What is test driven development is a software development method where tests are written before writing the actual code. Developers first create a test for a feature, then write code to pass that test, and finally improve the code while keeping the test passing.
How it helps long-term maintenance
- Code stays clean and structured, making it easier to update later
- Tests catch issues early when changes are made
- Reduces risk of breaking existing features during updates
- Makes debugging faster and simpler
- New developers can understand the code easily through tests
- Saves time and cost in long-term project maintenance
In simple terms, what is test driven development helps teams keep software stable, scalable, and easy to maintain as it grows over time.
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