Specflow：为每个功能指定多个场景

Question

通过 SpecFlow 文档，我试图弄清楚我的看法是否错误。我想为每个功能指定几个完全不同的场景。

例如：

Feature: Serve coffee
    Coffee should not be served until paid for
    Coffee should not be served until the button has been pressed
    If there is no coffee left then money should be refunded

  Scenario: Buy last coffee
    Given there are 1 coffees left in the machine
    And I have deposited 1$
    When I press the coffee button
    Then I should be served a coffee

如果我想查看“提供咖啡”功能中的其他场景怎么办？例如，支付了钱但 5 分钟未按下按钮的场景。

有几个场景有意义还是我应该使用场景大纲？

谢谢！

Answer 1

每个功能的多个场景都可以，只要它们在逻辑上位于同一区域即可。如果您尝试解决不同的用例，我可能会建议将其作为新功能。在您的情况下，这两种情况似乎可以很好地适应相同的功能。

Scenario Outline 类似于 NUnit 中的TestCase，只有在相同的场景结构只需要采用不同的参数时才使用它。

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SpecFlow github 站点在 Scenario Outlines here 上有很好的文档。我将总结下面的代码示例。

给定一个功能的两个场景：

Scenario: eat 5 out of 12
  Given there are 12 cucumbers
  When I eat 5 cucumbers
  Then I should have 7 cucumbers

Scenario: eat 5 out of 20
  Given there are 20 cucumbers
  When I eat 5 cucumbers
  Then I should have 15 cucumbers

您可以使用轮廓参数化重复部分：

Scenario Outline: eating
  Given there are <start> cucumbers
  When I eat <eat> cucumbers
  Then I should have <left> cucumbers

  Examples:
    | start | eat | left |
    |  12   |  5  |  7   |
    |  20   |  5  |  15  |

此大纲替换了您尝试参数化的场景定义。

Answer 2

Feature: Serve coffee
  Coffee should not be served until paid for
  Coffee should not be served until the button has been pressed
  If there is no coffee left then money should be refunded

Scenario: Buy last coffee
  Given there are 1 coffees left in the machine
  And I have deposited 1$
  When I press the coffee button
  Then I should be served a coffee

Scenario: Store credit until a coffee is selected
  Given I have deposited 1$
  And I have left the machine for 5 minutes
  When I press the coffee button
  Then I should be served a coffee

您要问的是在功能文件中使用 specflow 场景的标准方式。所以答案是“是的，将与特定‘功能’相关的场景（在这种情况下，咖啡的供应时间和方式）放在单个功能文件中”。

如果您的咖啡机功能文件扩展为具有描述完全不同功能的额外场景，则将它们移动到不同的文件中。

例如

Feature: Coffee Machine Advertising video panel

Scenario: While my coffee is being served, I should be shown a 15 second advert.