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Back-end Engineering

Refactoring with Confidence Using Tests in Ruby & RSpec

This course hones in on the Refactor stage of TDD, equipping developers to recognize code smells and resolve them with refactoring techniques. Through practical examples, learn to detect common inefficiencies, implement refactoring strategies, and ensure functionality with existing tests.

RSpec

Ruby

See path

5 lessons

22 practices

3 hours

Course details

Eliminating Code Duplication and Refactoring Magic Numbers in Ruby

Preview

Refactoring and Simplifying Test Setup in ShoppingCart Class

Refactoring Tests in ShoppingCart to Reduce Duplication Using Parameterized Tests

Refactoring Duplicated Logic in ShoppingCart Class

Refactoring ShoppingCart Class to Eliminate Duplication in Totals Calculation

Refactoring Magic Numbers in ShoppingCart Class

Previous Course

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I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

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I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11