Spy Packages

Tiny function for spying on function calls.

spy on istanbul coverage

Standalone test dummies, stubs, mocks, fakes and spies for JavaScript. Works with any unit testing framework.

one time pad management and encryption/decription library

For testing Javascript applications running as `"type": "module"` or `.mjs`, this esm-loader provides extended import syntax for mocking and stubbing built-in, package and module imports.

Tiny spy library

A simple mocking library for TypeScript

a reversible, transparent spy for functions/methods

Mock http requests made using fetch.

Easy to read, customisable mobx events logger based on mobx.spy.

Add an event listener without causing any side effects

Observe any object's method calls

watch, fake or block requests from puppeteer matching patterns

Sinon.JS test double mixins

node.js fs mixins for sinon-doublist

Standalone library for creating spies in Node.js. Easy to use. No dependancies.

Log the contents of vinyl file streams so you can see what files run through your gulp pipeline

m(icro)spy is a simple test spy implementation written in es6+

Library for mocking RequireJS dependencies

Angular2 ScrollSpy Service