Add more Cookie tests (create new StaticCookie class for mocking setcookie())

tests/Util/StaticCookie.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Friendica\Test\Util;
+
+use Friendica\Model\User\Cookie;
+
+/**
+ * Overrides the Cookie class so all cookie information will be saved to a static public variable
+ */
+class StaticCookie extends Cookie
+{
+	/** @var array static Cookie array mock */
+	public static $_COOKIE = [];
+	/** @var int The last expire time set */
+	public static $_EXPIRE;
+
+	protected function setCookie(string $name, string $value = null, int $expire = null, bool $secure = null)
+	{
+		self::$_COOKIE[$name] = $value;
+		self::$_EXPIRE = $expire;
+	}
+
+	public static function clearStatic()
+	{
+		self::$_EXPIRE = null;
+		self::$_COOKIE = [];
+	}
+}