Python Coverage Reporting in Gitlab CI

In a Django project at Jet-Stream, I saw a Renovate merge request for the coverage library. My initial thought was “huh? I don’t think we’re using this,” but a second later I saw the opportunity: update the gitlab-ci.yml definition to enable coverage reporting in Gitlab merge requests.

 django-tests:
   script:
-    - ./manage.py test
+    - coverage run ./manage.py test
+    - coverage xml -o coverage.xml
+  artifacts:
+    reports:
+      coverage_report:
+        coverage_format: cobertura
+        path: coverage.xml

The coverage_report keyword has no mention on the gitlab-ci.yml documentation page, but there is a guide for use with pytest that mentioned the coverage_report keyword and its use.