Add intentional tests for dnf install rpm when higher version is installed (#81740)

* Add intentional tests for dnf install rpm when higher version is installed

* ci_complete ci_coverage

changelogs/fragments/dnf5-from-rpm-allow_downgrade.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - dnf5 - respect ``allow_downgrade`` when installing packages directly from rpm files

lib/ansible/modules/dnf5.py

@@ -357,9 +357,15 @@ def is_installed(base, spec):
 
 
 def is_newer_version_installed(base, spec):
+    # FIXME investigate whether this function can be replaced by dnf5's allow_downgrade option
+    if "/" in spec:
+        spec = spec.split("/")[-1]
+        if spec.endswith(".rpm"):
+            spec = spec[:-4]
+
     try:
         spec_nevra = next(iter(libdnf5.rpm.Nevra.parse(spec)))
-    except RuntimeError:
+    except (RuntimeError, StopIteration):
         return False
     spec_name = spec_nevra.get_name()
     v = spec_nevra.get_version()

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

@@ -101,6 +101,30 @@
         that:
             - "'results' in dnf_result"
     # ============================================================================
+    - name: Install dinginessentail-1.0-1 from a file (higher version is already installed)
+      dnf:
+        name: "{{ repodir }}/dinginessentail-1.0-1.{{ ansible_architecture }}.rpm"
+        state: present
+        disable_gpg_check: True
+      register: dnf_result
+
+    - name: Check dinginessentail with rpm
+      shell: rpm -q dinginessentail
+      register: rpm_result
+
+    - name: Verify installation
+      assert:
+        that:
+            - "not dnf_result.changed"
+            - "rpm_result.stdout.startswith('dinginessentail-1.1-1')"
+
+    - name: Verify dnf module outputs
+      assert:
+        that:
+            - "'msg' in dnf_result"
+            - "'rc' in dnf_result"
+            - "'results' in dnf_result"
+    # ============================================================================
     - name: Install dinginessentail-1.0-1 from a file (downgrade)
       dnf:
         name: "{{ repodir }}/dinginessentail-1.0-1.{{ ansible_architecture }}.rpm"