Karate: How to Use Logical Control in Karate

[nuanyang233]

Now I have a problem. Assume that before I request the A interface, I need to request the B interface and decide whether it needs to request the A interface based on whether the value returned by the B interface is null. How do I do this in karate? I read the document do not know if eval can meet my needs？

like this

`

get B response

• eval if ( Bresponse == {} )
  path '……'
  path '……'
  `

[ptrthomas]

@nuanyang233 anything is possible, please read this answer on Stack Overflow: https://stackoverflow.com/a/50350442/143475

the last line can be * eval if (condition) karate.call('some.feature')

[nuanyang233]

Thank you, I still have a question. Does karate have shortcuts to help me get to the last element when using get to fetch elements from an array?

[ptrthomas]

yes. actually this is easy in JsonPath: https://stackoverflow.com/a/45029709/143475

Also read the karate docs.

    * def list = [1, 2, 3, 4]
    * def last = get[0] list[-1:]
    * match last == 4

you can also use JS

    * def list = [1, 2, 3, 4]
    * def last = list[list.length-1]
    * match last == 4

[nuanyang233]

I think I fell in love with karate