version: 2

jobs:
    build:
        docker:
            -
                image: circleci/golang:1.12
                environment:
                    GOFLAGS: -mod=readonly

        steps:
            - checkout

            -
                restore_cache:
                    name: Restore build dependencies
                    keys:
                        - build-deps-v1-{{ .Branch }}-{{ checksum "Makefile" }}

            -
                restore_cache:
                    name: Restore dependencies
                    keys:
                        - gomod-v1-{{ .Branch }}-{{ checksum "go.sum" }}
                        - gomod-v1-{{ .Branch }}
                        - gomod-v1-master
                        - gomod-v1

            -
                run:
                    name: Download Go module cache
                    command: go mod download

            -
                save_cache:
                    name: Save dependencies
                    key: gomod-v1-{{ .Branch }}-{{ checksum "go.sum" }}
                    paths:
                        - /go/pkg/mod

            -
                run:
                    name: Run tests
                    command: TEST_PKGS=$(echo `go list ./... | circleci tests split`) TEST_REPORT_NAME=results_${CIRCLE_NODE_INDEX}.xml make test

            -
                save_cache:
                    name: Save build dependencies
                    key: build-deps-v1-{{ .Branch }}-{{ checksum "Makefile" }}
                    paths:
                        - bin/

            -
                store_test_results:
                    path: build/test_results/