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pytest: test reserve and unreserve.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Rusty Russell
parent
be17a9392f
commit
4ee527a59c
@ -1107,22 +1107,19 @@ class LightningRpc(UnixDomainSocketRpc):
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}
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return self.call("txsend", payload)
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def reserveinputs(self, outputs, feerate=None, minconf=None, utxos=None):
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def reserveinputs(self, psbt, exclusive=True):
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"""
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Reserve UTXOs and return a psbt for a 'stub' transaction that
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spends the reserved UTXOs.
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Reserve any inputs in this psbt.
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"""
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payload = {
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"outputs": outputs,
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"feerate": feerate,
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"minconf": minconf,
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"utxos": utxos,
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"psbt": psbt,
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"exclusive": exclusive,
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}
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return self.call("reserveinputs", payload)
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def unreserveinputs(self, psbt):
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"""
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Unreserve UTXOs that were previously reserved.
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Unreserve (or reduce reservation) on any UTXOs in this psbt were previously reserved.
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"""
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payload = {
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"psbt": psbt,
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@ -438,130 +438,52 @@ def test_txprepare(node_factory, bitcoind, chainparams):
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def test_reserveinputs(node_factory, bitcoind, chainparams):
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"""
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Reserve inputs is basically the same as txprepare, with the
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slight exception that 'reserveinputs' doesn't keep the
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unsent transaction around
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"""
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amount = 1000000
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total_outs = 12
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l1 = node_factory.get_node(feerates=(7500, 7500, 7500, 7500))
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addr = chainparams['example_addr']
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outputs = []
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# Add a medley of funds to withdraw later, bech32 + p2sh-p2wpkh
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for i in range(total_outs // 2):
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bitcoind.rpc.sendtoaddress(l1.rpc.newaddr()['bech32'],
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txid = bitcoind.rpc.sendtoaddress(l1.rpc.newaddr()['bech32'],
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amount / 10**8)
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bitcoind.rpc.sendtoaddress(l1.rpc.newaddr('p2sh-segwit')['p2sh-segwit'],
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outputs.append((txid, bitcoind.rpc.gettransaction(txid)['details'][0]['vout']))
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txid = bitcoind.rpc.sendtoaddress(l1.rpc.newaddr('p2sh-segwit')['p2sh-segwit'],
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amount / 10**8)
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outputs.append((txid, bitcoind.rpc.gettransaction(txid)['details'][0]['vout']))
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bitcoind.generate_block(1)
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wait_for(lambda: len(l1.rpc.listfunds()['outputs']) == total_outs)
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utxo_count = 8
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sent = Decimal('0.01') * (utxo_count - 1)
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reserved = l1.rpc.reserveinputs(outputs=[{addr: Millisatoshi(amount * (utxo_count - 1) * 1000)}])
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assert reserved['feerate_per_kw'] == 7500
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psbt = bitcoind.rpc.decodepsbt(reserved['psbt'])
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out_found = False
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assert not any(o['reserved'] for o in l1.rpc.listfunds()['outputs'])
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assert len(psbt['inputs']) == utxo_count
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outputs = l1.rpc.listfunds()['outputs']
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assert len([x for x in outputs if not x['reserved']]) == total_outs - utxo_count
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assert len([x for x in outputs if x['reserved']]) == utxo_count
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total_outs -= utxo_count
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saved_input = psbt['tx']['vin'][0]
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# Try reserving one at a time.
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for out in outputs:
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psbt = bitcoind.rpc.createpsbt([{'txid': out[0], 'vout': out[1]}], [])
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l1.rpc.reserveinputs(psbt)
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# We should have two outputs
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for vout in psbt['tx']['vout']:
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if chainparams['elements'] and vout['scriptPubKey']['type'] == 'fee':
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continue
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if vout['scriptPubKey']['addresses'][0] == addr:
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assert vout['value'] == sent
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out_found = True
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assert out_found
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assert all(o['reserved'] for o in l1.rpc.listfunds()['outputs'])
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# Do it again, but for too many inputs
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utxo_count = 12 - utxo_count + 1
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sent = Decimal('0.01') * (utxo_count - 1)
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with pytest.raises(RpcError, match=r"Cannot afford transaction"):
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reserved = l1.rpc.reserveinputs(outputs=[{addr: Millisatoshi(amount * (utxo_count - 1) * 1000)}])
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# Unreserve as a batch.
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psbt = bitcoind.rpc.createpsbt([{'txid': out[0], 'vout': out[1]} for out in outputs], [])
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l1.rpc.unreserveinputs(psbt)
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assert not any(o['reserved'] for o in l1.rpc.listfunds()['outputs'])
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utxo_count -= 1
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sent = Decimal('0.01') * (utxo_count - 1)
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reserved = l1.rpc.reserveinputs(outputs=[{addr: Millisatoshi(amount * (utxo_count - 1) * 1000)}], feerate='10000perkw')
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# Reserve twice fails unless exclusive.
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l1.rpc.reserveinputs(psbt)
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with pytest.raises(RpcError, match=r"already reserved"):
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l1.rpc.reserveinputs(psbt)
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l1.rpc.reserveinputs(psbt, False)
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l1.rpc.unreserveinputs(psbt)
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assert all(o['reserved'] for o in l1.rpc.listfunds()['outputs'])
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assert reserved['feerate_per_kw'] == 10000
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psbt = bitcoind.rpc.decodepsbt(reserved['psbt'])
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assert len(psbt['inputs']) == utxo_count
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outputs = l1.rpc.listfunds()['outputs']
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assert len([x for x in outputs if not x['reserved']]) == total_outs - utxo_count == 0
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assert len([x for x in outputs if x['reserved']]) == 12
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# No more available
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with pytest.raises(RpcError, match=r"Cannot afford transaction"):
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reserved = l1.rpc.reserveinputs(outputs=[{addr: Millisatoshi(amount * 1)}], feerate='253perkw')
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# Unreserve three, from different psbts
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unreserve_utxos = [
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{
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'txid': saved_input['txid'],
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'vout': saved_input['vout'],
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'sequence': saved_input['sequence']
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}, {
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'txid': psbt['tx']['vin'][0]['txid'],
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'vout': psbt['tx']['vin'][0]['vout'],
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'sequence': psbt['tx']['vin'][0]['sequence']
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}, {
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'txid': psbt['tx']['vin'][1]['txid'],
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'vout': psbt['tx']['vin'][1]['vout'],
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'sequence': psbt['tx']['vin'][1]['sequence']
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}]
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unreserve_psbt = bitcoind.rpc.createpsbt(unreserve_utxos, [])
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unreserved = l1.rpc.unreserveinputs(unreserve_psbt)
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assert all([x['unreserved'] for x in unreserved['outputs']])
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outputs = l1.rpc.listfunds()['outputs']
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assert len([x for x in outputs if not x['reserved']]) == len(unreserved['outputs'])
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for i in range(len(unreserved['outputs'])):
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un = unreserved['outputs'][i]
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u_utxo = unreserve_utxos[i]
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assert un['txid'] == u_utxo['txid'] and un['vout'] == u_utxo['vout'] and un['unreserved']
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# Try unreserving the same utxos again, plus one that's not included
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# We expect this to be a no-op.
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unreserve_utxos.append({'txid': 'b' * 64, 'vout': 0, 'sequence': 0})
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unreserve_psbt = bitcoind.rpc.createpsbt(unreserve_utxos, [])
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unreserved = l1.rpc.unreserveinputs(unreserve_psbt)
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assert not any([x['unreserved'] for x in unreserved['outputs']])
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for un in unreserved['outputs']:
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assert not un['unreserved']
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assert len([x for x in l1.rpc.listfunds()['outputs'] if not x['reserved']]) == 3
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# passing in an empty string should fail
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with pytest.raises(RpcError, match=r"should be a PSBT, not "):
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l1.rpc.unreserveinputs('')
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# reserve one of the utxos that we just unreserved
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utxos = []
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utxos.append(saved_input['txid'] + ":" + str(saved_input['vout']))
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reserved = l1.rpc.reserveinputs([{addr: Millisatoshi(amount * 0.5 * 1000)}], feerate='253perkw', utxos=utxos)
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assert len([x for x in l1.rpc.listfunds()['outputs'] if not x['reserved']]) == 2
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psbt = bitcoind.rpc.decodepsbt(reserved['psbt'])
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assert len(psbt['inputs']) == 1
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vin = psbt['tx']['vin'][0]
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assert vin['txid'] == saved_input['txid'] and vin['vout'] == saved_input['vout']
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# reserve them all!
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reserved = l1.rpc.reserveinputs([{addr: 'all'}])
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outputs = l1.rpc.listfunds()['outputs']
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assert len([x for x in outputs if not x['reserved']]) == 0
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assert len([x for x in outputs if x['reserved']]) == 12
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# FIXME: restart the node, nothing will remain reserved
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# Stays reserved across restarts.
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l1.restart()
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assert len(l1.rpc.listfunds()['outputs']) == 12
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assert all(o['reserved'] for o in l1.rpc.listfunds()['outputs'])
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# Final unreserve works.
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l1.rpc.unreserveinputs(psbt)
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assert not any(o['reserved'] for o in l1.rpc.listfunds()['outputs'])
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@pytest.mark.xfail(strict=True)
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