问存根实例方法在第二次调用时使用minitest返回不同的值

EN

test "crawler does not paginate if no new items in next page" do
    # 1: A, B
    # 2: B, D => D
    # 3: A => stop
    crawler = CrawlJob.new
    first_page = [
        {"id"=> "item-A"},
        {"id"=> "item-B"}
    ]
    second_page = [
        {"id"=> "item-B"},
        {"id"=> "item-D"}
    ]
    third_page = [{"id"=> "item-A"}]

    # can only stub with same second page
    # but I want to respond with third page
    # the second time get_next_page is called
    crawler.stub :get_next_page, second_page do
        items, times_paginated = crawler.paginate_feed(first_page)
        assert times_paginated == 3
    end
end