Welcome to Testing Ruby withRSpec:The Complete Guide!

This course offers a comprehensive overview of theRSpec testing library for theRuby programming language. 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. Tests give you the confidence to refactor existing code because you know that you will honor the original purpose of the code.

The benefits of testing extend outside of your codebase. In this course, we'll cover test-driven development (TDD), a methodology in which we write our tests first, before the implementation. Test-driven development often leads to simpler, more decoupled code. Thus, testing can 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 withRSpec begins with the RSpec 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 withRuby for 5+ 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!