Is there any alternative way to test contracts that requires mainnet without having to pay insane gas like this?

lol why are you using mainnet

and that too ethereum mainnet, of course it's going to be expensive

Use rinkeby testnet if you can, but if you HAVE TO use a mainnet, then use polygon mainnet, that would be the cheapest

use tenderly and learn how to use hardhat or ganache to fork mainnet

tenderly is a dev tool suite, very OP and forking mainnet is done from the ganache-cli or a hardhat script depending on your hardhat setup

forking mainnet allows you access to any account on that blockchain, unlimited funds and unlimited capacity to test. rather than being restricted to only being able to test based on faucet emissions or charity testETH from other devs

PitterPatter hey

So if do a bytes32 => bool mapping, the default value of the boolean will be false?

yeah to my knowledge, as its a mapping it will be nulll until added to at which point you'd set the result of the bool, so technically yeah a standalone boolean is defaulted to false yeah

thanks

Is it open sourced?

oh alright