RSpec

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117 stars · 51 forks observed · 2026-09-27

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

RSpec is Ruby's behaviour-driven development (BDD) testing framework, composed of modular libraries: rspec-core (spec runner), rspec-expectations (readable matchers), rspec-mocks (test doubles), and rspec-rails (drop-in Rails integration replacing Minitest). Tests are written as plain-English specifications of application behaviour.

Use cases

• test a ruby on rails application with rspec instead of minitest
• write readable behaviour-driven specs for ruby code
• mock and stub dependencies in unit tests with test doubles
• run a test suite from the command line with flexible reporting
• express expected outcomes with composable matchers

When to choose

• you're building a Rails app and want a mature, idiomatic alternative to Minitest
• you prefer BDD-style, plain-English specifications over xUnit assertions
• you need a modular setup where the runner, matchers, and mocking libraries can be used independently

When to avoid

• you're on an unsupported or very old Rails version without a matching rspec-rails major version
• your team is standardized on Minitest and doesn't want a second testing stack
• you need a framework-agnostic test runner for non-Ruby languages

Facets

library · maturity stable

testing e2e-testing mocking testing web-development developer-tools ruby cli bdd test-framework rails spec-runner test-doubles matchers

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