make-coverage-html.yml

# yamllint disable rule:line-length
# This workflow runs make coverage/html and verifies that the coverage HTML report is generated.
# yamllint enable rule:line-length

---
name: Make Coverage HTML

env:
  HTML_REPORT_DIR: "algorithm-exercises-java/build/reports/jacoco/test/html"
on: # yamllint disable-line rule:truthy
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]
  workflow_dispatch:

jobs:
  make-coverage-html:
    name: "Run make coverage/html and verify coverage HTML"
    runs-on: ubuntu-24.04

    steps:
      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
      - name: Set up JDK
        uses: actions/setup-java@v5
        with:
          java-version: 24
          # Alternative distribution options are available
          distribution: temurin
      - name: Validate Gradle wrapper
        uses: gradle/actions/wrapper-validation@v6

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v6

      - name: Tool test
        run: |
          echo "Java version: ${{ matrix.java }}"
          java -version
          echo "OS: ${{ matrix.os }}"
          echo "Gradle version:"
          ./gradlew --version
          make --version

      - name: Run coverage HTML target
        run: make coverage/html
      - name: Verify coverage HTML artifact
        shell: bash
        run: |
          if [ ! -f $HTML_REPORT_DIR/index.html ]; then
            echo "Coverage HTML file not found: $HTML_REPORT_DIR/index.html"
            exit 1
          fi
          if [ ! -s $HTML_REPORT_DIR/index.html ]; then
            echo "Coverage HTML file is empty: $HTML_REPORT_DIR/index.html"
            exit 1
          fi
      - name: Upload coverage HTML artifact
        uses: actions/upload-artifact@v7
        with:
          name: coverage-report-html
          path: ${{ env.HTML_REPORT_DIR }}