Ansible Unit Test Molecule Invert Failure into Success

 This is the use case where you are expecting a task to fail during the unit test.  There are cases where you would want to test for this.  Use your imagination. 

Anyways add this to the end of your molecule/*/converge.yml file:

---

- name: Converge

  hosts: all

  vars:

    ... omitted ...

    task_that_should_fail: 'Check if web server returns 200 on localhost'

  tasks:

    ... omitted ...

    - name: Role Should Fail In This Test

      block:

        - name: Include my_role

          ansible.builtin.include_role:

            name: "my_role"

          ignore_errors: true

        - name: Passed is Fail

          fail:

            msg: "Role my_role unexpectedly successed!"

      rescue:

        - name: Failed is Pass

          debug:

            msg: "Role my_role failed when it should have!"

          when:

            - ansible_failed_task.name == task_that_should_fail

        - name: Passed is Fail

          fail:

            msg: "Role my_role unexpectedly succeed!"

          when:

            - not ansible_failed_task.name == task_that_should_fail