191 lines
7.8 KiB
Python
191 lines
7.8 KiB
Python
# standard imports
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import os
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import unittest
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import json
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import logging
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# third-party imports
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import web3
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import eth_tester
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import eth_abi
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logging.basicConfig(level=logging.DEBUG)
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logg = logging.getLogger()
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logging.getLogger('web3').setLevel(logging.WARNING)
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logging.getLogger('eth.vm').setLevel(logging.WARNING)
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testdir = os.path.dirname(__file__)
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#BLOCKTIME = 5 # seconds
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TAX_LEVEL = 10000 * 2 # 2%
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#PERIOD = int(60/BLOCKTIME) * 60 * 24 * 30 # month
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PERIOD = 20
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class Test(unittest.TestCase):
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contract = None
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def setUp(self):
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eth_params = eth_tester.backends.pyevm.main.get_default_genesis_params({
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'gas_limit': 9000000,
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})
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f = open(os.path.join(testdir, '../../solidity/RedistributedDemurrageToken.bin'), 'r')
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self.bytecode = f.read()
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f.close()
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f = open(os.path.join(testdir, '../../solidity/RedistributedDemurrageToken.json'), 'r')
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self.abi = json.load(f)
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f.close()
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backend = eth_tester.PyEVMBackend(eth_params)
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self.eth_tester = eth_tester.EthereumTester(backend)
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provider = web3.Web3.EthereumTesterProvider(self.eth_tester)
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self.w3 = web3.Web3(provider)
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self.sink_address = self.w3.eth.accounts[9]
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c = self.w3.eth.contract(abi=self.abi, bytecode=self.bytecode)
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tx_hash = c.constructor('Foo Token', 'FOO', 6, TAX_LEVEL, PERIOD, self.sink_address).transact({'from': self.w3.eth.accounts[0]})
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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self.contract = self.w3.eth.contract(abi=self.abi, address=r.contractAddress)
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self.start_block = self.w3.eth.blockNumber
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logg.debug('starting at block number {}'.format(self.start_block))
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def tearDown(self):
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pass
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def debug_periods(self):
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pactual = self.contract.functions.actualPeriod().call()
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pstart = self.contract.functions.periodStart().call()
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pduration = self.contract.functions.periodDuration().call()
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blocknumber = self.w3.eth.blockNumber;
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logg.debug('actual {} start {} duration {} blocknumber {}'.format(pactual, pstart, pduration, blocknumber))
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# TODO: check receipt log outputs
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@unittest.skip('foo')
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def test_redistribution_storage(self):
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self.contract.functions.mintTo(self.w3.eth.accounts[1], 2000).transact()
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tx_hash = self.contract.functions.transfer(self.w3.eth.accounts[2], 500).transact({'from': self.w3.eth.accounts[1]})
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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logg.debug('tx before {}'.format(r))
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self.assertEqual(r.status, 1)
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self.eth_tester.mine_blocks(PERIOD)
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redistribution = self.contract.functions.redistributions(0).call();
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self.assertEqual(redistribution.hex(), '000000000100000000000000000000000000000000000007d000000000000001')
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tx_hash = self.contract.functions.mintTo(self.w3.eth.accounts[0], 1000000).transact()
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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self.assertEqual(r.status, 1)
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redistribution = self.contract.functions.redistributions(1).call()
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self.assertEqual(redistribution.hex(), '000000000000000000000000000000000000000000000f4a1000000000000002')
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def test_redistribution_balance_on_zero_participants(self):
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supply = 1000000000000
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tx_hash = self.contract.functions.mintTo(self.w3.eth.accounts[1], supply).transact()
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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self.eth_tester.mine_blocks(PERIOD)
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tx_hash = self.contract.functions.applyTax().transact()
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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logg.debug('r {}'.format(r))
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self.assertEqual(r.status, 1)
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redistribution = self.contract.functions.redistributions(0).call();
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supply = self.contract.functions.totalSupply().call()
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sink_increment = int(supply * (TAX_LEVEL / 1000000))
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for l in r['logs']:
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if l.topics[0].hex() == '0x337db9c77a0769d770641c73e3282be23b15e2bddd830c219461dec832313389': # event Taxed(uint256,uint256)
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period = int.from_bytes(l.topics[1], 'big')
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self.assertEqual(period, 1)
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b = bytes.fromhex(l.data[2:])
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remainder = int.from_bytes(b, 'big')
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self.assertEqual(remainder, sink_increment)
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logg.debug('period {} remainder {}'.format(period, remainder))
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sink_balance = self.contract.functions.balanceOf(self.sink_address).call()
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logg.debug('{} {}'.format(sink_increment, sink_balance))
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self.assertEqual(sink_balance, int(sink_increment * 0.98))
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self.assertEqual(sink_balance, int(sink_increment * (1000000 - TAX_LEVEL) / 1000000))
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balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
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self.assertEqual(balance, supply - sink_increment)
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def test_redistribution_two_of_ten(self):
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mint_amount = 100000000
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z = 0
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for i in range(10):
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self.contract.functions.mintTo(self.w3.eth.accounts[i], mint_amount).transact()
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z += mint_amount
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initial_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
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spend_amount = 1000000
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external_address = web3.Web3.toChecksumAddress('0x' + os.urandom(20).hex())
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self.contract.functions.transfer(external_address, spend_amount).transact({'from': self.w3.eth.accounts[1]})
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tx_hash = self.contract.functions.transfer(external_address, spend_amount).transact({'from': self.w3.eth.accounts[2]})
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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# No cheating!
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self.contract.functions.transfer(self.w3.eth.accounts[3], spend_amount).transact({'from': self.w3.eth.accounts[3]})
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# Too low
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self.contract.functions.transfer(external_address, spend_amount-1).transact({'from': self.w3.eth.accounts[4]})
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self.assertEqual(r.status, 1)
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self.eth_tester.mine_blocks(PERIOD)
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self.contract.functions.applyTax().transact()
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bummer_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[3]).call()
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self.assertEqual(bummer_balance, mint_amount - (mint_amount * (TAX_LEVEL / 1000000)))
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logg.debug('bal {} '.format(bummer_balance))
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bummer_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
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spender_balance = mint_amount - spend_amount
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spender_decayed_balance = int(spender_balance - (spender_balance * (TAX_LEVEL / 1000000)))
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self.assertEqual(bummer_balance, spender_decayed_balance)
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logg.debug('bal {} '.format(bummer_balance))
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tx_hash = self.contract.functions.applyRedistributionOnAccount(self.w3.eth.accounts[1]).transact()
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r = self.w3.eth.getTransactionReceipt(tx_hash)
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logg.debug('log {}'.format(r.logs))
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self.contract.functions.applyRedistributionOnAccount(self.w3.eth.accounts[2]).transact()
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redistribution_data = self.contract.functions.redistributions(0).call()
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logg.debug('redist data {}'.format(redistribution_data.hex()))
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account_period_data = self.contract.functions.accountPeriod(self.w3.eth.accounts[1]).call()
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logg.debug('account period {}'.format(account_period_data))
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actual_period = self.contract.functions.actualPeriod().call()
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logg.debug('period {}'.format(actual_period))
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redistribution = int((z / 2) * (TAX_LEVEL / 1000000))
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spender_new_base_balance = ((mint_amount - spend_amount) + redistribution)
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spender_new_decayed_balance = int(spender_new_base_balance - (spender_new_base_balance * (TAX_LEVEL / 1000000)))
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spender_actual_balance = self.contract.functions.balanceOf(self.w3.eth.accounts[1]).call()
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logg.debug('rrr {} {}'.format(redistribution, spender_new_decayed_balance))
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self.assertEqual(spender_actual_balance, spender_new_decayed_balance)
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if __name__ == '__main__':
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unittest.main()
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