feat: golang unit testing

stages:

    - static_tests

unit-tests:

  stage: static_tests

  image: golang:latest

  variables:

    UT_WORK_DIR: $CI_PROJECT_DIR

  script:

    # Switch to working directory

    - cd "$UT_WORK_DIR"

    # Install job dependencies

    - go get -u github.com/jstemmer/go-junit-report github.com/t-yuki/gocover-cobertura

    # Execute Unit tests to get both the junit report and a coverage file

    - go test -v -coverprofile=coverage.out ./... 2>&1 | go-junit-report -set-exit-code > report.xml

    # Output the coverage to stdout for coverage regex to read

    - go tool cover -func=coverage.out

    # Capture coverage in cobertura format for MR highlighting

    - gocover-cobertura < coverage.out > cobertura.xml

    # Capture coverage in HTML format for humans

    - go tool cover -html=coverage.out -o code-coverage.html

  # Regex below tells gitlab what to capture from job's stdout as a coverage figure

  coverage: '/total:\s+\(statements\)\s+(\d+.\d+%)/'

  artifacts:

    paths:

      - report.xml

      - code-coverage.html

    when: always

    reports:

      junit: report.xml

      cobertura: cobertura.xml