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erc20-demurrage-token-archive/python/tests/test_amounts.py

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# standard imports
import os
import unittest
import json
import logging
# external imports
from chainlib.eth.constant import ZERO_ADDRESS
from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.tx import receipt
# local imports
from erc20_demurrage_token import DemurrageToken
# test imports
from erc20_demurrage_token.unittest.base import TestDemurrageDefault
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logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
testdir = os.path.dirname(__file__)
class TestAmounts(TestDemurrageDefault):
def test_mints(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], 1000)
r = self.rpc.do(o)
self.backend.time_travel(self.start_time + self.period_seconds)
(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
r = self.rpc.do(o)
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
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self.assertEqual(balance, 817)
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000)
r = self.rpc.do(o)
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
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self.assert_within_lower(balance, 1817, 750)
self.backend.time_travel(self.start_time + self.period_seconds * 2)
(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
r = self.rpc.do(o)
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
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expected_balance = ((1 - self.tax_level / 1000000) ** 10) * 1000
expected_balance += ((1 - self.tax_level / 1000000) ** 20) * 1000
self.assert_within_lower(balance, expected_balance, 500)
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def test_transfers(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], 2000)
r = self.rpc.do(o)
self.backend.time_travel(self.start_time + self.period_seconds)
(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
r = self.rpc.do(o)
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
self.assertEqual(balance, 1634)
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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], self.accounts[2], 500)
r = self.rpc.do(o)
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
self.assertEqual(balance, 1134)
o = c.balance_of(self.address, self.accounts[2], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
self.assert_within_lower(balance, 500, 2000)
def test_dynamic_amount(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], 2000)
r = self.rpc.do(o)
cases = [
(61, 1960),
(121, 1920),
(181, 1882),
(241, 1844),
(301, 1807),
(361, 1771),
(421, 1736),
(481, 1701),
(541, 1667),
(601, 1634),
]
for case in cases:
self.backend.time_travel(self.start_time + case[0])
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
self.assertEqual(balance, case[1])
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if __name__ == '__main__':
unittest.main()