---
name: Fuzzing

on: [push, pull_request]

jobs:
  test:
    name: Fuzz
    runs-on: ubuntu-latest
    # We want to run on external PRs, but not on our own internal PRs as they'll be run
    # by the push to the branch.
    if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository

    env:
      GOFLAGS: -trimpath

    steps:
    - uses: actions/checkout@v3

    - name: Setup Go
      uses: actions/setup-go@v3
      with:
        go-version: 1.19.x

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

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

    - name: Run any fuzzing tests
      run: go test -v -run=^Fuzz -test.fuzztime=5m ./...