mirror of
git://holbrook.no/erc20-demurrage-token
synced 2024-11-05 10:06:45 +01:00
199 lines
8.4 KiB
Python
199 lines
8.4 KiB
Python
# standard imports
|
||
import os
|
||
import unittest
|
||
import json
|
||
import logging
|
||
|
||
# third-party imports
|
||
import web3
|
||
import eth_tester
|
||
import eth_abi
|
||
|
||
logging.basicConfig(level=logging.DEBUG)
|
||
logg = logging.getLogger()
|
||
|
||
logging.getLogger('web3').setLevel(logging.WARNING)
|
||
logging.getLogger('eth.vm').setLevel(logging.WARNING)
|
||
|
||
testdir = os.path.dirname(__file__)
|
||
|
||
#BLOCKTIME = 5 # seconds
|
||
TAX_LEVEL = 10000 * 2 # 2%
|
||
#PERIOD = int(60/BLOCKTIME) * 60 * 24 * 30 # month
|
||
PERIOD = 1
|
||
|
||
|
||
class Test(unittest.TestCase):
|
||
|
||
contract = None
|
||
|
||
def setUp(self):
|
||
eth_params = eth_tester.backends.pyevm.main.get_default_genesis_params({
|
||
'gas_limit': 9000000,
|
||
})
|
||
|
||
f = open(os.path.join(testdir, '../../solidity/RedistributedDemurrageToken.bin'), 'r')
|
||
self.bytecode = f.read()
|
||
f.close()
|
||
|
||
f = open(os.path.join(testdir, '../../solidity/RedistributedDemurrageToken.json'), 'r')
|
||
self.abi = json.load(f)
|
||
f.close()
|
||
|
||
backend = eth_tester.PyEVMBackend(eth_params)
|
||
self.eth_tester = eth_tester.EthereumTester(backend)
|
||
provider = web3.Web3.EthereumTesterProvider(self.eth_tester)
|
||
self.w3 = web3.Web3(provider)
|
||
self.sink_address = self.w3.eth.accounts[9]
|
||
|
||
c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
|
||
tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL * (10 ** 32), PERIOD, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
|
||
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
self.contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
|
||
|
||
self.start_block = self.w3.eth.blockNumber
|
||
b = self.w3.eth.getBlock(self.start_block)
|
||
self.start_time = b['timestamp']
|
||
|
||
|
||
def tearDown(self):
|
||
pass
|
||
|
||
|
||
def debug_periods(self):
|
||
pactual = self.contract.functions.actualPeriod().call()
|
||
pstart = self.contract.functions.periodStart().call()
|
||
pduration = self.contract.functions.periodDuration().call()
|
||
blocknumber = self.w3.eth.blockNumber;
|
||
logg.debug('actual {} start {} duration {} blocknumber {}'.format(pactual, pstart, pduration, blocknumber))
|
||
|
||
|
||
# TODO: check receipt log outputs
|
||
def test_redistribution_storage(self):
|
||
self.contract.functions.mintTo(self.w3.eth.accounts[1], 1000000).transact()
|
||
self.contract.functions.mintTo(self.w3.eth.accounts[2], 1000000).transact()
|
||
|
||
external_address = web3.Web3.toChecksumAddress('0x' + os.urandom(20).hex())
|
||
tx_hash = self.contract.functions.transfer(external_address, 1000000).transact({'from': self.w3.eth.accounts[2]})
|
||
tx_hash = self.contract.functions.transfer(external_address, 999999).transact({'from': self.w3.eth.accounts[1]})
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
logg.debug('tx before {}'.format(r))
|
||
self.assertEqual(r.status, 1)
|
||
|
||
self.eth_tester.time_travel(self.start_time + 61)
|
||
|
||
redistribution = self.contract.functions.redistributions(0).call();
|
||
self.assertEqual(redistribution.hex(), '000000000000000000000000f42400000000010000000000001e848000000001')
|
||
|
||
tx_hash = self.contract.functions.mintTo(self.w3.eth.accounts[0], 1000000).transact()
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
self.assertEqual(r.status, 1)
|
||
|
||
redistribution = self.contract.functions.redistributions(1).call()
|
||
self.assertEqual(redistribution.hex(), '000000000000000000000000ef4200000000000000000000002dc6c000000002')
|
||
|
||
|
||
def test_redistribution_balance_on_zero_participants(self):
|
||
supply = 1000000000000
|
||
tx_hash = self.contract.functions.mintTo(self.w3.eth.accounts[1], supply).transact()
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
|
||
self.eth_tester.time_travel(self.start_time + 61)
|
||
|
||
tx_hash = self.contract.functions.applyDemurrage().transact()
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
logg.debug('r {}'.format(r))
|
||
self.assertEqual(r.status, 1)
|
||
tx_hash = self.contract.functions.changePeriod().transact()
|
||
rr = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
self.assertEqual(rr.status, 1)
|
||
|
||
redistribution = self.contract.functions.redistributions(0).call();
|
||
supply = self.contract.functions.totalSupply().call()
|
||
|
||
sink_increment = int(supply * (TAX_LEVEL / 1000000))
|
||
for l in r['logs']:
|
||
if l.topics[0].hex() == '0xa0717e54e02bd9829db5e6e998aec0ae9de796b8d150a3cc46a92ab869697755': # event Decayed(uint256,uint256,uint256,uint256)
|
||
period = int.from_bytes(l.topics[1], 'big')
|
||
self.assertEqual(period, 2)
|
||
b = bytes.fromhex(l.data[2:])
|
||
remainder = int.from_bytes(b, 'big')
|
||
self.assertEqual(remainder, int((1000000 - TAX_LEVEL) * (10 ** 32)))
|
||
logg.debug('period {} remainder {}'.format(period, remainder))
|
||
|
||
sink_balance = self.contract.functions.balanceOf(self.sink_address).call()
|
||
logg.debug('{} {}'.format(sink_increment, sink_balance))
|
||
self.assertEqual(sink_balance, int(sink_increment * 0.98))
|
||
self.assertEqual(sink_balance, int(sink_increment * (1000000 - TAX_LEVEL) / 1000000))
|
||
|
||
balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
|
||
self.assertEqual(balance, supply - sink_increment)
|
||
|
||
|
||
def test_redistribution_two_of_ten(self):
|
||
mint_amount = 100000000
|
||
z = 0
|
||
for i in range(10):
|
||
self.contract.functions.mintTo(self.w3.eth.accounts[i], mint_amount).transact()
|
||
z += mint_amount
|
||
|
||
initial_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
|
||
|
||
spend_amount = 1000000
|
||
external_address = web3.Web3.toChecksumAddress('0x' + os.urandom(20).hex())
|
||
self.contract.functions.transfer(external_address, spend_amount).transact({'from': self.w3.eth.accounts[1]})
|
||
tx_hash = self.contract.functions.transfer(external_address, spend_amount).transact({'from': self.w3.eth.accounts[2]})
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
# No cheating!
|
||
self.contract.functions.transfer(self.w3.eth.accounts[3], spend_amount).transact({'from': self.w3.eth.accounts[3]})
|
||
# No cheapskating!
|
||
self.contract.functions.transfer(external_address, spend_amount-1).transact({'from': self.w3.eth.accounts[4]})
|
||
|
||
self.assertEqual(r.status, 1)
|
||
|
||
self.eth_tester.time_travel(self.start_time + 61)
|
||
|
||
self.contract.functions.applyDemurrage().transact()
|
||
self.contract.functions.changePeriod().transact()
|
||
|
||
bummer_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[3]).call()
|
||
self.assertEqual(bummer_balance, mint_amount - (mint_amount * (TAX_LEVEL / 1000000)))
|
||
logg.debug('bal {} '.format(bummer_balance))
|
||
|
||
bummer_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
|
||
spender_balance = mint_amount - spend_amount
|
||
spender_decayed_balance = int(spender_balance - (spender_balance * (TAX_LEVEL / 1000000)))
|
||
self.assertEqual(bummer_balance, spender_decayed_balance)
|
||
logg.debug('bal {} '.format(bummer_balance))
|
||
|
||
tx_hash = self.contract.functions.applyRedistributionOnAccount(self.w3.eth.accounts[1]).transact()
|
||
r = self.w3.eth.getTransactionReceipt(tx_hash)
|
||
logg.debug('log {}'.format(r.logs))
|
||
|
||
self.contract.functions.applyRedistributionOnAccount(self.w3.eth.accounts[2]).transact()
|
||
|
||
redistribution_data = self.contract.functions.redistributions(0).call()
|
||
logg.debug('redist data {}'.format(redistribution_data.hex()))
|
||
|
||
account_period_data = self.contract.functions.accountPeriod(self.w3.eth.accounts[1]).call()
|
||
logg.debug('account period {}'.format(account_period_data))
|
||
|
||
actual_period = self.contract.functions.actualPeriod().call()
|
||
logg.debug('period {}'.format(actual_period))
|
||
|
||
redistribution = int((z / 2) * (TAX_LEVEL / 1000000))
|
||
spender_new_base_balance = ((mint_amount - spend_amount) + redistribution)
|
||
spender_new_decayed_balance = int(spender_new_base_balance - (spender_new_base_balance * (TAX_LEVEL / 1000000)))
|
||
|
||
spender_actual_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
|
||
logg.debug('rrr {} {}'.format(redistribution, spender_new_decayed_balance))
|
||
|
||
self.assertEqual(spender_actual_balance, spender_new_decayed_balance)
|
||
|
||
|
||
if __name__ == '__main__':
|
||
unittest.main()
|
||
|
||
|