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/secrets/kvstore/migrations/datasource_mig_test.go

@@ -20,8 +20,13 @@ import (
 	secretskvs "github.com/grafana/grafana/pkg/services/secrets/kvstore"
 	secretsmng "github.com/grafana/grafana/pkg/services/secrets/manager"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 )
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 func SetupTestDataSourceSecretMigrationService(t *testing.T, sqlStore db.DB, kvStore kvstore.KVStore, secretsStore secretskvs.SecretsKVStore, compatibility bool) *DataSourceSecretMigrationService {
 	t.Helper()
 	cfg := &setting.Cfg{}

pkg/services/secrets/kvstore/plugin_test.go

@@ -8,8 +8,13 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"github.com/grafana/grafana/pkg/plugins/backendplugin/secretsmanagerplugin"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 )
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 // Set fatal flag to true, then simulate a plugin start failure
 // Should result in an error from the secret store provider
 func TestFatalPluginErr_PluginFailsToStartWithFatalFlagSet(t *testing.T) {

pkg/services/secrets/manager/manager_test.go

@@ -20,9 +20,14 @@ import (
 	"github.com/grafana/grafana/pkg/services/secrets/database"
 	"github.com/grafana/grafana/pkg/services/sqlstore"
 	"github.com/grafana/grafana/pkg/setting"
+	"github.com/grafana/grafana/pkg/tests/testsuite"
 	"github.com/grafana/grafana/pkg/util"
 )
 
+func TestMain(m *testing.M) {
+	testsuite.Run(m)
+}
+
 func TestSecretsService_EnvelopeEncryption(t *testing.T) {
 	testDB := db.InitTestDB(t)
 	store := database.ProvideSecretsStore(testDB)