community.general/tests/integration/targets/lvg/tasks/test_indempotency.yml

- name: Create volume group on disk device
  lvg:
    vg: testvg
    pvs: "{{ loop_device1.stdout }}"

- name: Create the volume group again to verify idempotence
  lvg:
    vg: testvg
    pvs: "{{ loop_device1.stdout }}"
  register: repeat_vg_create

- name: Do all assertions to verify expected results
  assert:
    that:
      - repeat_vg_create is not changed