rubocop is a Ruby code style checking tool. It aims to enforce the community-driven Ruby Style Guide.

Support utilities for RSpec gems.

Rspec-expectations provides a simple API to express expected outcomes of a code example.

SimpleCov is a code coverage framework for Ruby with a powerful configuration library and automatic merging of coverage across test suites.

Sorcerer generates Ruby code from a Ripper-like abstract syntax tree (i.e. S-Expressions). Sorcerer is targeted mainly at small snippets of Ruby code, expressible in a single line. Longer examples may be re-sourced, but they will be rendered in a single-line format.

minitest-focus gives the ability focus on a few tests with ease without having to use command-line arguments. It introduces a focus class method for use in testing classes, specifying that the next defined test is to be run.

Rake is a Make-like program where tasks and dependencies are specified in standard Ruby syntax.

This module provides a String#unindent Ruby method to unindent strings, which can be useful to unindent multiline strings embedded in already-indented code.

This package provides a JSON formatter for SimpleCov, the Ruby code coverage tool.

Hoe is a rake/rubygems helper for project Rakefiles. It helps manage, maintain, and release projects and includes a dynamic plug-in system allowing for easy extensibility. Hoe ships with plug-ins for all the usual project tasks including rdoc generation, testing, packaging, deployment, and announcement.

Mini-portile is a port/recipe system for Ruby developers. It provides a standard way to compile against specific versions of libraries to reproduce user environments.

Docile is a Ruby library that provides an interface for creating embedded domain specific languages (EDSLs) that manipulate existing Ruby classes.

Builder provides a number of builder objects that make it easy to create structured data. Currently the following builder objects are supported: XML Markup and XML Events.

Minitest provides a complete suite of Ruby testing facilities supporting TDD, BDD, mocking, and benchmarking.

Hoe is a rake/rubygems helper for project Rakefiles. It helps manage, maintain, and release projects and includes a dynamic plug-in system allowing for easy extensibility. Hoe ships with plug-ins for all the usual project tasks including rdoc generation, testing, packaging, deployment, and announcement.

The mime-types library provides a library and registry for information about Multipurpose Internet Mail Extensions (MIME) content type definitions. It can be used to determine defined filename extensions for MIME types, or to use filename extensions to look up the likely MIME type definitions.

Cucumber HTML Formatter produces a HTML report for Cucumber runs. It is built on top of cucumber-react and works with any Cucumber implementation with a protocol buffer formatter that outputs Cucumber messages.

Rspec-expectations provides a simple API to express expected outcomes of a code example.

This Ruby library provides a JSON implementation written as a native C extension.

mime-types-data provides a registry for information about Multipurpose Internet Mail Extensions (MIME) media type definitions. It can be used with the Ruby mime-types library or other software to determine defined filename extensions for MIME types, or to use filename extensions to look up the likely MIME type definitions.

Minitest bonus assertions provides extra MiniTest assertions. For instance, it provides assert_true, assert_false and assert_set_equal.

Introspection provides tools to inspect the hierarchy of method definitions on a Ruby object.

shoulda is a meta-package combining shoulda-context and shoulda-matchers providing tools for writing tests.

Dhall.rb is a Ruby implementation of the Dhall configuration language. Dhall is a memory safe and non-Turing-complete configuration language.