Your Tests Passed. That Is Not the Same as Correct.
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A green test suite does not mean your code is correct; it means you have not found the failure yet. Dijkstra's warning is a reminder to write tests that try to break your code, not tests that confirm it. That discipline matters more now that AI produces code which passes the easy tests while hiding the case that will fail in the field. In 1970 Edsger Dijkstra wrote a sentence every engineer should remember: "Program testing can be used to show the presence of bugs, but never to show their…
1Key Takeaways
- A green test suite does not mean your code is correct; it means you have not found the failure yet.
- Dijkstra's warning is a reminder to write tests that try to break your code, not tests that confirm it.
- That discipline matters more now that AI produces code which passes the easy tests while hiding the case that will fail in the field.
- In 1970 Edsger Dijkstra wrote a sentence every engineer should remember: "Program testing can be used to show the presence of bugs, but never to show their….
2AIWedia Score
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that a green test suite does not mean your code is correct; it means you have not found the failure yet.
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