name: CI
on: [push, pull_request]
env:
  CI: true

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

    strategy:
      fail-fast: false
      matrix:
        python: [3.5, 3.6, 3.7, 3.8]
        os: [ubuntu-latest, macos-latest]

    steps:
      - name: Clone repository
        uses: actions/checkout@v2

      - name: Set up Python
        uses: actions/setup-python@v1
        with:
          python-version: ${{ matrix.python }}
          architecture: "x64"

      - name: Cache dependencies
        uses: actions/cache@v2
        with:
          path: ~/miniconda3
          key: ${{ runner.os }}-python-v${{ matrix.python }}-${{ hashFiles('**/requirements.txt') }}-${{ hashFiles('ci/*.sh') }}
          restore-keys: ${{ runner.os }}-python-v${{ matrix.python }}-${{ hashFiles('**/requirements.txt') }}-${{ hashFiles('ci/*.sh') }}

      - name: Install conda
        env:
          PYTHON_VERSION: ${{ matrix.python }}
        run: |
          export PATH="$HOME/miniconda3/bin:$PATH"
          ci/install_conda.sh
          ci/setup_conda_env.sh

      - name: Run tests
        run: |
          export PATH="$HOME/miniconda3/bin:$PATH"
          ci/lint.sh
          ci/test.sh