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"""Tests for Chinese CID font registration (issue #24).

Verifies that STSong-Light is registered as the cross-platform Chinese CID

font instead of invalid system font names like SimSun/SimHei.

"""

import sys

from pathlib import Path

import pytest

sys.path.insert(0, str(Path(__file__).parent.parent))

class TestChineseCIDFont:

"""Test CID font registration for Chinese text rendering."""

def test_stsong_light_is_valid_cid_font(self):

"""STSong-Light should register successfully as a CID font."""

from reportlab.pdfbase.cidfonts import UnicodeCIDFont

from reportlab.pdfbase import pdfmetrics

font = UnicodeCIDFont("STSong-Light")

pdfmetrics.registerFont(font)

# No exception means it worked

def test_invalid_cid_font_names_raise(self):

"""Font names used in the old code should fail as CID fonts."""

from reportlab.pdfbase.cidfonts import UnicodeCIDFont

invalid_names = ["SimSun", "SimHei", "Microsoft YaHei", "STHeiti"]

for name in invalid_names:

with pytest.raises(Exception):

UnicodeCIDFont(name)

def test_all_valid_cid_cjk_font_names(self):

"""Verify the set of valid CJK CID font names in reportlab."""

from reportlab.pdfbase.cidfonts import UnicodeCIDFont

from reportlab.pdfbase import pdfmetrics

valid_cjk = [

"STSong-Light",

"MSung-Light",

"HeiseiMin-W3",

"HeiseiKakuGo-W5",

"HYSMyeongJo-Medium",

]

for name in valid_cjk:

font = UnicodeCIDFont(name)

pdfmetrics.registerFont(font)