version: 2
jobs:
  build:
    machine: true
    environment:
      # PROJECT_GO_PACKAGE: github.com/anacrolix/torrent
    # Should use PROJECT_GO_PACKAGE here but it's not interpolated for this
    # field. https://discuss.circleci.com/t/environment-variable-expansion-in-
    # working-directory/11322/4
    # working_directory: ~/go/src/github.com/anacrolix/torrent
    steps:
      # - run: echo $PROJECT_GO_PACKAGE
      - run: echo $CIRCLE_WORKING_DIRECTORY
      - run: echo $PWD
      - run: echo $GOPATH
      - run: echo 'export GOPATH=$HOME/go' >> $BASH_ENV
      - run: echo 'export PATH="$GOPATH/bin:$PATH"' >> $BASH_ENV
      - run: echo $GOPATH
      - run: which go
      - run: go version
      - run: |
          cd /usr/local
          sudo mkdir go.master
          sudo chown `whoami` go.master
      - restore_cache:
          key: go-root-
      - run: |
          cd /usr/local
          git clone git://github.com/golang/go go.master || true
          cd go.master
          git pull
          [[ -x bin/go && `git rev-parse HEAD` == `cat anacrolix.built` ]] && exit
          cd src
          ./make.bash || exit
          git rev-parse HEAD > ../anacrolix.built
      - save_cache:
          paths: /usr/local/go.master
          key: go-root-{{ checksum "/usr/local/go.master/anacrolix.built" }}
      - run: echo 'export PATH="/usr/local/go.master/bin:$PATH"' >> $BASH_ENV
      - run: go version
      - checkout
      - run: sudo apt-get update
      - run: sudo apt install fuse pv
      - restore_cache:
          keys:
            - go-pkg-
      - restore_cache:
          keys:
            - go-cache-
      - run: go get -d ./...
      - run: go test -v -race ./... -count 2
      - run: go test -bench . ./...
      - run: set +e; CGO_ENABLED=0 go test -v ./...; true
      - run: go install ./cmd/torrentfs
      - save_cache:
          key: go-pkg-{{ checksum "go.mod" }}
          paths:
            - ~/go/pkg
      - run: sudo modprobe fuse
      - run: fs/test.sh
      - save_cache:
          key: go-cache-{{ .Revision }}
          paths:
            - ~/.cache/go-build
          when: always