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

- name: Test INI lookup errors
  hosts: testhost

  tasks:
    - name: Test for failure on Python 3
      when: ansible_facts.python.version_info[0] >= 3
      block:
        - name: Lookup a file with duplicate keys
          debug:
            msg: "{{ lookup('ini', 'reggae', file='duplicate.ini', section='reggae') }}"
          ignore_errors: yes
          register: duplicate

        - name: Lookup a file with keys that differ only in case
          debug:
            msg: "{{ lookup('ini', 'reggae', file='duplicate_case_check.ini', section='reggae') }}"
          ignore_errors: yes
          register: duplicate_case_sensitive

        - name: Ensure duplicate key errers were handled properly
          assert:
            that:
              - duplicate is failed
              - "'Duplicate option in' in duplicate.msg"
              - duplicate_case_sensitive is failed
              - "'Duplicate option in' in duplicate_case_sensitive.msg"

    - name: Lookup a file with a missing section
      debug:
        msg: "{{ lookup('ini', 'reggae', file='lookup.ini', section='missing') }}"
      ignore_errors: yes
      register: missing_section

    - name: Ensure error was shown for a missing section
      assert:
        that:
          - missing_section is failed
          - "'No section' in missing_section.msg"

    - name: Mix options type and push key out of order
      debug:
        msg: "{{ lookup('ini', 'file=lookup.ini', 'value1', section='value_section') }}"
      register: bad_mojo
      ignore_errors: yes

    - name: Verify bad behavior reported an error
      assert:
        that:
        - bad_mojo is failed
        - '"No key to lookup was provided as first term with in string inline option" in bad_mojo.msg'