Creating a Chai like assertion library using proxies

Javascript UI Libraries Development Tools JavaScript Framework

Sinon.JS Landing Page
1

Sinon.JS

Standalone test spies, stubs and mocks for JavaScript.
Pricing:
- Open Source
Assertions on mock functions (compatible with sinonjs and tinyspy).

#Developer Tools #Testing #Front End Package Manager 24 social mentions
Mochajs Landing Page
2

Mochajs

Mocha is a JavaScript test framework running on Node.js and the browser, making asynchronous testing simple.
Pricing:
- Open Source
While this is fine and I could have perfectly moved all my tests to use said assertion style, I like the descriptive way Jest tests look like. As a quick way to maintain certain similarity I reached for ChaiJS, an assertion library that is mainly used with mocha. Chai offers expect like assertions that can arguably be more descriptive than Jest’s. Instead of writing expect(…).toBe(true), you’d write expect(…).to.be.true. For the most part I managed to do a search and replace for this.

#Development Tools #Javascript UI Libraries #JavaScript Framework 104 social mentions
Chai Landing Page

3

Chai

Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework.

While this is fine and I could have perfectly moved all my tests to use said assertion style, I like the descriptive way Jest tests look like. As a quick way to maintain certain similarity I reached for ChaiJS, an assertion library that is mainly used with mocha. Chai offers expect like assertions that can arguably be more descriptive than Jest’s. Instead of writing expect(…).toBe(true), you’d write expect(…).to.be.true. For the most part I managed to do a search and replace for this.

#Developer Tools #Testing #Front End Package Manager 4 social mentions