def main():
admin = accounts[0]
alice = accounts[1]
dai = interface.IERC20Ex('0x6B175474E89094C44Da98b954EedeAC495271d0F')
weth = interface.IERC20Ex('0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2')
lp = interface.IERC20Ex('0x8b6e6e7b5b3801fed2cafd4b22b8a16c2f2db21a')
# pool is lp for balancer
pool = interface.IBalancerPool('0x8b6e6e7b5b3801fed2cafd4b22b8a16c2f2db21a')
crdai = interface.ICErc20('0x92b767185fb3b04f881e3ac8e5b0662a027a1d9f')
werc20 = WERC20.deploy({'from': admin})
simple_oracle = SimpleOracle.deploy({'from': admin})
simple_oracle.setETHPx([weth, dai], [5192296858534827628530496329220096,
8887571220661441971398610676149])
balancer_oracle = BalancerPairOracle.deploy(simple_oracle, {'from': alice})
core_oracle = CoreOracle.deploy({'from': admin})
oracle = ProxyOracle.deploy(core_oracle, {'from': admin})
oracle.setWhitelistERC1155([werc20], True, {'from': admin})
core_oracle.setRoute(
[weth, dai, lp],
[simple_oracle, simple_oracle, balancer_oracle],
{'from': admin},
)
oracle.setOracles(
[weth, dai, lp],
[
[10000, 10000, 10000],
[10000, 10000, 10000],
[10000, 10000, 10000],
],
{'from': admin},
)
homora = HomoraBank.deploy({'from': admin})
homora.initialize(oracle, 1000, {'from': admin}) # 10% fee
setup_bank_hack(homora)
homora.addBank(dai, crdai, {'from': admin})
# setup initial funds to alice
mint_tokens(dai, alice)
mint_tokens(weth, alice)
# check alice's funds
print(f'Alice weth balance {weth.balanceOf(alice)}')
print(f'Alice dai balance {dai.balanceOf(alice)}')
# Steal some LP from the staking pool
mint_tokens(lp, alice)
# set approval
dai.approve(homora, 2**256-1, {'from': alice})
dai.approve(crdai, 2**256-1, {'from': alice})
weth.approve(homora, 2**256-1, {'from': alice})
lp.approve(homora, 2**256-1, {'from': alice})
balancer_spell = BalancerSpellV1.deploy(
homora, werc20, '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2', {'from': admin})
# first time call to reduce gas
balancer_spell.getPair(lp, {'from': admin})
#####################################################################################
print('=========================================================================')
print('Case 1.')
prevABal = dai.balanceOf(alice)
prevBBal = weth.balanceOf(alice)
prevLPBal = lp.balanceOf(alice)
prevLPBal_bank = lp.balanceOf(homora)
prevLPBal_werc20 = lp.balanceOf(werc20)
prevARes = interface.IBalancerPool(lp).getBalance(dai)
prevBRes = interface.IBalancerPool(lp).getBalance(weth)
dai_amt = 40000 * 10**18
weth_amt = 10 ** 18
lp_amt = 1 * 10**16
borrow_dai_amt = 0
borrow_weth_amt = 0
# calculate slippage control
total_dai_amt = dai_amt + borrow_dai_amt
total_weth_amt = weth_amt + borrow_weth_amt
dai_weight = 0.2
weth_weight = 0.8
ratio = (((prevARes + total_dai_amt) / prevARes) ** dai_weight) * \
(((prevBRes + total_weth_amt) / prevBRes) ** weth_weight) - 1
lp_desired = lp_amt + int(interface.IERC20(lp).totalSupply() * ratio * 0.995)
print('lp desired', lp_desired)
tx = homora.execute(
0,
balancer_spell,
balancer_spell.addLiquidityWERC20.encode_input(
lp, # lp token
[dai_amt, # supply DAI
weth_amt, # supply WETH
lp_amt, # supply LP
borrow_dai_amt, # borrow DAI
borrow_weth_amt, # borrow WETH
0, # borrow LP tokens
lp_desired] # LP desired
),
{'from': alice}
)
curABal = dai.balanceOf(alice)
curBBal = weth.balanceOf(alice)
curLPBal = lp.balanceOf(alice)
curLPBal_bank = lp.balanceOf(homora)
curLPBal_werc20 = lp.balanceOf(werc20)
curARes = interface.IBalancerPool(lp).getBalance(dai)
curBRes = interface.IBalancerPool(lp).getBalance(weth)
print('spell lp balance', lp.balanceOf(balancer_spell))
print('Alice delta A balance', curABal - prevABal)
print('Alice delta B balance', curBBal - prevBBal)
print('add liquidity gas', tx.gas_used)
print('bank lp balance', curLPBal_bank)
_, _, _, daiDebt, daiShare = homora.getBankInfo(dai)
print('bank dai daiDebt', daiDebt)
print('bank dai daiShare', daiShare)
print('bank prev LP balance', prevLPBal_bank)
print('bank cur LP balance', curLPBal_bank)
print('werc20 prev LP balance', prevLPBal_werc20)
print('werc20 cur LP balance', curLPBal_werc20)
print('prev dai res', prevARes)
print('cur dai res', curARes)
print('prev weth res', prevBRes)
print('cur weth res', curBRes)
# alice
assert almostEqual(curABal - prevABal, -dai_amt), 'incorrect DAI amt'
assert almostEqual(curBBal - prevBBal, -weth_amt), 'incorrect WETH amt'
assert curLPBal - prevLPBal == -lp_amt, 'incorrect LP amt'
# spell
assert dai.balanceOf(balancer_spell) == 0, 'non-zero spell DAI balance'
assert weth.balanceOf(balancer_spell) == 0, 'non-zero spell WETH balance'
assert lp.balanceOf(balancer_spell) == 0, 'non-zero spell LP balance'
assert daiDebt == borrow_dai_amt
# check balance and pool reserves
assert almostEqual(curABal - prevABal - borrow_dai_amt, -
(curARes - prevARes)), 'not all DAI tokens go to LP pool'
assert almostEqual(curBBal - prevBBal - borrow_weth_amt, -
(curBRes - prevBRes)), 'not all WETH tokens go to LP pool'
#####################################################################################
print('=========================================================================')
print('Case 2.')
# remove liquidity from the same position
prevABal = dai.balanceOf(alice)
prevBBal = weth.balanceOf(alice)
prevETHBal = alice.balance()
prevLPBal = lp.balanceOf(alice)
prevLPBal_bank = lp.balanceOf(homora)
prevLPBal_werc20 = lp.balanceOf(werc20)
prevETHBal = alice.balance()
prevARes = interface.IBalancerPool(lp).getBalance(dai)
prevBRes = interface.IBalancerPool(lp).getBalance(weth)
lp_take_amt = 2**256-1 # max
lp_want = 1 * 10**15
dai_repay = 2**256-1 # max
weth_repay = 0
real_dai_repay = homora.borrowBalanceStored(1, dai)
_, _, _, real_lp_take_amt = homora.getPositionInfo(1)
tx = homora.execute(
1,
balancer_spell,
balancer_spell.removeLiquidityWERC20.encode_input(
lp, # LP token
[lp_take_amt, # take out LP tokens
lp_want, # withdraw LP tokens to wallet
dai_repay, # repay DAI
weth_repay, # repay WETH
0, # repay LP
0, # min DAI
0], # min WETH
),
{'from': alice}
)
# return tx
curABal = dai.balanceOf(alice)
curBBal = weth.balanceOf(alice)
curETHBal = alice.balance()
curLPBal = lp.balanceOf(alice)
curLPBal_bank = lp.balanceOf(homora)
curLPBal_werc20 = lp.balanceOf(werc20)
curETHBal = alice.balance()
curARes = interface.IBalancerPool(lp).getBalance(dai)
curBRes = interface.IBalancerPool(lp).getBalance(weth)
print('spell lp balance', lp.balanceOf(balancer_spell))
print('spell dai balance', dai.balanceOf(balancer_spell))
print('spell weth balance', weth.balanceOf(balancer_spell))
print('Alice delta A balance', curABal - prevABal)
print('Alice delta B balance', curBBal - prevBBal)
print('Alice delta ETH balance', curETHBal - prevETHBal)
print('Alice delta LP balance', curLPBal - prevLPBal)
print('remove liquidity gas', tx.gas_used)
print('bank delta lp balance', curLPBal_bank - prevLPBal_bank)
print('bank total lp balance', curLPBal_bank)
_, _, _, daiDebt, daiShare = homora.getBankInfo(dai)
print('bank dai totalDebt', daiDebt)
print('bank dai totalShare', daiShare)
print('LP want', lp_want)
print('bank delta LP amount', curLPBal_bank - prevLPBal_bank)
print('LP take amount', lp_take_amt)
print('prev werc20 LP balance', prevLPBal_werc20)
print('cur werc20 LP balance', curLPBal_werc20)
print('real dai repay', real_dai_repay)
# alice
assert almostEqual(curBBal - prevBBal, 0), 'incorrect WETH amt'
assert almostEqual(curLPBal - prevLPBal, lp_want), 'incorrect LP amt'
# werc20
assert almostEqual(curLPBal_werc20 - prevLPBal_werc20, -
real_lp_take_amt), 'incorrect werc20 LP amt'
# spell
assert dai.balanceOf(balancer_spell) == 0, 'non-zero spell DAI balance'
assert weth.balanceOf(balancer_spell) == 0, 'non-zero spell WETH balance'
assert lp.balanceOf(balancer_spell) == 0, 'non-zero spell LP balance'
# check balance and pool reserves
assert almostEqual(curABal - prevABal + real_dai_repay, -
(curARes - prevARes)), 'inconsistent DAI from withdraw'
assert almostEqual(curBBal - prevBBal,
0), 'inconsistent WETH from withdraw'
assert almostEqual(curETHBal - prevETHBal + weth_repay, -
(curBRes - prevBRes)), 'inconsistent ETH from withdraw'
return tx
def main():
admin = accounts[0]
alice = accounts[1]
bob = accounts[2]
dfd = interface.IERC20Ex('0x20c36f062a31865bED8a5B1e512D9a1A20AA333A')
dusd = interface.IERC20Ex('0x5BC25f649fc4e26069dDF4cF4010F9f706c23831')
weth = interface.IERC20Ex('0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2')
dai = interface.IERC20Ex('0x6B175474E89094C44Da98b954EedeAC495271d0F')
lp = interface.IERC20Ex('0xd8e9690eff99e21a2de25e0b148ffaf47f47c972')
# pool is lp for balancer
pool = interface.IBalancerPool(
'0xd8e9690eff99e21a2de25e0b148ffaf47f47c972')
lp_dai = interface.IERC20Ex('0x8b6e6e7b5b3801fed2cafd4b22b8a16c2f2db21a')
pool_dai = interface.IBalancerPool(
'0x8b6e6e7b5b3801fed2cafd4b22b8a16c2f2db21a')
crdfd = MockCErc20.deploy(dfd, {'from': admin})
crdusd = MockCErc20.deploy(dusd, {'from': admin})
crdai = MockCErc20.deploy(dai, {'from': admin})
crweth = MockCErc20.deploy(weth, {'from': admin})
werc20 = WERC20.deploy({'from': admin})
staking = accounts.at('0xf068236ecad5fabb9883bbb26a6445d6c7c9a924',
force=True)
wstaking = WStakingRewards.deploy(staking, lp, dfd, {'from': admin})
simple_oracle = SimpleOracle.deploy({'from': admin})
simple_oracle.setETHPx([dfd, dusd],
[2**112 // 2 // 700, 2**112 * 2 // 700])
balancer_oracle = BalancerPairOracle.deploy(simple_oracle, {'from': alice})
core_oracle = CoreOracle.deploy({'from': admin})
oracle = ProxyOracle.deploy(core_oracle, {'from': admin})
oracle.setWhitelistERC1155([werc20, wstaking], True, {'from': admin})
core_oracle.setRoute(
[dfd, dusd, lp],
[simple_oracle, simple_oracle, balancer_oracle],
{'from': admin},
)
oracle.setOracles(
[dfd, dusd, lp],
[
[10000, 10000, 10000],
[10000, 10000, 10000],
[10000, 10000, 10000],
],
{'from': admin},
)
homora = HomoraBank.deploy({'from': admin})
homora.initialize(oracle, 1000, {'from': admin}) # 10% fee
setup_bank_hack(homora)
homora.addBank(dfd, crdfd, {'from': admin})
homora.addBank(dusd, crdusd, {'from': admin})
# setup initial funds to alice
mint_tokens(dfd, alice)
mint_tokens(dusd, alice)
mint_tokens(weth, alice)
mint_tokens(dai, alice)
mint_tokens(dfd, crdfd)
# check alice's funds
print(f'Alice dusd balance {dusd.balanceOf(alice)}')
print(f'Alice dfd balance {dfd.balanceOf(alice)}')
# Steal some LP from the staking pool
mint_tokens(lp, alice)
mint_tokens(lp, bob)
# set approval
dfd.approve(homora, 2**256 - 1, {'from': alice})
dfd.approve(crdfd, 2**256 - 1, {'from': alice})
dusd.approve(homora, 2**256 - 1, {'from': alice})
dusd.approve(crdusd, 2**256 - 1, {'from': alice})
dai.approve(homora, 2**256 - 1, {'from': alice})
dai.approve(crdai, 2**256 - 1, {'from': alice})
weth.approve(homora, 2**256 - 1, {'from': alice})
weth.approve(crweth, 2**256 - 1, {'from': alice})
lp.approve(homora, 2**256 - 1, {'from': alice})
lp.approve(staking, 2**256 - 1, {'from': bob})
balancer_spell = BalancerSpellV1.deploy(
homora, werc20, '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2',
{'from': admin})
# first time call to reduce gas
balancer_spell.getPair(lp, {'from': admin})
# whitelist spell in bank
homora.setWhitelistSpells([balancer_spell], [True], {'from': admin})
# whitelist token in bank
homora.setWhitelistTokens([dfd], [True], {'from': admin})
# whitelist lp in spell
balancer_spell.setWhitelistLPTokens([lp, lp_dai], [True, True],
{'from': admin})
#####################################################################################
print(
'========================================================================='
)
print('Case 1.')
prevABal = dfd.balanceOf(alice)
prevBBal = dusd.balanceOf(alice)
prevLPBal = lp.balanceOf(alice)
prevLPBal_bank = lp.balanceOf(homora)
prevLPBal_staking = lp.balanceOf(staking)
prevARes = interface.IBalancerPool(lp).getBalance(dfd)
prevBRes = interface.IBalancerPool(lp).getBalance(dusd)
dfd_amt = 100 * 10**18
dusd_amt = 10**18
lp_amt = 0
borrow_dfd_amt = 10**18
borrow_dusd_amt = 0
# calculate slippage control
total_dfd_amt = dfd_amt + borrow_dfd_amt
total_dusd_amt = dusd_amt + borrow_dusd_amt
dfd_weight = 0.58
dusd_weight = 0.42
ratio = (((prevARes + total_dfd_amt) / prevARes) ** dfd_weight) * \
(((prevBRes + total_dusd_amt) / prevBRes) ** dusd_weight) - 1
lp_desired = lp_amt + int(
interface.IERC20(lp).totalSupply() * ratio * 0.995)
print('lp desired', lp_desired)
tx = homora.execute(
0,
balancer_spell,
balancer_spell.addLiquidityWStakingRewards.encode_input(
lp, # lp token
[
dfd_amt, # supply DFD
dusd_amt, # supply DUSD
lp_amt, # supply LP
borrow_dfd_amt, # borrow DFD
borrow_dusd_amt, # borrow DUSD
0, # borrow LP tokens
lp_desired
], # LP desired
wstaking),
{'from': alice})
curABal = dfd.balanceOf(alice)
curBBal = dusd.balanceOf(alice)
curLPBal = lp.balanceOf(alice)
curLPBal_bank = lp.balanceOf(homora)
curLPBal_staking = lp.balanceOf(staking)
curARes = interface.IBalancerPool(lp).getBalance(dfd)
curBRes = interface.IBalancerPool(lp).getBalance(dusd)
print('spell lp balance', lp.balanceOf(balancer_spell))
print('Alice delta A balance', curABal - prevABal)
print('Alice delta B balance', curBBal - prevBBal)
print('add liquidity gas', tx.gas_used)
print('bank lp balance', curLPBal_bank)
_, _, _, dfdDebt, dfdShare = homora.getBankInfo(dfd)
print('bank dfd dfdDebt', dfdDebt)
print('bank dfd dfdShare', dfdShare)
print('bank prev LP balance', prevLPBal_bank)
print('bank cur LP balance', curLPBal_bank)
print('staking prev LP balance', prevLPBal_staking)
print('staking cur LP balance', curLPBal_staking)
print('prev dfd res', prevARes)
print('cur dfd res', curARes)
print('prev dusd res', prevBRes)
print('cur dusd res', curBRes)
# alice
assert almostEqual(curABal - prevABal, -dfd_amt), 'incorrect DFD amt'
assert almostEqual(curBBal - prevBBal, -dusd_amt), 'incorrect DUSD amt'
assert curLPBal - prevLPBal == -lp_amt, 'incorrect LP amt'
# spell
assert dfd.balanceOf(balancer_spell) == 0, 'non-zero spell DFD balance'
assert dusd.balanceOf(balancer_spell) == 0, 'non-zero spell DUSD balance'
assert lp.balanceOf(balancer_spell) == 0, 'non-zero spell LP balance'
assert dfdDebt == borrow_dfd_amt
# check balance and pool reserves
assert almostEqual(
curABal - prevABal - borrow_dfd_amt,
-(curARes - prevARes)), 'not all DFD tokens go to LP pool'
assert almostEqual(
curBBal - prevBBal - borrow_dusd_amt,
-(curBRes - prevBRes)), 'not all DUSD tokens go to LP pool'
_, _, collId, collSize = homora.getPositionInfo(1)
print('collSize', collSize)
# staking directly
prevDfd = dfd.balanceOf(bob)
print('bob lp balance', interface.IERC20Ex(lp).balanceOf(bob))
tx = interface.IStakingRewards(staking).stake(collSize, {'from': bob})
chain.sleep(20000)
prevAliceDfdBalance = dfd.balanceOf(alice)
print('Alice dfd balance', prevAliceDfdBalance)
#####################################################################################
print(
'========================================================================='
)
print('Case 2. add liquidity (failed tx desired)')
weth_amt = 100 * 10**18
dai_amt = 10**18
lp_amt = 0
borrow_weth_amt = 0
borrow_dai_amt = 0
# calculate slippage control
total_weth_amt = weth_amt + borrow_weth_amt
total_dai_amt = dai_amt + borrow_dai_amt
dfd_weight = 0.8
dusd_weight = 0.2
ratio = (((prevARes + total_weth_amt) / prevARes) ** dfd_weight) * \
(((prevBRes + total_dai_amt) / prevBRes) ** dusd_weight) - 1
lp_desired = lp_amt + int(
interface.IERC20(lp).totalSupply() * ratio * 0.995)
lp_desired = 0
print('lp desired', lp_desired)
try:
tx = homora.execute(
1,
balancer_spell,
balancer_spell.addLiquidityWStakingRewards.encode_input(
lp_dai, # lp token
[
weth_amt, # supply DFD
dai_amt, # supply DUSD
lp_amt, # supply LP
borrow_weth_amt, # borrow DFD
borrow_dai_amt, # borrow DUSD
0, # borrow LP tokens
lp_desired
], # LP desired
wstaking),
{'from': alice})
assert False, 'tx should fail'
except VirtualMachineError:
pass
#####################################################################################
print(
'========================================================================='
)
print('Case 3. remove liquidity (failed tx desired)')
lp_take_amt = 2**256 - 1 # max
lp_want = 0
weth_repay = 2**256 - 1 # max
dai_repay = 2**256 - 1 # max
real_weth_repay = homora.borrowBalanceStored(1, dfd)
_, _, _, real_lp_take_amt = homora.getPositionInfo(1)
expected_withdraw_dfd = collSize * prevARes // interface.IBalancerPool(
lp).totalSupply()
print('expected withdraw DFD', expected_withdraw_dfd)
try:
tx = homora.execute(
1,
balancer_spell,
balancer_spell.removeLiquidityWStakingRewards.encode_input(
lp_dai, # LP token
[
lp_take_amt, # take out LP tokens
lp_want, # withdraw LP tokens to wallet
weth_repay, # repay DFD
dai_repay, # repay DUSD
0, # repay LP
0, # min DFD
0
], # min DUSD
wstaking),
{'from': alice})
assert False, 'tx should fail'
except VirtualMachineError:
pass
#####################################################################################
print(
'========================================================================='
)
print('Case 4. remove liquidity')
# remove liquidity from the same position
prevABal = dfd.balanceOf(alice)
prevBBal = dusd.balanceOf(alice)
prevETHBal = alice.balance()
prevLPBal = lp.balanceOf(alice)
prevLPBal_bank = lp.balanceOf(homora)
prevLPBal_staking = lp.balanceOf(staking)
prevETHBal = alice.balance()
prevCrdfdBal = lp.balanceOf(crdfd)
prevARes = interface.IBalancerPool(lp).getBalance(dfd)
prevBRes = interface.IBalancerPool(lp).getBalance(dusd)
lp_take_amt = 2**256 - 1 # max
lp_want = 0
dfd_repay = 2**256 - 1 # max
dusd_repay = 0
real_dfd_repay = homora.borrowBalanceStored(1, dfd)
_, _, _, real_lp_take_amt = homora.getPositionInfo(1)
expected_withdraw_dfd = collSize * prevARes // interface.IBalancerPool(
lp).totalSupply()
print('expected withdraw DFD', expected_withdraw_dfd)
tx = homora.execute(
1,
balancer_spell,
balancer_spell.removeLiquidityWStakingRewards.encode_input(
lp, # LP token
[
lp_take_amt, # take out LP tokens
lp_want, # withdraw LP tokens to wallet
dfd_repay, # repay DFD
dusd_repay, # repay DUSD
0, # repay LP
0, # min DFD
0
], # min DUSD
wstaking),
{'from': alice})
curABal = dfd.balanceOf(alice)
curBBal = dusd.balanceOf(alice)
curETHBal = alice.balance()
curLPBal = lp.balanceOf(alice)
curLPBal_bank = lp.balanceOf(homora)
curLPBal_staking = lp.balanceOf(staking)
curETHBal = alice.balance()
curCrdfdBal = lp.balanceOf(crdfd)
curARes = interface.IBalancerPool(lp).getBalance(dfd)
curBRes = interface.IBalancerPool(lp).getBalance(dusd)
print('spell lp balance', lp.balanceOf(balancer_spell))
print('spell dfd balance', dfd.balanceOf(balancer_spell))
print('spell dusd balance', dusd.balanceOf(balancer_spell))
print('Alice delta A balance', curABal - prevABal)
print('Alice delta B balance', curBBal - prevBBal)
print('Alice delta ETH balance', curETHBal - prevETHBal)
print('Alice delta LP balance', curLPBal - prevLPBal)
print('remove liquidity gas', tx.gas_used)
print('bank delta lp balance', curLPBal_bank - prevLPBal_bank)
print('bank total lp balance', curLPBal_bank)
_, _, _, dfdDebt, dfdShare = homora.getBankInfo(dfd)
print('bank dfd totalDebt', dfdDebt)
print('bank dfd totalShare', dfdShare)
print('LP want', lp_want)
print('bank delta LP amount', curLPBal_bank - prevLPBal_bank)
print('LP take amount', lp_take_amt)
print('prev staking LP balance', prevLPBal_staking)
print('cur staking LP balance', curLPBal_staking)
print('real dfd repay', real_dfd_repay)
print('curCrdfdBal', curCrdfdBal)
print('delta crdfd', curCrdfdBal - prevCrdfdBal)
print('A res delta', prevARes - curARes)
print('B res delta', prevBRes - curBRes)
# alice
assert almostEqual(curLPBal - prevLPBal, lp_want), 'incorrect LP amt'
# staking
assert almostEqual(curLPBal_staking - prevLPBal_staking,
-real_lp_take_amt), 'incorrect staking LP amt'
# spell
assert dfd.balanceOf(balancer_spell) == 0, 'non-zero spell DFD balance'
assert dusd.balanceOf(balancer_spell) == 0, 'non-zero spell DUSD balance'
assert lp.balanceOf(balancer_spell) == 0, 'non-zero spell LP balance'
# check balance and pool reserves
assert almostEqual(curABal - prevABal + real_dfd_repay,
-(curARes - prevARes)), 'inconsistent DFD from withdraw'
assert almostEqual(
curBBal - prevBBal + dusd_repay,
-(curBRes - prevBRes)), 'inconsistent DUSD from withdraw'
curAliceDfdBalance = dfd.balanceOf(alice)
print('Alice dfd balance', curAliceDfdBalance)
receivedDfd = curAliceDfdBalance - prevAliceDfdBalance + real_dfd_repay - (
prevARes - curARes)
print('received dfd', receivedDfd)
# check with staking directly
tx = interface.IStakingRewards(staking).getReward({'from': bob})
receivedDfdFromStaking = dfd.balanceOf(bob) - prevDfd
print('receivedDfdFromStaking', receivedDfdFromStaking)
assert almostEqual(receivedDfd, receivedDfdFromStaking)
#####################################################################################
print(
'========================================================================='
)
print('Case 5. add & remove all LP')
lp_amt = 10 * 10**18
prevLPBal = lp.balanceOf(alice)
tx = homora.execute(
0,
balancer_spell,
balancer_spell.addLiquidityWStakingRewards.encode_input(
lp, # lp token
[
0, # supply DAI
0, # supply WETH
lp_amt, # supply LP
0, # borrow DAI
0, # borrow WETH
0, # borrow LP tokens
0
], # LP desired
wstaking),
{'from': alice})
tx = homora.execute(
2,
balancer_spell,
balancer_spell.removeLiquidityWStakingRewards.encode_input(
lp, # LP token
[
2**256 - 1, # take out LP tokens
lp_amt, # withdraw LP tokens to wallet
0, # repay DAI
0, # repay WETH
0, # repay LP
0, # min DAI
0
], # min WETH
wstaking),
{'from': alice})
curLPBal = lp.balanceOf(alice)
assert prevLPBal == curLPBal, 'incorrect LP Balance'
return tx
def main():
admin = accounts[0]
alice = accounts[1]
bob = accounts[2]
dfd = interface.IERC20Ex('0x20c36f062a31865bED8a5B1e512D9a1A20AA333A')
dusd = interface.IERC20Ex('0x5BC25f649fc4e26069dDF4cF4010F9f706c23831')
lp = interface.IERC20Ex('0xd8e9690eff99e21a2de25e0b148ffaf47f47c972')
# pool is lp for balancer
pool = interface.IBalancerPool(
'0xd8e9690eff99e21a2de25e0b148ffaf47f47c972')
crdfd = MockCErc20.deploy(dfd, {'from': admin})
crdusd = MockCErc20.deploy(dusd, {'from': admin})
werc20 = WERC20.deploy({'from': admin})
staking = accounts.at('0xf068236ecad5fabb9883bbb26a6445d6c7c9a924',
force=True)
wstaking = WStakingRewards.deploy(staking, lp, dfd, {'from': admin})
simple_oracle = SimpleOracle.deploy({'from': admin})
simple_oracle.setETHPx([dfd, dusd],
[2**112 // 2 // 700, 2**112 * 2 // 700])
balancer_oracle = BalancerPairOracle.deploy(simple_oracle, {'from': alice})
core_oracle = CoreOracle.deploy({'from': admin})
oracle = ProxyOracle.deploy(core_oracle, {'from': admin})
oracle.setWhitelistERC1155([werc20, wstaking], True, {'from': admin})
core_oracle.setRoute(
[dfd, dusd, lp],
[simple_oracle, simple_oracle, balancer_oracle],
{'from': admin},
)
oracle.setOracles(
[dfd, dusd, lp],
[
[10000, 10000, 10000],
[10000, 10000, 10000],
[10000, 10000, 10000],
],
{'from': admin},
)
homora = HomoraBank.deploy({'from': admin})
homora.initialize(oracle, 1000, {'from': admin}) # 10% fee
setup_bank_hack(homora)
homora.addBank(dfd, crdfd, {'from': admin})
homora.addBank(dusd, crdusd, {'from': admin})
# setup initial funds to alice
mint_tokens(dfd, alice)
mint_tokens(dusd, alice)
# check alice's funds
print(f'Alice dusd balance {dusd.balanceOf(alice)}')
print(f'Alice dfd balance {dfd.balanceOf(alice)}')
# Steal some LP from the staking pool
mint_tokens(lp, alice)
mint_tokens(lp, bob)
# set approval
dfd.approve(homora, 2**256 - 1, {'from': alice})
dfd.approve(crdfd, 2**256 - 1, {'from': alice})
dusd.approve(homora, 2**256 - 1, {'from': alice})
dusd.approve(crdusd, 2**256 - 1, {'from': alice})
lp.approve(homora, 2**256 - 1, {'from': alice})
lp.approve(staking, 2**256 - 1, {'from': bob})
balancer_spell = BalancerSpellV1.deploy(
homora, werc20, '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2',
{'from': admin})
# first time call to reduce gas
balancer_spell.getPair(lp, {'from': admin})
#####################################################################################
print(
'========================================================================='
)
print('Case 1.')
prevABal = dfd.balanceOf(alice)
prevBBal = dusd.balanceOf(alice)
prevLPBal = lp.balanceOf(alice)
prevLPBal_bank = lp.balanceOf(homora)
prevLPBal_staking = lp.balanceOf(staking)
prevARes = interface.IBalancerPool(lp).getBalance(dfd)
prevBRes = interface.IBalancerPool(lp).getBalance(dusd)
dfd_amt = 100 * 10**18
dusd_amt = 10**18
lp_amt = 0
borrow_dfd_amt = 0
borrow_dusd_amt = 0
# calculate slippage control
total_dfd_amt = dfd_amt + borrow_dfd_amt
total_dusd_amt = dusd_amt + borrow_dusd_amt
dfd_weight = 0.58
dusd_weight = 0.42
ratio = (((prevARes + total_dfd_amt) / prevARes) ** dfd_weight) * \
(((prevBRes + total_dusd_amt) / prevBRes) ** dusd_weight) - 1
lp_desired = lp_amt + int(
interface.IERC20(lp).totalSupply() * ratio * 0.995)
print('lp desired', lp_desired)
tx = homora.execute(
0,
balancer_spell,
balancer_spell.addLiquidityWStakingRewards.encode_input(
lp, # lp token
[
dfd_amt, # supply DFD
dusd_amt, # supply DUSD
lp_amt, # supply LP
borrow_dfd_amt, # borrow DFD
borrow_dusd_amt, # borrow DUSD
0, # borrow LP tokens
lp_desired
], # LP desired
wstaking),
{'from': alice})
curABal = dfd.balanceOf(alice)
curBBal = dusd.balanceOf(alice)
curLPBal = lp.balanceOf(alice)
curLPBal_bank = lp.balanceOf(homora)
curLPBal_staking = lp.balanceOf(staking)
curARes = interface.IBalancerPool(lp).getBalance(dfd)
curBRes = interface.IBalancerPool(lp).getBalance(dusd)
print('spell lp balance', lp.balanceOf(balancer_spell))
print('Alice delta A balance', curABal - prevABal)
print('Alice delta B balance', curBBal - prevBBal)
print('add liquidity gas', tx.gas_used)
print('bank lp balance', curLPBal_bank)
_, _, _, dfdDebt, dfdShare = homora.getBankInfo(dfd)
print('bank dfd dfdDebt', dfdDebt)
print('bank dfd dfdShare', dfdShare)
print('bank prev LP balance', prevLPBal_bank)
print('bank cur LP balance', curLPBal_bank)
print('staking prev LP balance', prevLPBal_staking)
print('staking cur LP balance', curLPBal_staking)
print('prev dfd res', prevARes)
print('cur dfd res', curARes)
print('prev dusd res', prevBRes)
print('cur dusd res', curBRes)
# alice
assert almostEqual(curABal - prevABal, -dfd_amt), 'incorrect DFD amt'
assert almostEqual(curBBal - prevBBal, -dusd_amt), 'incorrect DUSD amt'
assert curLPBal - prevLPBal == -lp_amt, 'incorrect LP amt'
# spell
assert dfd.balanceOf(balancer_spell) == 0, 'non-zero spell DFD balance'
assert dusd.balanceOf(balancer_spell) == 0, 'non-zero spell DUSD balance'
assert lp.balanceOf(balancer_spell) == 0, 'non-zero spell LP balance'
assert dfdDebt == borrow_dfd_amt
# check balance and pool reserves
assert almostEqual(
curABal - prevABal - borrow_dfd_amt,
-(curARes - prevARes)), 'not all DFD tokens go to LP pool'
assert almostEqual(
curBBal - prevBBal - borrow_dusd_amt,
-(curBRes - prevBRes)), 'not all DUSD tokens go to LP pool'
_, _, collId, collSize = homora.getPositionInfo(1)
print('collSize', collSize)
# staking directly
prevDfd = dfd.balanceOf(bob)
print('bob lp balance', interface.IERC20Ex(lp).balanceOf(bob))
tx = interface.IStakingRewards(staking).stake(collSize, {'from': bob})
chain.sleep(20000)
prevAliceDfdBalance = dfd.balanceOf(alice)
print('Alice dfd balance', prevAliceDfdBalance)
#####################################################################################
print(
'========================================================================='
)
print('Case 2. add liquidity the second time')
prevABal = dfd.balanceOf(alice)
prevBBal = dusd.balanceOf(alice)
prevLPBal = lp.balanceOf(alice)
prevLPBal_bank = lp.balanceOf(homora)
prevLPBal_staking = lp.balanceOf(staking)
prevARes = interface.IBalancerPool(lp).getBalance(dfd)
prevBRes = interface.IBalancerPool(lp).getBalance(dusd)
dfd_amt = 100 * 10**18
dusd_amt = 10**18
lp_amt = 0
borrow_dfd_amt = 0
borrow_dusd_amt = 0
# calculate slippage control
total_dfd_amt = dfd_amt + borrow_dfd_amt
total_dusd_amt = dusd_amt + borrow_dusd_amt
dfd_weight = 0.58
dusd_weight = 0.42
ratio = (((prevARes + total_dfd_amt) / prevARes) ** dfd_weight) * \
(((prevBRes + total_dusd_amt) / prevBRes) ** dusd_weight) - 1
lp_desired = lp_amt + int(
interface.IERC20(lp).totalSupply() * ratio * 0.995)
print('lp desired', lp_desired)
tx = homora.execute(
1,
balancer_spell,
balancer_spell.addLiquidityWStakingRewards.encode_input(
lp, # lp token
[
dfd_amt, # supply DFD
dusd_amt, # supply DUSD
lp_amt, # supply LP
borrow_dfd_amt, # borrow DFD
borrow_dusd_amt, # borrow DUSD
0, # borrow LP tokens
lp_desired
], # LP desired
wstaking),
{'from': alice})
curABal = dfd.balanceOf(alice)
curBBal = dusd.balanceOf(alice)
curLPBal = lp.balanceOf(alice)
curLPBal_bank = lp.balanceOf(homora)
curLPBal_staking = lp.balanceOf(staking)
curARes = interface.IBalancerPool(lp).getBalance(dfd)
curBRes = interface.IBalancerPool(lp).getBalance(dusd)
print('spell lp balance', lp.balanceOf(balancer_spell))
print('Alice delta A balance', curABal - prevABal)
print('Alice delta B balance', curBBal - prevBBal)
print('add liquidity gas', tx.gas_used)
print('bank lp balance', curLPBal_bank)
_, _, _, dfdDebt, dfdShare = homora.getBankInfo(dfd)
print('bank dfd dfdDebt', dfdDebt)
print('bank dfd dfdShare', dfdShare)
print('bank prev LP balance', prevLPBal_bank)
print('bank cur LP balance', curLPBal_bank)
print('staking prev LP balance', prevLPBal_staking)
print('staking cur LP balance', curLPBal_staking)
print('prev dfd res', prevARes)
print('cur dfd res', curARes)
print('prev dusd res', prevBRes)
print('cur dusd res', curBRes)
# alice
assert almostEqual(curABal - prevABal, -dfd_amt), 'incorrect DFD amt'
assert almostEqual(curBBal - prevBBal, -dusd_amt), 'incorrect DUSD amt'
assert curLPBal - prevLPBal == -lp_amt, 'incorrect LP amt'
# spell
assert dfd.balanceOf(balancer_spell) == 0, 'non-zero spell DFD balance'
assert dusd.balanceOf(balancer_spell) == 0, 'non-zero spell DUSD balance'
assert lp.balanceOf(balancer_spell) == 0, 'non-zero spell LP balance'
assert dfdDebt == borrow_dfd_amt
# check balance and pool reserves
assert almostEqual(
curABal - prevABal - borrow_dfd_amt,
-(curARes - prevARes)), 'not all DFD tokens go to LP pool'
assert almostEqual(
curBBal - prevBBal - borrow_dusd_amt,
-(curBRes - prevBRes)), 'not all DUSD tokens go to LP pool'
curAliceDfdBalance = dfd.balanceOf(alice)
print('Alice dfd balance', curAliceDfdBalance)
receivedDfd = curAliceDfdBalance - prevAliceDfdBalance + dfd_amt
print('received dfd', receivedDfd)
# check with staking directly
tx = interface.IStakingRewards(staking).getReward({'from': bob})
receivedDfdFromStaking = dfd.balanceOf(bob) - prevDfd
print('receivedDfdFromStaking', receivedDfdFromStaking)
assert almostEqual(receivedDfd, receivedDfdFromStaking)
return tx
print(f'sending from {fro} {amt} {asset.name()} to {to}')
asset.transfer(to, amt, {'from': fro})
def main():
admin = accounts[0]
alice = accounts[1]
bob = accounts[2]
dfd = interface.IERC20Ex('0x20c36f062a31865bED8a5B1e512D9a1A20AA333A')
dusd = interface.IERC20Ex('0x5BC25f649fc4e26069dDF4cF4010F9f706c23831')
lp = interface.IERC20Ex('0xd8e9690eff99e21a2de25e0b148ffaf47f47c972')
# pool is lp for balancer
pool = interface.IBalancerPool('0xd8e9690eff99e21a2de25e0b148ffaf47f47c972')
crdfd = MockCErc20.deploy(dfd, {'from': admin})
crdusd = MockCErc20.deploy(dusd, {'from': admin})
werc20 = WERC20.deploy({'from': admin})
staking = accounts.at('0xf068236ecad5fabb9883bbb26a6445d6c7c9a924', force=True)
wstaking = WStakingRewards.deploy(staking, lp, dfd, {'from': admin})
simple_oracle = SimpleOracle.deploy({'from': admin})
simple_oracle.setETHPx([dfd, dusd], [2**112 // 2 // 700, 2**112 * 2 // 700])
balancer_oracle = BalancerPairOracle.deploy(simple_oracle, {'from': alice})
