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Why It's Never Too Late to Add Tests to Your Codebase

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Writing automated tests gives developers the confidence to modify code without fear of breaking unrelated functionality or missing edge cases. The primary purpose of testing is not immediate bug detection but making code easier to change safely over time. Developers are encouraged to start small by writing unit tests for critical functions before gradually moving to integration and end-to-end tests. AI tools can accelerate the process of writing tests, though developers should review AI-generated output carefully to ensure correctness and edge-case coverage. Establishing a testing culture within a team, even incrementally, can significantly reduce future development friction.

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Why It's Never Too Late to Add Tests to Your Codebase · ShortSingh