pytest inspired reactive test runner with auto-discovery

Show and Tell
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I have a unit testing notebook, but I don’t like that I have to wrap each test with a function. Its a bunch of boiler plate that adds friction to testing, plus, it adds bloat to the implementation.

So I wrote a new way of discovering tests that looks for cells beginning with test_, just like pytest. Then, if the cell throws an error, then its assumed to have failed. It looks for cells across the whole runtime, not just in the opened notebook, so there is no need to have a direct dependancy between the implementation and the tests.

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I should add that the final consumer of this bird eye view of all tests will not be human but AI. Closed loop test driven development with AI is so much better than Cursor coz test provide certification that the AI produced executable and correct code.