separate TestCase for redirect tests

tests/WithoutTenancy/TestCase.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\Tests\WithoutTenancy;
+
+abstract class TestCase extends \Stancl\Tenancy\Tests\TestCase
+{
+    protected function getPackageProviders($app)
+    {
+        return []; // We will provide TenancyServiceProvider in tests
+    }
+}