diff --git a/apps/server/internal/db/sqlc/db_test.go b/apps/server/internal/db/sqlc/db_test.go
new file mode 100644
index 0000000..939c714
--- /dev/null
+++ b/apps/server/internal/db/sqlc/db_test.go
@@ -0,0 +1,22 @@
+package db
+
+import (
+	"testing"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/stretchr/testify/assert"
+)
+
+type mockTx struct {
+	pgx.Tx
+}
+
+func TestWithTx(t *testing.T) {
+	q := &Queries{}
+	tx := &mockTx{}
+
+	qWithTx := q.WithTx(tx)
+
+	assert.NotNil(t, qWithTx)
+	assert.Equal(t, tx, qWithTx.db)
+}