---
- name: Setting the fact for 'test' to 'test value'
  set_fact:
    test: "test value"
  when: "inventory_hostname == groups.all.0"

- name: EXPECTED FAILURE echo jinja eval of a var that should not exist
  shell: "echo {{ test }}"

- debug:
    msg: "any_errors_fatal_this_should_never_be_reached"