fixup! contracts: migration simulation: Test migration simulation

README.md

@@ -618,7 +618,8 @@ brownie pm install OpenZeppelin/[email protected]
 
 Run, from `packages/contracts/`:
 ```
-brownie test -s
+brownie test tests/simulation_test.py -s
+brownie test tests/migration_test.py -s
 ```
 
 ### OpenEthereum
@@ -644,7 +645,8 @@ yarn start-dev-chain:openethereum
 
 Then, again from `packages/contracts/`, run it with:
 ```
-brownie test -s --network openethereum
+brownie test tests/simulation_test.py -s --network openethereum
+brownie test tests/migration_test.py -s --network openethereum
 ```
 
 To stop the Openethereum node, you can do it with:

packages/contracts/tests/helpers.py

@@ -1,11 +1,14 @@
-from brownie import Wei
+import pytest
 
-from helpers import *
+from brownie import *
+from accounts import *
 
 ZERO_ADDRESS = '0x' + '0'.zfill(40)
 MAX_BYTES_32 = '0x' + 'F' * 64
 MAX_FEE = Wei(1e18)
 
+class Contracts: pass
+
 def floatToWei(amount):
     return Wei(amount * 1e18)
 
@@ -127,8 +130,7 @@ def setAddresses(contracts):
         { 'from': accounts[0] }
     )
 
-@pytest.fixture
-def contracts():
+def deploy_contracts():
     contracts = Contracts()
 
     contracts.priceFeedTestnet = PriceFeedTestnet.deploy({ 'from': accounts[0] })
@@ -155,8 +157,8 @@ def contracts():
         contracts.communityIssuance.address,
         contracts.lqtyStaking.address,
         contracts.lockupContractFactory.address,
-        accounts[0], # bountyAddress
-        accounts[0],  # lpRewardsAddress
+        accounts[1], # bountyAddress
+        accounts[1],  # lpRewardsAddress
         { 'from': accounts[0] }
     )
 

packages/contracts/tests/migration_helpers.py

@@ -7,26 +7,37 @@
 ETHER_PRICE = Wei(1000 * 1e18)
 
 def flesh_out_system(accounts, contracts):
+    LUSD_GAS_COMPENSATION = contracts.troveManager.LUSD_GAS_COMPENSATION()
+
     MIN_NET_DEBT = contracts.troveManager.MIN_NET_DEBT()
-    MIN_LUSD_AMOUNT = contracts.troveManager.getBorrowingFeeWithDecay(MIN_NET_DEBT)
+    borrowing_rate = contracts.troveManager.getBorrowingRateWithDecay()
+    MIN_LUSD_AMOUNT = Wei(MIN_NET_DEBT * Wei(1e18) / (Wei(1e18) + borrowing_rate)) + Wei(1e18)
 
     # Account 0 will always be the last one, as one has to remain in the system
-    collateral = MIN_LUSD_AMOUNT * 3 / ETHER_PRICE # ICR: 300%
+    collateral = Wei(MIN_NET_DEBT * 6 * 1e18 / ETHER_PRICE) # ICR: ~600% (missing gas reserve)
     contracts.borrowerOperations.openTrove(MAX_FEE, MIN_LUSD_AMOUNT, ZERO_ADDRESS, ZERO_ADDRESS,
                                            { 'from': accounts[0], 'value': collateral })
 
     # send 1 lqty token to account 1 (deployer cannot stake during 1st year),
-    # so it can stake and earn borrowing fees
-    contracts.lqtyToken.transfer(accounts[1], 1, { 'from': accounts[0] })
+    #contracts.lqtyToken.transfer(accounts[1], 1, { 'from': accounts[0] })
+    # account 1 stakes to earn borrowing fees
     contracts.lqtyStaking.stake(1, { 'from': accounts[1] })
 
     # open trove in ICR descending order
     ICR = 500
     for i in range(1, 1000):
-        lusdAmount = MIN_LUSD_AMOUNT + floatToWei(1000000 * random.random()) # lusd ranging from min to 1M
-        ICR = ICR - 0.38 * random.random() # last trove ICR should be at ~ 500 - 999*0.38 = 120.38
-        coll = lusdAmount * floatToWei(ICR / 100) / Wei(1e18) / ETHER_PRICE
-        contracts.borrowerOperations.openTrove(MAX_FEE, lusdAmount, accounts[i-1], ZERO_ADDRESS,
+        lusd_amount = MIN_LUSD_AMOUNT + floatToWei(1000000 * random.random()) # lusd ranging from min to 1M
+        borrowing_fee = contracts.troveManager.getBorrowingFeeWithDecay(lusd_amount)
+        ICR = ICR - 0.76 * random.random() # last trove ICR should be at ~ 500 - 999*0.76*0.5 = 120.38
+        coll = Wei((lusd_amount + borrowing_fee + LUSD_GAS_COMPENSATION) * floatToWei(ICR / 100) / ETHER_PRICE)
+        """
+        print(f"i: {i}")
+        print(f"account: {accounts[i]}")
+        print(f"ICR: {ICR}")
+        print(f"coll: {coll}")
+        print(f"debt: {lusd_amount}")
+        """
+        contracts.borrowerOperations.openTrove(MAX_FEE, lusd_amount, accounts[i-1], ZERO_ADDRESS,
                                                { 'from': accounts[i], 'value': coll })
 
 def get_lusd_to_repay(accounts, contracts, account, debt):
@@ -44,7 +55,7 @@ def get_lusd_to_repay(accounts, contracts, account, debt):
         contracts.lusdToken.transfer(account, pending, { 'from': accounts[1] })
 
 def migrate_trove(accounts, contracts1, contracts2, i):
-    [debt, coll] = contracts.troveManager.getEntireDebtAndColl(account)[0]
+    [debt, coll] = contracts1.troveManager.getEntireDebtAndColl(account)[0]
     get_lusd_to_repay(accounts, contracts1, accounts[i], debt)
     # open trove in old system
     contracts1.borrowerOperations.closeTrove({ 'from': accounts[i] })

packages/contracts/tests/migration_test.py

@@ -1,42 +1,50 @@
 import pytest
 
 from helpers import *
-from simulation_helpers import *
+from migration_helpers import *
 
 def setup():
-    contracts1 = contracts()
-    flesh_out_system(contracts1)
+    contracts1 = deploy_contracts()
+    contracts1.priceFeedTestnet.setPrice(ETHER_PRICE, { 'from': accounts[0] })
+
+    flesh_out_system(accounts, contracts1)
 
     logGlobalState(contracts1)
 
-    contracts2 = contracts()
+    contracts2 = deploy_contracts()
+    contracts2.priceFeedTestnet.setPrice(ETHER_PRICE, { 'from': accounts[0] })
+
     logGlobalState(contracts2)
 
     return [contracts1, contracts2]
 
 def test_run_migration_desc(add_accounts):
-    [contracts1, contracts2] = setup
+    [contracts1, contracts2] = setup()
 
     # migrate troves in ICR descending order
-    run_migration_desc()
+    run_migration_desc(accounts, contracts1, contracts2)
 
     logGlobalState(contracts1)
     logGlobalState(contracts2)
 
+'''
 def test_run_migration_asc(add_accounts):
-    [contracts1, contracts2] = setup
+    [contracts1, contracts2] = setup()
 
     # migrate troves in ICR ascending order
-    run_migration_asc()
+    run_migration_asc(accounts, contracts1, contracts2)
 
     logGlobalState(contracts1)
     logGlobalState(contracts2)
 
 def test_run_migration_rand(add_accounts):
-    [contracts1, contracts2] = setup
+    [contracts1, contracts2] = setup()
 
     # migrate troves in ICR random order
-    run_migration_rand()
+    run_migration_rand(accounts, contracts1, contracts2)
 
     logGlobalState(contracts1)
     logGlobalState(contracts2)
+'''
+
+# TODO: try with only redemptions

packages/contracts/tests/simulation_test.py

@@ -1,12 +1,10 @@
 import pytest
 
 from brownie import *
-from accounts import *
+
 from helpers import *
 from simulation_helpers import *
 
-class Contracts: pass
-
 @pytest.fixture
 def print_expectations():
     ether_price_one_year = price_ether_initial * (1 + drift_ether)**8760
@@ -21,6 +19,10 @@ def print_expectations():
     print("SD(tau)     = ", rational_inattention_gamma_k**(0.5) * rational_inattention_gamma_theta * 100, "%")
     print("\n")
 
+@pytest.fixture
+def contracts():
+    return deploy_contracts()
+
 def _test_test(contracts):
     print(len(accounts))
     contracts.borrowerOperations.openTrove(Wei(1e18), Wei(2000e18), ZERO_ADDRESS, ZERO_ADDRESS,