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

- name: Determine if server has tzutil.exe installed
  win_command: tzutil.exe /l
  register: tzutil
  ignore_errors: yes

- name: Only run tests if tzutil.exe is installed
  when: tzutil.rc == 0
  block:

  - name: Test in normal mode
    import_tasks: tests.yml
    vars:
      in_check_mode: no

  - name: Test in check-mode
    import_tasks: tests.yml
    vars:
      in_check_mode: yes
    check_mode: yes