version: 2.1

workflows:
  version: 2
  test:
    jobs:
      - Run tests
  coverage:
    jobs:
      - Gen Coverage

jobs:
  Run tests:
    docker:
      - image: circleci/rust:1.36.0

    steps:
      - checkout
      - run:
          name: Version information
          command: rustc --version; cargo --version; rustup --version
      - run:
          name: Test (all features)
          command: cargo test --all --verbose
      - run:
          name: Test (only alloc)
          # use `--tests` to skip doctests for the `alloc` feature, since they
          # fail because of https://github.com/rust-lang/rust/issues/54010
          command: cargo test --tests --features=alloc --no-default-features
      - run:
          name: Test (no std or alloc)
          command: cargo test --all --no-default-features
      - run:
          # TODO: collect benchmark output somehow?
          name: Build benchmarks
          command: cargo bench --no-run
      # TODO: make sure the fuzz tests build and run for like, at least a second
      # or so.

  Gen Coverage:
    machine: true
    steps:
      - checkout
      - run:
          name: Download rustup
          command: |
            wget https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init
            chmod +x rustup-init
      - run:
          name: Install Rust
          command: |
            ./rustup-init -y --no-modify-path
            rm rustup-init
            echo 'export PATH=$HOME/.cargo/bin:$PATH' >> $BASH_ENV
      - run: sudo apt-get update
      - run: sudo apt-get install libssl-dev pkg-config cmake zlib1g-dev
      - run:
          name: Install Tarpaulin
          command: cargo install cargo-tarpaulin
          environment:
            RUSTFLAGS: --cfg procmacro2_semver_exempt
      - run:
          name: Generate coverage report
          command: cargo tarpaulin --out Xml --all-features
      - run:
          name: Upload to codecov.io
          command: bash <(curl -s https://codecov.io/bash) -Z -f cobertura.xml