community.docker/tests/integration/targets/docker_network/tasks/tests/overlay.yml

---
- name: Registering network name
  set_fact:
    nname_1: "{{ name_prefix ~ '-network-1' }}"
- name: Registering network name
  set_fact:
    dnetworks: "{{ dnetworks + [nname_1] }}"

####################################################################
## overlay #########################################################
####################################################################

- block:
  # Overlay networks require swarm initialization before they'll work
  - name: swarm
    docker_swarm:
      state: present
      advertise_addr: "{{ ansible_default_ipv4.address | default('127.0.0.1') }}"

  - name: overlay
    docker_network:
      name: "{{ nname_1 }}"
      driver: overlay
      driver_options:
        com.docker.network.driver.overlay.vxlanid_list: "257"
    register: overlay_1

  - name: overlay (idempotency)
    docker_network:
      name: "{{ nname_1 }}"
      driver: overlay
      driver_options:
        com.docker.network.driver.overlay.vxlanid_list: "257"
    register: overlay_2

  - name: overlay (change)
    docker_network:
      name: "{{ nname_1 }}"
      driver: bridge
    register: overlay_3

  - name: cleanup network
    docker_network:
      name: "{{ nname_1 }}"
      state: absent
      force: yes

  - assert:
      that:
      - overlay_1 is changed
      - overlay_2 is not changed
      - overlay_3 is changed

  always:
  - name: cleanup swarm
    docker_swarm:
      state: absent
      force: yes

  # Requirements for docker_swarm
  when: docker_py_version is version('2.6.0', '>=') and docker_api_version is version('1.25', '>=')