mews.page/tests/test_data.py

"""The packaged copies of the stylesheet and the DTD, against their originals.

The validator has to find both when it is installed as a wheel with nothing but
the package on disk, so mews/data holds copies. They must not drift.
"""

from importlib import resources
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent

COPIES = {
    "mews-0.1.css": ROOT / "mews-0.1.css",
    "mews-0.1.dtd": ROOT / "dtd" / "mews-0.1.dtd",
}

# The Pelican plugin is a separate distributable package, so it carries its own
# copy of the DTD rather than importing one. It shipped a hand-written
# placeholder for a while, which silently stripped tables, ordered lists, forms
# and the body variant class out of every page it produced.
PLUGIN_DTD = ROOT / "pelican-mews" / "pelican" / "plugins" / "mews" / "dtd" / "mews.dtd"


def test_packaged_copies_match_the_originals():
    for name, original in COPIES.items():
        packaged = resources.files("mews.data").joinpath(name).read_bytes()
        assert packaged == original.read_bytes(), (
            f"mews/data/{name} differs from {original}. Copy the original over it."
        )


def test_the_spec_quotes_the_same_stylesheet():
    """SPEC.md 5.1 prints the stylesheet in full; it has to be the same file."""
    spec = (ROOT / "doc" / "SPEC.md").read_text()
    quoted = spec.split("```css\n", 1)[1].split("```", 1)[0]
    assert quoted.strip() == (ROOT / "mews-0.1.css").read_text().strip()


def test_the_pelican_plugin_bundles_the_real_dtd():
    canonical = (ROOT / "dtd" / "mews-0.1.dtd").read_bytes()
    assert PLUGIN_DTD.read_bytes() == canonical, (
        f"{PLUGIN_DTD} differs from dtd/mews-0.1.dtd. Copy the original over it."
    )