance,
Dummy())
def test_get_value_from_none(self):
field = DEDField(attr='related.none')
instance = NonCallableMock(attr1="foo", related=None)
self.assertEqual(field.get_value_from_instance(instance), None)
def test_get_value_from_instance_related_callable(self):
field = DEDField(attr='related.callable')
instance = NonCallableMock(related=NonCallableMock(
callable=Mock(return_value="bar"), attr1="foo"))
self.assertEqual(field.get_value_from_instance(instance), "bar")
def test_get_value_from_instance_related_attr(self):
field = DEDField(attr='related.attr1')
instance = NonCallableMock(attr1="foo",
related=NonCallableMock(attr1="bar"))
self.assertEqual(field.get_value_from_instance(instance), "bar")
def test_get_value_from_instance_attr(self):
field = DEDField(attr='attr1')
instance = NonCallableMock(attr1="foo", attr2="bar")
self.assertEqual(field.get_value_from_instance(instance), "foo")
def test_attr_to_path(self):
field = DEDField(attr='field')
self.assertEqual(field._path, ['field'])
field = DEDField(attr='obj.field')
self.assertEqual(field._path, ['obj', 'field'])