ansible-role-nginx/molecule/downgrade/verify.yml

---
- name: Verify
  hosts: all
  tasks:
    - name: Check if NGINX is installed
      ansible.builtin.package:
        name: nginx
        state: present
      check_mode: true
      register: install
      failed_when: (install is changed) or (install is failed)

    - name: Check if NGINX service is running
      ansible.builtin.service:
        name: nginx
        state: started
        enabled: true
      check_mode: true
      register: service
      failed_when: (service is changed) or (service is failed)

    - name: Verify NGINX is up and running
      ansible.builtin.uri:
        url: http://localhost
        status_code: 200

    - name: Verify NGINX has been downgraded
      ansible.builtin.command: nginx -v
      args:
        chdir: "{{ ((ansible_facts['system'] | lower is not search('bsd')) | ternary('/etc/nginx', '/usr/local/sbin')) }}"
      changed_when: false
      register: version
      failed_when: version is not search('1.20.2')