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pool.py
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import smartpy as sp
Token= sp.import_script_from_url("file:token.py")
################################################################
################################################################
# CONSTANTS
################################################################
################################################################
# The number of decimals of precision.
PRECISION = 1000000000000000000 # 18 decimals
################################################################
################################################################
# STATE MACHINE STATES
################################################################
################################################################
IDLE = 0
WAITING_UPDATE_BALANCE = 1
WAITING_REDEEM = 2
WAITING_DEPOSIT = 3
################################################################
################################################################
# CONTRACT
################################################################
################################################################
Addresses = sp.import_script_from_url("file:./test-helpers/addresses.py")
class PoolContract(Token.FA12):
def __init__(
self,
# Parent class fields
administrator = Addresses.ADMIN_ADDRESS,
paused = False,
# The address of the token contract which will be deposited.
tokenAddress = Addresses.TOKEN_ADDRESS,
# The address of the Quipuswap contract.
quipuswapAddress = Addresses.QUIPUSWAP_ADDRESS,
# The address of the Oven Registry contract.
ovenRegistryAddress = Addresses.OVEN_REGISTRY_ADDRESS,
# The governor of the pool.
governorAddress = Addresses.GOVERNOR_ADDRESS,
# How much of the payout to reward the liquidator with.
rewardPercent = sp.nat(1), # 1%
# The block which rewards can be changed after.
rewardChangeAllowedLevel = sp.nat(0),
# The initial state of the state machine.
state = IDLE,
# State machine states - exposed for testing.
savedState_tokensToRedeem = sp.none,
savedState_redeemer = sp.none,
savedState_tokensToDeposit = sp.none,
savedState_depositor = sp.none,
):
token_id = sp.nat(0)
token_metadata = sp.map(
l = {
"name": sp.bytes('0x517569707573776170204c69717569646174696e67206b555344'), # Quipuswap Liquidating kUSD
"decimals": sp.bytes('0x3336'), # 36
"symbol": sp.bytes('0x514c6b555344'), # QLkUSD
"icon": sp.bytes('0x2068747470733a2f2f6b6f6c696272692d646174612e73332e616d617a6f6e6177732e636f6d2f6c6f676f2e706e67') # https://kolibri-data.s3.amazonaws.com/logo.png
},
tkey = sp.TString,
tvalue = sp.TBytes
)
token_entry = (token_id, token_metadata)
token_metadata = sp.big_map(
l = {
token_id: token_entry,
},
tkey = sp.TNat,
tvalue = sp.TPair(sp.TNat, sp.TMap(sp.TString, sp.TBytes))
)
metadata_data = sp.bytes_of_string('{ "name": "Quipuswap Liquidating kUSD", "description": "kUSD Liquidation Pool tied to Quipuswap", "authors": ["Hover Labs <[email protected]>"], "homepage": "https://kolibri.finance", "interfaces": [ "TZIP-007-2021-01-29"] }')
metadata = sp.big_map(
l = {
"": sp.bytes('0x74657a6f732d73746f726167653a64617461'), # "tezos-storage:data"
"data": metadata_data
},
tkey = sp.TString,
tvalue = sp.TBytes
)
self.exception_optimization_level = "debug-message"
self.init(
# Parent class fields
balances = sp.big_map(tvalue = sp.TRecord(approvals = sp.TMap(sp.TAddress, sp.TNat), balance = sp.TNat)),
totalSupply = 0,
# Metadata
metadata = metadata,
token_metadata = token_metadata,
# Addresses
quipuswapAddress = quipuswapAddress,
governorAddress = governorAddress,
ovenRegistryAddress = ovenRegistryAddress,
tokenAddress = tokenAddress,
# Configuration paramaters
rewardPercent = rewardPercent,
rewardChangeAllowedLevel = rewardChangeAllowedLevel,
# State machinge
state = state,
savedState_tokensToRedeem = savedState_tokensToRedeem, # Amount of tokens to redeem, populated when state = WAITING_REDEEM
savedState_redeemer = savedState_redeemer, # Account redeeming tokens, populated when state = WAITING_REDEEM
savedState_tokensToDeposit = savedState_tokensToDeposit, # Amount of tokens to deposit, populated when state = WAITING_DEPOSIT
savedState_depositor = savedState_depositor, # Account depositing the tokens, populated when state = WAITING_DEPOSIT
)
################################################################
# Liquidation Functions
################################################################
# Accept XTZ and immediately swap them for kUSD on Quipuswap.
@sp.entry_point
def default(self, unit):
sp.set_type(unit, sp.TUnit)
# Reward the user who called this transaction.
rewardAmount = sp.split_tokens(sp.amount, self.data.rewardPercent, 100)
sp.send(sp.source, rewardAmount)
# Invoke Quipuswap.
remainingBalance = sp.balance - rewardAmount
tradeParam = (
1, # Min amount to receive
sp.self_address, # To param
)
tradeHandle = sp.contract(
sp.TPair(sp.TNat, sp.TAddress),
self.data.quipuswapAddress,
"tezToTokenPayment"
).open_some()
sp.transfer(tradeParam, remainingBalance, tradeHandle)
# Liquidate an oven.
@sp.entry_point
def liquidate(self, targetAddress):
sp.set_type(targetAddress, sp.TAddress)
# Validate that the target is an oven.
isOvenHandle = sp.contract(
sp.TAddress,
self.data.ovenRegistryAddress,
"isOven"
).open_some()
sp.transfer(targetAddress, sp.mutez(0), isOvenHandle)
# Send a liquidation to the oven.
liquidateHandle = sp.contract(
sp.TUnit,
targetAddress,
"liquidate"
).open_some()
sp.transfer(sp.unit, sp.mutez(0), liquidateHandle)
################################################################
# Liquidity Provider Tokens
################################################################
# Deposit a number of tokens and receive LP tokens.
@sp.entry_point
def deposit(self, tokensToDeposit):
sp.set_type(tokensToDeposit, sp.TNat)
# Validate state
sp.verify(self.data.state == IDLE, "BAD_STATE")
# Save state
self.data.state = WAITING_DEPOSIT
self.data.savedState_tokensToDeposit = sp.some(tokensToDeposit)
self.data.savedState_depositor = sp.some(sp.sender)
# Call token contract to update balance.
param = (sp.self_address, sp.self_entry_point(entry_point = 'deposit_callback'))
contractHandle = sp.contract(
sp.TPair(sp.TAddress, sp.TContract(sp.TNat)),
self.data.tokenAddress,
"getBalance",
).open_some()
sp.transfer(param, sp.mutez(0), contractHandle)
# Private callback for redeem.
@sp.entry_point
def deposit_callback(self, updatedBalance):
sp.set_type(updatedBalance, sp.TNat)
# Validate sender
sp.verify(sp.sender == self.data.tokenAddress, "BAD_SENDER")
# Validate state
sp.verify(self.data.state == WAITING_DEPOSIT, "BAD_STATE")
# Calculate the tokens to issue.
tokensToDeposit = sp.local('tokensToDeposit', self.data.savedState_tokensToDeposit.open_some())
newTokens = sp.local('newTokens', tokensToDeposit.value * PRECISION)
sp.if self.data.totalSupply != sp.nat(0):
newUnderlyingBalance = sp.local('newUnderlyingBalance', updatedBalance + tokensToDeposit.value)
fractionOfPoolOwnership = sp.local('fractionOfPoolOwnership', (tokensToDeposit.value * PRECISION) / newUnderlyingBalance.value)
newTokens.value = ((fractionOfPoolOwnership.value * self.data.totalSupply) / (sp.as_nat(PRECISION - fractionOfPoolOwnership.value)))
# Transfer tokens to this contract.
depositor = sp.local('depositor', self.data.savedState_depositor.open_some())
tokenTransferParam = sp.record(
from_ = depositor.value,
to_ = sp.self_address,
value = tokensToDeposit.value
)
transferHandle = sp.contract(
sp.TRecord(from_ = sp.TAddress, to_ = sp.TAddress, value = sp.TNat).layout(("from_ as from", ("to_ as to", "value"))),
self.data.tokenAddress,
"transfer"
).open_some()
sp.transfer(tokenTransferParam, sp.mutez(0), transferHandle)
# Mint tokens to the depositor
tokenMintParam = sp.record(
address = depositor.value,
value = newTokens.value
)
mintHandle = sp.contract(
sp.TRecord(address = sp.TAddress, value = sp.TNat).layout(("address", "value")),
sp.self_address,
entry_point = 'mint',
).open_some()
sp.transfer(tokenMintParam, sp.mutez(0), mintHandle)
# Reset state
self.data.state = IDLE
self.data.savedState_tokensToDeposit = sp.none
self.data.savedState_depositor = sp.none
# Redeem a number of LP tokens for the underlying asset.
@sp.entry_point
def redeem(self, tokensToRedeem):
sp.set_type(tokensToRedeem, sp.TNat)
# Validate state
sp.verify(self.data.state == IDLE, "BAD_STATE")
# Save state
self.data.state = WAITING_REDEEM
self.data.savedState_tokensToRedeem = sp.some(tokensToRedeem)
self.data.savedState_redeemer = sp.some(sp.sender)
# Call token contract to update balance.
param = (sp.self_address, sp.self_entry_point(entry_point = 'redeem_callback'))
contractHandle = sp.contract(
sp.TPair(sp.TAddress, sp.TContract(sp.TNat)),
self.data.tokenAddress,
"getBalance",
).open_some()
sp.transfer(param, sp.mutez(0), contractHandle)
# Private callback for redeem.
@sp.entry_point
def redeem_callback(self, updatedBalance):
sp.set_type(updatedBalance, sp.TNat)
# Validate sender
sp.verify(sp.sender == self.data.tokenAddress, "BAD_SENDER")
# Validate state
sp.verify(self.data.state == WAITING_REDEEM, "BAD_STATE")
# Calculate tokens to receive.
tokensToRedeem = sp.local('tokensToRedeem', self.data.savedState_tokensToRedeem.open_some())
fractionOfPoolOwnership = sp.local('fractionOfPoolOwnership', (tokensToRedeem.value * PRECISION) / self.data.totalSupply)
tokensToReceive = sp.local('tokensToReceive', (fractionOfPoolOwnership.value * updatedBalance) / PRECISION)
# Burn the tokens being redeemed.
redeemer = sp.local('redeemer', self.data.savedState_redeemer.open_some())
tokenBurnParam = sp.record(
address = redeemer.value,
value = tokensToRedeem.value
)
burnHandle = sp.contract(
sp.TRecord(address = sp.TAddress, value = sp.TNat).layout(("address", "value")),
sp.self_address,
entry_point = 'burn',
).open_some()
sp.transfer(tokenBurnParam, sp.mutez(0), burnHandle)
# Transfer tokens to the owner.
tokenTransferParam = sp.record(
from_ = sp.self_address,
to_ = redeemer.value,
value = tokensToReceive.value
)
transferHandle = sp.contract(
sp.TRecord(from_ = sp.TAddress, to_ = sp.TAddress, value = sp.TNat).layout(("from_ as from", ("to_ as to", "value"))),
self.data.tokenAddress,
"transfer"
).open_some()
sp.transfer(tokenTransferParam, sp.mutez(0), transferHandle)
# Reset state
self.data.state = IDLE
self.data.savedState_tokensToRedeem = sp.none
self.data.savedState_redeemer = sp.none
################################################################
# Governance
################################################################
# Update the governor address.
@sp.entry_point
def updateGovernorAddress(self, newGovernorAddress):
sp.set_type(newGovernorAddress, sp.TAddress)
sp.verify(sp.sender == self.data.governorAddress, "NOT_GOVERNOR")
self.data.governorAddress = newGovernorAddress
# Update the reward percent.
@sp.entry_point
def updateRewardPercent(self, newRewardPercent):
sp.set_type(newRewardPercent, sp.TNat)
sp.verify(sp.sender == self.data.governorAddress, "NOT_GOVERNOR")
sp.verify(sp.level >= self.data.rewardChangeAllowedLevel, "TOO_SOON")
self.data.rewardPercent = newRewardPercent
# Update the quipuswap pool address
@sp.entry_point
def updateQuipuswapAddress(self, newQuipuswapAddress):
sp.set_type(newQuipuswapAddress, sp.TAddress)
sp.verify(sp.sender == self.data.governorAddress, "NOT_GOVERNOR")
self.data.quipuswapAddress = newQuipuswapAddress
# Update the oven registry address
@sp.entry_point
def updateOvenRegistryAddress(self, newOvenRegistryAddress):
sp.set_type(newOvenRegistryAddress, sp.TAddress)
sp.verify(sp.sender == self.data.governorAddress, "NOT_GOVERNOR")
self.data.ovenRegistryAddress = newOvenRegistryAddress
# Update contract metadata
@sp.entry_point
def updateContractMetadata(self, params):
sp.set_type(params, sp.TPair(sp.TString, sp.TBytes))
sp.verify(sp.sender == self.data.governorAddress, "NOT_GOVERNOR")
key = sp.fst(params)
value = sp.snd(params)
self.data.metadata[key] = value
# Update token metadata
@sp.entry_point
def updateTokenMetadata(self, params):
sp.set_type(params, sp.TPair(sp.TNat, sp.TMap(sp.TString, sp.TBytes)))
sp.verify(sp.sender == self.data.governorAddress, "NOT_GOVERNOR")
self.data.token_metadata[0] = params
################################################################
################################################################
# TESTS
################################################################
################################################################
# Only run tests if this file is main.
if __name__ == "__main__":
Dummy = sp.import_script_from_url("file:./test-helpers/dummy.py")
FA12 = sp.import_script_from_url("file:./test-helpers/fa12.py")
FakeQuipuswap = sp.import_script_from_url("file:./test-helpers/fake-quipuswap-pool.py")
FakeOven = sp.import_script_from_url("file:./test-helpers/fake-oven.py")
FakeOvenRegistry = sp.import_script_from_url("file:./test-helpers/fake-oven-registry.py")
################################################################
# updateContractMetadata
################################################################
@sp.add_test(name="updateContractMetadata - succeeds when called by governor")
def test():
# GIVEN a Pool contract
scenario = sp.test_scenario()
pool = PoolContract(
governorAddress = Addresses.GOVERNOR_ADDRESS,
)
scenario += pool
# WHEN the updateContractMetadata is called with a new locator
locatorKey = ""
newLocator = sp.bytes('0x1234567890')
scenario += pool.updateContractMetadata((locatorKey, newLocator)).run(
sender = Addresses.GOVERNOR_ADDRESS,
)
# THEN the contract is updated.
scenario.verify(pool.data.metadata[locatorKey] == newLocator)
@sp.add_test(name="updateContractMetadata - fails when not called by governor")
def test():
# GIVEN a Pool contract
scenario = sp.test_scenario()
pool = PoolContract(
governorAddress = Addresses.GOVERNOR_ADDRESS,
)
scenario += pool
# WHEN the updateContractMetadata is called by someone who isn't the governor THEN the call fails
locatorKey = ""
newLocator = sp.bytes('0x1234567890')
scenario += pool.updateContractMetadata((locatorKey, newLocator)).run(
sender = Addresses.NULL_ADDRESS,
valid = False
)
################################################################
# updateTokenMetadata
################################################################
@sp.add_test(name="updateTokenMetadata - succeeds when called by governor")
def test():
# GIVEN a pool contract
scenario = sp.test_scenario()
pool = PoolContract(
governorAddress = Addresses.GOVERNOR_ADDRESS,
)
scenario += pool
# WHEN the updateTokenMetadata is called with a new data set.
newKey = "new"
newValue = sp.bytes('0x123456')
newMap = sp.map(
l = {
newKey: newValue
},
tkey = sp.TString,
tvalue = sp.TBytes
)
newData = (sp.nat(0), newMap)
scenario += pool.updateTokenMetadata(newData).run(
sender = Addresses.GOVERNOR_ADDRESS,
)
# THEN the contract is updated.
tokenMetadata = pool.data.token_metadata[0]
tokenId = sp.fst(tokenMetadata)
tokenMetadataMap = sp.snd(tokenMetadata)
scenario.verify(tokenId == sp.nat(0))
scenario.verify(tokenMetadataMap[newKey] == newValue)
@sp.add_test(name="updateTokenMetadata - fails when not called by governor")
def test():
# GIVEN a Pool contract
scenario = sp.test_scenario()
pool = PoolContract(
governorAddress = Addresses.GOVERNOR_ADDRESS,
)
scenario += pool
# WHEN the updateTokenMetadata is called by someone who isn't the governor THEN the call fails
newMap = sp.map(
l = {
"new": sp.bytes('0x123456')
},
tkey = sp.TString,
tvalue = sp.TBytes
)
newData = (sp.nat(0), newMap)
scenario += pool.updateTokenMetadata(newData).run(
sender = Addresses.NULL_ADDRESS,
valid = False
)
################################################################
# updateRewardPercent
################################################################
@sp.add_test(name="updateRewardPercent - fails if sender is not governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateRewardPercent is called by someone other than the governor
# THEN the call will fail
notGovernor = Addresses.NULL_ADDRESS
newRewardPercent = sp.nat(4)
scenario += pool.updateRewardPercent(newRewardPercent).run(
sender = notGovernor,
valid = False
)
@sp.add_test(name="updateRewardPercent - fails if before lock height")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract which is locked until a blacok
rewardChangeAllowedLevel = sp.nat(5)
pool = PoolContract(
rewardChangeAllowedLevel = rewardChangeAllowedLevel
)
scenario += pool
# WHEN updateRewardPercent is called before the level.
# THEN the call fails.
newRewardPercent = sp.nat(4)
scenario += pool.updateRewardPercent(newRewardPercent).run(
sender = Addresses.GOVERNOR_ADDRESS,
level = sp.as_nat(rewardChangeAllowedLevel - 1),
valid = False
)
@sp.add_test(name="updateRewardPercent - can update reward amount")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateRewardPercent is called
newRewardPercent = sp.nat(4)
scenario += pool.updateRewardPercent(newRewardPercent).run(
sender = Addresses.GOVERNOR_ADDRESS,
)
# THEN the reward amount is updated.
scenario.verify(pool.data.rewardPercent == newRewardPercent)
################################################################
# updateQuipuswapAddress
################################################################
@sp.add_test(name="updateQuipuswapAddress - fails if sender is not governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateQuipuswapAddress is called by someone other than the governor
# THEN the call will fail
notGovernor = Addresses.NULL_ADDRESS
scenario += pool.updateQuipuswapAddress(Addresses.ROTATED_ADDRESS).run(
sender = notGovernor,
valid = False
)
@sp.add_test(name="updateQuipuswapAddress - can rotate governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateQuipuswapAddress is called
scenario += pool.updateQuipuswapAddress(Addresses.ROTATED_ADDRESS).run(
sender = Addresses.GOVERNOR_ADDRESS,
)
# THEN the quipuswap address is rotated.
scenario.verify(pool.data.quipuswapAddress == Addresses.ROTATED_ADDRESS)
################################################################
# updateOvenRegistryAddress
################################################################
@sp.add_test(name="updateOvenRegistryAddress - fails if sender is not governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateOvenRegistryAddress is called by someone other than the governor
# THEN the call will fail
notGovernor = Addresses.NULL_ADDRESS
scenario += pool.updateOvenRegistryAddress(Addresses.ROTATED_ADDRESS).run(
sender = notGovernor,
valid = False
)
@sp.add_test(name="updateOvenRegistryAddress - can rotate governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateOvenRegistryAddress is called
scenario += pool.updateOvenRegistryAddress(Addresses.ROTATED_ADDRESS).run(
sender = Addresses.GOVERNOR_ADDRESS,
)
# THEN the oven registry address is rotated.
scenario.verify(pool.data.ovenRegistryAddress == Addresses.ROTATED_ADDRESS)
################################################################
# updateGovernorAddress
################################################################
@sp.add_test(name="updateGovernorAddress - fails if sender is not governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateGovernorAddress is called by someone other than the governor
# THEN the call will fail
notGovernor = Addresses.NULL_ADDRESS
scenario += pool.updateGovernorAddress(Addresses.ROTATED_ADDRESS).run(
sender = notGovernor,
valid = False
)
@sp.add_test(name="updateGovernorAddress - can rotate governor")
def test():
scenario = sp.test_scenario()
# GIVEN a pool contract
pool = PoolContract()
scenario += pool
# WHEN updateGovernorAddress is called
scenario += pool.updateGovernorAddress(Addresses.ROTATED_ADDRESS).run(
sender = Addresses.GOVERNOR_ADDRESS,
)
# THEN the governor is rotated.
scenario.verify(pool.data.governorAddress == Addresses.ROTATED_ADDRESS)
################################################################
# liquidate
################################################################
@sp.add_test(name="liquidate - fails if given address is not oven")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a fake oven registry which will identify all addresses as not ovens.
ovenRegistry = FakeOvenRegistry.FakeOvenRegistry(
isOvenValue = False
)
scenario += ovenRegistry
# AND a pool contract
pool = PoolContract(
ovenRegistryAddress = ovenRegistry.address,
tokenAddress = token.address,
)
scenario += pool
# AND the pool has a bunch of tokens
scenario += token.mint(
sp.record(
address = pool.address,
value = sp.nat(10000000000)
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# AND a fake oven.
oven = FakeOven.FakeOven()
scenario += oven
# WHEN liquidate is called
# THEN the call will fail
scenario += pool.liquidate(oven.address).run(
valid = False
)
@sp.add_test(name="liquidate - liqudates oven")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a fake oven registry
ovenRegistry = FakeOvenRegistry.FakeOvenRegistry(
isOvenValue = True
)
scenario += ovenRegistry
# AND a pool contract
pool = PoolContract(
ovenRegistryAddress = ovenRegistry.address,
tokenAddress = token.address,
)
scenario += pool
# AND the pool has a bunch of tokens
scenario += token.mint(
sp.record(
address = pool.address,
value = sp.nat(10000000000)
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# AND a fake oven.
oven = FakeOven.FakeOven()
scenario += oven
# WHEN Alice liquidates an oven through the pool
scenario += pool.liquidate(oven.address).run(
sender = Addresses.ALICE_ADDRESS
)
# THEN the oven is liquidated
scenario.verify(oven.data.isLiquidated == True)
################################################################
# default
################################################################
@sp.add_test(name="default - can swap tokens")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a fake quipuswap contract
quipuswapPool = FakeQuipuswap.FakePool(
tokenAddress = token.address
)
scenario += quipuswapPool
# AND a dummy contract.
dummy = Dummy.DummyContract()
scenario += dummy
# AND a pool contract
pool = PoolContract(
quipuswapAddress = quipuswapPool.address,
tokenAddress = token.address,
)
scenario += pool
# AND the quipuswap pool has a bunch of tokens
scenario += token.mint(
sp.record(
address = quipuswapPool.address,
value = sp.nat(10000000000)
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# WHEN the pool receives some XTZ
amountMutez = sp.mutez(240000)
scenario += pool.default(sp.unit).run(
amount = amountMutez,
sender = dummy.address,
)
# THEN the initiator received 1% of the payout.
scenario.verify(dummy.balance == sp.mutez(2400))
# AND the amount is transferred to the quipuswap pool.
scenario.verify(quipuswapPool.balance == sp.mutez(240000 - 2400))
# AND the pool contract received a number of kUSD back.
scenario.verify(token.data.balances[pool.address].balance == sp.as_nat((240000 - 2400)))
# AND the pool has no remaining XTZ.
scenario.verify(pool.balance == sp.mutez(0))
################################################################
# deposit
################################################################
@sp.add_test(name="deposit - fails in bad state")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a pool contract in the WAITING_DEPOSIT state
pool = PoolContract(
tokenAddress = token.address,
state = WAITING_DEPOSIT
)
scenario += pool
# AND Alice has tokens
aliceTokens = sp.nat(10)
scenario += token.mint(
sp.record(
address = Addresses.ALICE_ADDRESS,
value = aliceTokens
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# AND Alice has given the pool an allowance
scenario += token.approve(
sp.record(
spender = pool.address,
value = aliceTokens
)
).run(
sender = Addresses.ALICE_ADDRESS
)
# WHEN Alice deposits tokens in the contract.
# THEN the call fails
scenario += pool.deposit(
aliceTokens
).run(
sender = Addresses.ALICE_ADDRESS,
valid = False
)
@sp.add_test(name="deposit - resets state")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a pool contract
pool = PoolContract(
tokenAddress = token.address
)
scenario += pool
# AND Alice has tokens
aliceTokens = sp.nat(10)
scenario += token.mint(
sp.record(
address = Addresses.ALICE_ADDRESS,
value = aliceTokens
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# AND Alice has given the pool an allowance
scenario += token.approve(
sp.record(
spender = pool.address,
value = aliceTokens
)
).run(
sender = Addresses.ALICE_ADDRESS
)
# WHEN Alice deposits tokens in the contract.
scenario += pool.deposit(
aliceTokens
).run(
sender = Addresses.ALICE_ADDRESS
)
# THEN the state is reset to idle.
scenario.verify(pool.data.state == IDLE)
scenario.verify(pool.data.savedState_tokensToDeposit.is_some() == False)
scenario.verify(pool.data.savedState_depositor.is_some() == False)
@sp.add_test(name="deposit - can deposit from one account")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a pool contract
pool = PoolContract(
tokenAddress = token.address
)
scenario += pool
# AND Alice has tokens
aliceTokens = sp.nat(10)
scenario += token.mint(
sp.record(
address = Addresses.ALICE_ADDRESS,
value = aliceTokens
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# AND Alice has given the pool an allowance
scenario += token.approve(
sp.record(
spender = pool.address,
value = aliceTokens
)
).run(
sender = Addresses.ALICE_ADDRESS
)
# WHEN Alice deposits tokens in the contract.
scenario += pool.deposit(
aliceTokens
).run(
sender = Addresses.ALICE_ADDRESS
)
# THEN Alice trades her tokens for LP tokens
scenario.verify(token.data.balances[Addresses.ALICE_ADDRESS].balance == sp.nat(0))
scenario.verify(pool.data.balances[Addresses.ALICE_ADDRESS].balance == aliceTokens * PRECISION)
# AND the total supply of tokens is as expected
scenario.verify(pool.data.totalSupply == aliceTokens * PRECISION)
# AND the pool has possession of the correct number of tokens.
scenario.verify(token.data.balances[pool.address].balance == aliceTokens)
@sp.add_test(name="deposit - can deposit from two accounts")
def test():
scenario = sp.test_scenario()
# GIVEN a token contract
token = FA12.FA12(
admin = Addresses.ADMIN_ADDRESS
)
scenario += token
# AND a pool contract
pool = PoolContract(
tokenAddress = token.address
)
scenario += pool
# AND Alice has tokens
aliceTokens = sp.nat(10)
scenario += token.mint(
sp.record(
address = Addresses.ALICE_ADDRESS,
value = aliceTokens
)
).run(
sender = Addresses.ADMIN_ADDRESS
)
# AND Bob has twice as many tokens
bobTokens = sp.nat(40)
scenario += token.mint(
sp.record(
address = Addresses.BOB_ADDRESS,
value = bobTokens