Jarvy/.github/workflows/fuzz.yml at main · bearbinary/Jarvy · GitHub

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name: Fuzz Testing

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]
  schedule:
    # Run weekly fuzz testing (Sunday at 2 AM UTC)
    - cron: '0 2 * * 0'
  workflow_dispatch:
    inputs:
      fuzz_duration:
        description: 'Fuzz duration in seconds'
        required: false
        default: '60'

env:
  CARGO_TERM_COLOR: always

jobs:
  fuzz-pr:
    name: Quick Fuzz (PR)
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request' || github.event_name == 'push'
    strategy:
      fail-fast: false
      matrix:
        target:
          - fuzz_config_parser
          - fuzz_version_parser
          - fuzz_toml_input
          - fuzz_tool_spec
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust nightly
        uses: dtolnay/rust-toolchain@nightly

      - name: Install cargo-fuzz
        run: cargo install cargo-fuzz

      - name: Rust cache
        uses: swatinem/rust-cache@v2

      - name: Run fuzz target (60 seconds)
        run: |
          cd fuzz
          cargo +nightly fuzz run ${{ matrix.target }} -- -max_total_time=60
        continue-on-error: true

      - name: Upload crash artifacts
        uses: actions/upload-artifact@v4
        if: failure()
        with:
          name: fuzz-crashes-${{ matrix.target }}
          path: fuzz/artifacts/
          retention-days: 30

  fuzz-scheduled:
    name: Extended Fuzz (Scheduled)
    runs-on: ubuntu-latest
    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
    strategy:
      fail-fast: false
      matrix:
        target:
          - fuzz_config_parser
          - fuzz_version_parser
          - fuzz_toml_input
          - fuzz_tool_spec
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust nightly
        uses: dtolnay/rust-toolchain@nightly

      - name: Install cargo-fuzz
        run: cargo install cargo-fuzz

      - name: Rust cache
        uses: swatinem/rust-cache@v2

      - name: Download existing corpus
        uses: actions/download-artifact@v4
        with:
          name: fuzz-corpus-${{ matrix.target }}
          path: fuzz/corpus/${{ matrix.target }}
        continue-on-error: true

      - name: Run fuzz target (extended)
        run: |
          cd fuzz
          DURATION=${{ github.event.inputs.fuzz_duration || '28800' }}
          echo "Running fuzz target for ${DURATION} seconds..."
          cargo +nightly fuzz run ${{ matrix.target }} -- -max_total_time=${DURATION}
        continue-on-error: true

      - name: Upload corpus
        uses: actions/upload-artifact@v4
        with:
          name: fuzz-corpus-${{ matrix.target }}
          path: fuzz/corpus/${{ matrix.target }}
          retention-days: 90

      - name: Upload crash artifacts
        uses: actions/upload-artifact@v4
        if: failure()
        with:
          name: fuzz-crashes-${{ matrix.target }}
          path: fuzz/artifacts/
          retention-days: 90

      - name: Create issue on crash
        if: failure()
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const artifactPath = 'fuzz/artifacts/${{ matrix.target }}';

            if (fs.existsSync(artifactPath)) {
              const crashes = fs.readdirSync(artifactPath);
              if (crashes.length > 0) {
                await github.rest.issues.create({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  title: `[Fuzz] Crash found in ${{ matrix.target }}`,
                  body: `## Fuzz Testing Crash Report

**Target:** \`${{ matrix.target }}\`
**Workflow Run:** ${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}

### Crashes Found
${crashes.map(c => `- \`${c}\``).join('\n')}

### Next Steps
1. Download the crash artifacts from the workflow run
2. Reproduce locally with \`cargo +nightly fuzz run ${{ matrix.target }} <crash_input>\`
3. Fix the issue and add a regression test

/label bug fuzz`,
                  labels: ['bug', 'fuzz']
                });
              }
            }
        continue-on-error: true