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

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

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

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.

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

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

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

Framework to aid in handrolling mock/spy objects.

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

A simple stub & mock library.

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.

Simple cross process stubbing

Contract tests for rspec

Simple Minitest helper to replace values such as an instance variable of an object or an environment variable for the duration of a block or a group of tests. This comes in very handy when you have to derive from default configuration in order to test some aspects of your code.