Tests that catch bugs and survive refactors.
What it does
Guides test design and review so tests catch broken observable behavior without failing on internal refactors.
When to use it
Use when writing, changing, or deciding whether to keep a test.
How to use it
It changes how the agent writes and reviews project tests, requiring assertions on observable contracts rather than internal implementation.
What you provide
- An existing project
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What you need · 0
No setup requirements listed.
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