Test whether DUSD can be used as collateral

test/functional/feature_loan_dusd_as_collateral.py

@@ -0,0 +1,103 @@
+#!/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 - DUSD as collateral."""
+
+from test_framework.test_framework import DefiTestFramework
+
+from test_framework.util import assert_equal, assert_raises_rpc_error
+import time
+
+class LoanDUSDCollateralTest (DefiTestFramework):
+    def set_test_params(self):
+        self.num_nodes = 1
+        self.setup_clean_chain = True
+        self.extra_args = [
+            ['-txnotokens=0', '-amkheight=50', '-bayfrontheight=50', '-fortcanningheight=50', '-fortcanninghillheight=500', '-eunosheight=50', '-txindex=1']]
+
+    def run_test(self):
+        assert_equal(len(self.nodes[0].listtokens()), 1) # only one token == DFI
+        print("Generating initial chain...")
+        self.nodes[0].generate(120)
+
+        symbolDFI = "DFI"
+        symbolDUSD = "DUSD"
+
+        self.nodes[0].setloantoken({
+            'symbol': "DUSD",
+            'name': "DUSD",
+            'fixedIntervalPriceId': "DUSD/USD",
+            'mintable': True,
+            'interest': 0
+        })
+        self.nodes[0].generate(1)
+
+        oracleAddress = self.nodes[0].getnewaddress("", "legacy")
+        price_feeds1 = [
+            {"currency": "USD", "token": "DFI"}
+        ]
+        oracle_id1 = self.nodes[0].appointoracle(oracleAddress, price_feeds1, 10)
+        self.nodes[0].generate(1)
+
+        oracle1_prices = [
+            {"currency": "USD", "tokenAmount": "1@DFI"},
+        ]
+        mock_time = int(time.time())
+        self.nodes[0].setmocktime(mock_time)
+        self.nodes[0].setoracledata(oracle_id1, mock_time, oracle1_prices)
+
+        self.nodes[0].generate(1)
+
+        self.nodes[0].setcollateraltoken({
+                                    'token': symbolDFI,
+                                    'factor': 1,
+                                    'fixedIntervalPriceId': "DFI/USD"
+                                    })
+
+        tokenFactorDUSD = 0.9
+        activateAfterBlock = self.nodes[0].getblockcount() + 50
+        self.nodes[0].setcollateraltoken({
+                                    'token': "DUSD",
+                                    'factor': tokenFactorDUSD,
+                                    'fixedIntervalPriceId': "DUSD/USD",
+                                    'activateAfterBlock': activateAfterBlock
+                                    })
+        self.nodes[0].generate(1)
+
+        self.nodes[0].createloanscheme(200, 1, 'LOAN001')
+        self.nodes[0].generate(1)
+
+        vaultAddress = self.nodes[0].getnewaddress('', 'legacy')
+        vaultId = self.nodes[0].createvault(vaultAddress, 'LOAN001')
+        self.nodes[0].generate(1)
+
+        amountDFI = 500
+        amountDUSD = 250
+
+        self.nodes[0].utxostoaccount({vaultAddress: str(amountDFI) + "@" + symbolDFI})
+        self.nodes[0].generate(1)
+
+        self.nodes[0].deposittovault(vaultId, vaultAddress, str(amountDFI) + "@" + symbolDFI)
+        self.nodes[0].generate(1)
+
+        self.nodes[0].takeloan({ "vaultId": vaultId, "amounts": str(amountDUSD) + "@" + symbolDUSD })
+        self.nodes[0].generate(1)
+
+        # DUSD is not active as a collateral token yet
+        assert_raises_rpc_error(-32600, "Collateral token with id (1) does not exist!", self.nodes[0].deposittovault, vaultId, vaultAddress, str(amountDUSD) + "@" + symbolDUSD)
+
+        self.nodes[0].generate(50) # Activates DUSD as collateral token
+
+        # Should be able to deposit DUSD to vault
+        self.nodes[0].deposittovault(vaultId, vaultAddress, str(amountDUSD) + "@" + symbolDUSD)
+        self.nodes[0].generate(1)
+
+        vault = self.nodes[0].getvault(vaultId)
+
+        assert("DUSD" in vault['collateralAmounts'][1])
+        assert_equal(vault['collateralValue'], amountDUSD * tokenFactorDUSD + amountDFI)
+
+if __name__ == '__main__':
+    LoanDUSDCollateralTest().main()

test/functional/test_runner.py

@@ -163,6 +163,7 @@
     'feature_loan_basics.py',
     'feature_loan_listauctions.py',
     'feature_loan_auctions.py',
+    'feature_loan_dusd_as_collateral.py',
     'feature_any_accounts_to_accounts.py',
     'feature_sendtokenstoaddress.py',
     'feature_poolswap.py',