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

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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
from chainlib.eth.block import (
block_latest,
block_by_number,
)
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 erc20_demurrage_token.unittest.base import TestDemurrageUnit
logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
testdir = os.path.dirname(__file__)
class TestRedistribution(TestDemurrageUnit):
# TODO: move to "pure" test file when getdistribution is implemented in all contracts
def test_distribution(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
#demurrage = (1 - (self.tax_level / 1000000)) * (10**38)
demurrage = (1 - (self.tax_level / 1000000)) * (10**28)
supply = self.default_supply
o = c.get_distribution(self.address, supply, demurrage, sender_address=self.accounts[0])
r = self.rpc.do(o)
distribution = c.parse_get_distribution(r)
expected_distribution = self.default_supply * (self.tax_level / 1000000)
self.assert_within_lower(distribution, expected_distribution, 1000)
def test_distribution_from_redistribution(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
#demurrage = (1 - (self.tax_level / 1000000)) * (10**38)
demurrage = (1 - (self.tax_level / 1000000)) * (10**28)
supply = self.default_supply
o = c.to_redistribution(self.address, 0, demurrage, supply, 1, sender_address=self.accounts[0])
redistribution = self.rpc.do(o)
o = c.get_distribution_from_redistribution(self.address, redistribution, self.accounts[0])
r = self.rpc.do(o)
distribution = c.parse_get_distribution(r)
expected_distribution = self.default_supply * (self.tax_level / 1000000)
self.assert_within_lower(distribution, expected_distribution, 1000)
def test_single_step(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
mint_amount = 100000000
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], mint_amount)
self.rpc.do(o)
self.backend.time_travel(self.start_time + self.period_seconds)
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
self.rpc.do(o)
expected_balance = int(mint_amount - ((self.tax_level / 1000000) * mint_amount))
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, expected_balance)
def test_single_step_multi(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
mint_amount = 100000000
for i in range(3):
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[i+1], mint_amount)
self.rpc.do(o)
self.backend.time_travel(self.start_time + self.period_seconds)
(tx_hash, o) = c.change_period(self.address, self.accounts[0])
self.rpc.do(o)
expected_balance = int(mint_amount - ((self.tax_level / 1000000) * mint_amount))
for i in range(3):
o = c.balance_of(self.address, self.accounts[i+1], sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
self.assertEqual(balance, expected_balance)
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def test_single_step_transfer(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
mint_amount = 100000000
half_mint_amount = int(mint_amount / 2)
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], mint_amount)
self.rpc.do(o)
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[2], mint_amount)
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], self.accounts[3], half_mint_amount)
self.rpc.do(o)
self.backend.time_travel(self.start_time + self.period_seconds)
(tx_hash, o) = c.change_period(self.address, self.accounts[1])
self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
# check that we have crossed into new period, this will throw if not
o = c.redistributions(self.address, 1, sender_address=self.accounts[0])
self.rpc.do(o)
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demurrage_amount = int((self.tax_level / 1000000) * mint_amount)
expected_balance = mint_amount - demurrage_amount
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)
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self.assertEqual(balance, expected_balance)
half_demurrage_amount = int((self.tax_level / 1000000) * half_mint_amount)
expected_balance = half_mint_amount - half_demurrage_amount
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, expected_balance)
o = c.balance_of(self.address, self.accounts[3], 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, expected_balance)
o = c.total_supply(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
supply = c.parse_total_supply(r)
o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
redistribution = self.rpc.do(o)
o = c.to_redistribution_supply(self.address, redistribution, sender_address=self.accounts[0])
r = self.rpc.do(o)
supply = c.parse_to_redistribution_item(r)
o = c.to_redistribution_demurrage_modifier(self.address, redistribution, sender_address=self.accounts[0])
r = self.rpc.do(o)
demurrage = c.parse_to_redistribution_item(r)
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# o = c.demurrage_amount(self.address, sender_address=self.accounts[0])
# r = self.rpc.do(o)
# demurrage = c.parse_demurrage_amount(r)
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logg.debug('\nrediistribution {}\ndemurrage {}\nsupply {}'.format(redistribution, demurrage, supply))
expected_balance = int(supply * (self.tax_level / 1000000))
expected_balance_tolerance = 1
o = c.balance_of(self.address, self.sink_address, sender_address=self.accounts[0])
r = self.rpc.do(o)
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balance = c.parse_balance(r)
self.assert_within_lower(balance, expected_balance, 1000)
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if __name__ == '__main__':
unittest.main()