How to assert Karate response with dynamic field name-CodePudding

API response example:

{
    "topic1": [
        {"fieldName2": "value2",fieldName1": "value1"}
    ],
    "topic2": [
        {"fieldName2": "value2","fieldName1": "value1"},
        {"fieldName2":"anotherValue2","fieldName1": "anotherValue1"}
    ]
}

This will work:

Then match response.topic1 == [{"fieldName2": "value2",fieldName1": "value1"}]
And match response == {"topic1":[{"fieldName2": "value2",fieldName1": "value1"}]}

But I need "topic1" to be in a variable like this but cant find a way to make it work.

Then match response.TOPIC_NAME== [{"fieldName2": "value2",fieldName1": "value1"}]

Also tried response.<TOPIC_NAME> and match response contains message only but also not working.

    * print "KAFKA_TOPIC: ", KAFKA_TOPIC
    * print "response.KAFKA_TOPIC:", response.KAFKA_TOPIC
    * print "response.topic1: ", response.topic1

Logs:

11:47:47.946 [main]  INFO  com.intuit.karate - [print] KAFKA_TOPIC: topic1
11:47:47.949 [main]  INFO  com.intuit.karate - [print] response.KAFKA_TOPIC: null
11:47:47.951 [main]  INFO  com.intuit.karate - [print] response.topic1:  [
  {
    "fieldName1": "value1",
    "fieldName2": "value2",
    "fieldName2": "value3"
  }
]

Trying now to explore https://github.com/karatelabs/karate#json-transforms if there's no direct approach.

CodePudding user response：

You can access JSON with dynamic keys like this: object[keyName]. This is just JS behind the scenes. This example should make your options clear:

* def response =
"""
{
  "topic1": [
    {
      "field1": "value1"
    }
  ]
}
"""
* def key1 = 'topic1'
* def val1 = response[key1]
* match val1 == [{ field1: 'value1' }]
# to do this in one line
* match (response[key1]) == [{ field1: 'value1' }]