def run(logger):
module = Contract('ModelDataSource')
setter = module.setter()
getter = module.getter()
tester = module.tester()
mLen = len(str(len(intervalLists)))
nLen = max([len(str(len(intervalList))) for intervalList in intervalLists])
totalGas = 0
logger.info('Setting intervals...')
for m in range(len(intervalLists)):
for n in range(len(intervalLists[m])):
gas = tester.setInterval(m, n, *intervalLists[m][n])
setter.setInterval(m, n, *intervalLists[m][n])
assert getter.getInterval(m, n) == intervalLists[m][n]
logger.debug('Set interval {0:{1}} {2:{3}}: gas = {4}'.format(
m, mLen, n, nLen, gas))
totalGas += gas
logger.info('Total gas = {}'.format(totalGas))
setter.lock()
try:
setter.setInterval(0, 0, *intervalLists[0][0])
logger.error('Lock failure')
except ValueError:
logger.info('Lock success')
def run(numOfTestsPerInterval,logger,conversionHandler,distributionFunc):
intervals = [[minN,maxN,minR,maxR,alpha,beta] for minN,maxN,minR,maxR,alpha,beta in sum(intervalLists,[])]
numOfTests = numOfTestsPerInterval*len(intervals)
testCount = 0
module1 = conversionHandler(FixedPoint)
module2 = conversionHandler(Contract('ModelCalculator').getter())
logger.info('Starting {} tests...'.format(numOfTests))
for minN,maxN,minR,maxR,alpha,beta in intervals:
module1.SetIntervalTypeInternally(alpha,beta)
module2.SetIntervalTypeInternally(alpha,beta)
minV,maxV = conversionHandler.inputRange(minN,maxN,minR,maxR)
for newV in distributionFunc(minV,maxV,numOfTestsPerInterval):
testCount += 1
output1 = module1.outputFunc(newV,minN,maxN,minR,maxR,alpha,beta)
output2 = module2.outputFunc(newV,minN,maxN,minR,maxR,alpha,beta)
logger.periodic(testCount,numOfTests,'python = {}, solidity = {}'.format(output1,output2))
if output1 != output2:
logger.error('Emulation error:')
logger.error('minN = {}'.format(minN ))
logger.error('maxN = {}'.format(maxN ))
logger.error('minR = {}'.format(minR ))
logger.error('maxR = {}'.format(maxR ))
logger.error('alpha = {}'.format(alpha))
logger.error('beta = {}'.format(beta ))
logger.error('newV = {}'.format(newV ))
return
logger.info('Done')
def init(logger, timeout):
contractAddressLocatorProxy = Contract('ContractAddressLocatorProxy', [])
modelCalculator = Contract('ModelCalculator', [])
priceBandCalculator = Contract('PriceBandCalculator', [])
modelDataSource = Contract('ModelDataSource', [])
mintingPointTimersManager = Contract(
'MintingPointTimersManager',
[contractAddressLocatorProxy.address, timeout])
mintManager = Contract('MintManager',
[contractAddressLocatorProxy.address])
intervalIterator = Contract('IntervalIterator',
[contractAddressLocatorProxy.address])
monetaryModelState = Contract('MonetaryModelState',
[contractAddressLocatorProxy.address])
monetaryModel = Contract('MonetaryModel',
[contractAddressLocatorProxy.address])
contractAddressLocator = Contract(
'ContractAddressLocator',
unzip([
['IModelCalculator', modelCalculator.address],
['IPriceBandCalculator', priceBandCalculator.address],
['IModelDataSource', modelDataSource.address],
['IMintingPointTimersManager', mintingPointTimersManager.address],
['IMintManager', mintManager.address],
['IIntervalIterator', intervalIterator.address],
['IMonetaryModelState', monetaryModelState.address],
['IMonetaryModel', monetaryModel.address],
['ITransactionManager', Contract.owner],
]))
contractAddressLocatorProxy.setter().upgrade(
contractAddressLocator.address)
initialize(modelDataSource.setter(), logger)
return monetaryModelState, monetaryModel
def run(numOfTestsPerInterval,logger,conversionHandler,distributionFunc):
intervals = [[minN,maxN,minR,maxR,alpha,beta] for minN,maxN,minR,maxR,alpha,beta in sum(intervalLists,[])]
numOfTests = numOfTestsPerInterval*len(intervals)
testCount = 0
maxGas = 0
module = conversionHandler(Contract('ModelCalculator').tester())
logger.info('Starting {} tests...'.format(numOfTests))
for minN,maxN,minR,maxR,alpha,beta in intervals:
module.SetIntervalTypeExternally(FixedPoint,alpha,beta)
minV,maxV = conversionHandler.inputRange(minN,maxN,minR,maxR)
for newV in distributionFunc(minV,maxV,numOfTestsPerInterval):
testCount += 1
curGas = module.outputFunc(newV,minN,maxN,minR,maxR,alpha,beta)
maxGas = max(maxGas,curGas)
logger.periodic(testCount,numOfTests,'curGas = {}, maxGas = {}'.format(curGas,maxGas))
logger.info('Done: maxGas = {}'.format(maxGas))
def run(logger):
contractAddressLocatorProxy = Contract('ContractAddressLocatorProxy',[ ])
modelCalculator = Contract('ModelCalculator' ,[ ])
priceBandCalculator = Contract('PriceBandCalculator' ,[ ])
reconciliationAdjuster = Contract('ReconciliationAdjuster' ,[ ])
ethConverter = Contract('ETHConverter' ,[contractAddressLocatorProxy.address])
rateApprover = Contract('RateApprover' ,[contractAddressLocatorProxy.address])
modelDataSource = Contract('ModelDataSource' ,[ ])
monetaryModel = Contract('MonetaryModel' ,[contractAddressLocatorProxy.address])
transactionLimiter = Contract('TransactionLimiter' ,[contractAddressLocatorProxy.address])
transactionManager = Contract('TransactionManager' ,[contractAddressLocatorProxy.address])
authorizationDataSource = Contract('AuthorizationDataSource' ,[ ])
sgaAuthorizationManager = Contract('SGAAuthorizationManager' ,[contractAddressLocatorProxy.address])
walletsTradingDataSource = Contract('WalletsTradingDataSource' ,[contractAddressLocatorProxy.address])
walletsTradingLimiterValueConverter = Contract('WalletsTradingLimiterValueConverter' ,[ ])
tradingClasses = Contract('TradingClasses' ,[ ])
sgaWalletsTradingLimiter = Contract('SGAWalletsTradingLimiter' ,[contractAddressLocatorProxy.address ])
reserveManager = Contract('ReserveManager' ,[contractAddressLocatorProxy.address])
paymentManager = Contract('PaymentManager' ,[contractAddressLocatorProxy.address])
paymentQueue = Contract('PaymentQueue' ,[contractAddressLocatorProxy.address])
redButton = Contract('RedButton' ,[ ])
sgaTokenManager = Contract('SGATokenManager' ,[contractAddressLocatorProxy.address])
initialize(modelDataSource.setter(),logger)
walletsTradingLimiterValueConverter.setter().accept(Contract.owner)
ethConverter.setter().accept(Contract.owner)
authorizationDataSource.setter().accept(Contract.owner)
authorizationDataSource.setter().upsertOne(Contract.owner,1,True,2**256-1,2**256-1,0)
testCount = 0
numOfTests = len(CONSTANTS)**4
logger.info('Starting {} tests...'.format(numOfTests))
for factorN in CONSTANTS:
for factorD in CONSTANTS:
for priceN in CONSTANTS:
for priceD in CONSTANTS:
testCount += 1
mintingPointTimersManager = Contract('MintingPointTimersManager' ,[contractAddressLocatorProxy.address,2**255])
mintManager = Contract('MintManager' ,[contractAddressLocatorProxy.address ])
intervalIterator = Contract('IntervalIterator' ,[contractAddressLocatorProxy.address ])
monetaryModelState = Contract('MonetaryModelState' ,[contractAddressLocatorProxy.address ])
sgaToken = Contract('SGAToken' ,[contractAddressLocatorProxy.address ])
contractAddressLocator = Contract('ContractAddressLocator',unzip([
['IModelCalculator' ,modelCalculator .address],
['IPriceBandCalculator' ,priceBandCalculator .address],
['IReconciliationAdjuster' ,reconciliationAdjuster .address],
['IETHConverter' ,ethConverter .address],
['IModelDataSource' ,modelDataSource .address],
['IMintingPointTimersManager' ,mintingPointTimersManager .address],
['IMintManager' ,mintManager .address],
['IIntervalIterator' ,intervalIterator .address],
['IMonetaryModelState' ,monetaryModelState .address],
['IMonetaryModel' ,monetaryModel .address],
['ITransactionLimiter' ,transactionLimiter .address],
['ITransactionManager' ,transactionManager .address],
['ISGAToken' ,sgaToken .address],
['IAuthorizationDataSource',authorizationDataSource.address],
['ISGAAuthorizationManager',sgaAuthorizationManager.address],
['IWalletsTradingDataSource' ,walletsTradingDataSource .address],
['IWalletsTLValueConverter' ,walletsTradingLimiterValueConverter .address],
['ITradingClasses' ,tradingClasses .address],
['WalletsTLSGATokenManager' ,sgaWalletsTradingLimiter .address],
['IReserveManager' ,reserveManager .address],
['IPaymentManager' ,paymentManager .address],
['IPaymentQueue' ,paymentQueue .address],
['IRedButton' ,redButton .address],
['ISGATokenManager' ,sgaTokenManager .address],
["IRateApprover" , rateApprover .address],
]))
contractAddressLocatorProxy.setter().upgrade(contractAddressLocator.address)
rateApprover.setter().setRateBounds(1, 0x10000000000000000,1,1,0x10000000000000000)
walletsTradingLimiterValueConverter.setter().setPrice(testCount,1,1)
reconciliationAdjuster.setter().setFactor(testCount,factorN,factorD)
ethConverter.setter().setPrice(testCount,priceN,priceD,priceN,priceD)
sdrInput = reconciliationAdjuster.getter().adjustSell(MAX_SDR_AMOUNT)
ethInput = ethConverter.getter().toEthAmount(sdrInput)
b_sgaOutput = Contract.decode(sgaToken.setter({'value':ethInput}).exchange(),2,eventParams)['output']
b_sdrInModel = monetaryModelState.getter().getSdrTotal()
b_sgaInModel = monetaryModelState.getter().getSgaTotal()
b_sgaInToken = sgaToken.getter().totalSupply()
b_ethInToken = sgaToken.balance()
s_ethOutput = Contract.decode(sgaToken.setter().transfer(sgaToken.address,b_sgaOutput),2,eventParams)['output']
s_sdrInModel = monetaryModelState.getter().getSdrTotal()
s_sgaInModel = monetaryModelState.getter().getSgaTotal()
s_sgaInToken = sgaToken.getter().totalSupply()
s_ethInToken = sgaToken.balance()
logger.periodic(testCount,numOfTests,'factorN = {}'.format(int(factorN )))
logger.periodic(testCount,numOfTests,'factorD = {}'.format(int(factorD )))
logger.periodic(testCount,numOfTests,'priceN = {}'.format(int(priceN )))
logger.periodic(testCount,numOfTests,'priceD = {}'.format(int(priceD )))
logger.periodic(testCount,numOfTests,'sdrInput = {}'.format(int(sdrInput )))
logger.periodic(testCount,numOfTests,'ethInput = {}'.format(int(ethInput )))
logger.periodic(testCount,numOfTests,'b_sgaOutput = {}'.format(int(b_sgaOutput )))
logger.periodic(testCount,numOfTests,'b_sdrInModel = {}'.format(int(b_sdrInModel)))
logger.periodic(testCount,numOfTests,'b_sgaInModel = {}'.format(int(b_sgaInModel)))
logger.periodic(testCount,numOfTests,'b_sgaInToken = {}'.format(int(b_sgaInToken)))
logger.periodic(testCount,numOfTests,'b_ethInToken = {}'.format(int(b_ethInToken)))
logger.periodic(testCount,numOfTests,'s_ethOutput = {}'.format(int(s_ethOutput )))
logger.periodic(testCount,numOfTests,'s_sdrInModel = {}'.format(int(s_sdrInModel)))
logger.periodic(testCount,numOfTests,'s_sgaInModel = {}'.format(int(s_sgaInModel)))
logger.periodic(testCount,numOfTests,'s_sgaInToken = {}'.format(int(s_sgaInToken)))
logger.periodic(testCount,numOfTests,'s_ethInToken = {}'.format(int(s_ethInToken)))
def init(logger, timeout):
contractAddressLocatorProxy = Contract('ContractAddressLocatorProxy', [])
modelCalculator = Contract('ModelCalculator', [])
priceBandCalculator = Contract('PriceBandCalculator', [])
reconciliationAdjuster = Contract('ReconciliationAdjuster', [])
ethConverter = Contract('ETHConverter',
[contractAddressLocatorProxy.address])
modelDataSource = Contract('ModelDataSource', [])
mintingPointTimersManager = Contract(
'MintingPointTimersManager',
[contractAddressLocatorProxy.address, timeout])
mintManager = Contract('MintManager',
[contractAddressLocatorProxy.address])
intervalIterator = Contract('IntervalIterator',
[contractAddressLocatorProxy.address])
monetaryModelState = Contract('MonetaryModelState',
[contractAddressLocatorProxy.address])
monetaryModel = Contract('MonetaryModel',
[contractAddressLocatorProxy.address])
transactionLimiter = Contract('TransactionLimiter',
[contractAddressLocatorProxy.address])
transactionManager = Contract('TransactionManager',
[contractAddressLocatorProxy.address])
sgaToken = Contract('SGAToken', [contractAddressLocatorProxy.address])
authorizationDataSource = Contract('AuthorizationDataSource', [])
sgaAuthorizationManager = Contract('SGAAuthorizationManager',
[contractAddressLocatorProxy.address])
walletsTradingDataSource = Contract('WalletsTradingDataSource',
[contractAddressLocatorProxy.address])
walletsTradingLimiterValueConverter = Contract(
'WalletsTradingLimiterValueConverter', [])
tradingClasses = Contract('TradingClasses', [])
sgaWalletsTradingLimiter = Contract('SGAWalletsTradingLimiter',
[contractAddressLocatorProxy.address])
reserveManager = Contract('ReserveManager',
[contractAddressLocatorProxy.address])
paymentManager = Contract('PaymentManager',
[contractAddressLocatorProxy.address])
paymentQueue = Contract('PaymentQueue',
[contractAddressLocatorProxy.address])
redButton = Contract('RedButton', [])
sgaTokenManager = Contract('SGATokenManager',
[contractAddressLocatorProxy.address])
contractAddressLocator = Contract(
'ContractAddressLocator',
unzip([
['IModelCalculator', modelCalculator.address],
['IPriceBandCalculator', priceBandCalculator.address],
['IReconciliationAdjuster', reconciliationAdjuster.address],
['IETHConverter', ethConverter.address],
['IModelDataSource', modelDataSource.address],
['IMintingPointTimersManager', mintingPointTimersManager.address],
['IMintManager', mintManager.address],
['IIntervalIterator', intervalIterator.address],
['IMonetaryModelState', monetaryModelState.address],
['IMonetaryModel', monetaryModel.address],
['ITransactionLimiter', transactionLimiter.address],
['ITransactionManager', transactionManager.address],
['ISGAToken', sgaToken.address],
['IAuthorizationDataSource', authorizationDataSource.address],
['ISGAAuthorizationManager', sgaAuthorizationManager.address],
['IWalletsTradingDataSource', walletsTradingDataSource.address],
[
'IWalletsTradingLimiterValueConverter',
walletsTradingLimiterValueConverter.address
],
['ITradingClasses', tradingClasses.address],
['IWalletsTradingLimiter', sgaWalletsTradingLimiter.address],
['IReserveManager', reserveManager.address],
['IPaymentManager', paymentManager.address],
['IPaymentQueue', paymentQueue.address],
['IRedButton', redButton.address],
['ISGATokenManager', sgaTokenManager.address],
]))
contractAddressLocatorProxy.setter().upgrade(
contractAddressLocator.address)
initialize(modelDataSource.setter(), logger)
authorizationDataSource.setter().accept(Contract.owner)
authorizationDataSource.setter().upsertOne(Contract.owner, 1, True,
2**256 - 1, 2**256 - 1, 0)
return sgaToken
def run(logger):
contractAddressLocatorProxy = Contract('ContractAddressLocatorProxy', [])
aggregatorInterfaceMockup = Contract('AggregatorInterfaceMockup', [])
modelCalculator = Contract('ModelCalculator', [])
priceBandCalculator = Contract('PriceBandCalculator', [])
reconciliationAdjuster = Contract('ReconciliationAdjuster', [])
ethConverter = Contract('ETHConverter',
[contractAddressLocatorProxy.address])
rateApprover = Contract('OracleRateApprover', [
contractAddressLocatorProxy.address, aggregatorInterfaceMockup.address,
10000
])
modelDataSource = Contract('ModelDataSource', [])
monetaryModel = Contract('MonetaryModel',
[contractAddressLocatorProxy.address])
transactionLimiter = Contract('TransactionLimiter',
[contractAddressLocatorProxy.address])
transactionManager = Contract('TransactionManager',
[contractAddressLocatorProxy.address])
authorizationDataSource = Contract('AuthorizationDataSource', [])
sgrAuthorizationManager = Contract('SGRAuthorizationManager',
[contractAddressLocatorProxy.address])
buyWalletsTradingDataSource = Contract(
'WalletsTradingDataSource', [contractAddressLocatorProxy.address])
sellWalletsTradingDataSource = Contract(
'WalletsTradingDataSource', [contractAddressLocatorProxy.address])
sgrBuyWalletsTradingLimiter = Contract(
'SGRBuyWalletsTradingLimiter', [contractAddressLocatorProxy.address])
sgrSellWalletsTradingLimiter = Contract(
'SGRSellWalletsTradingLimiter', [contractAddressLocatorProxy.address])
walletsTradingLimiterValueConverter = Contract(
'WalletsTradingLimiterValueConverter', [])
tradingClasses = Contract('TradingClasses', [])
reserveManager = Contract('ReserveManager',
[contractAddressLocatorProxy.address])
paymentManager = Contract('PaymentManager',
[contractAddressLocatorProxy.address])
paymentQueue = Contract('PaymentQueue',
[contractAddressLocatorProxy.address])
redButton = Contract('RedButton', [])
sgrTokenManager = Contract('SGRTokenManager',
[contractAddressLocatorProxy.address])
initialize(modelDataSource.setter(), logger)
walletsTradingLimiterValueConverter.setter().accept(Contract.owner)
ethConverter.setter().accept(Contract.owner)
authorizationDataSource.setter().accept(Contract.owner)
buyWalletsTradingDataSource.setter().setAuthorizedExecutorsIdentifier([
Web3.toHex(text='BuyWalletsTLSGRTokenManager'),
Web3.toHex(text='WalletsTLSGNTokenManager')
])
sellWalletsTradingDataSource.setter().setAuthorizedExecutorsIdentifier(
[Web3.toHex(text='SellWalletsTLSGRTokenManager')])
authorizationDataSource.setter().upsertOne(Contract.owner, 1, True,
2**256 - 1, 2**256 - 1,
2**256 - 1, 0)
testCount = 0
numOfTests = len(CONSTANTS)**4
logger.info('Starting {} tests...'.format(numOfTests))
for factorN in CONSTANTS:
for factorD in CONSTANTS:
for priceN in CONSTANTS:
for priceD in CONSTANTS:
testCount += 1
mintingPointTimersManager = Contract(
'MintingPointTimersManager',
[contractAddressLocatorProxy.address, 2**255])
mintManager = Contract(
'MintManager', [contractAddressLocatorProxy.address])
intervalIterator = Contract(
'IntervalIterator',
[contractAddressLocatorProxy.address])
monetaryModelState = Contract(
'MonetaryModelState',
[contractAddressLocatorProxy.address])
sgrToken = Contract('SGRToken',
[contractAddressLocatorProxy.address])
contractAddressLocator = Contract(
'ContractAddressLocator',
unzip([
['IModelCalculator', modelCalculator.address],
[
'IPriceBandCalculator',
priceBandCalculator.address
],
[
'IReconciliationAdjuster',
reconciliationAdjuster.address
],
['IETHConverter', ethConverter.address],
['IModelDataSource', modelDataSource.address],
[
'IMintingPointTimersManager',
mintingPointTimersManager.address
],
['IMintManager', mintManager.address],
['IIntervalIterator', intervalIterator.address],
[
'IMonetaryModelState',
monetaryModelState.address
],
['IMonetaryModel', monetaryModel.address],
[
'ITransactionLimiter',
transactionLimiter.address
],
[
'ITransactionManager',
transactionManager.address
],
['ISGRToken', sgrToken.address],
[
'IAuthorizationDataSource',
authorizationDataSource.address
],
[
'ISGRAuthorizationManager',
sgrAuthorizationManager.address
],
[
'IWalletsTLValueConverter',
walletsTradingLimiterValueConverter.address
],
['ITradingClasses', tradingClasses.address],
[
"BuyWalletsTLSGRTokenManager",
sgrBuyWalletsTradingLimiter.address
],
[
"SellWalletsTLSGRTokenManager",
sgrSellWalletsTradingLimiter.address
],
[
'BuyWalletsTradingDataSource',
buyWalletsTradingDataSource.address
],
[
'SellWalletsTradingDataSource',
sellWalletsTradingDataSource.address
],
['IReserveManager', reserveManager.address],
['IPaymentManager', paymentManager.address],
['IPaymentQueue', paymentQueue.address],
['IRedButton', redButton.address],
['ISGRTokenManager', sgrTokenManager.address],
["IRateApprover", rateApprover.address],
]))
price = int((priceN / priceD) * 100000000)
tooLowPrice = price == 0
try:
contractAddressLocatorProxy.setter().upgrade(
contractAddressLocator.address)
aggregatorInterfaceMockup.setter().setLatestAnswer(
price)
walletsTradingLimiterValueConverter.setter().setPrice(
testCount, 1, 1)
reconciliationAdjuster.setter().setFactor(
testCount, factorN, factorD)
ethConverter.setter().setPrice(testCount, priceN,
priceD, priceN, priceD)
sdrInput = reconciliationAdjuster.getter().adjustSell(
MAX_SDR_AMOUNT)
ethInput = ethConverter.getter().toEthAmount(sdrInput)
b_sgrOutput = Contract.decode(
sgrToken.setter({
'value': ethInput
}).exchange(), 2, eventParams)['output']
b_sdrInModel = monetaryModelState.getter().getSdrTotal(
)
b_sgrInModel = monetaryModelState.getter().getSgrTotal(
)
b_sgrInToken = sgrToken.getter().totalSupply()
b_ethInToken = sgrToken.balance()
s_ethOutput = Contract.decode(
sgrToken.setter().transfer(sgrToken.address,
b_sgrOutput), 2,
eventParams)['output']
s_sdrInModel = monetaryModelState.getter().getSdrTotal(
)
s_sgrInModel = monetaryModelState.getter().getSgrTotal(
)
s_sgrInToken = sgrToken.getter().totalSupply()
s_ethInToken = sgrToken.balance()
logger.periodic(
testCount, numOfTests,
'factorN = {}'.format(int(factorN)))
logger.periodic(
testCount, numOfTests,
'factorD = {}'.format(int(factorD)))
logger.periodic(
testCount, numOfTests,
'priceN = {}'.format(int(priceN)))
logger.periodic(
testCount, numOfTests,
'priceD = {}'.format(int(priceD)))
logger.periodic(
testCount, numOfTests,
'sdrInput = {}'.format(int(sdrInput)))
logger.periodic(
testCount, numOfTests,
'ethInput = {}'.format(int(ethInput)))
logger.periodic(
testCount, numOfTests,
'b_sgrOutput = {}'.format(int(b_sgrOutput)))
logger.periodic(
testCount, numOfTests,
'b_sdrInModel = {}'.format(int(b_sdrInModel)))
logger.periodic(
testCount, numOfTests,
'b_sgrInModel = {}'.format(int(b_sgrInModel)))
logger.periodic(
testCount, numOfTests,
'b_sgrInToken = {}'.format(int(b_sgrInToken)))
logger.periodic(
testCount, numOfTests,
'b_ethInToken = {}'.format(int(b_ethInToken)))
logger.periodic(
testCount, numOfTests,
's_ethOutput = {}'.format(int(s_ethOutput)))
logger.periodic(
testCount, numOfTests,
's_sdrInModel = {}'.format(int(s_sdrInModel)))
logger.periodic(
testCount, numOfTests,
's_sgrInModel = {}'.format(int(s_sgrInModel)))
logger.periodic(
testCount, numOfTests,
's_sgrInToken = {}'.format(int(s_sgrInToken)))
logger.periodic(
testCount, numOfTests,
's_ethInToken = {}'.format(int(s_ethInToken)))
except Exception as e:
if (tooLowPrice):
logger.periodic(
testCount, numOfTests,
'tooLowPrice priceN {} priceD {} price {}'.
format(priceN, priceD, price))
else:
raise e