erc20-demurrage-token/python/tests/test_redistribution.py

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# standard imports
import os
import unittest
import json
import logging
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# external imports
from chainlib.eth.constant import ZERO_ADDRESS
from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.tx import receipt
from chainlib.eth.block import block_latest
from chainlib.eth.address import to_checksum_address
from hexathon import (
strip_0x,
add_0x,
)
# local imports
from erc20_demurrage_token import DemurrageToken
# test imports
from tests.base import TestDemurrageDefault
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logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
testdir = os.path.dirname(__file__)
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class TestRedistribution(TestDemurrageDefault):
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def test_debug_periods(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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o = c.actual_period(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
pactual = c.parse_actual_period(r)
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o = c.period_start(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
pstart = c.parse_actual_period(r)
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o = c.period_duration(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
pduration = c.parse_actual_period(r)
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o = block_latest()
blocknumber = self.rpc.do(o)
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logg.debug('actual {} start {} duration {} blocknumber {}'.format(pactual, pstart, pduration, blocknumber))
# TODO: check receipt log outputs
def test_redistribution_storage(self):
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nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000f424000000000000000000000000000000000001')
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000000)
r = self.rpc.do(o)
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[2], 1000000)
r = self.rpc.do(o)
external_address = to_checksum_address('0x' + os.urandom(20).hex())
nonce_oracle = RPCNonceOracle(self.accounts[2], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[2], external_address, 1000000)
r = self.rpc.do(o)
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[1], external_address, 999999)
r = self.rpc.do(o)
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self.backend.time_travel(self.start_time + self.period_seconds + 1)
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o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000f42400000000010000000000001e848000000001')
o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000f42400000000010000000000001e848000000001')
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 1000000)
r = self.rpc.do(o)
o = c.redistributions(self.address, 1, sender_address=self.accounts[0])
r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000ef4200000000000000000000002dc6c000000002')
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def test_redistribution_balance_on_zero_participants(self):
supply = self.default_supply
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nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], supply)
r = self.rpc.do(o)
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self.backend.time_travel(self.start_time + self.period_seconds + 1)
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(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
self.rpc.do(o)
o = receipt(tx_hash)
rcpt = self.rpc.do(o)
self.assertEqual(rcpt['status'], 1)
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(tx_hash, o) = c.change_period(self.address, self.accounts[0])
self.rpc.do(o)
o = receipt(tx_hash)
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r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
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o = c.total_supply(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
total_supply = c.parse_total_supply(r)
sink_increment = int(total_supply * (self.tax_level / 1000000))
self.assertEqual(supply, total_supply)
for l in rcpt['logs']:
if l['topics'][0] == '0xa0717e54e02bd9829db5e6e998aec0ae9de796b8d150a3cc46a92ab869697755': # event Decayed(uint256,uint256,uint256,uint256)
period = int.from_bytes(bytes.fromhex(strip_0x(l['topics'][1])), 'big')
self.assertEqual(period, 2)
b = bytes.fromhex(strip_0x(l['data']))
remainder = int.from_bytes(b, 'big')
self.assertEqual(remainder, int((1000000 - self.tax_level) * (10 ** 32)))
o = c.balance_of(self.address, self.sink_address, sender_address=self.accounts[0])
r = self.rpc.do(o)
sink_balance = c.parse_balance_of(r)
self.assertEqual(sink_balance, int(sink_increment * 0.98))
self.assertEqual(sink_balance, int(sink_increment * (1000000 - self.tax_level) / 1000000))
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
balance = c.parse_balance_of(r)
self.assertEqual(balance, supply - sink_increment)
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def test_redistribution_two_of_ten(self):
mint_amount = 100000000
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
z = 0
for i in range(10):
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[i], mint_amount)
self.rpc.do(o)
z += mint_amount
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
initial_balance = c.parse_balance_of(r)
spend_amount = 1000000
external_address = to_checksum_address('0x' + os.urandom(20).hex())
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[1], external_address, spend_amount)
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
nonce_oracle = RPCNonceOracle(self.accounts[2], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[2], external_address, spend_amount)
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
# No cheating!
nonce_oracle = RPCNonceOracle(self.accounts[3], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[3], self.accounts[3], spend_amount)
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
# No cheapskating!
nonce_oracle = RPCNonceOracle(self.accounts[4], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[4], external_address, spend_amount-1)
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
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self.backend.time_travel(self.start_time + self.period_seconds + 1)
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(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[4])
self.rpc.do(o)
(tx_hash, o) = c.change_period(self.address, self.accounts[4])
self.rpc.do(o)
o = c.balance_of(self.address, self.accounts[3], sender_address=self.accounts[0])
r = self.rpc.do(o)
bummer_balance = c.parse_balance_of(r)
self.assertEqual(bummer_balance, mint_amount - (mint_amount * (self.tax_level / 1000000)))
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logg.debug('bal {} '.format(bummer_balance))
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
bummer_balance = c.parse_balance_of(r)
spender_balance = mint_amount - spend_amount
spender_decayed_balance = int(spender_balance - (spender_balance * (self.tax_level / 1000000)))
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self.assertEqual(bummer_balance, spender_decayed_balance)
logg.debug('bal {} '.format(bummer_balance))
(tx_hash, o) = c.apply_redistribution_on_account(self.address, self.accounts[4], self.accounts[1])
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
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# logg.debug('log {}'.format(r.logs))
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(tx_hash, o) = c.apply_redistribution_on_account(self.address, self.accounts[4], self.accounts[2])
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o)
redistribution_data = c.parse_redistributions(r)
logg.debug('redist data {}'.format(redistribution_data))
o = c.account_period(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
account_period_data = c.parse_account_period(r)
logg.debug('account period {}'.format(account_period_data))
o = c.actual_period(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
actual_period = c.parse_actual_period(r)
logg.debug('period {}'.format(actual_period))
redistribution = int((z / 2) * (self.tax_level / 1000000))
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spender_new_base_balance = ((mint_amount - spend_amount) + redistribution)
spender_new_decayed_balance = int(spender_new_base_balance - (spender_new_base_balance * (self.tax_level / 1000000)))
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o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
spender_actual_balance = c.parse_balance_of(r)
logg.debug('rrr {} {}'.format(redistribution, spender_new_decayed_balance))
self.assertEqual(spender_actual_balance, spender_new_decayed_balance)
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