Knock On Wood

A simple testing framework for TypeScript

• Features
• Build
• Usage
• Motivation
• Release Notes

Features

• Use in Node.JS or in the browser
• Asynchronous design
• Asynchronous capable setup and teardown functions before and after each test group and/or test

Build

git clone https://github.com/ethossoftworks/knock-on-wood.git
cd knock-on-wood
yarn                 # or npm install
yarn build           # or npm run build

# yarn test          # Run testing script
# yarn test-inspect  # Run testing script with chrome dev-tools inspector

Usage

Add to Project

npm install @ethossoftworks/knock-on-wood
# or
yarn add @ethossoftworks/knock-on-wood

Write a Basic Test

import { runTests, test, assert } from "@ethossoftworks/knock-on-wood"

const mainGroup = group("Main", () => {
    test("myFirstTest", () => {
        assert(1 === 1)
    })
})

runTests([mainGroup])
    .then(() => {})
    .catch(() => {})

Or

import { runTests, test, assert } from "@ethossoftworks/knock-on-wood"

const mainGroup = () => {
    test("myFirstTest", () => {
        assert(1 === 1)
    })
})

runTests({"Main Group": mainGroup})
    .then(() => {})
    .catch(() => {})

Write a Basic Test With a Context

import { runTests, test, assert } from "@ethossoftworks/knock-on-wood"

type Context = {
    username: string
    password: string
}

const context: Context = {
    username: "foo",
    password: "bar",
}

const mainGroup = (context: Context) => {
    test("myFirstTest", async () => {
        assert(context.username === "foo")
    })
}

runTests({ Main: mainGroup(context) })
    .then(() => {})
    .catch(() => {})

Use Multiple Contexts With Same Tests

import { runTests, test, assert } from "@ethossoftworks/knock-on-wood"

type Context = {
    username: string
    password: string
}

const endUserContext: Context = {
    username: "user",
    password: "password"
}

const adminUserContext: Context = {
    username: "admin",
    password: "root"
}

const mainTests = (context: Context) => {
    test("login", async => () => {
        await login(context.username, context.password)
        assert(true)
    })
    test("getData", async => () => {
        await getData()
        assert(true)
    })
}

const adminTests = (context: Context) => {
    test("deleteUser", async () => {
        assert(true)
    })
}

runTests({
    "End User Tests": mainTests(endUserContext),
    "Admin Tests": () => {
        mainTests(adminUserContext)
        adminTests(adminUserContext)
    })
    .then(() => {})
    .catch(() => {})

Setup/Teardown

import { runTests, beforeAll, beforeEach, afterAll, afterEach, assert, test } from "@ethossoftworks/knock-on-wood"

const mainGroup = () => {
    beforeAll(async () => {
        console.log("Before all tests in group")
    })
    beforeEach(async () => {
        console.log("Before each test in group")
    })
    afterEach(async () => {
        console.log("After each test in group")
    }),
        afterAll(async () => {
            console.log("After all tests in group")
        })

    test("myFirstTest", async () => {
        assert(context.username === "foo")
    })
}

runTests(mainGroup)
    .then(() => {})
    .catch(() => {})

Motivation

Knock-On-Wood had a few motivating factors:

1. The desire to run the same tests across different type-safe test contexts (i.e. testing different account credentials).
2. Not wanting to learn a huge testing framework; just the need for something with a simple API and reasonable flexibility.

Asynchronous Design

I test a lot of asynchronous code and with Async/Await it doesn't hurt to simply always assume that every test might not return immediately. I mainly did not want the cognitive load of having two different ways to write tests for asynchronous vs. synchronous tests.

This Works In The Browser?

Sure. Why not? Sometimes it's just easier test things in the browser without dealing with Node.JS (i.e. DOM access or browser APIs). I didn't see the need to force users to use Node.JS to use this framework. They are welcome to, but I didn't want to box anyone into a corner. Not including Node.JS specific dependencies allows Knock-On-Wood to be more flexible.

Release Notes

2.1.0

• Added alternate runTests constructor
• Added group method

2.0.1

• Converted build system to rollup

2.0.0

• New API design