from __future__ import absolute_import, division, print_function from attr import Attribute from attr._make import NOTHING, make_class def simple_class(cmp=False, repr=False, hash=False, slots=False): """ Return a new simple class. """ return make_class( "C", ["a", "b"], cmp=cmp, repr=repr, hash=hash, init=True, slots=slots ) def simple_attr(name, default=NOTHING, validator=None, repr=True, cmp=True, hash=True, init=True): """ Return an attribute with a name and no other bells and whistles. """ return Attribute( name=name, default=default, validator=validator, repr=repr, cmp=cmp, hash=hash, init=init ) class TestSimpleClass(object): """ Tests for the testing helper function `make_class`. """ def test_returns_class(self): """ Returns a class object. """ assert type is simple_class().__class__ def returns_distinct_classes(self): """ Each call returns a completely new class. """ assert simple_class() is not simple_class()