cicnet/erc20-demurrage-token
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Apply demurrage on minutes on periods (SingleCap only)

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This commit is contained in:
nolash 2021-06-07 12:08:04 +02:00
parent 32ae98d581
commit dd878aa5cd
Signed by: lash
GPG Key ID: 21D2E7BB88C2A746
11 changed files with 320 additions and 252 deletions
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2
python/erc20_demurrage_token/data/DemurrageTokenSingleCap.bin
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2
python/erc20_demurrage_token/data/DemurrageTokenSingleCap.json
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1
python/examples/sim_noredistribute.py
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@ -19,7 +19,6 @@ settings.demurrage_level = int(decay_per_minute*(10**38))
settings.period_minutes = 1 # 1 week in minutes settings.period_minutes = 1 # 1 week in minutes
chain = 'evm:foochain:42' chain = 'evm:foochain:42'
cap = (10 ** 6) * (10 ** 12) cap = (10 ** 6) * (10 ** 12)
#cap = 0
# instantiate simulation # instantiate simulation
sim = DemurrageTokenSimulation(chain, settings, redistribute=False, cap=cap, actors=10) sim = DemurrageTokenSimulation(chain, settings, redistribute=False, cap=cap, actors=10)

2
python/test.sh
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@ -23,7 +23,7 @@ done
modes=(MultiCap MultiNocap) modes=(MultiCap MultiNocap)
for m in ${modes[@]}; do for m in ${modes[@]}; do
ERC20_DEMURRAGE_TOKEN_TEST_MODE=$m python tests/test_pure.py ERC20_DEMURRAGE_TOKEN_TEST_MODE=$m python tests/test_remainder.py
ERC20_DEMURRAGE_TOKEN_TEST_MODE=$m python tests/test_redistribution.py ERC20_DEMURRAGE_TOKEN_TEST_MODE=$m python tests/test_redistribution.py
done done

3
python/tests/base.py
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@ -28,8 +28,7 @@ TAX_LEVEL = int(10000 * 2) # 2%
# calc "1-(0.98)^(1/518400)" <- 518400 = 30 days of blocks # calc "1-(0.98)^(1/518400)" <- 518400 = 30 days of blocks
# 0.00000003897127107225 # 0.00000003897127107225
#PERIOD = int(60/BLOCKTIME) * 60 * 24 * 30 # month #PERIOD = int(60/BLOCKTIME) * 60 * 24 * 30 # month
PERIOD = 1 PERIOD = 10
class TestDemurrage(EthTesterCase): class TestDemurrage(EthTesterCase):

44
python/tests/test_basic.py
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@ -9,6 +9,10 @@ import datetime
from chainlib.eth.constant import ZERO_ADDRESS from chainlib.eth.constant import ZERO_ADDRESS
from chainlib.eth.nonce import RPCNonceOracle from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.tx import receipt from chainlib.eth.tx import receipt
from chainlib.eth.block import (
block_latest,
block_by_number,
)
# local imports # local imports
from erc20_demurrage_token import DemurrageToken from erc20_demurrage_token import DemurrageToken
@ -46,21 +50,55 @@ class TestBasic(TestDemurrageDefault):
demurrage_amount = c.parse_demurrage_amount(r) demurrage_amount = c.parse_demurrage_amount(r)
self.assertEqual(modifier, demurrage_amount) self.assertEqual(modifier, demurrage_amount)
self.backend.time_travel(self.start_time + self.period_seconds - 1) o = block_latest()
r = self.rpc.do(o)
o = block_by_number(r)
b = self.rpc.do(o)
logg.debug('block {} start {}'.format(b['timestamp'], self.start_time))
self.backend.time_travel(self.start_time + 2)
(tx_hash, o) = c.apply_demurrage(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
o = c.demurrage_amount(self.address, sender_address=self.accounts[0]) o = c.demurrage_amount(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) r = self.rpc.do(o)
demurrage_amount = c.parse_demurrage_amount(r) demurrage_amount = c.parse_demurrage_amount(r)
self.assertEqual(modifier, demurrage_amount) self.assertEqual(modifier, demurrage_amount)
self.backend.time_travel(self.start_time + self.period_seconds + 1) self.backend.time_travel(self.start_time + 61)
(tx_hash, o) = c.apply_demurrage(self.address, sender_address=self.accounts[0]) (tx_hash, o) = c.apply_demurrage(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) r = self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
o = c.demurrage_amount(self.address, sender_address=self.accounts[0]) o = c.demurrage_amount(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) r = self.rpc.do(o)
demurrage_amount = c.parse_demurrage_amount(r) demurrage_amount = c.parse_demurrage_amount(r)
modifier = int(98 * (10 ** 36)) modifier_base = 1000000 - self.tax_level
logg.debug('modifier base {}'.format(modifier_base))
modifier = int(modifier_base * (10 ** 32)) # 38 decimal places minus 6 (1000000)
self.assertEqual(modifier, demurrage_amount) self.assertEqual(modifier, demurrage_amount)
self.backend.time_travel(self.start_time + 601)
(tx_hash, o) = c.apply_demurrage(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
o = c.demurrage_amount(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
demurrage_amount = c.parse_demurrage_amount(r)
modifier_base = ((1000000 - self.tax_level) / 1000000) ** 10
modifier = int(modifier_base * (10 ** 12))
rounding_tolerance_nano = 4000000 # 0.000004% precision
demurrage_amount_truncate = int(demurrage_amount / (10 ** 26)) # equals 12 decimal places
self.assertGreaterEqual(modifier, demurrage_amount_truncate - rounding_tolerance_nano)
self.assertLessEqual(modifier, demurrage_amount_truncate)
def test_mint(self): def test_mint(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)

466
python/tests/test_redistribution.py
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@ -31,7 +31,6 @@ testdir = os.path.dirname(__file__)
class TestRedistribution(TestDemurrageDefault): class TestRedistribution(TestDemurrageDefault):
@unittest.expectedFailure
def test_whole_is_parts(self): def test_whole_is_parts(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
@ -84,239 +83,244 @@ class TestRedistribution(TestDemurrageDefault):
balance += balance_item balance += balance_item
logg.debug('balance {} {} total {}'.format(i, balance_item, balance)) logg.debug('balance {} {} total {}'.format(i, balance_item, balance))
o = c.balance_of(self.address, self.sink_address, sender_address=self.accounts[0])
r = self.rpc.do(o)
balance_item = c.parse_balance_of(r)
balance += balance_item
self.assertEqual(balance, 200000000) self.assertEqual(balance, 200000000)
def test_debug_periods(self): # def test_debug_periods(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
#
o = c.actual_period(self.address, sender_address=self.accounts[0]) # o = c.actual_period(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
pactual = c.parse_actual_period(r) # pactual = c.parse_actual_period(r)
#
o = c.period_start(self.address, sender_address=self.accounts[0]) # o = c.period_start(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
pstart = c.parse_actual_period(r) # pstart = c.parse_actual_period(r)
#
o = c.period_duration(self.address, sender_address=self.accounts[0]) # o = c.period_duration(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
pduration = c.parse_actual_period(r) # pduration = c.parse_actual_period(r)
#
o = block_latest() # o = block_latest()
blocknumber = self.rpc.do(o) # blocknumber = self.rpc.do(o)
#
logg.debug('actual {} start {} duration {} blocknumber {}'.format(pactual, pstart, pduration, blocknumber)) # logg.debug('actual {} start {} duration {} blocknumber {}'.format(pactual, pstart, pduration, blocknumber))
#
#
# TODO: check receipt log outputs # # TODO: check receipt log outputs
def test_redistribution_storage(self): # def test_redistribution_storage(self):
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
o = c.redistributions(self.address, 0, sender_address=self.accounts[0]) # o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000f424000000000000000000000000000000000001') # self.assertEqual(strip_0x(r), '000000000000000000000000f424000000000000000000000000000000000001')
#
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000000) # (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], 1000000)
r = self.rpc.do(o) # r = self.rpc.do(o)
#
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[2], 1000000) # (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[2], 1000000)
r = self.rpc.do(o) # r = self.rpc.do(o)
#
external_address = to_checksum_address('0x' + os.urandom(20).hex()) # external_address = to_checksum_address('0x' + os.urandom(20).hex())
#
nonce_oracle = RPCNonceOracle(self.accounts[2], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[2], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[2], external_address, 1000000) # (tx_hash, o) = c.transfer(self.address, self.accounts[2], external_address, 1000000)
r = self.rpc.do(o) # r = self.rpc.do(o)
#
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[1], external_address, 999999) # (tx_hash, o) = c.transfer(self.address, self.accounts[1], external_address, 999999)
r = self.rpc.do(o) # r = self.rpc.do(o)
#
self.backend.time_travel(self.start_time + self.period_seconds + 1) # self.backend.time_travel(self.start_time + self.period_seconds + 1)
#
o = c.redistributions(self.address, 0, sender_address=self.accounts[0]) # o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000f42400000000010000000000001e848000000001') # self.assertEqual(strip_0x(r), '000000000000000000000000f42400000000010000000000001e848000000001')
#
o = c.redistributions(self.address, 0, sender_address=self.accounts[0]) # o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000f42400000000010000000000001e848000000001') # self.assertEqual(strip_0x(r), '000000000000000000000000f42400000000010000000000001e848000000001')
#
#
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # 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[0], 1000000) # (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[0], 1000000)
r = self.rpc.do(o) # r = self.rpc.do(o)
#
o = c.redistributions(self.address, 1, sender_address=self.accounts[0]) # o = c.redistributions(self.address, 1, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(strip_0x(r), '000000000000000000000000ef4200000000000000000000002dc6c000000002') # self.assertEqual(strip_0x(r), '000000000000000000000000ef4200000000000000000000002dc6c000000002')
#
#
def test_redistribution_balance_on_zero_participants(self): # def test_redistribution_balance_on_zero_participants(self):
supply = self.default_supply # supply = self.default_supply
#
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # 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], supply) # (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[1], supply)
r = self.rpc.do(o) # r = self.rpc.do(o)
#
self.backend.time_travel(self.start_time + self.period_seconds + 1) # self.backend.time_travel(self.start_time + self.period_seconds + 1)
(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0]) # (tx_hash, o) = c.apply_demurrage(self.address, self.accounts[0])
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
rcpt = self.rpc.do(o) # rcpt = self.rpc.do(o)
self.assertEqual(rcpt['status'], 1) # self.assertEqual(rcpt['status'], 1)
#
(tx_hash, o) = c.change_period(self.address, self.accounts[0]) # (tx_hash, o) = c.change_period(self.address, self.accounts[0])
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
o = c.total_supply(self.address, sender_address=self.accounts[0]) # o = c.total_supply(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
total_supply = c.parse_total_supply(r) # total_supply = c.parse_total_supply(r)
sink_increment = int(total_supply * (self.tax_level / 1000000)) # sink_increment = int(total_supply * (self.tax_level / 1000000))
self.assertEqual(supply, total_supply) # self.assertEqual(supply, total_supply)
#
for l in rcpt['logs']: # for l in rcpt['logs']:
if l['topics'][0] == '0xa0717e54e02bd9829db5e6e998aec0ae9de796b8d150a3cc46a92ab869697755': # event Decayed(uint256,uint256,uint256,uint256) # if l['topics'][0] == '0xa0717e54e02bd9829db5e6e998aec0ae9de796b8d150a3cc46a92ab869697755': # event Decayed(uint256,uint256,uint256,uint256)
period = int.from_bytes(bytes.fromhex(strip_0x(l['topics'][1])), 'big') # period = int.from_bytes(bytes.fromhex(strip_0x(l['topics'][1])), 'big')
self.assertEqual(period, 2) # self.assertEqual(period, 2)
b = bytes.fromhex(strip_0x(l['data'])) # b = bytes.fromhex(strip_0x(l['data']))
remainder = int.from_bytes(b, 'big') # remainder = int.from_bytes(b, 'big')
self.assertEqual(remainder, int((1000000 - self.tax_level) * (10 ** 32))) # self.assertEqual(remainder, int((1000000 - self.tax_level) * (10 ** 32)))
#
o = c.balance_of(self.address, self.sink_address, sender_address=self.accounts[0]) # o = c.balance_of(self.address, self.sink_address, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
sink_balance = c.parse_balance_of(r) # sink_balance = c.parse_balance_of(r)
#
self.assertEqual(sink_balance, int(sink_increment * 0.98)) # self.assertEqual(sink_balance, int(sink_increment * 0.98))
self.assertEqual(sink_balance, int(sink_increment * (1000000 - self.tax_level) / 1000000)) # self.assertEqual(sink_balance, int(sink_increment * (1000000 - self.tax_level) / 1000000))
#
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0]) # o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
balance = c.parse_balance_of(r) # balance = c.parse_balance_of(r)
self.assertEqual(balance, supply - sink_increment) # self.assertEqual(balance, supply - sink_increment)
#
#
def test_redistribution_two_of_ten(self): # def test_redistribution_two_of_ten(self):
mint_amount = 100000000 # mint_amount = 100000000
nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[0], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
z = 0 # z = 0
for i in range(10): # for i in range(10):
(tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[i], mint_amount) # (tx_hash, o) = c.mint_to(self.address, self.accounts[0], self.accounts[i], mint_amount)
self.rpc.do(o) # self.rpc.do(o)
z += mint_amount # z += mint_amount
#
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0]) # o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
initial_balance = c.parse_balance_of(r) # initial_balance = c.parse_balance_of(r)
#
spend_amount = 1000000 # spend_amount = 1000000
external_address = to_checksum_address('0x' + os.urandom(20).hex()) # external_address = to_checksum_address('0x' + os.urandom(20).hex())
#
nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[1], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[1], external_address, spend_amount) # (tx_hash, o) = c.transfer(self.address, self.accounts[1], external_address, spend_amount)
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
nonce_oracle = RPCNonceOracle(self.accounts[2], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[2], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[2], external_address, spend_amount) # (tx_hash, o) = c.transfer(self.address, self.accounts[2], external_address, spend_amount)
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
# No cheating! # # No cheating!
nonce_oracle = RPCNonceOracle(self.accounts[3], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[3], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[3], self.accounts[3], spend_amount) # (tx_hash, o) = c.transfer(self.address, self.accounts[3], self.accounts[3], spend_amount)
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
# No cheapskating! # # No cheapskating!
nonce_oracle = RPCNonceOracle(self.accounts[4], self.rpc) # nonce_oracle = RPCNonceOracle(self.accounts[4], self.rpc)
c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle) # c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
(tx_hash, o) = c.transfer(self.address, self.accounts[4], external_address, spend_amount-1) # (tx_hash, o) = c.transfer(self.address, self.accounts[4], external_address, spend_amount-1)
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
#
self.backend.time_travel(self.start_time + self.period_seconds + 1) # self.backend.time_travel(self.start_time + self.period_seconds + 1)
#
(tx_hash, o) = c.apply_demurrage(self.address, self.accounts[4]) # (tx_hash, o) = c.apply_demurrage(self.address, self.accounts[4])
self.rpc.do(o) # self.rpc.do(o)
#
(tx_hash, o) = c.change_period(self.address, self.accounts[4]) # (tx_hash, o) = c.change_period(self.address, self.accounts[4])
self.rpc.do(o) # self.rpc.do(o)
#
o = c.balance_of(self.address, self.accounts[3], sender_address=self.accounts[0]) # o = c.balance_of(self.address, self.accounts[3], sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
bummer_balance = c.parse_balance_of(r) # bummer_balance = c.parse_balance_of(r)
#
self.assertEqual(bummer_balance, mint_amount - (mint_amount * (self.tax_level / 1000000))) # self.assertEqual(bummer_balance, mint_amount - (mint_amount * (self.tax_level / 1000000)))
logg.debug('bal {} '.format(bummer_balance)) # logg.debug('bal {} '.format(bummer_balance))
#
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0]) # o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
bummer_balance = c.parse_balance_of(r) # bummer_balance = c.parse_balance_of(r)
spender_balance = mint_amount - spend_amount # spender_balance = mint_amount - spend_amount
spender_decayed_balance = int(spender_balance - (spender_balance * (self.tax_level / 1000000))) # spender_decayed_balance = int(spender_balance - (spender_balance * (self.tax_level / 1000000)))
self.assertEqual(bummer_balance, spender_decayed_balance) # self.assertEqual(bummer_balance, spender_decayed_balance)
logg.debug('bal {} '.format(bummer_balance)) # logg.debug('bal {} '.format(bummer_balance))
#
(tx_hash, o) = c.apply_redistribution_on_account(self.address, self.accounts[4], self.accounts[1]) # (tx_hash, o) = c.apply_redistribution_on_account(self.address, self.accounts[4], self.accounts[1])
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
(tx_hash, o) = c.apply_redistribution_on_account(self.address, self.accounts[4], self.accounts[2]) # (tx_hash, o) = c.apply_redistribution_on_account(self.address, self.accounts[4], self.accounts[2])
self.rpc.do(o) # self.rpc.do(o)
o = receipt(tx_hash) # o = receipt(tx_hash)
r = self.rpc.do(o) # r = self.rpc.do(o)
self.assertEqual(r['status'], 1) # self.assertEqual(r['status'], 1)
#
o = c.redistributions(self.address, 0, sender_address=self.accounts[0]) # o = c.redistributions(self.address, 0, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
redistribution_data = c.parse_redistributions(r) # redistribution_data = c.parse_redistributions(r)
logg.debug('redist data {}'.format(redistribution_data)) # logg.debug('redist data {}'.format(redistribution_data))
#
o = c.account_period(self.address, self.accounts[1], sender_address=self.accounts[0]) # o = c.account_period(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
account_period_data = c.parse_account_period(r) # account_period_data = c.parse_account_period(r)
logg.debug('account period {}'.format(account_period_data)) # logg.debug('account period {}'.format(account_period_data))
#
o = c.actual_period(self.address, sender_address=self.accounts[0]) # o = c.actual_period(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
actual_period = c.parse_actual_period(r) # actual_period = c.parse_actual_period(r)
logg.debug('period {}'.format(actual_period)) # logg.debug('period {}'.format(actual_period))
#
redistribution = int((z / 2) * (self.tax_level / 1000000)) # redistribution = int((z / 2) * (self.tax_level / 1000000))
spender_new_base_balance = ((mint_amount - spend_amount) + redistribution) # spender_new_base_balance = ((mint_amount - spend_amount) + redistribution)
spender_new_decayed_balance = int(spender_new_base_balance - (spender_new_base_balance * (self.tax_level / 1000000))) # spender_new_decayed_balance = int(spender_new_base_balance - (spender_new_base_balance * (self.tax_level / 1000000)))
#
o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0]) # o = c.balance_of(self.address, self.accounts[1], sender_address=self.accounts[0])
r = self.rpc.do(o) # r = self.rpc.do(o)
spender_actual_balance = c.parse_balance_of(r) # spender_actual_balance = c.parse_balance_of(r)
logg.debug('rrr {} {}'.format(redistribution, spender_new_decayed_balance)) # logg.debug('rrr {} {}'.format(redistribution, spender_new_decayed_balance))
#
self.assertEqual(spender_actual_balance, spender_new_decayed_balance) # self.assertEqual(spender_actual_balance, spender_new_decayed_balance)
#
if __name__ == '__main__': if __name__ == '__main__':
unittest.main() unittest.main()

14
python/tests/test_redistribution_unit.py
View File

@ -100,6 +100,9 @@ class TestRedistribution(TestDemurrageUnit):
(tx_hash, o) = c.change_period(self.address, self.accounts[1]) (tx_hash, o) = c.change_period(self.address, self.accounts[1])
self.rpc.do(o) self.rpc.do(o)
o = receipt(tx_hash)
r = self.rpc.do(o)
self.assertEqual(r['status'], 1)
demurrage_amount = int((self.tax_level / 1000000) * mint_amount) demurrage_amount = int((self.tax_level / 1000000) * mint_amount)
@ -126,6 +129,17 @@ class TestRedistribution(TestDemurrageUnit):
r = self.rpc.do(o) r = self.rpc.do(o)
supply = c.parse_total_supply(r) 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.demurrage_amount(self.address, sender_address=self.accounts[0])
r = self.rpc.do(o)
demurrage = c.parse_demurrage_amount(r)
logg.debug('\ndemurrage {}\nsupply {}'.format(demurrage, supply))
expected_balance = int(supply * (self.tax_level / 1000000)) expected_balance = int(supply * (self.tax_level / 1000000))
expected_balance_tolerance = 1 expected_balance_tolerance = 1

0
python/tests/test_pure.py → python/tests/test_remainder.py
View File

1
python/tests/test_single.py
View File

@ -28,6 +28,7 @@ testdir = os.path.dirname(__file__)
class TestRedistributionSingle(TestDemurrageSingle): class TestRedistributionSingle(TestDemurrageSingle):
def test_single_even_if_multiple(self): def test_single_even_if_multiple(self):
mint_amount = 100000000 mint_amount = 100000000

37
solidity/DemurrageTokenSingleCap.sol
View File

@ -21,7 +21,9 @@ contract DemurrageTokenSingleCap {
uint128 public demurrageAmount; uint128 public demurrageAmount;
// Cached demurrage period; the period for which demurrageAmount was calculated // Cached demurrage period; the period for which demurrageAmount was calculated
uint128 public demurragePeriod; //uint128 public demurragePeriod;
// Cached demurrage timestamp; the timestamp for which demurrageAmount was last calculated
uint256 public demurrageTimestamp;
// Implements EIP172 // Implements EIP172
address public owner; address public owner;
@ -103,10 +105,11 @@ contract DemurrageTokenSingleCap {
decimals = _decimals; decimals = _decimals;
// Demurrage setup // Demurrage setup
periodStart = block.timestamp; demurrageTimestamp = block.timestamp;
periodStart = demurrageTimestamp;
periodDuration = _periodMinutes * 60; periodDuration = _periodMinutes * 60;
demurrageAmount = uint128(ppmDivider * 1000000); // Represents 38 decimal places demurrageAmount = uint128(ppmDivider * 1000000); // Represents 38 decimal places
demurragePeriod = 1; //demurragePeriod = 1;
taxLevel = _taxLevelMinute; // Represents 38 decimal places taxLevel = _taxLevelMinute; // Represents 38 decimal places
bytes32 initialRedistribution = toRedistribution(0, 1000000, 0, 1); bytes32 initialRedistribution = toRedistribution(0, 1000000, 0, 1);
redistributions.push(initialRedistribution); redistributions.push(initialRedistribution);
@ -139,7 +142,8 @@ contract DemurrageTokenSingleCap {
baseBalance = baseBalanceOf(_account); baseBalance = baseBalanceOf(_account);
periodCount = actualPeriod() - demurragePeriod; //periodCount = actualPeriod() - demurragePeriod;
periodCount = getMinutesDelta(demurrageTimestamp);
currentDemurragedAmount = uint128(decayBy(demurrageAmount, periodCount)); currentDemurragedAmount = uint128(decayBy(demurrageAmount, periodCount));
@ -237,10 +241,12 @@ contract DemurrageTokenSingleCap {
// Save the current total supply amount to the current redistribution period // Save the current total supply amount to the current redistribution period
function saveRedistributionSupply() private returns (bool) { function saveRedistributionSupply() private returns (bool) {
uint256 currentRedistribution; uint256 currentRedistribution;
uint256 grownSupply;
grownSupply = growBy(totalSupply, 1);
currentRedistribution = uint256(redistributions[redistributions.length-1]); currentRedistribution = uint256(redistributions[redistributions.length-1]);
currentRedistribution &= (~maskRedistributionValue); currentRedistribution &= (~maskRedistributionValue);
currentRedistribution |= (totalSupply << shiftRedistributionValue); currentRedistribution |= (grownSupply << shiftRedistributionValue);
redistributions[redistributions.length-1] = bytes32(currentRedistribution); redistributions[redistributions.length-1] = bytes32(currentRedistribution);
return true; return true;
@ -270,29 +276,36 @@ contract DemurrageTokenSingleCap {
uint256 unit; uint256 unit;
redistributionSupply = toRedistributionSupply(_redistribution); redistributionSupply = toRedistributionSupply(_redistribution);
unit = redistributionSupply * (ppmDivider - (demurrageAmount / 1000000));
unit = (redistributionSupply * taxLevel) / 1000000;
increaseBaseBalance(sinkAddress, unit / ppmDivider); increaseBaseBalance(sinkAddress, unit / ppmDivider);
return unit; return unit;
} }
// Calculate the time delta in whole minutes passed between given timestamp and current timestamp
function getMinutesDelta(uint256 _lastTimestamp) public view returns (uint256) {
return (block.timestamp - _lastTimestamp) / 60;
}
// Calculate and cache the demurrage value corresponding to the (period of the) time of the method call // Calculate and cache the demurrage value corresponding to the (period of the) time of the method call
function applyDemurrage() public returns (bool) { function applyDemurrage() public returns (bool) {
uint128 epochPeriodCount; uint128 epochPeriodCount;
uint128 periodCount; uint256 periodCount;
uint256 lastDemurrageAmount; uint256 lastDemurrageAmount;
uint256 newDemurrageAmount; uint256 newDemurrageAmount;
epochPeriodCount = actualPeriod(); //epochPeriodCount = actualPeriod();
periodCount = epochPeriodCount - demurragePeriod; //periodCount = epochPeriodCount - demurragePeriod;
periodCount = getMinutesDelta(demurrageTimestamp);
if (periodCount == 0) { if (periodCount == 0) {
return false; return false;
} }
lastDemurrageAmount = demurrageAmount; lastDemurrageAmount = demurrageAmount;
demurrageAmount = uint128(decayBy(lastDemurrageAmount, periodCount)); demurrageAmount = uint128(decayBy(lastDemurrageAmount, periodCount));
demurragePeriod = epochPeriodCount; //demurragePeriod = epochPeriodCount;
emit Decayed(epochPeriodCount, periodCount, lastDemurrageAmount, demurrageAmount); demurrageTimestamp = periodStart + (periodCount * 60);
emit Decayed(block.timestamp, periodCount, lastDemurrageAmount, demurrageAmount);
return true; return true;
} }