The test that tests me
The article discusses the challenges of writing code and tests, where both can pass but still be wrong. The author emphasizes the importance of being aware of blind spots when writing tests.
Why it matters
This article highlights the importance of critical thinking and awareness of limitations when writing code and tests, to avoid false positives and ensure the software is working correctly.
Key Points
- 1Writing code and tests come from the same context window, with the same blind spots
- 2The dangerous case is when both the code and test pass, but are still wrong
- 3A mirror doesn't catch what the mirror can't see
Details
The article explores the idea that writing code and the corresponding tests can be a tricky process, as both come from the same context window and share the same blind spots. The author emphasizes that the dangerous case is not when the test fails, but when both the code and the test pass, yet they are still wrong. This is because a mirror, or a test, cannot catch what it is unable to see. The author suggests that developers need to be aware of these blind spots and limitations when writing tests to ensure the code is truly functioning as intended.
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