think\Config::range PHP Method

    public static function range($range)
    {
        self::$range = $range;
        if (!isset(self::$config[$range])) {
            self::$config[$range] = [];
        }
    }

 public function testConfig()
 {
     App::run();
     $this->assertTrue(Config::has('url_route_on'));
     $this->assertEquals(1, Config::get('url_route_on'));
     Config::set('url_route_on', false);
     $this->assertEquals(0, Config::get('url_route_on'));
     Config::range('test');
     $this->assertFalse(Config::has('url_route_on'));
     Config::reset();
 }