Most tests opened a throwaway panel DB with database.InitDB, which runs the
full AutoMigrate + seed on an empty file every time: ~230ms, and ~850ms under
-race because GORM's reflection-heavy migration is what the detector slows
most. internal/web/service does this in ~550 of its 830 tests, so the CI race
job spent ~10 of its ~14.6 minutes re-migrating empty databases.
internal/database/dbtest.InitDB migrates once per test process, then hands
each test its own copy of that file (~130ms under -race) and registers the
CloseDB cleanup. The copy then goes through InitDB like a panel restart, so
every test still starts from the state a fresh install has. Tests that reopen
an existing file, migrate a hand-built legacy DB or target Postgres keep
calling database.InitDB.
Locally under -race: internal/web/service 626s (last CI run) -> 114s,
internal/sub 246s -> 35s.
The SQLite panel's Restore now detects the upload by content like the
PostgreSQL panel does: migration dumps are rebuilt with RestoreSQLite,
pg_dump archives get a clear error instead of 'Invalid db file format',
and every upload passes the panel-schema pre-flight before Xray stops.
The .backup fallback survives a failed Xray start and is named in the
error, the DB pool is reopened on every error path after CloseDB, and a
failed InitDB closes the imported file before restoring the fallback so
the rename cannot hit a Windows sharing violation.
MHSanaei