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Allow higher collateral factor (#1452)
* Add FortCanningEpilogue fork * Allow higher collateral factor * Test fix: apply scheme check after fork * Test error before scheme set * Test: Change error code Co-authored-by: Prasanna Loganathar <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| #!/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 DUSD collateral factor.""" | ||
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| from test_framework.test_framework import DefiTestFramework | ||
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| from test_framework.util import assert_equal, assert_raises_rpc_error | ||
| from decimal import Decimal | ||
| import time | ||
|
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| class DUSDCollateralFactorTest(DefiTestFramework): | ||
| def set_test_params(self): | ||
| self.num_nodes = 1 | ||
| self.setup_clean_chain = True | ||
| self.extra_args = [['-txnotokens=0', '-amkheight=1', '-bayfrontheight=1', '-bayfrontgardensheight=1', '-eunosheight=1', '-txindex=1', '-fortcanningheight=1', '-fortcanningroadheight=1', '-fortcanninghillheight=1', '-fortcanningcrunchheight=1', '-fortcanninggreatworldheight=1', '-fortcanningepilogueheight=200', '-jellyfish_regtest=1']] | ||
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| def run_test(self): | ||
| # Setup | ||
| self.setup() | ||
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| # Test setting of DUSD collateral factor | ||
| self.set_collateral_factor() | ||
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| # Test new factor when taking DUSD loan | ||
| self.take_dusd_loan() | ||
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| # Test with multiple loan tokens | ||
| self.take_multiple_loans() | ||
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| def setup(self): | ||
| # Generate chain | ||
| self.nodes[0].generate(120) | ||
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| # Get MN address | ||
| self.address = self.nodes[0].get_genesis_keys().ownerAuthAddress | ||
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| # Token symbols | ||
| self.symbolDFI = "DFI" | ||
| self.symbolDUSD = "DUSD" | ||
| self.symbolTSLA = "TSLA" | ||
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| # Create Oracle address | ||
| oracle_address = self.nodes[0].getnewaddress("", "legacy") | ||
|
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| # Define price feeds | ||
| price_feed = [ | ||
| {"currency": "USD", "token": f"{self.symbolDFI}"}, | ||
| {"currency": "USD", "token": f"{self.symbolTSLA}"}, | ||
| ] | ||
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| # Appoint Oracle | ||
| oracle = self.nodes[0].appointoracle(oracle_address, price_feed, 10) | ||
| self.nodes[0].generate(1) | ||
|
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| # Set Oracle prices | ||
| oracle_prices = [ | ||
| {"currency": "USD", "tokenAmount": f"1@{self.symbolDFI}"}, | ||
| {"currency": "USD", "tokenAmount": f"1@{self.symbolTSLA}"}, | ||
| ] | ||
| self.nodes[0].setoracledata(oracle, int(time.time()), oracle_prices) | ||
| self.nodes[0].generate(10) | ||
|
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| # Create loan tokens | ||
| self.nodes[0].setloantoken({ | ||
| 'symbol': self.symbolDUSD, | ||
| 'name': self.symbolDUSD, | ||
| 'fixedIntervalPriceId': f"{self.symbolDUSD}/USD", | ||
| 'mintable': True, | ||
| 'interest': -1 | ||
| }) | ||
| self.nodes[0].generate(1) | ||
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| self.nodes[0].setloantoken({ | ||
| 'symbol': self.symbolTSLA, | ||
| 'name': self.symbolTSLA, | ||
| 'fixedIntervalPriceId': f"{self.symbolTSLA}/USD", | ||
| 'mintable': True, | ||
| 'interest': -1 | ||
| }) | ||
| self.nodes[0].generate(1) | ||
|
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| # Set collateral tokens | ||
| self.nodes[0].setcollateraltoken({ | ||
| 'token': self.symbolDFI, | ||
| 'factor': 1, | ||
| 'fixedIntervalPriceId': f'{self.symbolDFI}/USD' | ||
| }) | ||
| self.nodes[0].generate(1) | ||
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| self.nodes[0].setcollateraltoken({ | ||
| 'token': self.symbolDUSD, | ||
| 'factor': 1, | ||
| 'fixedIntervalPriceId': f'{self.symbolDFI}/USD' | ||
| }) | ||
| self.nodes[0].generate(1) | ||
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| # Store DUSD ID | ||
| self.idDUSD = list(self.nodes[0].gettoken(self.symbolDUSD).keys())[0] | ||
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| # Mint DUSD | ||
| self.nodes[0].minttokens("100000@DUSD") | ||
| self.nodes[0].generate(1) | ||
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| # Create DFI tokens | ||
| self.nodes[0].utxostoaccount({self.address: "100000@" + self.symbolDFI}) | ||
| self.nodes[0].generate(1) | ||
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| def set_collateral_factor(self): | ||
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| # Test setting new token factor before fork | ||
| assert_raises_rpc_error(-32600, "Percentage exceeds 100%", self.nodes[0].setgov, {"ATTRIBUTES":{f'v0/token/{self.idDUSD}/loan_collateral_factor': '1.49'}}) | ||
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| # Move to fork | ||
| self.nodes[0].generate(200 - self.nodes[0].getblockcount()) | ||
|
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| # Test setting before scheme set | ||
| assert_raises_rpc_error(-32600, "Set loan scheme before setting collateral factor", self.nodes[0].setgov, {"ATTRIBUTES":{f'v0/token/{self.idDUSD}/loan_collateral_factor': '1.50'}}) | ||
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| # Create loan scheme | ||
| self.nodes[0].createloanscheme(150, 1, 'LOAN001') | ||
| self.nodes[0].generate(1) | ||
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| # Test setting higher than the lowest scheme rate | ||
| assert_raises_rpc_error(-32600, "Factor cannot be more than or equal to the lowest scheme rate of 1.50000000", self.nodes[0].setgov, {"ATTRIBUTES":{f'v0/token/{self.idDUSD}/loan_collateral_factor': '1.50'}}) | ||
|
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| # Now set new token factor | ||
| self.nodes[0].setgov({"ATTRIBUTES":{f'v0/token/{self.idDUSD}/loan_collateral_factor': '1.49'}}) | ||
| self.nodes[0].generate(1) | ||
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| # Check results | ||
| attributes = self.nodes[0].getgov('ATTRIBUTES')['ATTRIBUTES'] | ||
| assert_equal(attributes['v0/token/1/loan_collateral_factor'], '1.49') | ||
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| def take_dusd_loan(self): | ||
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| # Create vault | ||
| vault_address = self.nodes[0].getnewaddress('', 'legacy') | ||
| vault_id = self.nodes[0].createvault(vault_address, 'LOAN001') | ||
| self.nodes[0].generate(1) | ||
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| # Deposit DUSD and DFI to vault | ||
| self.nodes[0].deposittovault(vault_id, self.address, f"1.5@{self.symbolDFI}") | ||
| self.nodes[0].generate(1) | ||
| self.nodes[0].deposittovault(vault_id, self.address, f"1.5@{self.symbolDUSD}") | ||
| self.nodes[0].generate(1) | ||
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| # Take DUSD loan greater than collateral amount | ||
| self.nodes[0].takeloan({ "vaultId": vault_id, "amounts": f"2.49@{self.symbolDUSD}"}) | ||
| self.nodes[0].generate(1) | ||
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| # Check that we are on 150% collateral ratio | ||
| vault = self.nodes[0].getvault(vault_id) | ||
| assert_equal(vault['collateralRatio'], 150) | ||
| assert_equal(vault['informativeRatio'], Decimal('150.00000000')) | ||
| assert_equal(vault['collateralValue'], Decimal('3.73500000')) | ||
| assert_equal(vault['loanValue'], Decimal('2.49000000')) | ||
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| def take_multiple_loans(self): | ||
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| # Create vault | ||
| vault_address = self.nodes[0].getnewaddress('', 'legacy') | ||
| vault_id = self.nodes[0].createvault(vault_address, 'LOAN001') | ||
| self.nodes[0].generate(1) | ||
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| # Deposit DUSD and DFI to vault | ||
| self.nodes[0].deposittovault(vault_id, self.address, f"1.5@{self.symbolDFI}") | ||
| self.nodes[0].generate(1) | ||
| self.nodes[0].deposittovault(vault_id, self.address, f"1.5@{self.symbolDUSD}") | ||
| self.nodes[0].generate(1) | ||
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| # Take TSLA loan for half the available ratio | ||
| self.nodes[0].takeloan({ "vaultId": vault_id, "amounts": f"1@{self.symbolTSLA}"}) | ||
| self.nodes[0].generate(1) | ||
|
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| # Check that we are on 300% collateral ratio | ||
| vault = self.nodes[0].getvault(vault_id) | ||
| assert_equal(vault['collateralRatio'], 374) | ||
| assert_equal(vault['informativeRatio'], Decimal('373.50000000')) | ||
| assert_equal(vault['collateralValue'], Decimal('3.73500000')) | ||
| assert_equal(vault['loanValue'], Decimal('1.00000000')) | ||
|
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| # Take a DUSD loan | ||
| self.nodes[0].takeloan({ "vaultId": vault_id, "amounts": f"1@{self.symbolDUSD}"}) | ||
| self.nodes[0].generate(1) | ||
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| # Check that vault still has capacity to take more loans | ||
| vault = self.nodes[0].getvault(vault_id) | ||
| assert_equal(vault['loanValue'], Decimal('2.00000000')) | ||
| assert_equal(vault['collateralValue'], Decimal('3.73500000')) | ||
| assert_equal(vault['informativeRatio'], Decimal('186.75000000')) | ||
| assert_equal(vault['collateralRatio'], 187) | ||
|
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| if __name__ == '__main__': | ||
| DUSDCollateralFactorTest().main() | ||
|
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