"""Tests for :mod:`apps.core.utils.pdf`. WeasyPrint needs native system deps (Pango, GTK). When those are missing we skip the actual render tests but still assert the module imports and fails loudly *only* at call site. """ from __future__ import annotations import pytest from apps.core.utils import pdf as pdf_module def _weasyprint_available() -> bool: try: import weasyprint # noqa: F401 except Exception: # pragma: no cover - environment-specific return False return True def test_module_imports_even_when_weasyprint_binaries_missing(): # Successful import of the helper module is the guarantee we rely on. assert callable(pdf_module.render_pdf) assert callable(pdf_module.render_pdf_from_html) assert callable(pdf_module.pdf_response) @pytest.mark.skipif(not _weasyprint_available(), reason="WeasyPrint native deps missing") def test_render_pdf_from_html_produces_valid_pdf_bytes(): html = "

Hello

" data = pdf_module.render_pdf_from_html(html) # PDF magic number. assert data[:4] == b"%PDF" @pytest.mark.skipif(not _weasyprint_available(), reason="WeasyPrint native deps missing") def test_pdf_response_sets_headers(): html = "x" data = pdf_module.render_pdf_from_html(html) assert data[:4] == b"%PDF"