mirror of
git://holbrook.no/erc20-demurrage-token
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115 lines
4.0 KiB
Python
115 lines
4.0 KiB
Python
# standard imports
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import datetime
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import unittest
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import logging
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import os
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# external imports
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from chainlib.eth.nonce import RPCNonceOracle
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from chainlib.eth.tx import receipt
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# local imports
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from erc20_demurrage_token import DemurrageToken
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from erc20_demurrage_token.demurrage import DemurrageCalculator
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# test imports
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from erc20_demurrage_token.unittest import TestDemurrageDefault
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logging.basicConfig(level=logging.INFO)
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logg = logging.getLogger()
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class TestDemurragePeriods(TestDemurrageDefault):
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# verify that tax level calculation is in ppm as expected
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def test_ppm(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], self.default_supply)
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r = self.rpc.do(o)
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self.backend.time_travel(self.start_time + 60)
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(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
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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.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bob_bal = c.parse_balance(r)
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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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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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balance_delta = self.default_supply * ((2 / 1000000) / 1000)
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self.assertEqual(bob_bal, self.default_supply - balance_delta)
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# verify balances and supply after multiple demurrage periods
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def test_over_time(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], self.default_supply)
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r = self.rpc.do(o)
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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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bob_bal = c.parse_balance(r)
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prev_bob_bal = bob_bal
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nonce_oracle = RPCNonceOracle(self.sink_address, self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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iterations = 100
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for i in range(1, iterations + 1):
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self.backend.time_travel(self.start_time + (self.period_seconds * i))
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(tx_hash, o) = c.transfer(self.address, self.sink_address, self.accounts[1], prev_bob_bal - bob_bal)
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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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(tx_hash, o) = c.apply_demurrage(self.address, self.sink_address)
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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.balance(self.address, self.accounts[1], sender_address=self.accounts[0])
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r = self.rpc.do(o)
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bob_bal = c.parse_balance(r)
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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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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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logg.info('round {} supply {} balance sink {} bob {}'.format(i, new_supply, sink_bal, bob_bal))
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sum_supply = sink_bal + bob_bal
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bob_delta = self.default_supply * ((2 / 1000000) / 100)
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self.assert_within_lower(sum_supply, new_supply, 0.00001)
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self.assert_within_greater(bob_bal, self.default_supply - bob_delta, 0.001)
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self.assert_within_lower(sink_bal, bob_delta, 1000)
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if __name__ == '__main__':
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unittest.main()
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