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It is definitely neat, but I think it's more than an exercise. I believe he runs it through the extensive SQLite test suite (I've seen that before, though I can't see where that's stated now).

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The bits in https://gitlab.com/cznic/sqlite/-/blob/master/tcl_test.go run the full suite of SQLite TCL tests as part of a Go test. That's in turn run as part a CI setup with results at https://modern-c.appspot.com/-/builder/?importpath=modernc.o....

Those are not all the tests for SQLite: https://sqlite.org/testing.html#harnesses

Only the TCL and SQL Logic Test are publicly available; it's one of the ways that the SQLite developers get paid.

You are correct, I should have clarified that it's just the publicly-available tests. Still, those are pretty expansive.

My understanding was that the sqlite test suite is closed source, and kept under pretty tight grip as it represents their competitive advantage to anyone trying to fork sqlite.

Pretty sure the lead dev said something along those lines when he did an episode of Corecursive?

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