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feature_loan_payback_dfi.py
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#!/usr/bin/env python3
# Copyright (c) 2014-2019 The Bitcoin Core developers
# Copyright (c) DeFi Blockchain Developers
# Distributed under the MIT software license, see the accompanying
# file LICENSE or http://www.opensource.org/licenses/mit-license.php.
"""Test Loan - payback loan dfi."""
from test_framework.test_framework import DefiTestFramework
from test_framework.util import assert_equal, assert_raises_rpc_error
from test_framework.authproxy import JSONRPCException
import calendar
import time
from decimal import Decimal, ROUND_UP
class PaybackDFILoanTest (DefiTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.setup_clean_chain = True
self.extra_args = [
['-txnotokens=0', '-amkheight=50', '-bayfrontheight=50', '-bayfrontgardensheight=1',
'-fortcanningheight=50', '-fortcanninghillheight=50', '-eunosheight=50', '-txindex=1']
]
def run_test(self):
self.nodes[0].generate(150)
account0 = self.nodes[0].get_genesis_keys().ownerAuthAddress
symbolDFI = "DFI"
symbolBTC = "BTC"
symboldUSD = "DUSD"
symbolTSLA = "TSLA"
self.nodes[0].createtoken({
"symbol": symbolBTC,
"name": "BTC token",
"isDAT": True,
"collateralAddress": account0
})
self.nodes[0].generate(1)
idDFI = list(self.nodes[0].gettoken(symbolDFI).keys())[0]
idBTC = list(self.nodes[0].gettoken(symbolBTC).keys())[0]
self.nodes[0].utxostoaccount({account0: "1000@" + symbolDFI})
oracle_address1 = self.nodes[0].getnewaddress("", "legacy")
price_feeds1 = [
{"currency": "USD", "token": "DFI"},
{"currency": "USD", "token": "BTC"},
{"currency": "USD", "token": "TSLA"}
]
oracle_id1 = self.nodes[0].appointoracle(
oracle_address1, price_feeds1, 10)
self.nodes[0].generate(1)
# feed oracle
oracle1_prices = [
{"currency": "USD", "tokenAmount": "10@TSLA"},
{"currency": "USD", "tokenAmount": "10@DFI"},
{"currency": "USD", "tokenAmount": "10@BTC"}
]
timestamp = calendar.timegm(time.gmtime())
self.nodes[0].setoracledata(oracle_id1, timestamp, oracle1_prices)
self.nodes[0].generate(1)
self.nodes[0].setcollateraltoken({
'token': idDFI,
'factor': 1,
'fixedIntervalPriceId': "DFI/USD"
})
self.nodes[0].setcollateraltoken({
'token': idBTC,
'factor': 1,
'fixedIntervalPriceId': "BTC/USD"})
self.nodes[0].generate(1)
self.nodes[0].setloantoken({
'symbol': symbolTSLA,
'name': "Tesla stock token",
'fixedIntervalPriceId': "TSLA/USD",
'mintable': True,
'interest': 1
})
self.nodes[0].setloantoken({
'symbol': symboldUSD,
'name': "DUSD stable token",
'fixedIntervalPriceId': "DUSD/USD",
'mintable': True,
'interest': 1
})
self.nodes[0].generate(1)
self.nodes[0].createloanscheme(150, 5, 'LOAN150')
self.nodes[0].generate(5)
iddUSD = list(self.nodes[0].gettoken(symboldUSD).keys())[0]
vaultId = self.nodes[0].createvault(account0, 'LOAN150')
self.nodes[0].generate(1)
self.nodes[0].deposittovault(vaultId, account0, "400@DFI")
self.nodes[0].generate(1)
self.nodes[0].takeloan({
'vaultId': vaultId,
'amounts': "2000@" + symboldUSD
})
self.nodes[0].generate(1)
poolOwner = self.nodes[0].getnewaddress("", "legacy")
# create pool DUSD-DFI
self.nodes[0].createpoolpair({
"tokenA": iddUSD,
"tokenB": idDFI,
"commission": Decimal('0.002'),
"status": True,
"ownerAddress": poolOwner,
"pairSymbol": "DUSD-DFI",
})
self.nodes[0].generate(1)
self.nodes[0].addpoolliquidity(
{account0: ["30@" + symbolDFI, "300@" + symboldUSD]}, account0)
self.nodes[0].generate(1)
# Should not be able to payback loan with BTC
assert_raises_rpc_error(-32600, "Loan token with id (1) does not exist!", self.nodes[0].paybackloan, {
'vaultId': vaultId,
'from': account0,
'amounts': "1@BTC"
})
# Should not be able to payback loan before DFI payback enabled
assert_raises_rpc_error(-32600, "Payback of loan via DFI token is not currently active", self.nodes[0].paybackloan, {
'vaultId': vaultId,
'from': account0,
'amounts': "1@DFI"
})
assert_raises_rpc_error(-5, 'Unrecognised type argument provided, valid types are: locks, oracles, params, poolpairs, token,',
self.nodes[0].setgov, {"ATTRIBUTES":{'v0/live/economy/dfi_payback_tokens':'1'}})
# Disable loan payback
self.nodes[0].setgov({"ATTRIBUTES":{'v0/token/' + iddUSD + '/payback_dfi':'false'}})
self.nodes[0].generate(1)
# Should not be able to payback loan before DFI payback enabled
assert_raises_rpc_error(-32600, "Payback of loan via DFI token is not currently active", self.nodes[0].paybackloan, {
'vaultId': vaultId,
'from': account0,
'amounts': "1@DFI"
})
# Enable loan payback
self.nodes[0].setgov({"ATTRIBUTES":{'v0/token/' + iddUSD + '/payback_dfi':'true'}})
self.nodes[0].generate(1)
vaultBefore = self.nodes[0].getvault(vaultId)
[amountBefore, _] = vaultBefore['loanAmounts'][0].split('@')
# Partial loan payback in DFI
self.nodes[0].paybackloan({
'vaultId': vaultId,
'from': account0,
'amounts': "1@DFI"
})
self.nodes[0].generate(1)
info = self.nodes[0].getburninfo()
assert_equal(info['dfipaybackfee'], Decimal('0.01000000'))
assert_equal(info['dfipaybacktokens'], ['9.90000000@DUSD'])
vaultAfter = self.nodes[0].getvault(vaultId)
[amountAfter, _] = vaultAfter['loanAmounts'][0].split('@')
[interestAfter, _] = vaultAfter['interestAmounts'][0].split('@')
assert_equal(Decimal(amountAfter) - Decimal(interestAfter), (Decimal(amountBefore) - (10 * Decimal('0.99'))))
# Test 5% penalty
self.nodes[0].setgov({"ATTRIBUTES":{'v0/token/' + iddUSD + '/payback_dfi_fee_pct':'0.05'}})
self.nodes[0].generate(1)
vaultBefore = self.nodes[0].getvault(vaultId)
[amountBefore, _] = vaultBefore['loanAmounts'][0].split('@')
# Partial loan payback in DFI
self.nodes[0].paybackloan({
'vaultId': vaultId,
'from': account0,
'amounts': "1@DFI"
})
self.nodes[0].generate(1)
info = self.nodes[0].getburninfo()
assert_equal(info['dfipaybackfee'], Decimal('0.06000000'))
assert_equal(info['dfipaybacktokens'], ['19.40000000@DUSD'])
vaultAfter = self.nodes[0].getvault(vaultId)
[amountAfter, _] = vaultAfter['loanAmounts'][0].split('@')
[interestAfter, _] = vaultAfter['interestAmounts'][0].split('@')
assert_equal(Decimal(amountAfter) - Decimal(interestAfter), (Decimal(amountBefore) - (10 * Decimal('0.95'))))
vaultBefore = vaultAfter
[balanceDFIBefore, _] = self.nodes[0].getaccount(account0)[0].split('@')
[amountBefore, _] = vaultBefore['loanAmounts'][0].split('@')
# Overpay loan payback in DFI
self.nodes[0].paybackloan({
'vaultId': vaultId,
'from': account0,
'amounts': "250@DFI"
})
self.nodes[0].generate(1)
info = self.nodes[0].getburninfo()
assert_equal(info['dfipaybackfee'], Decimal('10.48430642'))
assert_equal(info['dfipaybacktokens'], ['2000.01822015@DUSD'])
attribs = self.nodes[0].getgov('ATTRIBUTES')['ATTRIBUTES']
assert_equal(attribs['v0/live/economy/dfi_payback_tokens'], ['10.48430642@DFI', '2000.01822015@DUSD'])
vaultAfter = self.nodes[0].getvault(vaultId)
[balanceDFIAfter, _] = self.nodes[0].getaccount(account0)[0].split('@')
assert_equal(len(vaultAfter['loanAmounts']), 0)
assert_equal(len(vaultAfter['interestAmounts']), 0)
assert_equal(Decimal(balanceDFIBefore) - Decimal(balanceDFIAfter), (Decimal(amountBefore) / Decimal('9.5')).quantize(Decimal('1E-8'), rounding=ROUND_UP))
# Exact amount loan payback in DFI
# take new loan of 2000DUSD
self.nodes[0].takeloan({
'vaultId': vaultId,
'amounts': "2000@" + symboldUSD
})
self.nodes[0].generate(10)
vaultBefore = self.nodes[0].getvault(vaultId)
[amountBefore, _] = vaultBefore['loanAmounts'][0].split('@')
[balanceDFIBefore, _] = self.nodes[0].getaccount(account0)[0].split('@')
self.nodes[0].paybackloan({
'vaultId': vaultId,
'from': account0,
'amounts': "210.52871906@DFI"
})
self.nodes[0].generate(1)
info = self.nodes[0].getburninfo()
assert_equal(info['dfipaybackfee'], Decimal('21.01074237'))
assert_equal(info['dfipaybacktokens'], ['4000.04105121@DUSD'])
vaultAfter = self.nodes[0].getvault(vaultId)
[balanceDFIAfter, _] = self.nodes[0].getaccount(account0)[0].split('@')
assert_equal(len(vaultAfter['loanAmounts']), 0)
assert_equal(len(vaultAfter['interestAmounts']), 0)
assert_equal(Decimal(balanceDFIBefore) - Decimal(balanceDFIAfter), Decimal('210.52871906'))
# Payback of loan token other than DUSD
vaultId2 = self.nodes[0].createvault(account0, 'LOAN150')
self.nodes[0].generate(1)
self.nodes[0].deposittovault(vaultId2, account0, "100@DFI")
self.nodes[0].generate(1)
self.nodes[0].takeloan({
'vaultId': vaultId2,
'amounts': "10@" + symbolTSLA
})
self.nodes[0].generate(1)
# Should not be able to payback loan token other than DUSD with DFI
assert_raises_rpc_error(-32600, "There is no loan on token (DUSD) in this vault!", self.nodes[0].paybackloan, {
'vaultId': vaultId2,
'from': account0,
'amounts': "10@DFI"
})
# Multiple token payback pre FCR
# Disable loan payback
self.nodes[0].setgov({"ATTRIBUTES":{'v0/token/' + iddUSD + '/payback_dfi':'false'}})
self.nodes[0].generate(1)
vaultId6 = self.nodes[0].createvault(account0, 'LOAN150')
self.nodes[0].generate(1)
self.nodes[0].utxostoaccount({account0: "100@DFI"})
self.nodes[0].generate(1)
self.nodes[0].deposittovault(vaultId6, account0, "100@DFI")
self.nodes[0].generate(1)
self.nodes[0].generate(1)
# Create and fill addres with 10DFI + 70DUSD
self.nodes[0].utxostoaccount({account0: "11@DFI"})
self.nodes[0].generate(1)
addr_DFI_DUSD = self.nodes[0].getnewaddress("", "legacy")
toAmounts = {addr_DFI_DUSD: ["11@DFI", "71@DUSD"]}
self.nodes[0].accounttoaccount(account0, toAmounts)
self.nodes[0].generate(1)
self.nodes[0].takeloan({
'vaultId': vaultId6,
'amounts': "100@DUSD"
})
self.nodes[0].generate(1)
vaultBefore = self.nodes[0].getvault(vaultId6)
[balanceDFIBefore, _] = self.nodes[0].getaccount(addr_DFI_DUSD)[0].split('@')
[balanceDUSDBefore, _] = self.nodes[0].getaccount(addr_DFI_DUSD)[1].split('@')
assert_equal(balanceDUSDBefore, '71.00000000')
assert_equal(balanceDFIBefore, '11.00000000')
try:
self.nodes[0].paybackloan({
'vaultId': vaultId6,
'from': addr_DFI_DUSD,
'amounts': ["70@DUSD", "10@DFI"]
})
except JSONRPCException as e:
errorString = e.error['message']
assert("Payback of loan via DFI token is not currently active" in errorString)
self.nodes[0].setgov({"ATTRIBUTES":{'v0/token/' + iddUSD + '/payback_dfi':'true'}})
self.nodes[0].generate(1)
self.nodes[0].paybackloan({
'vaultId': vaultId6,
'from': addr_DFI_DUSD,
'amounts': ["70@DUSD", "10@DFI"]
})
self.nodes[0].generate(1)
vaultAfter = self.nodes[0].getvault(vaultId6)
assert_equal(vaultAfter["loanAmounts"], [])
[balanceDUSDAfter, _] = self.nodes[0].getaccount(addr_DFI_DUSD)[1].split('@')
[balanceDFIAfter, _] = self.nodes[0].getaccount(addr_DFI_DUSD)[0].split('@')
assert_equal(Decimal(balanceDUSDBefore) - Decimal(balanceDUSDAfter), Decimal('5.00022832'))
assert_equal(Decimal(balanceDFIBefore) - Decimal(balanceDFIAfter), Decimal('10'))
if __name__ == '__main__':
PaybackDFILoanTest().main()