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Back-end Engineering

3 learners

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

Computer Science Fundamentals

Lessons and practices

Lesson 1: Eliminating Code Duplication and Refactoring Magic Numbers in Ruby

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

Lesson 2: Refactoring Long Methods in Ruby Through Method Extraction

Refactoring User Registration Service by Extracting Validation Logic

Refactoring Address Validation into Separate Class

Refactoring User Data Normalization Logic in Ruby

Refactoring User ID Generation and Data Storage

Refactoring Result Type Extraction in User Registration Service

Lesson 3: Refactoring Complex Method Signatures in Ruby Using Parameter Objects

Refactoring with ScoreWeights Parameter Object in Ruby

Refactor process_exam_score with CoursePolicy Parameter Object

Refactor Parameter Ordering in process_exam_score Function

Refactor process_exam_score Function with Default Parameter Values

Lesson 4: Refactoring Feature Envy in Ruby Through Method Relocation

Refactoring Feature Envy in Ruby's Grade Analysis System

Refactoring Calculate Final Grade Method in Ruby's Student Class

Refactoring the get_failed_assignments Method in Ruby's Student Class

Refactoring StudentGrade Management into a Dedicated Collection Class

Lesson 5: Refactoring Large Classes in Ruby Through Class Extraction

Refactor Shopping Cart by Extracting CartItemCollection Class

Refactor Shopping Cart by Extracting PriceCalculator Class

Refactor ShoppingCart by Extracting DiscountCalculator Class

Implement Tests for Discount and Price Calculators in Ruby

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