harlequin is a Ruby wrapper for linear and quadratic discriminant analysis in R for statistical classification. Also allows means testing to determine significance of discriminant variables.

Happybara is an integration testing platform providing a webserver in Ruby that accepts connections over a websocket where test clients can dispatch RPCs to Ruby from a different language like JavaScript.

Rails factory testing with a very clean interface.

"Just for testing how to implement a gem"

Heisenberg is an REST API integration testing tool for rack based REST APIs

The module collects gems used for development and testing.

Chaos Testing tool for Ruby apps

A load testing gem that compares one or many sites using Siege.

This tool can be used to fake webservice APIs for testing proposals.

Captures the Response objects from HTTParty, Mechanize, Net::HTTP, HTTPClient and Rack::Test and abstracts them for use in testing libraries.

Provides a simple way to double HTTP services, APIs etc, for testing.

Spin up a jetty instance (maybe even the one at https://github.com/projecthydra/hydra-jetty) and wrap test in it. This lets us run tests against a real copy of solr and fedora.

A lightweight testing framework for Ruby programs.

RSpec matchers for testing the completeness of interpolation arguments in locale files

✓ Semantically awesome testing library

Simple console application for testing HTTP server

Better syntax for testing whether an object is in a list

Allows injecting the Rails env into a class for testing purpose.

An amazingly simple way to test & debug with assertions -- right in your code! Allows you to test inline without writing any seperate unit tests as everything is mixed into pour code. This helps ensure, for web apps like Rails, that if something has gone wrong that shouldn't it gets reported in y...

Use bunny gem in your tests without running RabbitMQ