anyone has an example on how to perform gas estimation for a function call in hardhat tests? i can't get good documentation on this, all i can find is ethers methods but this isn't what i want to use since hardhat makes you use their own version of ethers

You have to write unit test for your functions, also have to activate reportGas configurations in your hardhat config file

var methodSignature = web3.eth.abi.encodeFunctionSignature(func);
var encodedParameter = web3.eth.abi.encodeParameter("string", "ABCDEFGH");

var data = methodSignature //method signature
+ encodedParameter.substring(2); //hex of input string without '0x' prefix

let gas = await provider.estimateGas({
from: owner.address,
to: addr2.address,
data: data,
value: 1000000000000000,
function(estimatedGas, err) {
console.log("estimatedGas: " + estimatedGas);
console.log("Err:" + err);
}
});
console.log("Gas: " + gas);

i ended up using this with with web3 on hardhat provider object

:o

you want to get a specific tx's gas or in general?

for general
https://github.com/cgewecke/hardhat-gas-reporter

for specific

const myGas = await yourContract.estimateGas.yourFunction(parameters)

not sure this is up to date with the new ethers versions

this will generate an exception if the transaction will revert.
That's also used to extract data from payable functions without paying gas

i needed to estimate the gas for some weird contract i'm working on that can go above block limit

why would you ever do that?

on most EVM chains there's a block limit and you cannot go over it

same goes for the max contract size

not my contract

i'll try to fix this too

yup, gas is bad
make the logic more simpler and do less read/write