lesson-9 00-mocks vs 01-deploy

[TimeKeyRoll]

We have 00-mock and 01-deploy scripts for deployment.

However we are mentioning about VRFCoordinatorV2Mock in 01-deploy like--
if (developmentChains.includes(network.name)) { vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")

so 01-deploy is the merge of 00-mock and 01-deploy` ?

But We have already 00-mock script. So what use do we have of 00-mock script. if other script contains both of the scripts in one?

I understand how scripts are getting written. What i don't understand is the difference or usage of 00-mock script.

Easy explanation would be helpful. :)

[alymurtazamemon]

@MasterofBlockchain 00-mock script simply deploys the mock contract and the 01-deploy script uses it.

[TimeKeyRoll]

You are correct but its 00-mock is already been written then why do we have to deploy mock contract in 01-deploy --like its mentioned below.

if (developmentChains.includes(network.name)) { vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")

[alymurtazamemon]

@MasterofBlockchain 01-deploy use mock contract and deploy lottery contract not mock

[TimeKeyRoll]

await ethers.getContract("VRFCoordinatorV2Mock") does that mean 01-deploy is trying to fetch the 00-mock contract from 00-mock while using getContract keyword?

so its not again trying to deploy mock contract but trying to fetch while using getContract?

[alymurtazamemon]

@MasterofBlockchain Hmm! Yes

[TimeKeyRoll]

Got it! So when we run npx hardhat deploy .. it shows us two deployments one for mocks and other for the lottery contract. right? so this fetch all the data from 01-deploy (because mock account is also being fetched right into 01-deploy) or does it use 00-mock and 01-deploy for deployments?

Sorry man! this is confusing me. lol

[krakxn]

See, first of all there is an order precedence : 00 and 01

Consequently, our "00 deploy mocks" script is used first by Hardhat--which essentially deploys our Mock contract.

Only then is our "01 deploy" is used.

Why is the Mock being used in the actual deployment (i.e. "01 deploy")? Because for local networks we need the Mock. We do not use it for testnet deployments. This is precisely the need for it in your "01 deploy" script.

This is also why if you straight up run the second script on a local network w/o deploying your Mock, it will lead to an error resembling "cannot get mock xyz"

[TimeKeyRoll]

wonderful! thankyou man! Appreciated.

[krakxn]

Good luck!