Ouzo\Utilities\Iterator\FluentIterator::fromFunction PHP Метод

    public static function fromFunction($generator)
    {
        return new self(Iterators::generate($generator));
    }

 /**
  * @test
  */
 public function shouldGenerateValues()
 {
     //when
     $generator = function () {
         return 1;
     };
     $result = FluentIterator::fromFunction($generator)->limit(3);
     //then
     $this->assertEquals(array(1, 1, 1), $result->toArray());
 }