fetch-mock

fetch-mock

Features include:

• mocks most of the fetch API spec, even advanced behaviours such as streaming and aborting
• declarative matching for most aspects of a http request, including url, headers, body and query parameters
• shorthands for the most commonly used features, such as matching a http method or matching one fetch only
• support for delaying responses, or using your own async functions to define custom race conditions
• can be used as a spy to observe real network requests
• can be extended with your own reusable custom matchers that can be used both for matching fetch-calls and inspecting the results
• isomorphic, and supports either a global fetch instance or a locally required instance

Requirements

@fetch-mock requires either of the following to run:

• Node.js 18+ for full feature operation
• Any modern browser that supports the fetch API
• node-fetch when testing in earlier versions of Node.js (this is untested, but should mostly work)

Documentation and Usage

See the project website

License

fetch-mock is licensed under the MIT license. Copyright © 2024, Rhys Evans

Similar packages

Other packages similar to fetch-mock

nock

Nock is a HTTP mocking and expectations library for Node.js. It intercepts HTTP requests and allows you to define custom responses. Compared to fetch-mock, Nock is more focused on Node.js and works with any HTTP library, not just fetch.

msw

Mock Service Worker (MSW) is a library for mocking network requests in both browser and Node.js environments. It uses Service Workers to intercept requests in the browser, making it more versatile for front-end testing compared to fetch-mock.

axios-mock-adapter

Axios Mock Adapter is a library specifically designed for mocking requests made with the Axios HTTP client. It provides a simple API for defining request handlers and responses. While fetch-mock is designed for the Fetch API, axios-mock-adapter is tailored for Axios.