test.yml

name: Test

on:
  push:
    branches: [main]
  pull_request:
  # Allow manual runs from the Actions tab.
  workflow_dispatch:

jobs:
  test:
    runs-on: ubuntu-latest
    permissions:
      contents: read

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

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          # Track the version in go.mod so this never drifts from the module.
          go-version-file: go.mod

      - name: Check formatting
        # gofmt -l lists misformatted files and exits 0 either way, so fail
        # explicitly when the list is non-empty.
        run: |
          unformatted=$(gofmt -l .)
          if [ -n "$unformatted" ]; then
            echo "These files need gofmt:"
            echo "$unformatted"
            exit 1
          fi

      - name: Build
        run: go build ./...

      - name: Vet
        run: go vet ./...

      - name: Test
        run: go test -race ./...