How to simulate a fake PR?

[jrson83]

My action queries the last PR with pulls.listFiles and then assigns a label to the issue with issues.addLabels.

I have read the documentation several times and looked at many examples which I found through the github search. I can't figure out, how can I create a fake PR to use it with the tests. Is it possible to simulate or create a fake pull request before the action test runs?

I created a gist with the code I have tried. If you have any suggestions I would be pleased.

[cardinalby]

Hi! Looked quickly at your gist, I believe you chose the right approach with mocking API. Creating and then deleting a temporary PR using API can be also an option. Will look at it during the week. Can you compose your gist to a repo so that I can test it locally?

[jrson83]

Thanks! Yeah sure, I will do and update the link here.

[cardinalby]

Hi! Is it still relevant?

I came with 2 suggestions regarding your need.

First

You can manually create a test PR, look at its ID and put this ID into options githubContext:

options.setGithubContext({ payload: { pull_request: { number: YOUR_HARDCODED_ID } } })

This way you don't need to mock API.

You can even use a separate repo if you don't like bloating your main repo. In this case use

options.setGithubContext({ 
    payload: { pull_request: { number: YOUR_HARDCODED_ID } },
    repository: 'owner/repo'
})

Second

You can extract the code of your action into a function and call it passing API client:

export async function runAction(apiClient) { 
   ... 
}

runAction(new Octokit({ auth: token })

And use Single Function Target to run the function in an emulated Action environment. This way you can mock ApiClient by normal jest mocks:

import {runAction} from 'main.js'

const apiMock = createJestMock()

const target = RunTarget.asyncFn(
    async () => runAction(apiMock), 
    'path/to/action.yml'
);
const result = target.run(RunOptions.create( ... ))

[jrson83]

Sorry I didn't reply. Thank you very much I will take a look at it again.