julienmartinlevrai / spells-mainnet

hevm tests for dss

spells-mainnet

Staging repo for MakerDAO weekly executive spells.

Getting Started

$ git clone [e-mail]:makerdao/spells-mainnet.git
$ dapp update

Build

$ make

Test

Set ETH_RPC_URL to a Mainnet node.

$ export ETH_RPC_URL=<Mainnet URL>
$ make test

Deploy

Set ETH_RPC_URL to a Mainnet node and ensure ETH_GAS is set to a high enough number to deploy the contract.

$ export ETH_RPC_URL=<Mainnet URL>
$ export ETH_GAS=5000000
$ export ETH_GAS_PRICE=$(seth --to-wei 100 "gwei")
$ make deploy

A few helpful tips to estimate gas. You can use the following to get a gas estimate for the deploy. Once you have that, add another million gas as a buffer against out-of-gas errors. Feed this value back into ETH_GAS.

SOLC_FLAGS="--optimize --optimize-runs=1" dapp --use solc:0.5.12 build --extract
seth estimate --create $(cat ./out/DssSpell.bin) 'DssSpell()'
export ETH_GAS="$(($ETH_GAS + 0))"
export ETH_GAS=$(bc <<< "$ETH_GAS + 1000000")

You should also check current gas prices on your favorite site (e.g. https://ethgasstation.info/) and put that gwei value in the ETH_GAS_PRICE line.

export ETH_GAS_PRICE=$(seth --to-wei 420 "gwei")