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system/Test/Mock/MockAppConfig.php

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+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Test\Mock;
+
+use Config\App;
+
+class MockAppConfig extends App
+{
+    public string $baseURL         = 'http://example.com/';
+    public string $uriProtocol     = 'REQUEST_URI';
+    public array $proxyIPs         = [];
+    public bool $CSPEnabled        = false;
+    public string $defaultLocale   = 'en';
+    public bool $negotiateLocale   = false;
+    public array $supportedLocales = [
+        'en',
+        'es',
+    ];
+}