# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/test-go-task.md
name: Test Go

env:
  # See: https://github.com/actions/setup-go/tree/main#supported-version-syntax
  GO_VERSION: "1.22"
  COVERAGE_ARTIFACT: coverage-data

# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
on:
  create:
  push:
    paths:
      - ".github/workflows/test-go-task.ya?ml"
      - ".github/.?codecov.ya?ml"
      - "dev/.?codecov.ya?ml"
      - ".?codecov.ya?ml"
      - "go.mod"
      - "go.sum"
      - "Taskfile.ya?ml"
      - "**.go"
      - "**/testdata/**"
  pull_request:
    paths:
      - ".github/workflows/test-go-task.ya?ml"
      - ".github/.?codecov.ya?ml"
      - "dev/.?codecov.ya?ml"
      - ".?codecov.ya?ml"
      - "go.mod"
      - "go.sum"
      - "Taskfile.ya?ml"
      - "**.go"
      - "**/testdata/**"
  workflow_dispatch:
  repository_dispatch:

jobs:
  run-determination:
    runs-on: ubuntu-latest
    outputs:
      result: ${{ steps.determination.outputs.result }}
    steps:
      - name: Determine if the rest of the workflow should run
        id: determination
        run: |
          RELEASE_BRANCH_REGEX="refs/heads/[0-9]+.[0-9]+.x"
          # The `create` event trigger doesn't support `branches` filters, so it's necessary to use Bash instead.
          if [[ \
            "${{ github.event_name }}" != "create" || \
            "${{ github.ref }}" =~ $RELEASE_BRANCH_REGEX \
          ]]; then
            # Run the other jobs.
            RESULT="true"
          else
            # There is no need to run the other jobs.
            RESULT="false"
          fi

          echo "result=$RESULT" >> $GITHUB_OUTPUT

  tests-collector:
    runs-on: ubuntu-latest
    needs: run-determination
    if: needs.run-determination.outputs.result == 'true'
    outputs:
      tests-data: ${{ steps.collection.outputs.tests-data }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Collect tests
        id: collection
        # jq flags must be "-cRn" see: https://stackoverflow.com/a/68859958/1655275
        run: |
          echo "tests-data=$(go list ./internal/integrationtest/... | grep integrationtest/ | tr "/" " " | cut -d " " -f 6 | jq -cRn '[inputs]')" >> $GITHUB_OUTPUT

  test-integration:
    needs: tests-collector
    strategy:
      fail-fast: false
      matrix:
        operating-system:
          - windows-latest
          - macos-latest
          - ubuntu-latest
        tests: ${{ fromJSON(needs.tests-collector.outputs.tests-data) }}

    runs-on: ${{ matrix.operating-system }}

    steps:
      # By default, actions/checkout converts the repo's LF line endings to CRLF on the Windows runner.
      - name: Disable EOL conversions
        run: git config --global core.autocrlf false

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Install Task
        uses: arduino/setup-task@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          version: 3.x

      - name: Run tests
        shell: bash
        run: |
          export GO_TEST_PACKAGE="github.com/arduino/arduino-cli/internal/integrationtest/${{ matrix.tests }}"
          task go:integration-test
          mv coverage_integration.txt coverage_integration_${{ matrix.operating-system }}_${{ matrix.tests }}.txt

      - name: Upload coverage data to workflow artifact
        uses: actions/upload-artifact@v4
        with:
          if-no-files-found: error
          name: ${{ env.COVERAGE_ARTIFACT }}-test-integration-${{ matrix.operating-system }}-${{ matrix.tests }}
          path: |
            ./coverage_integration_*.txt

  test:
    needs: run-determination
    strategy:
      fail-fast: false
      matrix:
        operating-system:
          - windows-latest
          - macos-latest
          - ubuntu-latest

    runs-on: ${{ matrix.operating-system }}

    steps:
      # By default, actions/checkout converts the repo's LF line endings to CRLF on the Windows runner.
      - name: Disable EOL conversions
        run: git config --global core.autocrlf false

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Install Task
        uses: arduino/setup-task@v2
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          version: 3.x

      - name: Run tests
        run: task go:test

      - name: Upload coverage data to workflow artifact
        if: runner.os == 'Linux'
        uses: actions/upload-artifact@v4
        with:
          if-no-files-found: error
          name: ${{ env.COVERAGE_ARTIFACT }}-test-${{ matrix.operating-system }}
          path: |
            ./coverage_unit.txt

  coverage-upload:
    runs-on: ubuntu-latest
    needs:
      - test
      - test-integration
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Go
        uses: actions/setup-go@v5
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Install gocovmerge
        run: go install github.com/wadey/gocovmerge@b5bfa59

      - name: Download coverage data artifact
        uses: actions/download-artifact@v4
        with:
          pattern: ${{ env.COVERAGE_ARTIFACT }}-*
          merge-multiple: true

      - name: Merge all code coverage artifacts
        run: gocovmerge coverage*.txt > coverage.txt

      # A token is used to avoid intermittent spurious job failures caused by rate limiting.
      - name: Set up Codecov upload token
        run: |
          if [[ "${{ github.repository }}" == "arduino/arduino-cli" ]]; then
            # In order to avoid uploads of data from forks, only use the token for runs in the arduino/arduino-ide repo.
            # Token is intentionally exposed.
            # See: https://community.codecov.com/t/upload-issues-unable-to-locate-build-via-github-actions-api/3954
            CODECOV_TOKEN="18b9885b-cbf2-4166-bfbb-39617323daf0"
          else
            # codecov/codecov-action does unauthenticated upload if empty string is passed via the `token` input.
            CODECOV_TOKEN=""
          fi
          echo "CODECOV_TOKEN=$CODECOV_TOKEN" >> "$GITHUB_ENV"

      - name: Send unit tests coverage to Codecov
        uses: codecov/codecov-action@v3
        with:
          token: ${{ env.CODECOV_TOKEN }}
          files: ./coverage.txt
          flags: unit
          fail_ci_if_error: ${{ github.repository == 'arduino/arduino-cli' }}
