Robot Framework: assign variable with if-else statement

Question

I use latest Robot Framework. I need to assign a value to my variable depending on value of an argument. That's how it would be in JavaScript:

ITEM_SELECTOR = RECENT_ITEM_SELECTOR + (
    position === 'last' ? ':last-child' : ':nth-child' + '(' + position + ')'
)

This is how I try to write it in Robot Framework:

${ITEM_SELECTOR} =    Run Keyword If    ${position} == 'last'    ${RECENT_ITEM_SELECTOR}:last-child
...    ELSE    ${RECENT_ITEM_SELECTOR}:nth-child(${position})

but this way ${RECENT_ITEM_SELECTOR}:nth-child(${position}) is considered a keyword, not assigned to ITEM_SELECTOR.

Then I try to preprend it with No Operation, but then my return value is considered its argument and I get Keyword 'BuiltIn.No Operation' expected 0 arguments, got 1.

How can I write it?

Bryan Oakley · Accepted Answer · 2016-06-24 12:39:26Z

9

Since you are calling run keyword if, you have to give it a keyword to run. You can use set variable to make your code work:

${ITEM_SELECTOR} =    Run Keyword If    ${position} == 'last'
...  Set variable    ${RECENT_ITEM_SELECTOR}:last-child
...  ELSE    
...  Set variable    ${RECENT_ITEM_SELECTOR}:nth-child(${position})

However, you can also use set variable if for a slightly more compact and readable solution:

${ITEM_SELECTOR} =    Set variable if    ${position} == 'last'
...  ${RECENT_ITEM_SELECTOR}:last-child
...  ${RECENT_ITEM_SELECTOR}:nth-child(${position})

answered Jun 24, 2016 at 12:39

Bryan Oakley

389k53 gold badges582 silver badges739 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

divix Over a year ago

Second option is much more readable.

Collectives™ on Stack Overflow

Robot Framework: assign variable with if-else statement

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related