Ouzo\Utilities\Iterator\FluentIteratorTest::shouldFilterIteratorElements PHP Метод

    public function shouldFilterIteratorElements()
    {
        //given
        $iterator = new \ArrayIterator(array('a', 'pref_a', 'pref_b', 'b'));
        //when
        $result = FluentIterator::from($iterator)->filter(FluentFunctions::startsWith('pref'))->reindex();
        //then
        $this->assertEquals(array('pref_a', 'pref_b'), $result->toArray());
    }