name: tests

on:
  push:
    branches: [master]
  pull_request:

jobs:
  pytest:
    runs-on: docker
    container:
      image: debian:bookworm
    steps:
      - uses: actions/checkout@v4

      - name: Install dependencies
        run: |
          apt-get update
          # PyGObject + GTK introspection are needed because the modules under
          # test import gi.repository at import time; the tests themselves run
          # headless (no display, no encoding).
          apt-get install -y --no-install-recommends \
            python3 python3-pip python3-gi gir1.2-gtk-3.0 \
            python3-cairo python3-gi-cairo
          pip3 install --break-system-packages pytest

      - name: Run test suite
        run: python3 -m pytest