community.general/tests/integration/targets/module_helper/tasks/mstate.yml

- name: test mstate 1
  mstate:
    a: 80
    b: banana
    c: cashew
    state: nop
  register: state1

- name: assert state1
  assert:
    that:
      - state1.a == 80
      - state1.b == "banana"
      - state1.c == "cashew"
      - state1.result == "abc"
      - state1 is not changed

- name: test mstate 2
  mstate:
    a: 80
    b: banana
    c: cashew
  register: state2

- name: assert state2
  assert:
    that:
      - state2.a == 80
      - state2.b == "banana"
      - state2.c == "cashew"
      - state2.result == "80bananacashew"
      - state2 is changed

- name: test mstate 3
  mstate:
    a: 3
    b: banana
    state: b_x_a
  register: state3

- name: assert state3
  assert:
    that:
      - state3.a == 3
      - state3.b == "banana"
      - state3.result == "bananabananabanana"
      - state3 is changed

- name: test mstate 4
  mstate:
    a: 4
    c: cashew
    state: c_x_a
  register: state4

- name: assert state4
  assert:
    that:
      - state4.a == 4
      - state4.c == "cashew"
      - state4.result == "cashewcashewcashewcashew"
      - state4 is changed

- name: test mstate 5
  mstate:
    a: 5
    b: foo
    c: bar
    state: both_x_a
  register: state5

- name: assert state5
  assert:
    that:
      - state5.a == 5
      - state5.b == "foo"
      - state5.c == "bar"
      - state5.result == "foobarfoobarfoobarfoobarfoobar"
      - state5 is changed