Ouzo\Utilities\Objects::toString PHP Method

    public static function toString($var)
    {
        switch (gettype($var)) {
            case 'boolean':
                return self::booleanToString($var);
            case 'NULL':
                return "null";
            case 'string':
                return "\"{$var}\"";
            case 'object':
                return self::objectToString($var);
            case 'array':
                return self::arrayToString($var);
        }
        return "{$var}";
    }

 /**
  * @test
  * @dataProvider toBoolean
  * @param $string
  * @param $expected
  */
 public function shouldConvertToBoolean($string, $expected)
 {
     //when
     $toBoolean = Booleans::toBoolean($string);
     //then
     $this->assertEquals($expected, $toBoolean, 'To convert: ' . Objects::toString($string) . ' Expected: ' . Objects::toString($expected));
 }