在 Robot Framework 中解析布尔值

Question

Robot Framework User Guide, section 6.6 Boolean arguments 说：

Many keywords in Robot Framework standard libraries accept arguments that are handled as Boolean values true or false. If such an argument is given as a string, it is considered false if it is either empty or case-insensitively equal to false or no. Other strings are considered true regardless their value, and other argument types are tested using same rules as in Python.

如何在我自己的用户关键字中复制这种行为？

内置关键字Convert To Boolean更严格：

Converts the given item to Boolean true or false.

Handles strings True and False (case-insensitive) as expected, otherwise returns item's truth value using Python's bool() method.

Answer 1

robot.utils 中有两个函数用于处理布尔参数 - is_truthy 和 is_falsy。日期时间使用 is_falsy。要表现得像那个库，您可以简单地调用这些库使用的相同函数。下面是 is_falsy 在 Robot 语法中的实现，以及使用它来转换参数的示例关键字。您还可以根据需要使用相同的评估语句转换参数并避免相互依赖。

*** Test Cases ***
Boolean
  [Template]    Some Keyword
  truE
  
  FAlsE
  no
  [=10=]

*** Keywords ***
Some Keyword
    [Arguments]    ${option}
    ${option as bool}    Is Truthy    ${option}
    Log To Console    ${option} -> ${option as bool}

Is Truthy
  [Arguments]    ${arg}
  ${arg as bool}    Evaluate    robot.utils.is_truthy($arg)    modules=robot
  [Return]    ${arg as bool}

在 Robot Framework 中解析布尔值

Parsing booleans in Robot Framework

robotframework