def test_subset():
ns = Namespace(foo=1, bar=2, baz=3)
attrs = {'foo', 'bar'}
ss = subset(ns, attrs)
assert ss.foo == 1
assert ss.bar == 2
assert 'baz' not in ss
def test_subset_type():
class Foo(object):
def __init__(self, **kwargs):
pass
ns = Namespace(foo=1, bar=2, baz=3)
ss = subset(ns, ['foo', 'bar'], Foo)
assert isinstance(ss, Foo)
