dnf: add test for broken config file (#86901)

Fixes: #85681

Signed-off-by: Abhijeet Kasurde <Akasurde@redhat.com>

test/integration/targets/dnf/tasks/dnf_config.yml

@@ -0,0 +1,30 @@
+---
+- name: Create a broken dnf config file
+  copy:
+    content: '[broken_section\nname=value'
+    dest: '{{ remote_tmp_dir }}/broken.conf'
+  register: broken_conf
+
+- name: Use broken conf file
+  dnf:
+    name: bash
+    state: present
+    conf_file: '{{ broken_conf.dest }}'
+  register: dnf_bash_result
+  ignore_errors: true
+
+- name: Verify that broken conf raises an error
+  assert:
+    that:
+      - "dnf_bash_result is failed"
+      - "'Error in configuration file' in dnf_bash_result.msg"
+  when: ansible_facts['distribution'] == 'Fedora'
+
+- name: Verify that broken conf raises an error on RHEL
+  assert:
+    that:
+      - "dnf_bash_result is failed"
+      - "'Parsing file' in dnf_bash_result.msg"
+  when:
+    - ansible_facts['distribution'] == 'RedHat'
+    - ansible_facts['distribution_major_version'] in (9, 10)

test/integration/targets/dnf/tasks/main.yml

@@ -43,6 +43,7 @@
     - include_tasks: logging.yml
     - include_tasks: cacheonly.yml
     - include_tasks: multilib.yml
+    - include_tasks: dnf_config.yml
 
 # Attempting to install a different RHEL release in a tmpdir doesn't work (rhel8 beta)
 - include_tasks: dnfreleasever.yml