ansible/test/integration/targets/task_ordering/tasks/main.yml

- set_fact:
    temppath: "{{ remote_tmp_dir }}/output.txt"

- include: taskorder-include.yml
  with_items:
  - 1
  - 2
  - 3

- slurp:
    src: "{{ temppath }}"
  register: tempout

- assert:
    that: tempout.content | b64decode == "one.1.two.1.three.1.four.1.one.2.two.2.three.2.four.2.one.3.two.3.three.3.four.3."