tests.yml

name: Tests

on:
  push:
    branches: [main]
  pull_request:

jobs:
  unit:
    name: Unit Tests
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '8.4'
          extensions: swoole, redis, sockets, pcov
          tools: composer:v2

      - name: Install dependencies
        run: composer install --prefer-dist --no-progress

      - name: Run tests with coverage
        run: |
          set +e
          ./vendor/bin/phpunit --testsuite Unit --coverage-clover=coverage/unit.xml --coverage-text 2>&1 | tee coverage/unit-summary.txt
          EXIT=${PIPESTATUS[0]}
          set -e
          if [ "$EXIT" -eq 139 ] && [ -f coverage/unit.xml ]; then
            echo "Swoole exit segfault (ignored — coverage report exists)"
            exit 0
          fi
          exit $EXIT

      - name: Upload coverage
        uses: actions/upload-artifact@v4
        with:
          name: coverage-unit
          path: coverage/unit.xml

  integration:
    name: Integration Tests
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '8.4'
          extensions: swoole, redis, sockets, pcov
          tools: composer:v2

      - name: Install dependencies
        run: composer install --prefer-dist --no-progress

      - name: Run tests with coverage
        run: |
          set +e
          ./vendor/bin/phpunit --testsuite Integration --coverage-clover=coverage/integration.xml --coverage-text 2>&1 | tee coverage/integration-summary.txt
          EXIT=${PIPESTATUS[0]}
          set -e
          # Swoole can segfault on process exit after coverage generation;
          # treat it as success if the clover report was written.
          if [ "$EXIT" -eq 139 ] && [ -f coverage/integration.xml ]; then
            echo "Swoole exit segfault (ignored — coverage report exists)"
            exit 0
          fi
          exit $EXIT

      - name: Upload coverage
        uses: actions/upload-artifact@v4
        with:
          name: coverage-integration
          path: coverage/integration.xml

  coverage:
    name: Coverage Check
    runs-on: ubuntu-latest
    needs: [unit, integration]

    steps:
      - name: Download unit coverage
        uses: actions/download-artifact@v4
        with:
          name: coverage-unit
          path: coverage

      - name: Download integration coverage
        uses: actions/download-artifact@v4
        with:
          name: coverage-integration
          path: coverage

      - name: Merge and check coverage
        run: |
          merge_clover() {
            local total_stmts=0 covered_stmts=0
            for f in "$@"; do
              [ -f "$f" ] || continue
              s=$(grep -oP 'statements="\K\d+' "$f" | paste -sd+ | bc)
              c=$(grep -oP 'coveredstatements="\K\d+' "$f" | paste -sd+ | bc)
              total_stmts=$((total_stmts + s))
              covered_stmts=$((covered_stmts + c))
            done
            echo "$covered_stmts $total_stmts"
          }

          read COVERED TOTAL <<< $(merge_clover coverage/unit.xml coverage/integration.xml)
          PCT=$(echo "scale=2; $COVERED * 100 / $TOTAL" | bc)
          echo "Coverage: ${PCT}% ($COVERED / $TOTAL statements)"

      - name: Upload merged baseline
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          echo "$COVERED $TOTAL" > coverage/baseline.txt
        env:
          COVERED: ${{ env.COVERED }}
          TOTAL: ${{ env.TOTAL }}

      - name: Save baseline artifact
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        uses: actions/upload-artifact@v4
        with:
          name: coverage-baseline
          path: |
            coverage/unit.xml
            coverage/integration.xml
          retention-days: 90

      - name: Download baseline (PR only)
        if: github.event_name == 'pull_request'
        uses: dawidd6/action-download-artifact@v6
        with:
          name: coverage-baseline
          path: coverage/baseline
          branch: main
          workflow: tests.yml
          if_no_artifact_found: warn

      - name: Check coverage diff (PR only)
        if: github.event_name == 'pull_request'
        run: |
          if [ ! -f coverage/baseline/unit.xml ]; then
            echo "No baseline found, skipping diff check"
            exit 0
          fi

          merge_clover() {
            local total_stmts=0 covered_stmts=0
            for f in "$@"; do
              [ -f "$f" ] || continue
              s=$(grep -oP 'statements="\K\d+' "$f" | paste -sd+ | bc)
              c=$(grep -oP 'coveredstatements="\K\d+' "$f" | paste -sd+ | bc)
              total_stmts=$((total_stmts + s))
              covered_stmts=$((covered_stmts + c))
            done
            echo "$covered_stmts $total_stmts"
          }

          read BASE_COV BASE_TOTAL <<< $(merge_clover coverage/baseline/unit.xml coverage/baseline/integration.xml)
          BASE_PCT=$(echo "scale=2; $BASE_COV * 100 / $BASE_TOTAL" | bc)

          read PR_COV PR_TOTAL <<< $(merge_clover coverage/unit.xml coverage/integration.xml)
          PR_PCT=$(echo "scale=2; $PR_COV * 100 / $PR_TOTAL" | bc)

          DIFF=$(echo "$PR_PCT - $BASE_PCT" | bc -l)
          echo "Baseline: ${BASE_PCT}% → PR: ${PR_PCT}% (${DIFF}%)"

          if [ "$(echo "$DIFF < -1" | bc -l)" -eq 1 ]; then
            echo "::error::Coverage dropped ${DIFF}% (max allowed: -1%)"
            exit 1
          fi