Test Filters : json query

[nikhilp79]

I am validating an api response that has a format as shown below:

{
	"results": [
		{
			"id": 3,
			"name": "a"
		},
		{
			"id": 4,
			"name": "d"
		},
		{
			"id": 3,
			"name": "Z",
			"size": {
				"length": 5,
				"width": 4
			}
		}
	]
}

"size" object node is not present on all array elements. I am writing a test (using Built-in Filters) to give me the "length" of first element where "size" object is present. I was hoping this would work : " json.results | filter(size > 0) | at(0).size.length" "equal" 5 . But is failing. Any idea why? It looks like "json.results | filter(size > 0)| at(0)" is giving me expected results. Or is there a better approach to test this response?

[rangav]

Hi @nikhilp79 You dont need built in filter for this.

Use this expression in tests left input for json query - json.results[size>0][0].size.length

Docs here
https://github.com/rangav/thunder-client-support/blob/master/docs/testing.md#test-arrays