Ouzo\Tests\Assert::thatBool PHP Метод

    public static function thatBool($string)
    {
        return BooleanAssert::that($string);
    }

 /**
  * @test
  */
 public function isPresentShouldReturnTrueForNotNull()
 {
     //given
     $optional = Optional::fromNullable(new stdClass());
     //when
     $present = $optional->isPresent();
     //then
     Assert::thatBool($present)->isTrue();
 }