name: Fuzz

on: [push, pull_request]

jobs:

  fuzz:
    runs-on: ubuntu-20.04
    env:
      HFUZZ_BUILD_ARGS: "--features honggfuzz_fuzz"
    strategy:
      fail-fast: false
      matrix:
        fuzz_target: [deser_net_msg, deserialize_address, deserialize_amount, deserialize_block, deserialize_psbt, deserialize_script, deserialize_transaction, outpoint_string, uint128_fuzz]
    steps:
      - name: Install test dependencies
        run: sudo apt-get update -y && sudo apt-get install -y binutils-dev libunwind8-dev libcurl4-openssl-dev libelf-dev libdw-dev cmake gcc libiberty-dev
      - uses: actions/checkout@v2
      - uses: actions/cache@v2
        id: cache-fuzz
        with:
          path: |
            ~/.cargo/bin
            fuzz/target
            target
          key: cache-${{ matrix.target }}-${{ hashFiles('**/Cargo.toml','**/Cargo.lock') }}
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: nightly
          override: true
          profile: minimal
      - run: cargo install honggfuzz
        if: steps.cache-fuzz.outputs.cache-hit != 'true'
      - run: echo "HFUZZ_RUN_ARGS=\"--run_time 30 --exit_upon_crash -v -f hfuzz_input/${{ matrix.fuzz_target }}/input\"" >> $GITHUB_ENV
      - name: fuzz
        run: cd fuzz && cargo +nightly hfuzz run ${{ matrix.fuzz_target }}
      - run: echo "${{ matrix.fuzz_target }}.rs" >executed_${{ matrix.fuzz_target }}
      - uses: actions/upload-artifact@v2
        with:
          name: executed_${{ matrix.fuzz_target }}
          path: executed_${{ matrix.fuzz_target }}

  verify-execution:
    needs: fuzz
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/download-artifact@v2
      - name: Display structure of downloaded files
        run: ls -R
      - run: find executed_* -type f -exec cat {} + | sort > executed
      - run: ls fuzz/fuzz_targets | sort > expected
      - run: diff expected executed