Comment by tlrobinson

"The SQL Logic Test or SLT test harness is used to run huge numbers of SQL statements against both SQLite and several other SQL database engines and verify that they all get the same answers. SLT currently compares SQLite against PostgreSQL, MySQL, and Microsoft SQL Server. SLT runs 7.2 million queries comprising 1.12GB of test data."

It seems MySQL could share a good chunk of SQLite's tests. If I were MySQL, I'd run these in addition to their own test suites. It was nice of SQLite to set it up for them ;)