test.yaml

name: Test

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        python-version: ['3.10']
        os: [ubuntu-latest, macos-latest]

    steps:
    - uses: actions/checkout@v2

    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v4
      with:
        python-version: ${{ matrix.python-version }}

    -   name: Install system dependencies on Ubuntu
        if: runner.os == 'Linux'
        run: |
            sudo apt-get update
            sudo apt-get install -y graphviz libgraphviz-dev

    -   name: Install system dependencies on macOS
        if: runner.os == 'macOS'
        run: brew install graphviz

    - name: Install pygraphviz on Ubuntu
      if: runner.os == 'Linux'
      run: python -m pip install pygraphviz

    -   name: Install pygraphviz on macOS
        if: runner.os == 'macOS'
        env:
            BREW_GRAPHVIZ_PREFIX: $(brew --prefix graphviz)
            CFLAGS: -I${BREW_GRAPHVIZ_PREFIX}/include
            LDFLAGS: -L${BREW_GRAPHVIZ_PREFIX}/lib
            ARCHFLAGS: "-arch x86_64"
        run: |
            echo "Graphviz is installed at: $BREW_GRAPHVIZ_PREFIX"
            echo "CFLAGS: $CFLAGS"
            echo "LDFLAGS: $LDFLAGS"
            echo "ARCHFLAGS: $ARCHFLAGS"
            python -m pip install pygraphviz --no-binary pygraphviz

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install .[dev,test]
        pip install pytest pytest-cov codecov

    - name: Check for test files
      id: check_tests
      run: |
        if ls tests/*_test.py 1> /dev/null 2>&1; then
          echo "Tests found."
          echo "tests-found=true" >> $GITHUB_ENV
        else
          echo "No tests found. Skipping pytest."
          echo "tests-found=false" >> $GITHUB_ENV
        fi

    - name: Run tests
      if: env.tests-found == 'true'
      env:
        MPLBACKEND: agg
        PLATFORM: ${{ matrix.os }}
      run: |
        pytest -v --cov=./ --cov-report=xml

    - name: Check for coverage report
      if: env.tests-found == 'true'
      run: |
        if [ -f ./coverage.xml ]; then
          echo "coverage-found=true" >> $GITHUB_ENV
        else
          echo "coverage-found=false" >> $GITHUB_ENV
        fi

    - name: Upload coverage to Codecov
      if: env.coverage-found == 'true'
      uses: codecov/codecov-action@v3
      with:
        file: ./coverage.xml
        flags: unittests
        env_vars: OS,PYTHON
        name: codecov-umbrella
        fail_ci_if_error: true