I am using Karate framework and trying to match two feature file json responses are similar, where the date tag has different values so I want to ignore the values but make sure the fields are present.. please find the example below

test1.feature

• def test1Response = response1.json

an example : {"active":true, "createdBy":"2025-03-27T12:35:32.000Z", "version": 2}

test2.feature

• def test2Response = response2.json

an example : {"active":true, "createdBy":"2025-03-25T02:35:32.000Z", "version": 2}

now we do the check using

• match test1Response contains test2Response
• match test1Response == test2Response

the above match always fails, not sure how to validate the payloads and ignore the tag values required but same time ensuring the structure is correct.

I know there are other approach where we can go through each tag and validate but consider the payload is huge and complex.

I am using Karate framework and trying to match two feature file json responses are similar, where the date tag has different values so I want to ignore the values but make sure the fields are present.. please find the example below

test1.feature

• def test1Response = response1.json

an example : {"active":true, "createdBy":"2025-03-27T12:35:32.000Z", "version": 2}

test2.feature

• def test2Response = response2.json

an example : {"active":true, "createdBy":"2025-03-25T02:35:32.000Z", "version": 2}

now we do the check using

• match test1Response contains test2Response
• match test1Response == test2Response

the above match always fails, not sure how to validate the payloads and ignore the tag values required but same time ensuring the structure is correct.

I know there are other approach where we can go through each tag and validate but consider the payload is huge and complex.

• match
• karate
• contains

1 Answer 1

To compare two JSON responses in Karate while ignoring certain field values (like createdBy), you can remove or ignore those fields before performing the comparison. Karate provides a remove() function, which can be used to remove specific fields from your JSON objects before performing any assertions.
The solution could be:

Feature: Compare two JSON responses ignoring certain fields

  Scenario: Ignore the 'createdBy' field when comparing two responses

    # Parse the JSON responses
    * def test1Response = response1.json
    * def test2Response = response2.json

    # Remove the 'createdBy' field from both responses (you can add more fields here if needed)
    * def test1WithoutCreatedBy = test1Response.remove('createdBy')
    * def test2WithoutCreatedBy = test2Response.remove('createdBy')

    # Now match the modified JSONs (ignoring 'createdBy' field)
    * match test1WithoutCreatedBy == test2WithoutCreatedBy

    # Optionally, ensure both responses have the correct structure (e.g., checking field types)
    * match test1Response contains { active: '#boolean', version: '#number' }
    * match test2Response contains { active: '#boolean', version: '#number' }