How to Write Basic Tests | Testing with Foundry

[@smartcontractprogrammer]

0:00 - Intro 1:00 - Test setup 1:52 - Passing test 3:52 - Test for error 5:37 - Expect revert 6:36 - Test dec 7:17 - Test verbosity 8:31 - Gas report Code github.com/t4sk/hello-foundry Book book.getfoundry.sh/ Solidity by Example solidity-by-example.org/ Take a course www.smartcontract.engineer/

[@redbeet4772]

There is an error "undeclare identifier" when writing "vm.expectRevert(stdError.arithmeticError)". It seems like the foundry doesn't recognize this, do you know why?

[@MatoPrimaB]

Awesome work, really looking forward to this foundry content

[@formularyzer]

I watched your video again. I got it now, thanks for showing me integer flow!

[@IssaNana-k4d]

Thank you so much for this series

Great content! I really appreciate! Thank you!

[@meka4996]

Very good! Thank you

[@jstechlead]

Great video! Quick question - can you please provide list of all vscode extensions, which you're using in VScode?

[@smartcontractprogrammer]

Prettier Solidity (Nomic Foundation)

[@kiMANIM.1111]

@@smartcontractprogrammer is their something special about solidity by nomic foundation that is not in solidity by juan blanco

[@JustinBishop]

Where can i find the built in functions that foundry has? im writing a test for a tutorial hack contract that will interact with the target contract.

[@smartcontractprogrammer]

book.getfoundry.sh/

[@kevinnzeng7081]

Terrific 💯 Thanks so much 🎉

[@ramamuge3380]

I'm also getting the same error of Undeclared Identifier when using the vm.expectRevert(stdError.arithmeticError)...can someone advice on the solution?

[@smartcontractprogrammer]

Maybe Foundry removed it in their latest version?

[@UrosOgnjenovic]

import {Test, stdError, console} from "forge-std/Test.sol";

[@SijoyThomas]

which ide is that? Visual Studio Code?

[@smartcontractprogrammer]

yes

[@thurendous]

I was wondering why dec() cost much less gas than inc(). Why?

[@MrCoreyTexas]

Great question, I have no idea either. I guess if you were writing a for loop to do something 10 times, it'd use less gas to go from 10 to 1 than from 1 to 10?

[@MrCoreyTexas]

I did this test and found the opposite result, going from 1 to 10 was cheaper than going from 10 to 1. I really don't know why dec() costs so little gas according to foundry.

[@Okeh189]

why do we write failing tests in foundry?

[@smartcontractprogrammer]

Test that smart contract fails under certain conditions for example - revert if msg.sender is not authorized

[@Okeh189]

@@smartcontractprogrammer btw bro u know solidity well, do u work somewhere? or taking youtube as full time?

[@MehreenMunsif]

There is an error "undeclare identifier" when writing "vm.expectRevert(stdError.arithmeticError)". It seems like the foundry doesn't recognize this and says "Undeclared Identifier" for Do you know why?

[@UrosOgnjenovic]

import {Test, stdError, console} from "forge-std/Test.sol";