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

- name: find bash
  shell: command -v bash
  register: bash
  ignore_errors: true

- meta: end_host
  when: bash is failed

- name: get available locales
  command: locale -a
  register: locale_a
  ignore_errors: true

- set_fact:
    non_utf8: '{{ locale_a.stdout_lines | select("contains", ".") | reject("search", "(?i)(\.UTF-?8$)") | default([None], true) | first }}'
    has_cutf8: '{{ locale_a.stdout_lines | select("search", "(?i)C.UTF-?8") != [] }}'

- name: Test successful encodings
  shell: '{{ item }} ansible --version'
  args:
    executable: '{{ bash.stdout_lines|first }}'
  loop:
    - LC_ALL={{ utf8 }}
    - LC_ALL={{ cutf8 }}
    - LC_ALL= LC_CTYPE={{ utf8 }}
    - LC_ALL= LC_CTYPE={{ cutf8 }}
  when: cutf8 not in item or (cutf8 in item and has_cutf8)

- name: test locales error
  shell: LC_ALL=ham_sandwich LC_CTYPE={{ utf8 }} ansible --version
  args:
    executable: '{{ bash.stdout_lines|first }}'
  ignore_errors: true
  register: locales_error

- assert:
    that:
      - locales_error is failed
      - >-
        'ERROR: Ansible could not initialize the preferred locale' in locales_error.stderr

- meta: end_host
  when: non_utf8 is falsy

- name: Test unsuccessful encodings
  shell: '{{ item }} ansible --version'
  args:
    executable: '{{ bash.stdout_lines|first }}'
  loop:
    - LC_ALL={{ non_utf8 }}
    - LC_ALL= LC_CTYPE={{ non_utf8 }}
  ignore_errors: true
  register: result

- assert:
    that:
      - result is failed
      - result.results | select('failed') | length == 2
      - >-
        'ERROR: Ansible requires the locale encoding to be UTF-8' in result.results[0].stderr
      - >-
        'ERROR: Ansible requires the locale encoding to be UTF-8' in result.results[1].stderr