test: move all db tests to dbtest package (#251)

prerequisite before moving to a separate go module. Tests, which were
not executed in a real db were kept in the same place as before

Taskfile.yml

@@ -79,4 +79,4 @@ tasks:
   docker:test:
     cmds:
       - docker compose down -v --remove-orphans
-      - docker compose run testfixtures go test -v -tags 'postgresql sqlite mysql sqlserver cockroachdb clickhouse spanner'
+      - docker compose run testfixtures go test -v -tags 'postgresql sqlite mysql sqlserver cockroachdb clickhouse spanner' ./...

clickhouse_test.go → dbtests/clickhouse_test.go

@@ -1,6 +1,6 @@
 //go:build clickhouse
 
-package testfixtures
+package dbtests
 
 import (
 	"os"

cockroachdb_test.go → dbtests/cockroachdb_test.go

@@ -1,11 +1,12 @@
 //go:build cockroachdb
 
-package testfixtures
+package dbtests
 
 import (
 	"os"
 	"testing"
 
+	"github.com/go-testfixtures/testfixtures/v3"
 	_ "github.com/jackc/pgx/v4/stdlib"
 	_ "github.com/lib/pq"
 )
@@ -18,8 +19,8 @@ func TestCockroachDB(t *testing.T) {
 			t,
 			db,
 			dialect,
-			DangerousSkipTestDatabaseCheck(),
-			UseDropConstraint(),
+			testfixtures.DangerousSkipTestDatabaseCheck(),
+			testfixtures.UseDropConstraint(),
 		)
 	}
 }