Chore: Update test database initialization (#81673)

* streamline initialization of test databases, support on-disk sqlite test db

* clean up test databases

* introduce testsuite helper

* use testsuite everywhere we use a test db

* update documentation

* improve error handling

* disable entity integration test until we can figure out locking error

pkg/services/libraryelements/libraryelements_test.go

@@ -44,12 +44,17 @@ import (
 	"github.com/grafana/grafana/pkg/services/user"
 	"github.com/grafana/grafana/pkg/services/user/userimpl"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 	"github.com/grafana/grafana/pkg/web"
 )
 
 const userInDbName = "user_in_db"
 const userInDbAvatar = "/avatar/402d08de060496d6b6874495fe20f5ad"
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 func TestDeleteLibraryPanelsInFolder(t *testing.T) {
 	scenarioWithPanel(t, "When an admin tries to delete a folder that contains connected library elements, it should fail",
 		func(t *testing.T, sc scenarioContext) {