def test_accepts_provided_access_key(self):
key = 'abcd-1234-5678'
session = SauceSession()
session.access_key = key
assert session.access_key == key
def test_raises_exception_if_no_access_key_set(self):
session = SauceSession()
session.access_key = None
with pytest.raises(KeyError):
session.start()