196 lines
7.1 KiB
Python
196 lines
7.1 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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import datetime
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# external imports
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from chainlib.eth.constant import ZERO_ADDRESS
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from chainlib.eth.nonce import RPCNonceOracle
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from chainlib.eth.tx import receipt
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from chainlib.eth.block import (
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block_latest,
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block_by_number,
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)
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# local imports
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from erc20_demurrage_token import DemurrageToken
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# test imports
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from erc20_demurrage_token.unittest.base import TestDemurrageDefault
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logging.basicConfig(level=logging.DEBUG)
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logg = logging.getLogger()
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testdir = os.path.dirname(__file__)
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class TestBurn(TestDemurrageDefault):
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def test_burn_basic(self):
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nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000000)
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r = self.rpc.do(o)
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nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.burn(self.address, self.accounts[1], 600000)
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r = self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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self.assertEqual(r['status'], 0)
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nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.add_minter(self.address, self.accounts[0], self.accounts[1])
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r = self.rpc.do(o)
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nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.burn(self.address, self.accounts[1], 600000)
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r = self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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self.assertEqual(r['status'], 1)
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o = c.total_supply(self.address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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new_supply = c.parse_total_supply(r)
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self.assertEqual(new_supply, 400000)
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o = c.total_burned(self.address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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burned = c.parse_total_burned(r)
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self.assertEqual(burned, 600000)
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def test_burned_redistribution(self):
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nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 1000000000)
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r = self.rpc.do(o)
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(tx_hash, o) = c.burn(self.address, self.accounts[0], 500000000)
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r = self.rpc.do(o)
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(tx_hash, o) = c.transfer(self.address, self.accounts[0], self.sink_address, 500000000)
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r = self.rpc.do(o)
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self.backend.time_travel(self.start_time + self.period_seconds)
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o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bal = c.parse_balance(r)
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self.assertEqual(bal, 416873881) # 9 periods demurrage
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(tx_hash, o) = c.change_period(self.address, self.accounts[0])
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r = self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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self.assertEqual(r['status'], 1)
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o = c.total_supply(self.address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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new_supply = c.parse_total_supply(r)
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self.assertEqual(new_supply, 500000000)
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o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bal = c.parse_balance(r)
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self.assert_within_lower(bal, 500000000, 0.0025)
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self.backend.time_travel(self.start_time + (self.period_seconds * 2))
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(tx_hash, o) = c.change_period(self.address, self.accounts[0])
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r = self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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self.assertEqual(r['status'], 1)
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o = c.total_supply(self.address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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new_supply = c.parse_total_supply(r)
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self.assertEqual(new_supply, 500000000)
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# if we don't burn anything more it should be the same
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o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bal = c.parse_balance(r)
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self.assert_within_lower(bal, 500000000, 0.0025)
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def test_burned_other_redistribution(self):
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nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 1000000000)
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r = self.rpc.do(o)
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(tx_hash, o) = c.burn(self.address, self.accounts[0], 500000000)
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r = self.rpc.do(o)
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(tx_hash, o) = c.transfer(self.address, self.accounts[0], self.accounts[1], 500000000)
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r = self.rpc.do(o)
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self.backend.time_travel(self.start_time + self.period_seconds)
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o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bal = c.parse_balance(r)
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self.assertEqual(bal, 416873881) # 9 periods demurrage
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(tx_hash, o) = c.change_period(self.address, self.accounts[0])
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r = self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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self.assertEqual(r['status'], 1)
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o = c.total_supply(self.address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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new_supply = c.parse_total_supply(r)
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self.assertEqual(new_supply, 500000000)
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o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bal = c.parse_balance(r)
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self.assertEqual(bal, 408536403) # 9 periods demurrage
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o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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sink_bal = c.parse_balance(r)
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self.assert_within_lower(sink_bal, 500000000 - 408536403, 0.09) # TODO is this ok variance, 1.0 is ppm?
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self.backend.time_travel(self.start_time + (self.period_seconds * 2))
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(tx_hash, o) = c.change_period(self.address, self.accounts[0])
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r = self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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self.assertEqual(r['status'], 1)
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o = c.total_supply(self.address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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new_supply = c.parse_total_supply(r)
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self.assertEqual(new_supply, 500000000)
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o = c.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
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r = self.rpc.do(o)
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next_bal = c.parse_balance(r)
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self.assertEqual(next_bal, 333803985) # 9 periods demurrage
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o = c.balance(self.address, self.sink_address, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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prev_sink_bal = sink_bal
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bal = prev_sink_bal + (bal - next_bal)
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sink_bal = c.parse_balance(r)
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self.assert_within_lower(sink_bal, bal, 0.09) # TODO is this ok variance, 1.0 is ppm?
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if __name__ == '__main__':
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unittest.main()
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