Related

Async Testing

jest

Test asynchronous code

Snapshot Testing

jest

Test component snapshots

React Testing

jest

Test React components

jest/dom

DOM Testing

Test DOM elements

jest
dom
elements

Command

expect(element).toBeInTheDocument()

Explanation

Jest DOM provides custom matchers for testing DOM elements and their properties.

Examples

Element is in document

expect(element).toBeInTheDocument()

Element has class

expect(element).toHaveClass("active")

Element has text

expect(element).toHaveTextContent("Hello")

More

Install Jest

jest

Install Jest testing framework

Coverage Report

jest

Generate test coverage report

Mock Functions

jest

Create mock functions for testing