ansible/test/integration/targets/docker_image_info/tasks/main.yml

---
- block:
  - name: Make sure image is not there
    docker_image:
      name: alpine:3.7
      state: absent

  - name: Inspect a non-available image
    docker_image_info:
      name: alpine:3.7
    register: result

  - assert:
      that:
      - "result.images|length == 0"

  - name: Make sure images are there
    docker_image:
      name: "{{ item }}"
      source: pull
      state: present
    loop:
    - "hello-world:latest"
    - "alpine:3.8"

  - name: Inspect an available image
    docker_image_info:
      name: hello-world:latest
    register: result

  - assert:
      that:
      - "result.images|length == 1"
      - "'hello-world:latest' in result.images[0].RepoTags"

  - name: Inspect multiple images
    docker_image_info:
      name:
      - "hello-world:latest"
      - "alpine:3.8"
    register: result

  - debug: var=result

  - assert:
      that:
      - "result.images|length == 2"
      - "'hello-world:latest' in result.images[0].RepoTags"
      - "'alpine:3.8' in result.images[1].RepoTags"

  when: docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.20', '>=')

- fail: msg="Too old docker / docker-py version to run docker_image_info tests!"
  when: not(docker_py_version is version('1.8.0', '>=') and docker_api_version is version('1.20', '>=')) and (ansible_distribution != 'CentOS' or ansible_distribution_major_version|int > 6)