chai VS jasmine

Let's configure tests with mocha, chai and sinon on Typescript in a few steps.

These options totally depend on your requirements. For example an empty hardhat option is a very basic project sample if you need more libraries, plugins or you use Typescript later, you have to add them manually. Like @nomiclabs/hardhat-waffle , [ethereum-waffle](https://www.npmjs.com/package/ethereum-waffle), chai , @nomiclabs/hardhat-ethers , ethers , [@openzeppelin/contracts](https://www.npmjs.com/package/@openzeppelin/contracts) Because, they'll allow us to interact with Ethereum and to test our contracts.

For those of you wondering what a "Chaijs" is like I was: https://github.com/chaijs/chai

> BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.

ES6 test setup with Mocha and Chai.

It'd be hard for me to imagine what would it be like back then to write tests if it wasn't for Enzyme. Even with Enzyme, it was noticeably harder than it is today, and I still vividly remember installing and configuring in my project Mocha, Chai, Sinon, and JSDOM, to get pretty much the same tooling that today a single library - Jest - provides out of the box, while adding numerous features on top of that.

The library offers a BDD testing style and fully exploits javascript promises - the resulting tests are simple, clear and expressive. Chakram is built on node.js, mocha, chai and request.

For this example, I am using Mocha, plus Chai for its BDD expect syntax and the chai-as-promised plugin for asynchronous matchers.

chai

Jasmine is a behavior-driven development framework for testing JavaScript code. It's known for its clean, straightforward syntax and does not rely on any other JavaScript frameworks or a Document Object Model (DOM). Jasmine is often praised for its simplicity and ease of use in both frontend and backend testing environments.

The test frameworks section provides an in-depth look at MochaJS, Jest, Jasmine, Puppeteer, Selenium, and Playwright. We review each framework's ease of use, community support, and overall robustness, supplemented with example unit tests.

Vitest makes it effortless to migrate from Jest. It supports the same Jasmine like API.

JavaScript Popular tools for testing: Mocha, Jasmine, Unit JS, Jest

Internet Explorer is not actively tested anymore due to Internet Explorer retiring on June 15, 2022 and jasmine v4 has dropped IE support https://github.com/jasmine/jasmine/blob/main/release_notes/4.0.0.md

To execute your tests, you can create test scripts using popular testing frameworks like Mocha, Jasmine, or Jest. These frameworks provide a structured way to organize and run your tests, report results, and handle assertions.

Testing frameworks like Jest, Mocha, and Jasmine are crucial for software development, ensuring code reliability and correctness. They offer features like test suites, test cases, assertions, and asynchronous testing support.

The test framework used does matter for naming, because in some frameworks you'd use different naming conventions (i.e. the fluent naming used with https://jasmine.github.io/)

Learn more about Jasmine and Karma