A mock payment UI SDK for building React and Next.js checkout flows before payment gateway approval

Mock payment provider servers for testing BizUp Pay — DO NOT use in production

Mock payment-protected API server for testing agents (supports x402, AP2, etc.)

**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).

The industry standard for API mocking in JavaScript.

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Easy and powerful mocking of AWS SDK v3 Clients

Mock a canvas in your jest tests.

Type safe mocking extensions for jest

Axios adapter that allows to easily mock requests

fetch mock for jest

A Mock API for AWS Kinesis

Type safe mocking extensions for vitest, forked from jest-mock-extended

This library emulates ioredis by performing all operations in-memory.

Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.

React components for Stripe.js and Stripe Elements

Mock payment adapter for testing vn-payment flows locally

Mock `window.Date` when run unit test cases with jest. Make tests of `Date` easier.

Mock http requests made using fetch

Caching mock fetch implementation for all runtimes and frameworks.