---
- hosts: localhost
  name: Use of become_user without become play
  become_user: root

  tasks:
    - ansible.builtin.debug:
        msg: hello

- hosts: localhost

  tasks:
    - name: Use of become_user without become task
      ansible.builtin.command: whoami
      become_user: postgres
      changed_when: false

- hosts: localhost

  tasks:
    - name: A block with become and become_user on different tasks
      block:
        - name: Sample become
          become: true
          ansible.builtin.command: whoami
        - name: Sample become_user
          become_user: postgres
          ansible.builtin.command: whoami