ansible/test/integration/targets/display-newline/tasks/main.yml

- name: Run a command which generates a warning with NL, CR and CRNL
  command: ansible -m noisy localhost
  register: result
  environment:
    ANSIBLE_FORCE_COLOR: 0
    ANSIBLE_LIBRARY: "{{ role_path }}/library"

- name: Verify NL and CR are preserved, but CRNL is converted to NL
  assert:
    that: result.stderr is contains 'Hello\nNew\rAnsible\nWorld'