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jsonjmeterassertionweb-api-testingjsr223

How to perform JSR223 assertion test on a JSON array which is the value of a key in JMeter?

I want to perform an assertion test on a JSON array represented as follows in JMeter:

{
  "item": [
    {
      "id": "cx34ty1",
      "name": "xyzitem",
      "isSerialNoRequired": false,
      "itemProps": {
        "type": "readonly",
        "count": 10
      }
    }
  ]
}

I know that it is possible to assert for the presence of a key using JSR223 assertion, for eg. "item" in this case using:

if (!jsonResponse.keySet().containsAll(["item"])) {
          failureMessage += "The json config element has wrong structure.\n\n";

What should I do if I want to assert for the presence of a key within the array, or eg. "id" or "itemProps"? Also, given that JSON Assertion is resource intensive, I don't want to use it since I also want to check for multiple keys.

Solution

  • You can use the same approach, like:

    def jsonResponse = new groovy.json.JsonSlurper().parse(prev.getResponseData())

if (!jsonResponse.keySet().contains('item')) {
    AssertionResult.setFailure(true)
    AssertionResult.setFailureMessage('"item" element was not found')
}

if (!jsonResponse.item.get(0).keySet().contains('id') || !jsonResponse.item.get(0).keySet().contains('itemProps')) {
    AssertionResult.setFailure(true)
    AssertionResult.setFailureMessage('"id" or "itemProps" element was not found')
}

    However you could come up with a better solution, for example use JSON Schema Validator library, if you download the .jar and put it to JMeter Classpath you will be able to test JSON response against pre-defined JSON Schema and in case of mismatch (missing mandatory key or wrong data type of value) you will be notified.

    More information: