用黄瓜测试分页特征

Question

我正在学习和喜欢黄瓜,现在有一个功能我不确定通过BDD继续进行的最佳方式:分页.我有一些场景(在我看来),其中有零页面,一页,几页等,并且我想确定某些页面上的某些记录,确保"下一步"按钮不是链接时最后一页等

我将使用will_paginate,所以基本上我想弄清楚如何将BDD的功能用于特定的项目列表,例如书籍.

我相信我可以搞砸它,但我觉得这应该是常见的,并希望看到别人做了什么.任何人都可以推荐一篇文章,或者指出一些示例代码,甚至可以自己一个例子？

Answer 1

您可能可以使用场景大纲来保持功能文件中的重复,但要注意它会扩展到大量实际运行的场景,因此它会比您预期的要慢.这样的事情应该可行,假设每页5本书.我将把步骤定义作为练习,但它们应该非常简单.

我还应该提一下,我实际上并没有运行它,因此请考虑任何语法错误.

Feature: Book Browsing Pagination

  Scenario: No results
    Given I have 0 books
    When I view all books
    Then I should see "No results" on the page

  Scenario: Some results
    Given I have 3 books
    When I view all books
    Then I should see "Book 1"
    And I should see "Book 2"
    And I should see "Book 3"

  Scenario: Page links
    Given I have <count> books
    When I view all books from page <page>
    Then I should see a link to page <target page>

    Examples:
      | count | page | target page |
      |   8   |   1  |       2     |
      |   8   |   2  |       1     |
      |  13   |   1  |       2     |
      |  13   |   1  |       3     |
      |  13   |   2  |       1     |
      |  13   |   2  |       3     |
      |  13   |   3  |       1     |
      |  13   |   3  |       2     |

  Scenario: Page links for current page
    Given I have <count> books
    When I view all books from page <page>
    Then I should see a disabled pagination link to page <page>

    Examples:
      | count | page |
      |   8   |  1   |
      |   8   |  2   |
      |  13   |  1   |
      |  13   |  2   |
      |  13   |  3   |

  Scenario: Next Page links
    Given I have <count> books
    When I view all books from page <page>
    Then I should see a link "Next Page"

    When I click "Next Page"
    Then I should be on page <next page> # assert against query params maybe?
    # alternately, to keep page requests down, one could use something like:
    # Then I should see a link "Next Page" going to "?p=<next page>"

    Examples:
      | count | page | next page |
      |   8   |   1  |      2    |
      |  13   |   1  |      2    |
      |  13   |   2  |      3    |

  Scenario: Next Page links on last page
    Given I have <count> books
    When I view all books from page <page>
    Then I should see a disabled pagination link "Next Page"

    Examples:
      | count | page |
      |   8   |   2  |
      |  13   |   3  |

类似的方案可用于检查上一个/第一个/最后一个的链接状态,并且您可以添加一些后续点击页面链接方案,类似于下一页方案正在执行的操作(如果需要).您可能还想添加额外的示例以检查您的分页是否正好为5,因为我选择的示例也会通过,如果分页是每页6.取决于您检查分页功能的确切目标.

如果你最终决定除了will_paginate以外的其他东西,那么你需要考虑改变的唯一事情可能是一些步骤(比如禁用的分页).

当你提到要求链接时,这也可能是一个很好的博客文章;)