Pester provides a framework for running Unit Tests to execute and validate PowerShell commands inside of PowerShell. Pester follows a file naming convention for naming tests to be discovered by pester at test time and a simple set of functions that expose a Testing DSL for isolating, running, evaluating and reporting the results of Powershell commands.
SubSpec allows developers to write declarative tests operating at all layers of abstraction consisting of highly composable, small primitive concepts. Based on the powerful xUnit testing framework, SubSpec is easy to integrate with existing testing environments.
Midje is a test framework for Clojure. I created it to support top-down as well as bottom-up testing, to encourage readable tests, to provide a smooth migration path from clojure.test and to support a balance between abstraction and concreteness.
Flaky is a plugin for nose or py.test that automatically reruns flaky tests. Ideally, tests reliably pass or fail, but sometimes test fixtures must rely on components that aren't 100% reliable. With flaky, instead of removing those tests or marking them to @skip, they can be automatically retried.