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import pytest
import keyring.backends.chainer
from keyring import backend
@pytest.fixture
def two_keyrings(monkeypatch):
def get_two():
class Keyring1(backend.KeyringBackend):
priority = 1
def get_password(self, system, user):
return f'ring1-{system}-{user}'
def set_password(self, system, user, password):
pass
class Keyring2(backend.KeyringBackend):
priority = 2
def get_password(self, system, user):
return f'ring2-{system}-{user}'
def set_password(self, system, user, password):
raise NotImplementedError()
return Keyring1(), Keyring2()
monkeypatch.setattr('keyring.backend.get_all_keyring', get_two)
class TestChainer:
def test_chainer_gets_from_highest_priority(self, two_keyrings):
chainer = keyring.backends.chainer.ChainerBackend()
pw = chainer.get_password('alpha', 'bravo')
assert pw == 'ring2-alpha-bravo'
def test_chainer_defers_to_fail(self, monkeypatch):
"""
The Chainer backend should defer to the Fail backend when there are
no backends to be chained.
"""
monkeypatch.setattr('keyring.backend.get_all_keyring', tuple)
assert keyring.backend.by_priority(
keyring.backends.chainer.ChainerBackend
) < keyring.backend.by_priority(keyring.backends.fail.Keyring)
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