Function test_downgrade_bias

tests/test_downgrade.py:101–113

If we have created as node bias, we *can* downgrade this version.

(node_factory, executor)

def test_downgrade_bias(node_factory, executor):
    """If we have created as node bias, we *can* downgrade this version."""
    l1, l2 = node_factory.line_graph(2, opts={'may_reconnect': True, 'old_hsmsecret': True}, wait_for_announce=True)

    l1.rpc.askrene_bias_node('xpay', l2.info['id'], 'in', 1)
    cmd_line = downgrade_cmdline(l1)

    l1.stop()

    p = subprocess.Popen(cmd_line, stdout=subprocess.DEVNULL,
                         stderr=subprocess.PIPE)
    _, err = p.communicate(timeout=TIMEOUT)
    assert p.returncode == 0