ansible/test/integration/targets/template/custom_tasks/tasks/main.yml

---
- set_fact:
    output_dir: "{{ lookup('env', 'OUTPUT_DIR') }}"

- template:
    src: test
    dest: "{{ output_dir }}/templated_test"
  register: custom_template_result

- debug:
    msg: "{{ custom_template_result }}"

- assert:
    that:
      - custom_template_result.changed