add test coverage to PR comment

.github/workflows/test.yaml

@@ -61,6 +61,24 @@ jobs:
           git fetch origin develop
           git diff origin/develop --unified=0 > diff.txt
           grep '^@@' diff.txt | awk '{print $2}' > changed_lines.txt
+
+      - name: Extract untested new lines
+        id: untested_new_code
+        run: |
+          COVERAGE_FILE=coverage.txt
+          DIFF_FILE=changed_lines.txt
+          UNTTESTED_LINES=""
+          
+          # Loop through the changed lines to find untested lines
+          while IFS= read -r LINE; do
+              LINE_NUM=$(echo "$LINE" | grep -oP '\d+')
+              UNTTESTED_LINE=$(grep -E "^ *$LINE_NUM " $COVERAGE_FILE | grep 'missed')
+              if [ -n "$UNTTESTED_LINE" ]; then
+                  UNTTESTED_LINES="$UNTTESTED_LINES\n$UNTTESTED_LINE"
+              fi
+          done < $DIFF_FILE
+          
+          echo "UNTTESTED_LINES=$UNTTESTED_LINES" >> $GITHUB_ENV
       - name: Post coverage comment on PR
         uses: actions/github-script@v6
         with: