ci.yml

name: CI
on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:

jobs:
  test:
    runs-on: ${{ matrix.runner }}
    strategy:
      fail-fast: false
      matrix:
        flags: [""]
        arch:
          - amd64
        runner:
          - ubuntu-latest
          - macos-latest
          - windows-latest
        include:
          - arch: 386
            runner: ubuntu-latest
          - arch: amd64
            runner: ubuntu-latest
            flags: "-race"
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Install Go
        uses: actions/setup-go@v4
        with:
          go-version: "1.20"
          cache: false

      - name: Get Go environment
        id: go-env
        shell: bash
        run: |
          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV

        # Build cache key prefix, using runner OS and arch.
      - name: Compute cache prefix
        id: cache-prefix
        shell: bash
        env:
          RUNNER_PREFIX: ${{ runner.os }}-${{ runner.arch }}-go
          ARCH_PREFIX: ${{ matrix.arch != 'amd64' && format('-{0}', matrix.arch) || '' }}
          RACE_PREFIX: ${{ contains(matrix.flags, '-race') && '-race' || '' }}
        run: echo "cache_prefix=$RUNNER_PREFIX$ARCH_PREFIX$RACE_PREFIX" >> $GITHUB_ENV

      - name: Set up cache
        uses: actions/cache@v3
        with:
          path: |
            ${{ env.cache }}
            ${{ env.modcache }}
          key: ${{ env.cache_prefix }}-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ env.cache_prefix }}-

      - name: Run tests
        env:
          GOARCH: ${{ matrix.arch }}
          GOFLAGS: ${{ matrix.flags }}
        run: go test --timeout 15m ./...

      # Keep benchmark up to date.
      - name: Run benchmarks
        if: ${{ !contains(matrix.flags, '-race') }}
        env:
          GOARCH: ${{ matrix.arch }}
          GOFLAGS: ${{ matrix.flags }}
        run: go test --timeout 15m --benchtime 3x --benchmem --bench "Benchmark" --run=$^. ./...

  test-examples:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Install Go
        uses: actions/setup-go@v4
        with:
          go-version: "1.20"
          cache: false

      - name: Get Go environment
        id: go-env
        run: |
          echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
          echo "modcache=$(go env GOMODCACHE)" >> $GITHUB_ENV

      - name: Set up cache
        uses: actions/cache@v3
        with:
          path: |
            ${{ env.cache }}
            ${{ env.modcache }}
          key: test-examples-${{ runner.os }}-${{ runner.arch }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            test-examples-${{ runner.os }}-${{ runner.arch }}-go-

      - name: Run tests
        run: cd examples && go test ./...