chore: add coverage report

.github/workflows/tests.yml

@@ -20,7 +20,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8', '3.9', '3.10', '3.11' ]
+        #python-version: [ '3.8', '3.9', '3.10', '3.11' ]
+        python-version: [ '3.10', '3.11']
     env:
       PYTEST_ADDOPTS: >-
         --log-dir=/tmp/ci-logs
@@ -36,12 +37,52 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - run: make install version
-    - run: make unit-tests
-    - run: make integration-tests PYTEST_ARGS="--random-order"
+    - run: make unit-tests-coverage
+      env:
+        COVERAGE_FILE: ".coverage.${{ matrix.python_version }}"
+    - run: make integration-tests-coverage PYTEST_ARGS="--random-order"
+      env:
+        COVERAGE_FILE: ".coverage.${{ matrix.python_version }}"
 
     - name: Archive logs
       uses: actions/upload-artifact@v4
       if: ${{ always() }}
       with:
         name: karapace-integration-test-logs-${{ matrix.python-version }}
         path: /tmp/ci-logs
+    - name: Archive coverage file
+      uses: actions/upload-artifact@v4
+      with:
+        name: coverage-${{ matrix.python_version }}
+        path: .coverage.${{ matrix.python_version }}
+
+  coverage:
+    name: Coverage report
+    runs-on: ubuntu-latest
+    needs: tests
+    permissions:
+      pull-requests: write
+      contents: write
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Download coverage
+      id: download_coverage
+      uses: actions/download-artifact@v4
+      with:
+        pattern: coverate-*
+        merge-multiple: true
+
+    - name: Post coverage comment
+      id: post_coverage_comment
+      uses: py-cov-action/python-coverage-comment-action@v3
+      with:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        MERGE_COVERAGE_FILES: true
+
+    - name: Store PR coment to be posted
+      uses: actions/upload-artifact@v4
+      if: steps.post_coverage_comment.outputs.COMMENT_FILE_WRITTEN == 'true'
+      with:
+        name: python-coverage-comment-action
+        path: python-coverage-comment-action.txt

GNUmakefile

@@ -69,6 +69,14 @@ integration-tests: karapace/version.py venv/.deps
 	$(PYTHON) -m pytest -s -vvv $(PYTEST_ARGS) tests/integration/
 	rm -fr runtime/*
 
+.PHONY: unit-tests-coverage
+unit-tests-coverage:
+	$(MAKE) PYTEST_ARGS="--cov=karapace --cov-append" unit-tests
+
+.PHONY: integration-tests-coverage
+integration-tests-coverage:
+	$(MAKE) PYTEST_ARGS="--cov=karapace --cov-append" integration-tests
+
 .PHONY: clean
 clean:
 	rm -fr ./kafka_* ./*.egg-info/ ./dist/ ./karapace/version.py