ci.yml

name: CI

on:
  push:
    branches:
      - master
  pull_request:

jobs:
  test:
    name: Test

    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v1

      - name: Cleanup pre-installed Rust toolchains
        # The pre-installed toolchain is under root permission, and this would
        # make tarball fail to extract. Here we remove the symlink and install
        # our own Rust toolchain if necessary.
        run: |
          which rustup
          which cargo
          if [[ -L "$HOME/.cargo" && -L "$HOME/.rustup" ]]; then
              rm -v "$HOME/.rustup"
              rm -v "$HOME/.cargo"
          fi
          echo "$HOME/.cargo/bin" >> $GITHUB_PATH

      - name: Cache rustup
        uses: actions/cache@v1
        with:
          path: ~/.rustup
          key: ${{ runner.os }}-rustup-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
              ${{ runner.os }}-rustup-

      - name: Cache cargo binaries
        uses: actions/cache@v1
        with:
          path: ~/.cargo/bin
          key: ${{ runner.os }}-cargo-bin-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-bin-

      - name: Cache cargo registry cache
        uses: actions/cache@v1
        with:
          path: ~/.cargo/registry/cache
          key: ${{ runner.os }}-cargo-registry-cache-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-registry-cache-

      - name: Cache cargo registry index
        uses: actions/cache@v1
        with:
          path: ~/.cargo/registry/index
          key: ${{ runner.os }}-cargo-registry-index-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-registry-index-

      - name: Cache cargo git db
        uses: actions/cache@v1
        with:
          path: ~/.cargo/git/db
          key: ${{ runner.os }}-cargo-git-db-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-git-db-

      - name: Cache cargo build
        uses: actions/cache@v1
        with:
          path: target
          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-build-target-

      - name: Install stable Rust
        run: |
          if [[ ! -d "$HOME/.cargo" || ! -d "$HOME/.rustup" ]]; then
              curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup-init.sh
              sh rustup-init.sh -y --default-toolchain none
          fi
          rustup update stable
          rustup default stable

      - name: Test and build
        run: |
          cargo test --verbose
          cargo build --verbose

      - name: Lint
        run: cargo fmt -- --check # TODO: add clippy