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blind: add functional test that attempting to spend more than 256 inputs fails "gracefully"

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This commit is contained in:
Andrew Poelstra 2021-06-26 18:12:23 +00:00
parent ba538cbe2a
commit f7e1fb6708
1 changed files with 29 additions and 0 deletions
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29
test/functional/rpc_fundrawtransaction.py
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@ -95,6 +95,7 @@ class RawTransactionsTest(BitcoinTestFramework):
self.test_address_reuse()
self.test_option_subtract_fee_from_outputs()
self.test_subtract_fee_with_presets()
self.test_surjectionproof_many_inputs()
def test_change_position(self):
"""Ensure setting changePosition in fundraw with an exact match is handled properly."""
@ -953,5 +954,33 @@ class RawTransactionsTest(BitcoinTestFramework):
signedtx = self.nodes[0].signrawtransactionwithwallet(blindedtx)
self.nodes[0].sendrawtransaction(signedtx['hex'])
def test_surjectionproof_many_inputs(self):
self.log.info("Test fundrawtx with more than 256 inputs")
self.nodes[0].createwallet("surjection")
wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
recipient = self.nodes[0].get_wallet_rpc("surjection")
# Make 500 0.1 BTC outputs...
for j in range(0, 10):
outputs = {}
for i in range(0, 50):
outputs[recipient.getnewaddress()] = 0.1
wallet.sendmany("", outputs)
self.nodes[0].generate(10)
# ...and try to send them all in one transaction
# This should fail but we should not see an assertation failure.
rawtx = recipient.createrawtransaction([], {wallet.getnewaddress(): 49.99})
assert_raises_rpc_error(-4, "Unable to blind the transaction properly. This should not happen.", recipient.fundrawtransaction, rawtx)
# Try to send them across two transactions. This should succeed.
rawtx = recipient.createrawtransaction([], {wallet.getnewaddress(): 24.99})
for i in range(0, 2):
fundedtx = recipient.fundrawtransaction(rawtx)
blindedtx = recipient.blindrawtransaction(fundedtx['hex'])
signedtx = recipient.signrawtransactionwithwallet(blindedtx)
self.nodes[0].sendrawtransaction(signedtx['hex'])
if __name__ == '__main__':
RawTransactionsTest().main()