What is @types/enzyme?
The @types/enzyme package provides TypeScript type definitions for Enzyme, a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output. It allows developers to write more robust and maintainable tests by providing a simpler way to simulate user interactions, manage component state, and inspect the rendered output. The type definitions ensure that TypeScript users can leverage Enzyme in a type-safe manner, benefiting from compile-time type checking and IntelliSense in their IDE.
What are @types/enzyme's main functionalities?
Shallow Rendering
Shallow rendering is useful to constrain yourself to testing a component as a unit, and to ensure that your tests aren't indirectly asserting on behavior of child components. The code sample demonstrates how to perform a shallow render of a React component using Enzyme.
import { shallow } from 'enzyme';
import MyComponent from './MyComponent';
const wrapper = shallow(<MyComponent />);
console.log(wrapper.debug());
Full DOM Rendering
Full DOM rendering is ideal for use cases where you have components that may interact with DOM APIs, or require the full lifecycle to be executed (including componentDidMount, componentDidUpdate, etc.). This code sample shows how to mount a component in the DOM using Enzyme, allowing you to test component lifecycle and behavior.
import { mount } from 'enzyme';
import MyComponent from './MyComponent';
const wrapper = mount(<MyComponent />);
console.log(wrapper.debug());
Static Rendering
Static rendering is used to render the component to static HTML and analyze the resulting HTML structure. It's useful for generating HTML snapshots of components. The code sample illustrates how to statically render a component and log its text content.
import { render } from 'enzyme';
import MyComponent from './MyComponent';
const wrapper = render(<MyComponent />);
console.log(wrapper.text());
Other packages similar to @types/enzyme
@testing-library/react
Similar to Enzyme, React Testing Library is a very popular library for testing React components. Unlike Enzyme, React Testing Library focuses on testing components in a way that simulates actual user interactions more closely, encouraging better testing practices by relying on the component's output rather than its internal state or lifecycle methods.
react-test-renderer
This package provides a React renderer that can be used to render React components to pure JavaScript objects, without depending on the DOM or a native mobile environment. It's similar to Enzyme's static rendering but is officially maintained by the React team. It's useful for snapshot testing.
Installation
npm install --save @types/enzyme
Summary
This package contains type definitions for Enzyme (https://github.com/airbnb/enzyme).
Details
Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/enzyme
Additional Details
- Last updated: Tue, 09 Jul 2019 23:33:22 GMT
- Dependencies: @types/react, @types/cheerio
- Global values: none
Credits
These definitions were written by Marian Palkus https://github.com/MarianPalkus, Cap3 http://www.cap3.de, Ivo Stratev https://github.com/NoHomey, jwbay https://github.com/jwbay, huhuanming https://github.com/huhuanming, MartynasZilinskas https://github.com/MartynasZilinskas, Torgeir Hovden https://github.com/thovden, Martin Hochel https://github.com/hotell, Christian Rackerseder https://github.com/screendriver, Mateusz Sokoła https://github.com/mateuszsokola, Braiden Cutforth https://github.com/braidencutforth, and Erick Zhao https://github.com/erickzhao.