143 lines
4.3 KiB
Python
143 lines
4.3 KiB
Python
# standard imports
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import logging
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import os
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import math
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# external imports
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from chainlib.eth.unittest.ethtester import EthTesterCase
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from chainlib.eth.tx import (
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receipt,
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)
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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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from chainlib.eth.nonce import RPCNonceOracle
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from chainlib.eth.constant import ZERO_ADDRESS
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# local imports
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from erc20_demurrage_token import (
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DemurrageTokenSettings,
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DemurrageToken,
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)
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from erc20_demurrage_token.fixed import (
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to_fixed,
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from_fixed,
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)
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logg = logging.getLogger()
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#BLOCKTIME = 5 # seconds
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TAX_LEVEL = int(10000 * 2) # 2%
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# calc "1-(0.98)^(1/518400)" <- 518400 = 30 days of blocks
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# 0.00000003897127107225
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PERIOD = 43200
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class TestTokenDeploy:
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"""tax level is ppm, 1000000 = 100%"""
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def __init__(self, rpc, token_symbol='FOO', token_name='Foo Token', sink_address=ZERO_ADDRESS, supply=10**12, tax_level=TAX_LEVEL, period=PERIOD):
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self.tax_level = tax_level
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self.period_seconds = period * 60
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self.settings = DemurrageTokenSettings()
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self.settings.name = token_name
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self.settings.symbol = token_symbol
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self.settings.decimals = 6
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tax_level_input = to_fixed((1 - (tax_level / 1000000)) ** (1 / period))
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self.settings.demurrage_level = tax_level_input
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self.settings.period_minutes = period
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self.settings.sink_address = sink_address
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self.sink_address = self.settings.sink_address
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logg.debug('using demurrage token settings: {}'.format(self.settings))
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o = block_latest()
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self.start_block = rpc.do(o)
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o = block_by_number(self.start_block, include_tx=False)
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r = rpc.do(o)
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try:
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self.start_time = int(r['timestamp'], 16)
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except TypeError:
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self.start_time = int(r['timestamp'])
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self.default_supply = supply
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self.default_supply_cap = 0
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def deploy(self, rpc, deployer_address, interface, supply_cap=0):
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tx_hash = None
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o = None
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(tx_hash, o) = interface.constructor(deployer_address, self.settings, redistribute=False, cap=0)
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r = rpc.do(o)
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o = receipt(tx_hash)
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r = rpc.do(o)
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assert r['status'] == 1
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self.start_block = r['block_number']
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self.address = r['contract_address']
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o = block_by_number(r['block_number'])
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r = rpc.do(o)
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self.start_time = r['timestamp']
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return self.address
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class TestDemurrage(EthTesterCase):
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def setUp(self):
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super(TestDemurrage, self).setUp()
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period = PERIOD
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try:
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period = getattr(self, 'period')
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except AttributeError as e:
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pass
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self.deployer = TestTokenDeploy(self.rpc, period=period)
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self.default_supply = self.deployer.default_supply
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self.default_supply_cap = self.deployer.default_supply_cap
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self.start_block = None
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self.address = None
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self.start_time = None
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def deploy(self, interface):
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self.address = self.deployer.deploy(self.rpc, self.accounts[0], interface, supply_cap=self.default_supply_cap)
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self.start_block = self.deployer.start_block
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self.start_time = self.deployer.start_time
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self.tax_level = self.deployer.tax_level
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self.period_seconds = self.deployer.period_seconds
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self.sink_address = self.deployer.sink_address
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logg.debug('contract address {} start block {} start time {}'.format(self.address, self.start_block, self.start_time))
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def assert_within_lower(self, v, target, tolerance_ppm):
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lower_target = target - (target * (tolerance_ppm / 1000000))
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self.assertGreaterEqual(v, lower_target)
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self.assertLessEqual(v, target)
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logg.debug('asserted within lower {} <= {} <= {}'.format(lower_target, v, target))
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def assert_equal_decimals(self, v, target, precision):
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target = int(target * (10 ** precision))
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target = target / (10 ** precision)
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self.assertEqual(v, target)
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def tearDown(self):
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pass
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class TestDemurrageDefault(TestDemurrage):
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def setUp(self):
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super(TestDemurrageDefault, self).setUp()
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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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self.deploy(c)
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