ansible/test/integration/targets/lookup_ini/test_interpolation.yml

- hosts: testhost
  gather_facts: false
  tasks:
    - name: Test interpolation
      assert:
        that:
          - lookup('ini', 'my_dir', file='interpolation.ini') == '/Users/lumberjack'
          - lookup('ini', 'Exec', file='nointerpolation.ini', interpolation=false) == '/bin/program run %u'