What you'll learn

Utilize test-driven development principles to design and implement clean test specs in Ruby
Master the syntax and structure of RSpec, the most popular Ruby Gem for testing
Reduce dependencies in your test suite by mocking objects with class and instance doubles
Explore the wide collection of RSpec matchers available to test your code

Requirements

Intermediate knowledge of the Ruby programming language (classes, objects, data structures, etc)
Modern version of Ruby (>2.4)
Text editor (VSCode is recommended)

Description

Welcome to Testing Ruby with RSpec: The Complete Guide!

This course offers a comprehensive overview of the RSpec testing library for the Ruby programming library. RSpec is the most popular Ruby Gem of all time, with over 300 million downloads to date.

If you're new to the topic, testing is the practice of "writing code that confirms that other code works as expected". Tests control for regressions, which are changes to the code that break the program.

The benefits of testing extend outside of the codebase. Adopting a test-driven approach will also make you a better developer. Tests force you to think critically about the program and its features: the classes, the objects, the methods and more.

Testing Ruby with RSpec begins with the essentials and proceeds to more complex topics including:

Installation

Project Initialization

Test-Driven Development (TDD)

let variables

before and after Hooks

Subjects

Shared Examples

Shared Context

Built-in Matchers

Mocks and Doubles

Instance Doubles

Class Doubles

As a software engineer and consultant who's worked with Ruby for several years, I'm excited to introduce you to the awesome RSpec library, its elegant syntax, and all of its fun quirks.

Thanks for checking out the course!

Who this course is for:

Intermediate Ruby developers interested in upgrading their skill set
Programmers who want to explore the fundamentals of testing and TDD