community.general/test/integration/targets/inventory_foreman/inspect_cache.yml

---
- hosts: localhost
  vars:
    foreman_stub_host: "{{ lookup('env', 'FOREMAN_HOST') }}"
    foreman_stub_port: "{{ lookup('env', 'FOREMAN_PORT') }}"
    foreman_stub_api_path: /api/v2
    cached_hosts_key: "http://{{ foreman_stub_host }}:{{ foreman_stub_port }}{{ foreman_stub_api_path }}/hosts"
  tasks:
    - name: verify a cache file was created
      find:
        path:
          - ./foreman_cache
      register: matching_files

    - assert:
        that:
          - matching_files.matched == 1
    - name: read the cached inventory
      set_fact:
        contents: "{{ lookup('file', matching_files.files.0.path) }}"

    - name: extract all the host names
      set_fact:
        cached_hosts: "{{ contents[cached_hosts_key] | json_query('[*].name') }}"

    - assert:
        that:
          "'{{ item }}' in cached_hosts"
      loop:
        - "v6.example-780.com"
        - "c4.j1.y5.example-487.com"