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  • Jacek Nitkiewicz thinks this is interesting:

When your project has a suite of automated tests, it acts like a safety net for the developers. Rather than spending an inordinate amount of time studying and understanding the target code, the developer can simply implement the feature (or fix the problem) with a simpler understanding of just the immediate target code. She can safely do so because she knows that any unforeseen adverse consequences will be caught by the automated tests.

From

Cover of The Art of Lean Software Development

Note

Hmm. Niektórzy zamiast "simpler understanding" zdają się stosować "no understanding", bo przecież są testy.