defined
defined will check that a given JSON Path exists and has been defined
The value can be anything, or it can be empty, as long as the key exists, this function will pass.
For a more complete function use truthy.
Example ruleset configuration
my-important-rule:
message: "The thing should be defined"
given: $.some.thing
then:
- field: chicken
function: defined
- field: nugget
function: defined