Let your documentation be your testing suite.
Write JSDoc style doc examples on all your functions and then test them using doctest-js.
Contents
npm install @supabase/doctest-jsCreate a JSDoc style @example on any functions that you want tested.
/**
* Returns the sum of 2 numbers
*
* @example sum(1, 2)
* //=> 3
*/
export const sum = (a, b) => {
return a + b
}Note that the expected return value must be prefixed by //=>.
Import the doctest function in your test suite and point it at the file.
import doctest from '@supabase/doctest-js';
describe('Doctests', () => {
// file paths are relative to root of directory
doctest('src/sum.js')
doctest('src/someOtherFile.js')
})You can run multiple tests for the same function.
/**
* @example sum(1, 2)
* //=> 3
* @example sum(3, 4)
* //=> 7
*/
export const sum = (a, b) => {
return a + b
}Testing classes requires you to pass a newed up instance of the class into the test itself. Here is a simple example:
// Arithmetic.js - a basic class which we need to test
class Arithmetic {
constructor() {}
/**
* @example add(1, 2)
* //=> 3
*/
add(a, b) {
return a + b
}
}
export { Arithmetic }// Arithmetic.test.js
const { Arithmetic } = require('./Arithmetic.js')
describe('passing doctest', () => {
doctest('./Arithmetic.js', { instance: new Arithmetic() })
})See this in the wild:
- Fork the repo on GitHub
- Clone the project to your own machine
- Commit changes to your own branch
- Push your work back up to your fork
- Submit a Pull request so that we can review your changes and merge
- Inspired by Elixir Doctests
- Original fork of mainshayne223/doctest-js. See issue #1.
Ready for production! Watch and star this repo to keep updated on releases.
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