re-added the code to generate code coverage for recent files, comment…

…ed out, in case someone can fix it

.github/workflows/tests.yml

@@ -111,3 +111,12 @@ jobs:
     - name: emit hint on where to update minimum test coverage
       run: echo "to update minimum test coverage requirements, edit coveralls.json"
 
+    # not working correctly in GitHub actions (thus commented out for now), seems to not be getting a deep copy of all commits
+    # - name: generate list of files changed in the last month 
+    #   run: git diff ${{ github.event.pull_request.head.sha }} '@{last month}' --name-only | tee ./cover/files_changed_in_last_month.txt
+
+    # - name: echo coverage header to list-of-files-changed file to assist in reporting # Requires above step to be fixed
+    #   run: echo "LINES RELEVANT   MISSED" | tee -a ./cover/files_changed_in_last_month.txt
+
+    # - name: use grep to create test coverage report only on recently changed files, sorted by coverage percent # Requires above step to be fixed
+    #   run: grep -F -f ./cover/files_changed_in_last_month.txt ./cover/test_coverage_by_file.txt | grep -A999 "LINES RELEVANT   MISSED" | sort -g