Filter coverage to only include project source files, exclude dependencies

Co-authored-by: vsanthanam <3914230+vsanthanam@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -148,23 +148,35 @@ jobs:
           COVERAGE_JSON=$(swift test --show-codecov-path)
           echo "Coverage report location: $COVERAGE_JSON"
           
-          # Extract coverage statistics
-          LINES_PERCENT=$(jq -r '.data[0].totals.lines.percent' "$COVERAGE_JSON")
-          LINES_COVERED=$(jq -r '.data[0].totals.lines.covered' "$COVERAGE_JSON")
-          LINES_TOTAL=$(jq -r '.data[0].totals.lines.count' "$COVERAGE_JSON")
+          # Filter coverage to only include project source files (exclude dependencies)
+          # Count only files in the /Sources/ directory to exclude Swift package dependencies
+          LINES_TOTAL=$(jq '[.data[0].files[] | select(.filename | contains("/Sources/")) | .summary.lines.count] | add // 0' "$COVERAGE_JSON")
+          LINES_COVERED=$(jq '[.data[0].files[] | select(.filename | contains("/Sources/")) | .summary.lines.covered] | add // 0' "$COVERAGE_JSON")
           
-          FUNCTIONS_PERCENT=$(jq -r '.data[0].totals.functions.percent' "$COVERAGE_JSON")
-          FUNCTIONS_COVERED=$(jq -r '.data[0].totals.functions.covered' "$COVERAGE_JSON")
-          FUNCTIONS_TOTAL=$(jq -r '.data[0].totals.functions.count' "$COVERAGE_JSON")
+          FUNCTIONS_TOTAL=$(jq '[.data[0].files[] | select(.filename | contains("/Sources/")) | .summary.functions.count] | add // 0' "$COVERAGE_JSON")
+          FUNCTIONS_COVERED=$(jq '[.data[0].files[] | select(.filename | contains("/Sources/")) | .summary.functions.covered] | add // 0' "$COVERAGE_JSON")
           
-          REGIONS_PERCENT=$(jq -r '.data[0].totals.regions.percent' "$COVERAGE_JSON")
-          REGIONS_COVERED=$(jq -r '.data[0].totals.regions.covered' "$COVERAGE_JSON")
-          REGIONS_TOTAL=$(jq -r '.data[0].totals.regions.count' "$COVERAGE_JSON")
+          REGIONS_TOTAL=$(jq '[.data[0].files[] | select(.filename | contains("/Sources/")) | .summary.regions.count] | add // 0' "$COVERAGE_JSON")
+          REGIONS_COVERED=$(jq '[.data[0].files[] | select(.filename | contains("/Sources/")) | .summary.regions.covered] | add // 0' "$COVERAGE_JSON")
           
-          # Round percentages to 2 decimal places
-          LINES_PERCENT=$(printf "%.2f" "$LINES_PERCENT")
-          FUNCTIONS_PERCENT=$(printf "%.2f" "$FUNCTIONS_PERCENT")
-          REGIONS_PERCENT=$(printf "%.2f" "$REGIONS_PERCENT")
+          # Calculate percentages
+          if [ "$LINES_TOTAL" -gt 0 ]; then
+            LINES_PERCENT=$(echo "scale=2; ($LINES_COVERED * 100) / $LINES_TOTAL" | bc)
+          else
+            LINES_PERCENT="0.00"
+          fi
+          
+          if [ "$FUNCTIONS_TOTAL" -gt 0 ]; then
+            FUNCTIONS_PERCENT=$(echo "scale=2; ($FUNCTIONS_COVERED * 100) / $FUNCTIONS_TOTAL" | bc)
+          else
+            FUNCTIONS_PERCENT="0.00"
+          fi
+          
+          if [ "$REGIONS_TOTAL" -gt 0 ]; then
+            REGIONS_PERCENT=$(echo "scale=2; ($REGIONS_COVERED * 100) / $REGIONS_TOTAL" | bc)
+          else
+            REGIONS_PERCENT="0.00"
+          fi
           
           # Create markdown summary
           cat >> $GITHUB_STEP_SUMMARY << EOF

COVERAGE.md

@@ -84,6 +84,8 @@ Code coverage is enabled in `.github/workflows/ci.yml` for macOS test jobs:
   run: swift test --enable-code-coverage
 ```
 
+The coverage report filters results to only include project source files (those in `/Sources/` directory), excluding Swift package dependencies. This ensures accurate coverage metrics for the project's own code.
+
 ### Codecov Configuration
 
 The Codecov token is stored as a repository secret (`CODECOV_TOKEN`). For public repositories, this token is optional but recommended for better reliability and rate limits.