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danger-testing
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This project was created to allow a developer to test their DangerJS dangerfile
through Jest unit testing.
It also works with testing imported DangerJS plugins.
:warning: This project is currently going through ramp up development.
Some things may change, some things may not work. Submit issues if you find any.
This package requires a minimum Danger and Jest version to function but it may function with future and previous versions as well. Create an issue/discussion if you test a version outside the required versions that you have found that works.
Until published install via direct GitHub link
$ npm install danger-testing --save-dev
This project assumes that Danger and Jest are already installed in your project.
Move dangerfile checks into a function or separate functions if you haven't done so previously.
// dangerfileFunctions.ts
// break your checks into functions that are exported.
// 📢 optionally, put all the functions inside a bigger function
// that's exported to test closer to how Danger would report.
export const checkLineAdditions = () => {
if (danger.github.pr.additions > 500) {
warn('PR exceeds number of lines added')
}
}
Create a test file like dangerfile.spec.ts
to write your tests.
// dangerfile.spec.ts
import { dangerTesting, warn } from 'danger-js-testing'
import { checkLineAdditions } from '../dangerfile'
it('should call warn function if PR additions exceed 500 lines of code', async() => {
await dangerTesting(checkLineAdditions, {
github: {
pr: {
additions: 900,
},
},
})
expect(warn).toHaveBeenCalledWith(
'PR exceeds number of lines added'
)
expect(warn).toHaveBeenCalledTimes(1)
})
Takes inspiration from the documentation on the Danger website and myself wanting to have an easy way to test Danger during development.
The dangerTesting
function accepts two arguments. One is the dangerfile
function you have
written for your tests. The second is the mock override we attach to the global danger
object.
When dangerTesting
is called it updates the global mock and then calls the passed in function.
This module exports danger like global mock functions like fail
, markdown
, message
, and warn
,
to allow you to check that they are called as expected.
FAQs
Easy to use testing of DangerJS/dangerfile
The npm package danger-testing receives a total of 1 weekly downloads. As such, danger-testing popularity was classified as not popular.
We found that danger-testing demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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Streamline your login process and enhance security by enabling Single Sign-On (SSO) on the Socket platform, now available for all customers on the Enterprise plan, supporting 20+ identity providers.
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