Are you adopting the TH3 approach for your codebase? One of the distinguishing things about SQLite is the DO-178B TH3. Not sure if any other open source database have that.
http://www3.sqlite.org/th3.html
The TH3 test is proprietary and, IIRC, it might only be available to SQLite Consortium members and that's $125k/year. We do pay for SQLite support at Fly.io but not quite to that level.
We do have plans to run against the Tcl test suite[1] although most of that test suite is not applicable to LiteFS since it tests higher level constructs.
Since LiteFS acts on the raw pages, it really just functions similar to a VFS. Out of the 130K source lines of code in SQLite, only 4.8k are for the Unix VFS. As such, the testing coverage from the SQLite test suite mostly tests non-VFS code.
