ansible/test/integration/targets/callback_default/test_dryrun.yml

---
- name: A common play
  hosts: testhost
  gather_facts: no
  tasks:
  - debug: 
      msg: 'ansible_check_mode: {{ansible_check_mode}}'

  - name: Command
    command: ls -l

  - name: "Command with check_mode: false"
    command: ls -l
    check_mode: false

  - name: "Command with check_mode: true"
    command: ls -l
    check_mode: true


- name: "Play with check_mode: true (runs always in check_mode)"
  hosts: testhost
  gather_facts: no
  check_mode: true
  tasks:
  - debug: 
      msg: 'ansible_check_mode: {{ansible_check_mode}}'

  - name: Command
    command: ls -l
 
  - name: "Command with check_mode: false"
    command: ls -l
    check_mode: false

  - name: "Command with check_mode: true"
    command: ls -l
    check_mode: true


- name: "Play with check_mode: false (runs always in wet mode)"
  hosts: testhost
  gather_facts: no
  check_mode: false
  tasks:
  - debug: 
      msg: 'ansible_check_mode: {{ansible_check_mode}}'

  - name: Command
    command: ls -l

  - name: "Command with check_mode: false"
    command: ls -l
    check_mode: false

  - name: "Command with check_mode: true"
    command: ls -l
    check_mode: true


- name: "Play with a block with check_mode: true"
  hosts: testhost
  gather_facts: no
  tasks:
  - block:
    - name: Command
      command: ls -l

    - name: "Command with check_mode: false"
      command: ls -l
      check_mode: false

    - name: "Command with check_mode: true"
      command: ls -l
      check_mode: true
    check_mode: true

- name: "Play with a block with check_mode: false"
  hosts: testhost
  gather_facts: no
  tasks:
  - block:
    - name: Command
      command: ls -l

    - name: "Command with check_mode: false"
      command: ls -l
      check_mode: false

    - name: "Command with check_mode: true"
      command: ls -l
      check_mode: true
    check_mode: false