How to add new key in json using karate.set()

Hi i am trying to add new key and value to json using karate.set but its not working getting exception as invalid varibale name, below is my code:

Backgroung: * def myjson = {name: 'test', start_date: '27-04-2017'} * def localDateTime = Java.type("java.time.LocalDateTime").now() Scenario: * string endDate = 'myjson.end_date' * def endDateTmp = karate.eval(endDate) * eval if (endDateTmp == null) karate.set(myjson,'$.end_date',localDateTime) 

Exception:

java.lang.RuntimeException: javascript evaluation failed: if (endDateTmp == null) karate.set(myjson,'$.end_date',localDateTime) at com.intuit.karate.ScriptBindings.eval(ScriptBindings.java:115) at com.intuit.karate.ScriptBindings.updateBindingsAndEval(ScriptBindings.java:103) at com.intuit.karate.ScriptBindings.evalInNashorn(ScriptBindings.java:88) at com.intuit.karate.Script.evalJsExpression(Script.java:362) at com.intuit.karate.StepDefs.eval(StepDefs.java:581) Caused by: java.lang.RuntimeException: invalid variable name: {name:test, start_date:27-04-2017} at com.intuit.karate.Script.validateVariableName(Script.java:553) at com.intuit.karate.Script.setValueByPath(Script.java:1480) at com.intuit.karate.Script.setValueByPath(Script.java:1455) at com.intuit.karate.ScriptBridge.set(ScriptBridge.java:101) at jdk.nashorn.internal.scripts.Script$23$\^eval\_.:program(<eval>:1) 

If key already exist then trying to set is working, please suggest me how to add new key using karate.set() or any other way to do it.

Thanks in advance.

1 Answer

I think you need to read through the Karate documentation and examples a little more carefully and also be clear about some JS concepts.

* def myjson = { name: 'test', start_date: '27-04-2017' } * def localDateTime = Java.type("java.time.LocalDateTime").now() * if (!myjson.end_date) myjson.end_date = localDateTime + '' * print myjson 

Which results in:

[print] { "name": "test", "start_date": "27-04-2017", "end_date": "2018-07-05T18:13:07.547" } 

Note that I converted the Java Date to a String via concatenation. I leave how to format it correctly the way you want as a homework for you. Refer the example here for some hints: