Function test_sendpay

tests/test_pay.py:561–697

(node_factory)

def test_sendpay(node_factory):
    l1, l2 = node_factory.line_graph(2, fundamount=10**6)

    amt = 200000000
    inv = l2.rpc.invoice(amt, 'testpayment2', 'desc')
    rhash = inv['payment_hash']

    def invoice_unpaid(dst, label):
        invoices = dst.rpc.listinvoices(label)['invoices']
        return len(invoices) == 1 and invoices[0]['status'] == 'unpaid'

    routestep = {
        'amount_msat': amt,
        'id': l2.info['id'],
        'delay': 5,
        'channel': first_scid(l1, l2)
    }

    # Insufficient funds.
    with pytest.raises(RpcError):
        rs = copy.deepcopy(routestep)
        rs['amount_msat'] = rs['amount_msat'] - 1
        l1.rpc.sendpay([rs], rhash, payment_secret=inv['payment_secret'])
        l1.rpc.waitsendpay(rhash)
    assert invoice_unpaid(l2, 'testpayment2')

    # Gross overpayment (more than factor of 2)
    with pytest.raises(RpcError):
        rs = copy.deepcopy(routestep)
        rs['amount_msat'] = rs['amount_msat'] * 2 + 1
        l1.rpc.sendpay([rs], rhash, payment_secret=inv['payment_secret'])
        l1.rpc.waitsendpay(rhash)
    assert invoice_unpaid(l2, 'testpayment2')

    # Insufficient delay.
    with pytest.raises(RpcError):
        rs = copy.deepcopy(routestep)
        rs['delay'] = rs['delay'] - 2
        l1.rpc.sendpay([rs], rhash, payment_secret=inv['payment_secret'])
        l1.rpc.waitsendpay(rhash)
    assert invoice_unpaid(l2, 'testpayment2')

    # Bad ID.
    l1.rpc.check_request_schemas = False
    with pytest.raises(RpcError):
        rs = copy.deepcopy(routestep)
        rs['id'] = '00000000000000000000000000000000'
        l1.rpc.sendpay([rs], rhash, payment_secret=inv['payment_secret'])
    assert invoice_unpaid(l2, 'testpayment2')
    l1.rpc.check_request_schemas = True

    # Bad payment_secret
    l1.rpc.sendpay([routestep], rhash, payment_secret="00" * 32)
    with pytest.raises(RpcError):
        l1.rpc.waitsendpay(rhash)
    assert invoice_unpaid(l2, 'testpayment2')

    # Missing payment_secret