example\ApplicatorLiftTest::test_it_should_sum_all_from_one_list_with_elements_from_second PHP Метод

    public function test_it_should_sum_all_from_one_list_with_elements_from_second()
    {
        $listA = Listt::of([1, 2]);
        $listB = Listt::of([4, 5]);
        // sum <*> [1, 2] <*> [4, 5]
        $result = f\liftA2('example\\sum', $listA, $listB);
        $this->assertInstanceOf(Listt::class, $result);
        $this->assertEquals([5, 6, 6, 7], f\valueOf($result));
    }