mirror of
git://holbrook.no/erc20-demurrage-token
synced 2024-11-26 01:26:45 +01:00
315 lines
12 KiB
Python
315 lines
12 KiB
Python
# standard imports
|
||
import os
|
||
import unittest
|
||
import json
|
||
import logging
|
||
import datetime
|
||
|
||
# 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,
|
||
block_by_number,
|
||
)
|
||
|
||
# local imports
|
||
from erc20_demurrage_token import DemurrageToken
|
||
|
||
# test imports
|
||
from erc20_demurrage_token.unittest.base import TestDemurrageDefault
|
||
|
||
logging.basicConfig(level=logging.INFO)
|
||
logg = logging.getLogger()
|
||
|
||
testdir = os.path.dirname(__file__)
|
||
|
||
#TAX_LEVEL = 2
|
||
|
||
class TestBurn(TestDemurrageDefault):
|
||
|
||
def setUp(self):
|
||
super(TestBurn, self).setUp()
|
||
|
||
#
|
||
# def publish(self, tax_level=None):
|
||
# nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||
# c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||
#
|
||
# if tax_level != None:
|
||
# self.publisher.settings.demurrage_level = tax_level * (10 ** 32)
|
||
# self.publisher.settings.sink_address = self.accounts[9]
|
||
# self.publisher.sink_address = self.accounts[9]
|
||
# super(TestBurn, self).publish(c)
|
||
|
||
|
||
# Burn tokens and immediately check balances and supply
|
||
def test_burn_basic(self):
|
||
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], 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.burn(self.address, self.accounts[1], 600000)
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 0)
|
||
|
||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||
(tx_hash, o) = c.add_minter(self.address, self.accounts[0], self.accounts[1])
|
||
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.burn(self.address, self.accounts[1], 600000)
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
new_supply = c.parse_total_supply(r)
|
||
self.assertEqual(new_supply, 400000)
|
||
|
||
o = c.total_burned(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
burned = c.parse_total_burned(r)
|
||
self.assertEqual(burned, 600000)
|
||
|
||
|
||
# burn tokens and check sink balance and supply after first redistribution period
|
||
def test_burned_redistribution(self):
|
||
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], 1000000000)
|
||
r = self.rpc.do(o)
|
||
|
||
(tx_hash, o) = c.burn(self.address, self.accounts[0], 500000000)
|
||
self.rpc.do(o)
|
||
|
||
(tx_hash, o) = c.transfer(self.address, self.accounts[0], self.sink_address, 500000000)
|
||
r = self.rpc.do(o)
|
||
|
||
self.backend.time_travel(self.start_time + self.period_seconds)
|
||
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bal = c.parse_balance(r)
|
||
self.assert_within(bal, 490000000, 1) # 2% == 10000000
|
||
|
||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
new_supply = c.parse_total_supply(r)
|
||
self.assertEqual(new_supply, 500000000)
|
||
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bal = c.parse_balance(r)
|
||
self.assert_within(bal, 500000000, 1)
|
||
|
||
self.backend.time_travel(self.start_time + (self.period_seconds * 2))
|
||
|
||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
new_supply = c.parse_total_supply(r)
|
||
self.assertEqual(new_supply, 500000000)
|
||
|
||
# if we don't burn anything more it should be the same
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bal = c.parse_balance(r)
|
||
self.assert_within_lower(bal, 500000000, 1)
|
||
|
||
|
||
# burn tokens and check sink and taxed balance and supply after first redistribution period
|
||
def test_burned_other_redistribution(self):
|
||
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], 1000000000)
|
||
r = self.rpc.do(o)
|
||
|
||
(tx_hash, o) = c.burn(self.address, self.accounts[0], 500000000)
|
||
r = self.rpc.do(o)
|
||
|
||
(tx_hash, o) = c.transfer(self.address, self.accounts[0], self.accounts[1], 500000000)
|
||
r = self.rpc.do(o)
|
||
|
||
self.backend.time_travel(self.start_time + self.period_seconds)
|
||
|
||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bal = c.parse_balance(r)
|
||
#self.assertEqual(bal, 416873881) # 9 periods demurrage
|
||
self.assert_within(bal, 490000000, 1)
|
||
|
||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
new_supply = c.parse_total_supply(r)
|
||
self.assertEqual(new_supply, 500000000)
|
||
|
||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bal = c.parse_balance(r)
|
||
self.assert_within(bal, 490000000, 1)
|
||
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
sink_bal = c.parse_balance(r)
|
||
self.assert_within_lower(sink_bal, 10000000, 1) # TODO is this ok variance, 1.0 is ppm?
|
||
|
||
self.backend.time_travel(self.start_time + (self.period_seconds * 2))
|
||
|
||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
new_supply = c.parse_total_supply(r)
|
||
self.assertEqual(new_supply, 500000000)
|
||
|
||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
next_bal = c.parse_balance(r)
|
||
self.assert_within(next_bal, 480200000, 0.01)
|
||
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
prev_sink_bal = sink_bal
|
||
bal = prev_sink_bal + (bal - next_bal)
|
||
sink_bal = c.parse_balance(r)
|
||
self.assert_within_lower(sink_bal, bal, 0.09) # TODO is this ok variance, 1.0 is ppm?
|
||
|
||
|
||
# verify expected results of balance and supply after multiple redistribution periods
|
||
def test_burn_accumulate(self):
|
||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||
|
||
(tx_hash, o) = c.add_minter(self.address, self.accounts[0], self.sink_address)
|
||
self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.sink_address, self.default_supply)
|
||
r = self.rpc.do(o)
|
||
|
||
balance_share = int(self.default_supply / 2)
|
||
nonce_oracle = RPCNonceOracle(self.sink_address, self.rpc)
|
||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||
(tx_hash, o) = c.transfer(self.address, self.sink_address, self.accounts[1], balance_share)
|
||
r = self.rpc.do(o)
|
||
|
||
new_supply = None
|
||
burn_rate = 1000
|
||
sink_bal = None
|
||
bob_bal = None
|
||
bob_refund = None
|
||
|
||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bob_bal = c.parse_balance(r)
|
||
prev_bob_bal = bob_bal
|
||
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
logg.info('sink has balance {}'.format(c.parse_balance(r)))
|
||
|
||
iterations = 100
|
||
|
||
for i in range(1, iterations + 1):
|
||
nonce_oracle = RPCNonceOracle(self.sink_address, self.rpc)
|
||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||
|
||
if bob_refund != None:
|
||
(tx_hash, o) = c.transfer(self.address, self.sink_address, self.accounts[1], bob_refund)
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
(tx_hash, o) = c.burn(self.address, self.sink_address, burn_rate)
|
||
r = self.rpc.do(o)
|
||
o = receipt(tx_hash)
|
||
r = self.rpc.do(o)
|
||
self.assertEqual(r['status'], 1)
|
||
|
||
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
|
||
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
|
||
o = c.total_supply(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
new_supply = c.parse_total_supply(r)
|
||
|
||
self.backend.time_travel(self.start_time + (self.period_seconds * i))
|
||
|
||
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
|
||
self.rpc.do(o)
|
||
|
||
o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
bob_bal = c.parse_balance(r)
|
||
bob_refund = prev_bob_bal - bob_bal
|
||
|
||
o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
burner_bal = c.parse_balance(r)
|
||
|
||
sum_supply = bob_bal + burner_bal
|
||
|
||
o = c.total_burned(self.address, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
total_burned = c.parse_balance(r)
|
||
|
||
o = c.to_base_amount(self.address, total_burned, sender_address=self.accounts[0])
|
||
r = self.rpc.do(o)
|
||
total_burned_base = c.parse_balance(r)
|
||
|
||
expected_supply = self.default_supply - (burn_rate * i)
|
||
logg.info('checking burn round {} balance burner {} bob {} supply {} expected {} summed {} burned {} base {}'.format(i, burner_bal, bob_bal, new_supply, expected_supply, sum_supply, total_burned, total_burned_base))
|
||
self.assertEqual(new_supply, expected_supply)
|
||
|
||
sum_supply = burner_bal + bob_bal
|
||
logg.debug('balances sink {} bob {} total {} supply real {} original {}'.format(sink_bal, bob_bal, sum_supply, new_supply, self.default_supply))
|
||
|
||
self.assert_within_lower(sum_supply, new_supply, 1)
|
||
self.assert_within_lower(burner_bal, balance_share - total_burned + bob_refund, 1)
|
||
|
||
bob_delta = self.default_supply * ((2 / 1000000) / 1000)
|
||
self.assert_within_greater(bob_bal, balance_share - bob_delta - bob_refund, 1)
|
||
|
||
self.assertEqual(total_burned, iterations * burn_rate)
|
||
|
||
|
||
if __name__ == '__main__':
|
||
unittest.main()
|