RSpec

RSpec is the primary testing tool for Ruby (especially Rails). It focuses on "Behavior Driven Development" (BDD), making tests read like documentation specifications.

When to Use

• Ruby on Rails BDD Testing: The standard Behavior-Driven Development testing framework for Ruby and Rails applications.
• Expressive Specification Design: Writing readable, self-documenting specifications using describe, context, and it.
• Database & Model Validation: Testing ActiveRecord validations, scopes, and associations with shoulda-matchers.
• Comprehensive Mocking & Stubbing: Isolating dependencies using instance_double and allow().to receive().

Quick Start