community.general/tests/integration/targets/dnf_versionlock/tasks/lock_updates.yml

---
- name: Check packages with updates
  dnf:
    list: updates
  register: updates

- name: Set local facts
  set_fact:
    _packages: "{{ (updates.results | map(attribute='name') | list)[:5] }}"

- debug:
    msg:
      - "The packages to be locked and unlocked are: {{ _packages}}"

- block:
    - name: Clear locklist
      community.general.dnf_versionlock:
        state: clean
      register: clear_locklist

    - assert:
        that:
          - clear_locklist.locklist_post | length == 0

    - name: Lock packages with updates
      dnf_versionlock:
        name: "{{ _packages }}"
        state: present
      register: lock_packages

    - assert:
        that:
          - lock_packages is changed
          - (lock_packages.locklist_post | length) <= (_packages | length)

    - name: Update packages with updates while locked
      command: >-
        dnf update -y
        --setopt=obsoletes=0 {{ _packages | join(' ') }}
      register: update_locked_packages
      changed_when: '"Nothing to do" not in update_locked_packages.stdout'

    - assert:
        that:
          - update_locked_packages is not changed

    - name: Unlock packages with updates
      dnf_versionlock:
        name: "{{ _packages }}"
        state: absent
      register: unlock_packages

    - assert:
        that:
          - unlock_packages is changed
          - unlock_packages.locklist_post | length == 0

    - name: Update packages
      dnf:
        name: "{{ _packages }}"
        state: latest
      check_mode: yes
      register: update_packages

    - assert:
        that:
          - update_packages is changed

  when: updates.results | length > 0
...