ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:

permissions:
  contents: read

# cactus uses Go's built-in crypto/mldsa and declares `go 1.27` in
# go.mod, so it must be built with a Go 1.27 toolchain. 1.27 has not had
# a final release yet, so CI pins the newest release candidate; bump
# GO_VERSION as later RCs appear and set it to '1.27' once 1.27.0 ships.
# GOTOOLCHAIN=local keeps the go command from downloading a different
# toolchain behind our backs -- the RC satisfies the go.mod requirement
# on its own.
env:
  GO_VERSION: '1.27.0-rc.2'
  GOTOOLCHAIN: local

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7

      # setup-go caches the module and build caches itself, keyed on
      # go.sum, so no separate actions/cache step is needed.
      - name: Install Go
        uses: actions/setup-go@v7
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Toolchain version
        run: go version

      # The Makefile defaults to gotip for local development; CI has a
      # real 1.27 toolchain on PATH as `go`.
      - name: Vet
        run: make GO=go vet

      - name: Build
        run: make GO=go build

      - name: Test (race)
        run: go test -race -count=1 ./...

      - name: Integration tests (race)
        run: make GO=go integration

      # The stress test is build-tagged, so the steps above never compile
      # it. Vet it here so a break is caught on the pull request rather
      # than by the nightly Stress workflow. Running it is that
      # workflow's job.
      - name: Vet stress-tagged tests
        run: go vet -tags=stress ./integration/...

  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Install Go
        uses: actions/setup-go@v6
        with:
          go-version: ${{ env.GO_VERSION }}

      # golangci-lint release binaries are built with the latest released
      # Go and cannot type-check a `go 1.27` module, so build it from
      # source with the toolchain installed above instead of using
      # golangci/golangci-lint-action. setup-go's cache keeps this fast
      # after the first run. Keep the pinned version in sync with the
      # Makefile comment. Formatting (gofmt + goimports) is checked here
      # too, via the formatters enabled in .golangci.yml.
      - name: Install golangci-lint
        run: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.12.2

      - name: Lint
        run: make GO=go lint