Can you mock API requset?

[david-hung]

Hello, so I was trying to request data from a chainlink oracle, like the Google Weather Oracle, but they only have a kovan test network? Is there a way to request API data using my local network to test, because it's difficult getting lots of Kovan. I'm not sure how or if it's possible to mock a API request, like how he does its with the VRF in the video

If you can help thanks!

[PatrickAlphaC]

Yes!

You have two options.

1. Run a local chainlink node yourself (not advised)
2. Use a mock (like what we do with VRF)

In our hardhat-starter-kit we actually have examples of working with mock API calls! Check it out:

https://github.com/smartcontractkit/hardhat-starter-kit

[david-hung]

Thank you, this hardhat repository is awesome. I think a video would help people understand oracles more.
BTW how do I determine the jobID's when using a local network?
Does the APIConsumer actually retrieve data from the oracle, because the test only return the hard coded value 777?

[PatrickAlphaC]

You'd have to contact the node operator to get the jobId. Some nodes post their information online.

When we run our local tests, we mock being a chainlink node, so no it doesn't actually retreive the data from the oracle. When we run on a testnet or mainnet it does.