on:
  push:
    branches:
      - master
      - ci-test
  pull_request:
    branches:
      - master

# Note that a full "go test" is quite heavy,
# as it runs many builds under the hood.
# The default -timeout=10m can be hit by the hosted runners.
#
# Also note that we don't use actions/cache for Go on purpose.
# Caching GOMODCACHE wouldn't help much, as we have few deps.
# Caching GOCACHE would do more harm than good,
# as the tests redo most of their work if the garble version changes,
# and the majority of commits or PRs will do so.

name: Test
jobs:
  test:
    strategy:
      matrix:
        go-version: [1.17.x, 1.18.x]
        os: [ubuntu-latest, macos-latest, windows-latest]
    runs-on: ${{ matrix.os }}
    steps:
    - uses: actions/setup-go@v3
      with:
        go-version: ${{ matrix.go-version }}
    - uses: actions/checkout@v3
    - name: Test
      run: go test -timeout=15m ./...
    - name: Test with -race
      # macos and windows tend to be a bit slower,
      # and it's rare that a race in garble would be OS-specific.
      if: matrix.os == 'ubuntu-latest'
      run: go test -race -timeout=20m ./...

    # Static checks from this point forward. Only run on one Go version and on
    # Linux, since it's the fastest platform, and the tools behave the same.
    - if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.18.x'
      run: diff <(echo -n) <(gofmt -d .)
    - if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.18.x'
      run: go vet ./...
    # TODO: bump to Go 1.18 once staticcheck supports it
    - if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.17.x'
      uses: dominikh/staticcheck-action@v1
      with:
        version: "2021.1.2"
        install-go: false

  # We don't care about GOARCH=386 particularly,
  # but it helps ensure we support 32-bit hosts and targets well.
  # TODO: use CGO_ENABLED=1 once we figure out how to install gcc-multilib,
  # and once gotooltest forwards the value of CGO_ENABLED to the scripts.
  test-386:
    runs-on: ubuntu-latest
    env:
      GOARCH: 386
    steps:
    - uses: actions/setup-go@v3
      with:
        go-version: 1.18.x
    - uses: actions/checkout@v3
    - name: Test
      run: go test -timeout=15m ./...

  test-gotip:
    runs-on: ubuntu-latest
    steps:
    - name: Install Go
      env:
        GO_COMMIT: e475cf2e705d4eda8647426e060898ab3f643610 # 2022-03-14
      run: |
        cd $HOME
        mkdir $HOME/gotip
        cd $HOME/gotip

        wget -O gotip.tar.gz https://go.googlesource.com/go/+archive/${GO_COMMIT}.tar.gz
        tar -xf gotip.tar.gz
        echo "devel go1.19-${GO_COMMIT}" >VERSION

        cd src
        # GOGC=off helps Go build about 20% faster, if we can spare memory.
        GOGC=off ./make.bash
        echo "GOROOT=$HOME/gotip" >>$GITHUB_ENV
        echo "$HOME/gotip/bin" >>$GITHUB_PATH
    - uses: actions/checkout@v3
    - name: Test
      run: go test -timeout=15m ./...

  script-checks:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - run: ./scripts/crlf-test.sh