community.general/test/integration/targets/docker_network/tasks/tests/basic.yml

---
- name: Registering container and network names
  set_fact:
    cname_1: "{{ name_prefix ~ '-container-1' }}"
    cname_2: "{{ name_prefix ~ '-container-2' }}"
    cname_3: "{{ name_prefix ~ '-container-3' }}"
    nname_1: "{{ name_prefix ~ '-network-1' }}"
    nname_2: "{{ name_prefix ~ '-network-2' }}"
- name: Registering container and network names
  set_fact:
    cnames: "{{ cnames }} + [cname_1, cname_2, cname_3]"
    dnetworks: "{{ dnetworks }} + [nname_1, nname_2]"

- name: Create containers
  docker_container:
    name: "{{ container_name }}"
    image: alpine:3.8
    command: /bin/sleep 10m
    state: started
  loop:
  - "{{ cname_1 }}"
  - "{{ cname_2 }}"
  - "{{ cname_3 }}"
  loop_control:
    loop_var: container_name

####################################################################

- name: Create network
  docker_network:
    name: "{{ nname_1 }}"
    state: present
  register: networks_1

- name: Connect network to containers 1
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_1 }}"
  register: networks_2

- name: Connect network to containers 1 (idempotency)
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_1 }}"
  register: networks_2_idem

- name: Connect network to containers 1 and 2
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_1 }}"
    - "{{ cname_2 }}"
  register: networks_3

- name: Connect network to containers 1 and 2 (idempotency)
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_1 }}"
    - "{{ cname_2 }}"
  register: networks_3_idem

- name: Connect network to container 3
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_3 }}"
    appends: yes
  register: networks_4

- name: Connect network to container 3 (idempotency)
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_3 }}"
    appends: yes
  register: networks_4_idem

- name: Disconnect network from container 1
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_2 }}"
    - "{{ cname_3 }}"
  register: networks_5

- name: Disconnect network from container 1 (idempotency)
  docker_network:
    name: "{{ nname_1 }}"
    state: present
    connected:
    - "{{ cname_2 }}"
    - "{{ cname_3 }}"
  register: networks_5_idem

- name: Cleanup
  docker_network:
    name: "{{ nname_1 }}"
    state: absent

- assert:
    that:
    - networks_1 is changed
    - networks_2 is changed
    - networks_2_idem is not changed
    - networks_3 is changed
    - networks_3_idem is not changed
    - networks_4 is changed
    - networks_4_idem is not changed
    - networks_5 is changed
    - networks_5_idem is not changed

####################################################################

- name: Delete containers
  docker_container:
    name: "{{ container_name }}"
    state: absent
    force_kill: yes
  loop:
  - "{{ cname_1 }}"
  - "{{ cname_2 }}"
  - "{{ cname_3 }}"
  loop_control:
    loop_var: container_name