expect

expect

This package exports the expect function used in Jest. You can find its documentation on Jest's website.

Changelog

30.2.0

Chore & Maintenance

• [*] Update example repo for testing React Native projects (#15832)
• [*] Update jest-watch-typeahead to v3 (#15830)

Features

• [jest-environment-jsdom-abstract] Add support for JSDOM v27 (#15834)

Fixes

• [babel-jest] Export the TransformerConfig interface (#15820)
• [jest-config] Fix jest.config.ts with TS loader specified in docblock pragma (#15839)

Similar packages

Other packages similar to expect

chai

Chai is a BDD/TDD assertion library for node and the browser that can be paired with any javascript testing framework. It offers a similar range of matchers and assertions as expect, and it provides a fluent chainable language to construct assertions.

should

Should.js is an expressive, readable, framework-agnostic assertion library. The key difference is in the style of assertions it offers, using a more fluent chainable API that reads like English.

assert

Assert is a module that provides a set of assertion functions for verifying invariants. It is built into Node.js and is less feature-rich compared to expect, but it serves as a simple way to write assertions in a Node.js environment.

jest

Jest is a delightful JavaScript Testing Framework with a focus on simplicity. It comes with its own assertion library, which provides functionality similar to expect, as expect is actually part of Jest.