def test_failing_attribute_call():
class ImproperlyAttributed(object):
timestamp = datetime.datetime.now()
obj = ImproperlyAttributed()
with pytest.raises(AttributeError):
call_attributes(obj, FIELDS)
def test_successful_attribute_call():
class ProperlyAttributed(object):
started = datetime.datetime.now()
obj = ProperlyAttributed()
assert call_attributes(obj, FIELDS)
