ansible/test/integration/targets/module_utils/module_utils_common_dict_transformation.yml

- hosts: testhost
  gather_facts: no
  tasks:
    - test_recursive_diff:
        a:
          foo:
            bar:
              - baz:
                  qux: ham_sandwich
        b:
          foo:
            bar:
              - baz:
                  qux: turkey_sandwich
      register: recursive_diff_diff

    - test_recursive_diff:
        a:
          foo:
            bar:
              - baz:
                  qux: ham_sandwich
        b:
          foo:
            bar:
              - baz:
                  qux: ham_sandwich
      register: recursive_diff_same

    - assert:
        that:
          - recursive_diff_diff.the_diff is not none
          - recursive_diff_diff.the_diff|length == 2
          - recursive_diff_same.the_diff is none