test: Simplify code coverage artifact paths

Author: m1so

.github/workflows/ci.yml

@@ -350,43 +350,21 @@ jobs:
             --junitxml=junit.xml \
             -o junit_family=legacy
 
-          # Debug: Check what coverage files exist
-          echo "=== Coverage files after pytest ==="
-          ls -la .coverage* 2>/dev/null || echo "No .coverage* files found"
-          ls -la .coverage.* 2>/dev/null || echo "No .coverage.* files found"
-          
-          # Coverage parallel mode may create .coverage.machine.pid files
-          # Check for both .coverage and .coverage.* patterns
-          if [ -f ".coverage" ]; then
-            # Single .coverage file exists (parallel mode auto-combined or not used)
-            mv .coverage .coverage.${PYTHON_VERSION}
-            echo "Renamed .coverage to .coverage.${PYTHON_VERSION}"
-            echo "coverage_generated=true" >> $GITHUB_OUTPUT
-          else
-            # Check for parallel coverage files
-            shopt -s nullglob
-            coverage_files=(.coverage.*)
-            
-            if [ ${#coverage_files[@]} -gt 0 ]; then
-              echo "Found ${#coverage_files[@]} parallel coverage files, combining..."
-              poetry run coverage combine
-              mv .coverage .coverage.${PYTHON_VERSION}
-              echo "Combined and saved as .coverage.${PYTHON_VERSION}"
-              echo "coverage_generated=true" >> $GITHUB_OUTPUT
-            else
-              echo "Error: No coverage data files found"
-              echo "coverage_generated=false" >> $GITHUB_OUTPUT
-              exit 1
-            fi
+          # Check if coverage data was generated
+          if [ ! -f ".coverage" ]; then
+            echo "Error: No coverage data file generated"
+            echo "coverage_generated=false" >> $GITHUB_OUTPUT
+            exit 1
           fi
+          
+          echo "Coverage data generated successfully"
+          echo "coverage_generated=true" >> $GITHUB_OUTPUT
 
       - name: Per-version coverage summary
         if: steps.test-unit.outputs.coverage_generated == 'true'
-        env:
-          PYTHON_VERSION: ${{ matrix.python-version }}
         run: |
-          echo "## Python ${PYTHON_VERSION} Coverage" >> $GITHUB_STEP_SUMMARY
-          poetry run coverage report --data-file=.coverage.${PYTHON_VERSION} --format=markdown >> $GITHUB_STEP_SUMMARY
+          echo "## Python ${{ matrix.python-version }} Coverage" >> $GITHUB_STEP_SUMMARY
+          poetry run coverage report --format=markdown >> $GITHUB_STEP_SUMMARY
 
       - name: Upload test results to Codecov (these are results not coverage reports)
         if: ${{ !cancelled() }}
@@ -400,7 +378,7 @@ jobs:
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: coverage-${{ matrix.python-version }}
-          path: .coverage.${{ matrix.python-version }}
+          path: .coverage
           retention-days: 1
 
   coverage-combine:
@@ -433,13 +411,9 @@ jobs:
         run: |
           set -euo pipefail
 
-          # List downloaded artifacts structure
-          echo "=== Downloaded artifacts structure ==="
-          find coverage-artifacts -type f -name ".coverage.*" || echo "No .coverage.* files found"
-          
-          # Collect all coverage files from artifact subdirectories
+          # Collect all .coverage files from artifact subdirectories
           shopt -s nullglob
-          coverage_files=(coverage-artifacts/*/.coverage.*)
+          coverage_files=(coverage-artifacts/*/.coverage)
           
           if [ ${#coverage_files[@]} -eq 0 ]; then
             echo "No coverage files to combine (tests may have failed)"
@@ -449,10 +423,12 @@ jobs:
 
           echo "Found ${#coverage_files[@]} coverage file(s) to combine"
           
-          # Copy all coverage files to a single directory for combining
+          # Rename each file to include a unique suffix for coverage combine
           mkdir -p coverage-data
+          i=0
           for file in "${coverage_files[@]}"; do
-            cp "$file" coverage-data/
+            cp "$file" "coverage-data/.coverage.$i"
+            ((i++))
           done
           
           cd coverage-data