name: CI testing

# see: https://help.github.com/en/actions/reference/events-that-trigger-workflows

on:

  # Trigger the workflow on push or pull request, but only for the main branch

  push:

    branches:

      - main

  pull_request:

    branches:

      - main

jobs:

  tests:

    runs-on: ${{ matrix.os }}

    strategy:

      fail-fast: false

      matrix:

        os: [ubuntu-latest, macOS-latest, windows-latest]

        python-version: [3.8, 3.9]

    # Timeout: https://stackoverflow.com/a/59076067/4521646

    timeout-minutes: 35

    steps:

    - uses: actions/checkout@v2

    - name: Set up Python ${{ matrix.python-version }}

      uses: actions/setup-python@v2

      with:

        python-version: ${{ matrix.python-version }}

    # Github Actions: Run step on specific OS: https://stackoverflow.com/a/57948488/4521646

    - name: Setup macOS

      if: runner.os == 'macOS'

      run: |

        brew install libomp  # https://github.com/pytorch/pytorch/issues/20030

    - name: Install dependencies

      run: |

        pip install tox virtualenv setuptools

      shell: bash

    - name: Tests

      run: |

        tox -e build

        tox