424 lines
16 KiB
Python
424 lines
16 KiB
Python
import unittest
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from binascii import hexlify, unhexlify
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from itertools import cycle
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from lbry.testcase import AsyncioTestCase
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from lbry.wallet.client.constants import CENT, COIN, NULL_HASH32
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from lbry.wallet.client.wallet import Wallet
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from lbry.wallet.ledger import MainNetLedger
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from lbry.wallet.transaction import Transaction, Output, Input
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NULL_HASH = b'\x00'*32
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FEE_PER_BYTE = 50
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FEE_PER_CHAR = 200000
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def get_output(amount=CENT, pubkey_hash=NULL_HASH32, height=-2):
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return Transaction(height=height) \
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.add_outputs([Output.pay_pubkey_hash(amount, pubkey_hash)]) \
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.outputs[0]
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def get_input(amount=CENT, pubkey_hash=NULL_HASH):
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return Input.spend(get_output(amount, pubkey_hash))
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def get_transaction(txo=None):
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return Transaction() \
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.add_inputs([get_input()]) \
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.add_outputs([txo or Output.pay_pubkey_hash(CENT, NULL_HASH32)])
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def get_claim_transaction(claim_name, claim=b''):
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return get_transaction(
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Output.pay_claim_name_pubkey_hash(CENT, claim_name, claim, NULL_HASH32)
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)
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class TestSizeAndFeeEstimation(AsyncioTestCase):
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async def asyncSetUp(self):
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self.ledger = MainNetLedger({
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'db': MainNetLedger.database_class(':memory:'),
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'headers': MainNetLedger.headers_class(':memory:')
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})
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await self.ledger.db.open()
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async def asyncTearDown(self):
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await self.ledger.db.close()
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def test_output_size_and_fee(self):
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txo = get_output()
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self.assertEqual(txo.size, 46)
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self.assertEqual(txo.get_fee(self.ledger), 46 * FEE_PER_BYTE)
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claim_name = 'verylongname'
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tx = get_claim_transaction(claim_name, b'0'*4000)
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base_size = tx.size - tx.inputs[0].size - tx.outputs[0].size
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txo = tx.outputs[0]
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self.assertEqual(tx.size, 4225)
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self.assertEqual(tx.base_size, base_size)
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self.assertEqual(txo.size, 4067)
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self.assertEqual(txo.get_fee(self.ledger), len(claim_name) * FEE_PER_CHAR)
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# fee based on total bytes is the larger fee
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claim_name = 'a'
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tx = get_claim_transaction(claim_name, b'0'*4000)
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base_size = tx.size - tx.inputs[0].size - tx.outputs[0].size
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txo = tx.outputs[0]
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self.assertEqual(tx.size, 4214)
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self.assertEqual(tx.base_size, base_size)
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self.assertEqual(txo.size, 4056)
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self.assertEqual(txo.get_fee(self.ledger), txo.size * FEE_PER_BYTE)
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def test_input_size_and_fee(self):
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txi = get_input()
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self.assertEqual(txi.size, 148)
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self.assertEqual(txi.get_fee(self.ledger), 148 * FEE_PER_BYTE)
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def test_transaction_size_and_fee(self):
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tx = get_transaction()
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self.assertEqual(tx.size, 204)
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self.assertEqual(tx.base_size, tx.size - tx.inputs[0].size - tx.outputs[0].size)
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self.assertEqual(tx.get_base_fee(self.ledger), FEE_PER_BYTE * tx.base_size)
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class TestAccountBalanceImpactFromTransaction(unittest.TestCase):
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def test_is_my_account_not_set(self):
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tx = get_transaction()
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with self.assertRaisesRegex(ValueError, "Cannot access net_account_balance"):
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_ = tx.net_account_balance
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tx.inputs[0].txo_ref.txo.is_my_account = True
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with self.assertRaisesRegex(ValueError, "Cannot access net_account_balance"):
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_ = tx.net_account_balance
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tx.outputs[0].is_my_account = True
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# all inputs/outputs are set now so it should work
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_ = tx.net_account_balance
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def test_paying_from_my_account_to_other_account(self):
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tx = Transaction() \
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.add_inputs([get_input(300*CENT)]) \
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.add_outputs([get_output(190*CENT, NULL_HASH),
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get_output(100*CENT, NULL_HASH)])
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tx.inputs[0].txo_ref.txo.is_my_account = True
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tx.outputs[0].is_my_account = False
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tx.outputs[1].is_my_account = True
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self.assertEqual(tx.net_account_balance, -200*CENT)
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def test_paying_from_other_account_to_my_account(self):
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tx = Transaction() \
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.add_inputs([get_input(300*CENT)]) \
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.add_outputs([get_output(190*CENT, NULL_HASH),
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get_output(100*CENT, NULL_HASH)])
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tx.inputs[0].txo_ref.txo.is_my_account = False
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tx.outputs[0].is_my_account = True
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tx.outputs[1].is_my_account = False
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self.assertEqual(tx.net_account_balance, 190*CENT)
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def test_paying_from_my_account_to_my_account(self):
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tx = Transaction() \
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.add_inputs([get_input(300*CENT)]) \
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.add_outputs([get_output(190*CENT, NULL_HASH),
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get_output(100*CENT, NULL_HASH)])
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tx.inputs[0].txo_ref.txo.is_my_account = True
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tx.outputs[0].is_my_account = True
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tx.outputs[1].is_my_account = True
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self.assertEqual(tx.net_account_balance, -10*CENT) # lost to fee
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class TestTransactionSerialization(unittest.TestCase):
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def test_genesis_transaction(self):
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raw = unhexlify(
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"01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff1f0"
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"4ffff001d010417696e736572742074696d657374616d7020737472696e67ffffffff01000004bfc91b8e"
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"001976a914345991dbf57bfb014b87006acdfafbfc5fe8292f88ac00000000"
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)
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tx = Transaction(raw)
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self.assertEqual(tx.version, 1)
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self.assertEqual(tx.locktime, 0)
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self.assertEqual(len(tx.inputs), 1)
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self.assertEqual(len(tx.outputs), 1)
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coinbase = tx.inputs[0]
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self.assertTrue(coinbase.txo_ref.is_null)
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self.assertEqual(coinbase.txo_ref.position, 0xFFFFFFFF)
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self.assertEqual(coinbase.sequence, 0xFFFFFFFF)
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self.assertIsNotNone(coinbase.coinbase)
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self.assertIsNone(coinbase.script)
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self.assertEqual(
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hexlify(coinbase.coinbase),
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b'04ffff001d010417696e736572742074696d657374616d7020737472696e67'
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)
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out = tx.outputs[0]
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self.assertEqual(out.amount, 40000000000000000)
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self.assertEqual(out.position, 0)
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self.assertTrue(out.script.is_pay_pubkey_hash)
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self.assertFalse(out.script.is_pay_script_hash)
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self.assertFalse(out.script.is_claim_involved)
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tx._reset()
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self.assertEqual(tx.raw, raw)
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def test_coinbase_transaction(self):
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raw = unhexlify(
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"01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff200"
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"34d520504f89ac55a086032d217bf0700000d2f6e6f64655374726174756d2f0000000001a03489850800"
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"00001976a914cfab870d6deea54ca94a41912a75484649e52f2088ac00000000"
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)
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tx = Transaction(raw)
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self.assertEqual(tx.version, 1)
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self.assertEqual(tx.locktime, 0)
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self.assertEqual(len(tx.inputs), 1)
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self.assertEqual(len(tx.outputs), 1)
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coinbase = tx.inputs[0]
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self.assertTrue(coinbase.txo_ref.is_null)
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self.assertEqual(coinbase.txo_ref.position, 0xFFFFFFFF)
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self.assertEqual(coinbase.sequence, 0)
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self.assertIsNotNone(coinbase.coinbase)
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self.assertIsNone(coinbase.script)
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self.assertEqual(
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hexlify(coinbase.coinbase),
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b'034d520504f89ac55a086032d217bf0700000d2f6e6f64655374726174756d2f'
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)
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out = tx.outputs[0]
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self.assertEqual(out.amount, 36600100000)
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self.assertEqual(out.position, 0)
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self.assertTrue(out.script.is_pay_pubkey_hash)
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self.assertFalse(out.script.is_pay_script_hash)
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self.assertFalse(out.script.is_claim_involved)
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tx._reset()
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self.assertEqual(tx.raw, raw)
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def test_claim_transaction(self):
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raw = unhexlify(
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"01000000012433e1b327603843b083344dbae5306ff7927f87ebbc5ae9eb50856c5b53fd1d000000006a4"
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"7304402201a91e1023d11c383a11e26bf8f9034087b15d8ada78fa565e0610455ffc8505e0220038a63a6"
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"ecb399723d4f1f78a20ddec0a78bf8fb6c75e63e166ef780f3944fbf0121021810150a2e4b088ec51b20c"
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"be1b335962b634545860733367824d5dc3eda767dffffffff028096980000000000fdff00b50463617473"
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"4cdc080110011a7808011230080410011a084d616361726f6e6922002a003214416c6c207269676874732"
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"072657365727665642e38004a0052005a001a42080110011a30add80aaf02559ba09853636a0658c42b72"
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"7cb5bb4ba8acedb4b7fe656065a47a31878dbf9912135ddb9e13806cc1479d220a696d6167652f6a70656"
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"72a5c080110031a404180cc0fa4d3839ee29cca866baed25fafb43fca1eb3b608ee889d351d3573d042c7"
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"b83e2e643db0d8e062a04e6e9ae6b90540a2f95fe28638d0f18af4361a1c2214f73de93f4299fb32c32f9"
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"49e02198a8e91101abd6d7576a914be16e4b0f9bd8f6d47d02b3a887049c36d3b84cb88ac0cd2520b0000"
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"00001976a914f521178feb733a719964e1da4a9efb09dcc39cfa88ac00000000"
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)
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tx = Transaction(raw)
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self.assertEqual(tx.id, '666c3d15de1d6949a4fe717126c368e274b36957dce29fd401138c1e87e92a62')
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self.assertEqual(tx.version, 1)
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self.assertEqual(tx.locktime, 0)
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self.assertEqual(len(tx.inputs), 1)
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self.assertEqual(len(tx.outputs), 2)
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txin = tx.inputs[0]
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self.assertEqual(
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txin.txo_ref.id,
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'1dfd535b6c8550ebe95abceb877f92f76f30e5ba4d3483b043386027b3e13324:0'
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)
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self.assertEqual(txin.txo_ref.position, 0)
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self.assertEqual(txin.sequence, 0xFFFFFFFF)
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self.assertIsNone(txin.coinbase)
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self.assertEqual(txin.script.template.name, 'pubkey_hash')
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self.assertEqual(
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hexlify(txin.script.values['pubkey']),
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b'021810150a2e4b088ec51b20cbe1b335962b634545860733367824d5dc3eda767d'
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)
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self.assertEqual(
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hexlify(txin.script.values['signature']),
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b'304402201a91e1023d11c383a11e26bf8f9034087b15d8ada78fa565e0610455ffc8505e0220038a63a6'
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b'ecb399723d4f1f78a20ddec0a78bf8fb6c75e63e166ef780f3944fbf01'
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)
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# Claim
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out0 = tx.outputs[0]
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self.assertEqual(out0.amount, 10000000)
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self.assertEqual(out0.position, 0)
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self.assertTrue(out0.script.is_pay_pubkey_hash)
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self.assertTrue(out0.script.is_claim_name)
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self.assertTrue(out0.script.is_claim_involved)
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self.assertEqual(out0.script.values['claim_name'], b'cats')
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self.assertEqual(
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hexlify(out0.script.values['pubkey_hash']),
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b'be16e4b0f9bd8f6d47d02b3a887049c36d3b84cb'
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)
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# Change
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out1 = tx.outputs[1]
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self.assertEqual(out1.amount, 189977100)
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self.assertEqual(out1.position, 1)
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self.assertTrue(out1.script.is_pay_pubkey_hash)
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self.assertFalse(out1.script.is_claim_involved)
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self.assertEqual(
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hexlify(out1.script.values['pubkey_hash']),
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b'f521178feb733a719964e1da4a9efb09dcc39cfa'
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)
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tx._reset()
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self.assertEqual(tx.raw, raw)
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class TestTransactionSigning(AsyncioTestCase):
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async def asyncSetUp(self):
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self.ledger = MainNetLedger({
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'db': MainNetLedger.database_class(':memory:'),
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'headers': MainNetLedger.headers_class(':memory:')
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})
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await self.ledger.db.open()
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async def asyncTearDown(self):
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await self.ledger.db.close()
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async def test_sign(self):
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account = self.ledger.account_class.from_dict(
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self.ledger, Wallet(), {
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"seed":
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"carbon smart garage balance margin twelve chest sword toas"
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"t envelope bottom stomach absent"
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}
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)
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await account.ensure_address_gap()
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address1, address2 = await account.receiving.get_addresses(limit=2)
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pubkey_hash1 = self.ledger.address_to_hash160(address1)
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pubkey_hash2 = self.ledger.address_to_hash160(address2)
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tx = Transaction() \
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.add_inputs([Input.spend(get_output(int(2*COIN), pubkey_hash1))]) \
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.add_outputs([Output.pay_pubkey_hash(int(1.9*COIN), pubkey_hash2)])
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await tx.sign([account])
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self.assertEqual(
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hexlify(tx.inputs[0].script.values['signature']),
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b'304402200dafa26ad7cf38c5a971c8a25ce7d85a076235f146126762296b1223c42ae21e022020ef9eeb8'
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b'398327891008c5c0be4357683f12cb22346691ff23914f457bf679601'
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)
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class TransactionIOBalancing(AsyncioTestCase):
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async def asyncSetUp(self):
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self.ledger = MainNetLedger({
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'db': MainNetLedger.database_class(':memory:'),
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'headers': MainNetLedger.headers_class(':memory:')
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})
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await self.ledger.db.open()
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self.account = self.ledger.account_class.from_dict(
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self.ledger, Wallet(), {
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"seed": "carbon smart garage balance margin twelve chest sword "
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"toast envelope bottom stomach absent"
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}
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)
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addresses = await self.account.ensure_address_gap()
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self.pubkey_hash = [self.ledger.address_to_hash160(a) for a in addresses]
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self.hash_cycler = cycle(self.pubkey_hash)
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async def asyncTearDown(self):
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await self.ledger.db.close()
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def txo(self, amount, address=None):
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return get_output(int(amount*COIN), address or next(self.hash_cycler))
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def txi(self, txo):
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return Transaction.input_class.spend(txo)
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def tx(self, inputs, outputs):
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return Transaction.create(inputs, outputs, [self.account], self.account)
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async def create_utxos(self, amounts):
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utxos = [self.txo(amount) for amount in amounts]
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self.funding_tx = Transaction(is_verified=True) \
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.add_inputs([self.txi(self.txo(sum(amounts)+0.1))]) \
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.add_outputs(utxos)
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await self.ledger.db.insert_transaction(self.funding_tx)
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for utxo in utxos:
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await self.ledger.db.save_transaction_io(
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self.funding_tx,
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self.ledger.hash160_to_address(utxo.script.values['pubkey_hash']),
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utxo.script.values['pubkey_hash'], ''
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)
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return utxos
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@staticmethod
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def inputs(tx):
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return [round(i.amount/COIN, 2) for i in tx.inputs]
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@staticmethod
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def outputs(tx):
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return [round(o.amount/COIN, 2) for o in tx.outputs]
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async def test_basic_use_cases(self):
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self.ledger.fee_per_byte = int(.01*CENT)
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# available UTXOs for filling missing inputs
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utxos = await self.create_utxos([
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1, 1, 3, 5, 10
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])
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# pay 3 coins (3.02 w/ fees)
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tx = await self.tx(
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[], # inputs
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[self.txo(3)] # outputs
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)
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# best UTXO match is 5 (as UTXO 3 will be short 0.02 to cover fees)
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self.assertListEqual(self.inputs(tx), [5])
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# a change of 1.98 is added to reach balance
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self.assertListEqual(self.outputs(tx), [3, 1.98])
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await self.ledger.release_outputs(utxos)
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# pay 2.98 coins (3.00 w/ fees)
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tx = await self.tx(
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[], # inputs
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[self.txo(2.98)] # outputs
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)
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# best UTXO match is 3 and no change is needed
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self.assertListEqual(self.inputs(tx), [3])
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self.assertListEqual(self.outputs(tx), [2.98])
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await self.ledger.release_outputs(utxos)
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# supplied input and output, but input is not enough to cover output
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tx = await self.tx(
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[self.txi(self.txo(10))], # inputs
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[self.txo(11)] # outputs
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)
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# additional input is chosen (UTXO 3)
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self.assertListEqual([10, 3], self.inputs(tx))
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# change is now needed to consume extra input
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self.assertListEqual([11, 1.96], self.outputs(tx))
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await self.ledger.release_outputs(utxos)
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# liquidating a UTXO
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tx = await self.tx(
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[self.txi(self.txo(10))], # inputs
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[] # outputs
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)
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self.assertListEqual([10], self.inputs(tx))
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# missing change added to consume the amount
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self.assertListEqual([9.98], self.outputs(tx))
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await self.ledger.release_outputs(utxos)
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# liquidating at a loss, requires adding extra inputs
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tx = await self.tx(
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[self.txi(self.txo(0.01))], # inputs
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[] # outputs
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)
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# UTXO 1 is added to cover some of the fee
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self.assertListEqual([0.01, 1], self.inputs(tx))
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# change is now needed to consume extra input
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self.assertListEqual([0.97], self.outputs(tx))
|