version: 2.1

executors:
  go:
    docker:
      - image: circleci/golang:1.14
    environment:
      GOMAXPROCS: 4
      GO111MODULE: "on"
      GOPROXY: https://proxy.golang.org/
      TEST_RESULTS_DIR: &TEST_RESULTS_DIR /tmp/test-results

jobs:
  go-checks:
    executor:
      name: go
    steps:
      - checkout
      - run: go mod verify
      - run: make fmt
      - run:
          name: verify no code was generated
          command: |
            if [[ -z $(git status --porcelain) ]]; then
              echo "Git directory is clean."
            else
              echo "Git is dirty. Run `make fmt` and `make generate` locally and commit any formatting fixes or generated code."
              git status --porcelain
              exit 1
            fi

  go-test:
    executor:
      name: go
    steps:
      - checkout
      - attach_workspace:
          at: .
      - run: mkdir -p $TEST_RESULTS_DIR
      - run:
          name: Run Go Tests
          command: |
            PACKAGE_NAMES=$(go list ./... | circleci tests split --split-by=timings --timings-type=classname)
            echo "Running $(echo $PACKAGE_NAMES | wc -w) packages"
            echo $PACKAGE_NAMES
            gotestsum --format=short-verbose --junitfile $TEST_RESULTS_DIR/gotestsum-report.xml -- -p 2 -cover -coverprofile=cov_$CIRCLE_NODE_INDEX.part $PACKAGE_NAMES

      # save coverage report parts
      - persist_to_workspace:
          root: .
          paths:
            - cov_*.part

      - store_test_results:
          path: *TEST_RESULTS_DIR
      - store_artifacts:
          path: *TEST_RESULTS_DIR

workflows:
  version: 2
  test:
    jobs:
      - go-test