ansible-sshd/tests/tests_hostkeys_missing.yml

---
- hosts: all
  tasks:
  - name: Configure sshd with missing host keys and prevent their creation
    block:
      - name: Configure missing hostkey
        include_role:
          name: ansible-sshd
        vars:
          sshd_verify_hostkeys: []
          sshd:
            HostKey:
              - /tmp/missing_ssh_host_rsa_key
        register: role_result

      - name: unreachable task
        fail:
          msg: UNREACH

    rescue:
      - name: Check that we failed in the role
        assert:
          that:
            - ansible_failed_result.msg != 'UNREACH'
            - not role_result.changed
          msg: "Role has not failed when it should have"

      - name: Make sure service is still running
        service:
          name: sshd
          state: started
        register: result
        failed_when: result.changed