Chai VS Sinon.JS

Mocha as the test runner, Chai as the assertion library, and the Hardhat Chai Matchers to extend Chai with contracts-related functionality. - Source: dev.to / almost 2 years ago

Assertion library we used: Chai (comes with a lot of plugins worth exploring). - Source: dev.to / about 2 years ago

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... - Source: dev.to / about 2 years ago

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. - Source: dev.to / almost 3 years ago

If you are using a mocking library, such as sinon, jest-mock, or ts-mockito, make sure that it is compatible with Jest. You may need to install additional packages or configure them in your configuration file. For example, to use sinon with Jest, you can install the sinon-jest package and add the following to your configuration file:. - Source: dev.to / 2 months ago

Mocha is a test runner, Chai is an assertion library, Sinon is a mocking library, this normally the combination you would need to use if you choose mocha, but there are others. Source: about 1 year ago

Instead, use pure functions + dependency inject your stubs (e.g. Parameter to function). Also note, no need for Sinon or some other test double library. JavaScript is so good nowadays to easily make objects/classes/functions or any combination thereof on the fly that are terse. - Source: dev.to / about 1 year ago

I've had some good experiences with Ava + Sinon. I've personally disliked Jest because it seemed to do some weird trickery in the background that prevented me from using ES modules. Source: about 1 year ago

🤖 You can use the Mocha testing framework with the Chai assertion library to write tests for your Express controller. You can also use the Sinon library to mock the database calls. This will allow you to test the controller without actually making a call to the database. You can also use the SuperTest library to make HTTP requests to the controller and test the response. - Source: dev.to / about 1 year ago