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Back-end Engineering

136 learners

Refactoring by Leveraging Your Tests with TypeScript & Jest

This course focuses on the Refactor step in TDD, teaching developers to spot code smells and resolve them through refactoring. Using real-world examples, you'll identify common issues, apply refactoring techniques, and ensure functionality is preserved with existing tests.

Jest

TypeScript

See path

5 lessons

22 practices

3 hours

Computer Science Fundamentals

Course details

Eliminating Duplicated Code: Extract Functions and Refactor Magic Numbers

Preview

Refactor Duplicated Code in the Tests

Refactor Tests using Parameterization

Extract Function: calculateItemCost

Refactor duplication between calculate functions

Refactor Magic Numbers to Constants

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