add isNull predicate

[lepapareil]

An api returns a json empty field with null data type, it would be helpful if i could test it with a simple isNull predicate:

GET https://my_api.com

[Asserts]
jsonpath "$.empty" isNull

what do you think about it ?

[fabricereix]

Yes, you can add this kind of shortcuts
isNull for equals null

similarly, we thought about adding
true for equals true

[fabricereix]

Finally, we are going to add operators such as '==' for equality (#171)
Using shortcut predicates such as isNull or true won't be really useful anymorel

[Asserts]
jsonpath "$.empty" == null
jsonpath "$.status" == true