name: Unit Testing

on:
  workflow_call:
    inputs:
      TestReport:
        description: "Generate unit test report with junitxml and upload results as an artifact."
        required: false
        default: false
        type: string

jobs:

  UnitTesting:
    name: ${{ matrix.icon }} Unit Tests using Python ${{ matrix.python }}
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        include:
#          - {python: "3.6",  icon: 🔴} # until 23.12.2021
          - {python: "3.7",  icon: 🟠} # until 27.06.2023
          - {python: "3.8",  icon: 🟡} # until Oct. 2024
          - {python: "3.9",  icon: 🟢} # until Oct. 2025
          - {python: "3.10", icon: 🟢} # until Oct. 2026

    steps:
      - name: ⏬ Checkout repository
        uses: actions/checkout@v2

      - name: 🐍 Setup Python ${{ matrix.python }}
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python }}

      - name: 🔧 Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r tests/requirements.txt

      - name: ☑ Run unit tests
        run: |
          [ '${{ inputs.TestReport }}' = 'true' ] && PYTEST_ARGS='--junitxml=TestReport.xml' || unset PYTEST_ARGS
          python -m pytest -rA tests/unit $PYTEST_ARGS --color=yes

      - name: 📤 Upload 'TestReport.xml' artifact
        if: inputs.TestReport == 'true'
        uses: actions/upload-artifact@v2
        with:
          name: TestReport-${{ matrix.python }}
          path: TestReport.xml
          if-no-files-found: error
          retention-days: 1