Gherkin 语法中的数组占位符

Posted 2023-02-23

【中文标题】Gherkin 语法中的数组占位符

【英文标题】：Array placeholder in Gherkin syntax

【发布时间】：2015-03-12 15:42:18

【问题描述】：

您好，我正在尝试用 gherkin 语法来表达一组需求，但它需要大量重复。我看到here 我可以使用非常适合我的任务的占位符，但是我的 Given 和 then 中的一些数据是集合。我将如何在示例中表示集合？

Given a collection of spaces <spaces>
    And a <request> to allocate space
When I allocate the request
Then I should have <allocated_spaces>

Examples:
| spaces | request | allocated_spaces |
|  ?     |  ?      |  ?               |

【参考方案1】：

有点hacky，但你可以分隔一个字符串：

Given a collection of spaces <spaces>
    And a <request> to allocate space
When I allocate the request
Then I should have <allocated_spaces>

Examples:
| spaces    | request | allocated_spaces |
|   a,b,c   |  ?      |  ?               |

Given(/^a collection of spaces (.*?)$/) do |arg1|
  collection = arg1.split(",")  #=> ["a","b","c"]
end

【参考方案2】：

您可以使用Data Tables。我以前从未尝试在数据表中使用参数，但理论上它应该可以工作。

Given a collection of spaces:
| space1        |
| space2        |
| <space_param> |
And a <request> to allocate space
When I allocate the request
Then I should have <allocated_spaces>

Examples:
| space_param | request | allocated_spaces |
|  ?          |  ?      |  ?               |

给定的数据表将是Cucumber::Ast::Table 的一个实例，请查看 ruby​​doc 的 API。

【讨论】：

我现在已经对其进行了测试，它确实有效。这应该是正确的答案。并且比用户使用列更好。

【参考方案3】：

这是一个示例，再次使用拆分，但没有正则表达式：

  Scenario Outline: To ensure proper allocation
    Given a collection of spaces <spaces>
      And a <request> to allocate space
     When I allocate the request
     Then I should have <allocated_spaces>

    Examples:
      | spaces       | request | allocated_spaces |
      | "s1, s2, s3" | 2       | 2                |
      | "s1, s2, s3" | 3       | 3                |
      | "s1, s2"     | 3       | 2                |

我使用 cucumber-js，所以代码可能是这样的：

Given('a collection of spaces stringInDoubleQuotes', function (spaces, callback) 
    // Write code here that turns the phrase above into concrete actions
    this.availableSpaces = spaces.split(", ");
    callback();
);

Given('a int to allocate space', function (numToAllocate, callback) 
    this.numToAllocate = numToAllocate;
    // Write code here that turns the phrase above into concrete actions
    callback();
);

When('I allocate the request', function (callback) 
    console.log("availableSpaces:", this.availableSpaces);
    console.log("numToAllocate:", this.numToAllocate);
    // Write code here that turns the phrase above into concrete actions
    callback();
);

Then('I should have int', function (int, callback) 
    // Write code here that turns the phrase above into concrete actions
    callback(null, 'pending');
);