Streamdata: Unique generated data

Hi all, generating a property test and want to make sure that map_a and map_b are not equal, if they are then just pass :ok, and if not then assert.

Here is the code :

property "when a & b are arbitrary small json objects; patch(a, diff(a,b)) == b" do
    primitive = one_of([string(:printable), integer()])

    json_fragment_gen =
      tree(primitive, fn child_gen ->
        StreamData.one_of([
          # A JSON array
          list_of(child_gen),
          # A JSON object. Only supports string keys.
          map_of(string(:printable), child_gen)
        ])
      end)

    # Only valid top-level JSON are objects and arrays
    json_gen = json_fragment_gen |> filter(fn val -> is_map(val) end, 100)

    check all(
            map_a <- json_gen,
            map_b <- json_gen,

            max_runs: 100,
            initial_size: 1,
            max_generation_size: 50
          ) do

        
        assert map_b == js_patch(map_a, JsonDiffEx.diff(map_a, map_b))

So instead of checking before the assertion, is there a way to generate two unique maps that can never be equal to each other or if they are equal to each to just ignore it or pass :ok.

property "when a & b are arbitrary small json objects; patch(a, diff(a,b)) == b" do
    primitive = one_of([string(:printable), integer()])

    json_fragment_gen =
      tree(primitive, fn child_gen ->
        StreamData.one_of([
          # A JSON array
          list_of(child_gen),
          # A JSON object. Only supports string keys.
          map_of(string(:printable), child_gen)
        ])
      end)

    # Only valid top-level JSON are objects and arrays
    json_gen = json_fragment_gen |> filter(fn val -> is_map(val) end, 100)

    check all(
            map_a <- json_gen,
            map_b <- json_gen,

            max_runs: 100,
            initial_size: 1,
            max_generation_size: 50
          ) do

          if map_a == map_b do
            :ok
          else
            assert map_b == js_patch(map_a, JsonDiffEx.diff(map_a, map_b))

Any help would be appreciated, thanks in advance.