ci.yml

name: CI Tests

on: [push, pull_request]

jobs:
  test:
    name: Test ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-2022]

    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.13"

      - name: Install Linux dependencies
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y zlib1g-dev

      - name: Build Windows Libraries
        if: runner.os == 'Windows'
        uses: ./.github/actions/windows_actions

      - name: Install Python dependencies
        run: |
          pip install cython setuptools numpy narwhals
          pip install pandas polars
          pip install pytest mypy pytest-mypy-plugins pandas-stubs

      # The ReadStat C library (src/) contains strict-aliasing violations
      # (e.g. void* <-> readstat_variable_t** casts in readstat_writer.c).
      # gcc 13+ at -O2 exploits this UB and optimizes away value-label writes.
      # -fno-strict-aliasing disables that assumption while keeping other -O2 opts.
      - name: Install package
        run: pip install .
        env:
          CFLAGS: ${{ runner.os == 'Linux' && '-O2 -fno-strict-aliasing' || '' }}

      - name: Run basic tests
        run: python tests/test_basic.py

      - name: Run narwhals pandas tests
        run: python tests/test_narwhalified.py --backend=pandas

      - name: Run narwhals polars tests
        run: python tests/test_narwhalified.py --backend=polars

      - name: Run HTTP integration tests
        run: python tests/test_http_integration.py

      - name: Run runtime type tests
        run: python tests/test_runtime_types.py

      - name: Run typing tests
        run: pytest tests/test_typing.yml --mypy-ini-file=tests/test_mypy_setup.ini