name: Benchmark
on:
  pull_request:
    branches: [master]
    types: [opened, reopened, synchronize]
concurrency:
  group: benchmark-${{ github.head_ref }}
  cancel-in-progress: true
jobs:
  benchmark:
    name: Benchmark
    runs-on: ubuntu-latest
    steps:
      - name: Install rust
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
      - name: Checkout base
        uses: actions/checkout@v2
        with:
          ref: master
      - name: Bench base
        run: cargo bench -- --output-format bencher | tee output.txt
      - name: Save base benchmark
        uses: pksunkara/github-action-benchmark@v1
        with:
          tool: cargo
          output-file-path: output.txt
          external-data-json-path: ./benchmark-data.json
          read-commit-id: true
      - name: Checkout pull request
        uses: actions/checkout@v2
        with:
          clean: false
      - name: Bench pull request
        run: cargo bench -- --output-format bencher | tee output.txt
      - name: Compare benchmarks
        uses: pksunkara/github-action-benchmark@v2
        with:
          tool: cargo
          output-file-path: output.txt
          external-data-json-path: ./benchmark-data.json
          github-token: ${{ github.token }}
          annotate-always: true