Cest

Cest is a small and light test runner for typescript.

I got frustrated with how slow Jest was at running tests, so I made this. It's simple and works.

Installation

npm install @fleetplannerscollective/cest

Write some tests

import cest from '@fleetplannerscollective/cest' // import cest
import { strict as assert } from 'assert' // use the default assertion library from node

const test = cest('my test suite') // Create a suite

test(                // define a test
    'passing test',  // give the test a name
    () => {          // create a funtion to run the test
        assert(true) // if the function doesn't throw an error, the test passes
    }
)

test(
    'failing test', 
    () => {
        assert(false) // if the function throws an error, the test fails
    }
)

test(
    'should throw', 
    () => {
        const t = () => {throw new Error()}
        assert.throws(t, Error) // For tests which should throw an error, use assert.throws, provided by node.js
    }
)

test(
    'async test', 
    async () => { // Cest handles async tests fine
        await new Promise((resolve) => {resolve(true)})
    }
)

test.run() // run all the tests

Run all tests

Use the cli tool:

cest [path/to/ts/dir]

Cest will identify all .test.ts files in the path, find .tsconfig locate the compiled .js files and run them. Cest will also identify all .test.js files in the path and run them.

Run a single test suite without CLI

You can run a sinlge test suite by directly calling the .js file node mytest.js

Run tests programatically

import cest from '@fleetplannerscollective/cest'

const result = cest.runner('path to tests')
if (result) {
    // tests passed
} else {
    // tests failed
}

Development

• Clone the repo.
• Install dev dependencies npm install.
• Run npm run build
• Run npm run test

To remove the dist folder for a completely fresh build npm run clean.

To incrementally rebuild whilst working npm run watch.