def test_absolve(self):
right = either.Right(1)
left = either.Left('error')
right_effect = effect.success(right)
left_effect = effect.success(left)
assert effect.absolve(right_effect).run(None) == 1
with pytest.raises(Exception):
# todo
effect.absolve(left_effect).run(None)
def test_try_modify(self):
int_ref = ref.Ref(0)
int_ref.try_modify(lambda _: either.Left('')).either().run(None)
assert int_ref.value == 0
int_ref.try_modify(lambda _: either.Right(1)).run(None)
assert int_ref.value == 1
def test_either(self):
success = effect.success(1)
error = effect.error('error')
assert success.either().run(None) == either.Right(1)
error.either().run(None) == either.Left('error')
def test_retry(self):
s = schedule.recurs(2, schedule.spaced(timedelta(seconds=1)))
assert (effect.error('whoops').retry(s).either().run(MockModules()) ==
either.Left(('whoops', 'whoops')))