---
cases:
  - note: "negation/neg: set contains undefined"
    query: data.generated.p = x
    modules:
      - |
        package generated

        p if {
        	not data.generated.q.v2
        }

        q contains x if {
        	data.b[x] = v
        }
    data:
      b:
        v1: hello
        v2: goodbye
    want_result: []
