空手道 API - 数字 [0-9] 或 null 的常规 exp

Question

I am trying this below regular exp in karate api automation to check the field value is numeric[0-9] or null value. but its not giving correct results. Can anyone help on this?

The regular exp is '#regex (?:[0-9]{1}|null)'

Example: From the below JSON sometimes sisters/brothers response will be integers or null. So I want to validate with regex to ensure it has integers/null data.

"info": { "Name": Tomas, "Age": 29, "Sisters": 1, "Brothers": null,

    }

Answer 1

I found the answer, the below reg exp is working

• match response.info.sisters == '##regex [0-9]{1}'

thanks