Mocking and stubbing library with JMock/SchMock syntax, which allows mocking and stubbing of methods on real (non-mock) classes.

RSpec's 'test double' framework, with support for stubbing and mocking

Instantiate one with `redis = MockRedis.new` and treat it like you would a normal Redis object. It supports all the usual Redis operations.

Decreases the need to write integration tests by ensuring that the things you stub or mock actually exist.

RR is a test double framework that features a rich selection of double techniques and a terse syntax.

Spy is a mocking library that was made for the modern age. It supports only 2.1.0+. Spy by default will raise an error if you attempt to stub a method that doesn't exist or call the stubbed method with the wrong arity.

Stubbing and mocking that doesn't hurt or suck. WIN.

A mocking library in the spirit of the Bacon spec library. Small, compact, and works with Bacon.

A fast, tiny (82 lines) hybrid mocking library that supports classical and partial mocking. Partial mocking mixes classical mocking with real objects. There's no monkey patching `Object` or copying. Mock objects are isolated leaving real objects completely untainted.

Framework to aid in handrolling mock/spy objects.

Simple cross process stubbing

A simple stub & mock library.

FlexMock is a extremely simple mock object class compatible with the Minitest framework. Although the FlexMock's interface is simple, it is very flexible.

Contract tests for rspec