TIL: Some parts of SQLite testing are proprietary tests.
It’s worth noting that almost all of this testing was already in place when somebody decided to run AFL to fuzz-test it. (There was a lobste.rs post about it last year.) The description of SQLite’s testing process is incredibly affirming to me as someone who cares about software quality, and yet it still didn’t catch everything. But perhaps it does now - AFL is now part of its test suite.