build_and_test.yml

name: Build and Test

on:
  push:
    branches:
      - main
    paths-ignore:
      - '**.md'
  pull_request:
    paths-ignore:
      - '**.md'

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        # test against relevant LTS versions of Java
        java: [ 17, 21 ]
    name: Build ktfmt on Java ${{ matrix.java }}
    steps:
    - uses: actions/checkout@v4
      with:
        submodules: recursive
    - name: Set up JDK ${{ matrix.java }}
      uses: actions/setup-java@v4
      with:
        java-version: ${{ matrix.java }}
        distribution: zulu
    # set-java-home is intentionally 'false': the main build runs on the Zulu JDK from the matrix
    # (Java 17/21), so we must not repoint JAVA_HOME at GraalVM 25. setup-graalvm still exports
    # GRAALVM_HOME, which the GraalVM Gradle plugin uses to locate the native-image toolchain for the
    # :ktfmt:nativeCompile step. This keeps the JVM build on the matrix JDK and the native build on
    # GraalVM.
    - name: Set up GraalVM
      uses: graalvm/setup-graalvm@v1
      with:
        java-version: '25.0.1'
        distribution: 'graalvm'
        github-token: ${{ secrets.GITHUB_TOKEN }}
        set-java-home: 'false'
        native-image-job-reports: 'true'
    - name: Build ktfmt
      run: ./gradlew build --no-daemon
    - name: Build Native Image
      run: ./gradlew :ktfmt:nativeCompile --stacktrace --no-daemon
    - name: Smoke test Native Image
      run: ./native_smoke_test.sh