Asserting and using conditions for an array response in Karate - api

Question

I've got a request that returns a list of responses in two possible structures, depending on the 'status'.
{
"listSize": 2,
"itemList": [
{
"id": ,
"Name": "",
"submittedOn": "",
"Reference": null,
"status": "Receipted",
"response": null
},
{
"id": 12345,
"submittedOn": "",
"Reference": null,
"status": "Failed",
"response": {
"xml": "",
"formErrors": [
{
"error_type": "",
"error_location":"",
"error_message": "",
}
]
}
},
]
}
I need to check the structure for the status being either 'Receipted' or 'Failed'. In Java I would use a for loop and an if statement within it to check the response field with different criteria depending on the 'status' field. (Example below)
for (int i = 0; i < response.length; i++){
if (response[i].status.equals("receipted")){
//do something
}
else{ //failed
//do something else
}
}
How could I achieve something similar in Karate? Should I use a Java Helper?

Answer 1

First, you are encouraged to write static expected results in tests. That said there are multiple ways to do this, here's one:
* def failedSchema = { xml: '#string', formErrors: '#array' }
* def isValid = function(x){ if (x.status == 'Receipted') return x.response == null; return karate.match(x.response, failedSchema).pass }
* match each response.itemList == '#? isValid(_)'
Here's another example: https://stackoverflow.com/a/62567412/143475
There are other ways to loop in Karate, but not really designed for matching: https://github.com/intuit/karate#loops
Here's an extreme example involving JSON transformation to make it easier to match: https://stackoverflow.com/a/53120851/143475
Also refer: https://github.com/intuit/karate#conditional-logic