Initial

system/Test/Mock/MockCommon.php

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+<?php
+
+/**
+ * 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.
+ */
+
+if (! function_exists('is_cli')) {
+    /**
+     * Is CLI?
+     *
+     * Test to see if a request was made from the command line.
+     * You can set the return value for testing.
+     *
+     * @param bool $newReturn return value to set
+     */
+    function is_cli(?bool $newReturn = null): bool
+    {
+        // PHPUnit always runs via CLI.
+        static $returnValue = true;
+
+        if ($newReturn !== null) {
+            $returnValue = $newReturn;
+        }
+
+        return $returnValue;
+    }
+}