test(db): verify migrations stub loads embedded files and returns ErrNotConfigured

internal/db/db_test.go

@@ -0,0 +1,13 @@
+package db
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestMigrateStubLoadsEmbeddedFiles(t *testing.T) {
+	err := Migrate()
+	if !errors.Is(err, ErrNotConfigured) {
+		t.Errorf("Migrate stub err = %v, want ErrNotConfigured", err)
+	}
+}