Add diff cover coverage check

uktrade · Jun 24, 2024 · 06c08f4 · 06c08f4
1 parent 5445d2b
commit 06c08f4
Showing 1 changed file with 43 additions and 0 deletions.
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -50,6 +50,15 @@ jobs:
           name: Run tests
           command: pipenv run pytest --cov=. --cov-report xml --cov-config=.coveragerc
 
+      - run:
+          name: Rename coverage file
+          command: mkdir coverage-output && cp .coverage coverage-output/.coverage
+
+      - persist_to_workspace:
+          root: coverage-output
+          paths:
+            - .coverage
+
       - store_test_results:
           path: test-results
 
@@ -145,6 +154,37 @@ jobs:
           # the cache key changes whenever any of the branch name, Pipfile.lock checksum, or .pre-commit-config.yaml checksum change
           key: dependencies-{{ .Branch }}-{{ checksum "Pipfile.lock" }}-{{ checksum ".pre-commit-config.yaml" }}
 
+  check_coverage:
+    working_directory: ~/repo
+    docker:
+      - image: cimg/python:3.8.17
+    steps:
+      - checkout
+
+      - attach_workspace:
+          at: ~/repo/tmp
+
+      - run: pip install coverage diff_cover
+
+      - run: coverage xml
+
+      - run: coverage html
+
+      - store_artifacts:
+          path: htmlcov
+
+      - run: diff-cover coverage.xml --compare-branch=origin/dev --html-report coverage-report.html
+
+      - store_artifacts:
+          path: coverage-report.html
+
+      - run: zip -r coverage.zip htmlcov coverage-report.html
+
+      - store_artifacts:
+          path: coverage.zip
+
+      - run: diff-cover coverage.xml --compare-branch=origin/master --fail-under=100
+
 
 workflows:
   version: 2
@@ -153,3 +193,6 @@ workflows:
       - tests
       - tests_postgres13
       - linting
+      - check_coverage:
+          requires:
+            - tests