Light Weight Test Runner for Stackblitz

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Scenario

We have a function sum(x:number, y:number) and we want to test it on Stackblitz.

Approach

Dependencies

We will use assert to verify test results.

assert

@types/assert

Approach

Open a new Stackblitz Typescript project. Creates sum.ts and sum.spec.ts .

sum.ts

export function sum(x:number, y:number):number {
   return x+y
}

sum.spec.ts

import { deepEqual } from 'assert'
import { sum } from './sum'
export function testSum() {
   deepEqual(sum(1,1), 2, 'It should produce 2')
}

Import sum.spec.ts into index.ts and run testSum() .

Demo

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