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pytest: test the invoice hook.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2019-04-11 11:45:22 +09:30
parent 43d07aaed2
commit 9c373fecb6
2 changed files with 53 additions and 0 deletions
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26
tests/plugins/reject_some_invoices.py Executable file
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@ -0,0 +1,26 @@
#!/usr/bin/env python3
"""Simple plugin to test the invoice_payment_hook.
We just refuse to let them pay invoices with preimages divisible by 16.
"""
from lightning import Plugin
plugin = Plugin()
@plugin.hook('invoice_payment')
def on_payment(payment, plugin):
print("label={}".format(payment['label']))
print("msat={}".format(payment['msat']))
print("preimage={}".format(payment['preimage']))
if payment['preimage'].endswith('0'):
# FIXME: Define this!
WIRE_TEMPORARY_NODE_FAILURE = 0x2002
return {'result': {'failure_code': WIRE_TEMPORARY_NODE_FAILURE}}
return {'result': {}}
plugin.run()

27
tests/test_plugin.py
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@ -233,3 +233,30 @@ def test_utf8_passthrough(node_factory, executor):
'utf8', 'ナンセンス 1杯']).decode('utf-8')
assert '\\u' not in out
assert out == '{\n "utf8" : "ナンセンス 1杯"\n}\n'
def test_invoice_payment_hook(node_factory):
""" l1 uses the reject-payment plugin to reject invoices with odd preimages.
"""
opts = [{}, {'plugin': 'tests/plugins/reject_some_invoices.py'}]
l1, l2 = node_factory.line_graph(2, opts=opts)
# This one works
inv1 = l2.rpc.invoice(123000, 'label', 'description', preimage='1' * 64)
l1.rpc.pay(inv1['bolt11'])
l2.daemon.wait_for_log('label=label')
l2.daemon.wait_for_log('msat=')
l2.daemon.wait_for_log('preimage=' + '1' * 64)
# This one will be rejected.
inv2 = l2.rpc.invoice(123000, 'label2', 'description', preimage='0' * 64)
with pytest.raises(RpcError):
l1.rpc.pay(inv2['bolt11'])
pstatus = l1.rpc.call('paystatus', [inv2['bolt11']])['pay'][0]
assert pstatus['attempts'][0]['failure']['data']['failcodename'] == 'WIRE_TEMPORARY_NODE_FAILURE'
l2.daemon.wait_for_log('label=label2')
l2.daemon.wait_for_log('msat=')
l2.daemon.wait_for_log('preimage=' + '0' * 64)