backend-ci.yml

name: Backend CI workflow

on: 
  push:
    paths:
      - chartlets.py/**
    branches:
      - main
  pull_request:
    paths:
        - chartlets.py/**
      
jobs:
  python-tests:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    defaults:
      run:
        working-directory: chartlets.py 

    steps:
    - uses: actions/checkout@v3
    
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v3
      with:
        python-version: ${{ matrix.python-version }}
        
    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install .[dev,demo]
        
    - name: Lint with flake8
      run: |
        # stop the build if there are Python syntax errors or undefined names
        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
        
    - name: Run unit tests
      shell: bash -l {0}
      run: |
        pytest --cov=chartlets --cov-report=xml

    - name: Upload coverage reports to Codecov
      uses: codecov/codecov-action@v4
      with:
        fail_ci_if_error: true
        directory: chartlets.py/
        flags: backend
        verbose: true
        token: ${{ secrets.CODECOV_TOKEN }}