Iterative improvement – red-green-refactor cycle for continuous code enhancement

Refactoring existing code in Angular applications can be a daunting task. You want to improve the code’s structure and organization, but the fear of introducing regressions (bugs) often looms large. This is where TDD steps in, offering a structured and iterative approach to navigate refactoring with confidence. At the heart of TDD lies the “red-green-refactor” cycle, a powerful technique for making incremental improvements to your code base while ensuring its functionality remains intact.

Imagine you’re a sculptor working on a large block of marble. The red-green-refactor cycle is like your roadmap to transforming that raw material into a masterpiece. Here’s a breakdown of each stage and its significance in the context of refactoring Angular code:

Red – setting the stage with failing tests

The cycle begins with red, signifying a failing test. This...