- name: Test that we can give it a single value and receive a single value
  set_fact:
    var_host: '{{ lookup("vars", "ansible_host") }}'

- assert:
    that:
      - 'var_host == ansible_host'

- name: Test that we can give a list of values to var and receive a list of values back
  set_fact:
    var_host_info: '{{ query("vars", "ansible_host", "ansible_connection") }}'

- assert:
    that:
      - 'var_host_info[0] == ansible_host'
      - 'var_host_info[1] == ansible_connection'