fix: preserve exports on close and support themed PDF without export quotas

This commit is contained in:
2026-09-07 14:04:03 +08:00
parent 47c53b6f38
commit 9f097ea629
20 changed files with 485 additions and 123 deletions
+6 -6
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@@ -334,17 +334,16 @@ def test_pdf_exporter_function_plot_fallback_on_error() -> None:
assert any("函数图像" in w for w in result.warnings)
def test_pdf_exporter_limits_function_plot_count() -> None:
def test_pdf_exporter_has_no_function_plot_count_quota() -> None:
from app.export.exporters.pdf import PdfExporter
blocks = "\n\n".join("```function-plot\ny = x\n```" for _ in range(20))
result = asyncio.run(PdfExporter().export(parse_document(blocks), ExportOptions()))
assert result.content[:4] == b"%PDF"
# 超出数量上限的图块回退占位并记 warning
assert any("数量超过上限" in w for w in result.warnings)
assert not any("函数图像" in w for w in result.warnings)
def test_pdf_exporter_limits_total_plot_nodes(monkeypatch) -> None:
def test_pdf_exporter_has_no_total_plot_node_quota(monkeypatch) -> None:
import app.export.exporters._common as common_mod
from app.export.exporters.pdf import PdfExporter
@@ -352,7 +351,7 @@ def test_pdf_exporter_limits_total_plot_nodes(monkeypatch) -> None:
md = "```function-plot\ny = x\n```\n\n```function-plot\ny = x + x + x + x\n```"
result = asyncio.run(PdfExporter().export(parse_document(md), ExportOptions()))
assert result.content[:4] == b"%PDF"
assert any("累计复杂度" in w for w in result.warnings)
assert not any("函数图像" in w for w in result.warnings)
def test_docx_exporter_embeds_plot_and_warns_missing_mermaid() -> None:
@@ -831,7 +830,8 @@ def test_callout_formats(name):
xml = z.read("word/document.xml").decode()
assert all(word in xml for word in ["Title", "Body", "item", "second", "w:shd"])
result = PdfExporter().render(doc, ExportOptions(theme_id="sepia"))
assert result.content.startswith(b"%PDF") and len(result.warnings) == 1
assert result.content.startswith(b"%PDF")
assert not any("浅色打印" in warning for warning in result.warnings)
@pytest.mark.parametrize("fold", ["", "+", "-"])
+96
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@@ -0,0 +1,96 @@
"""PDF theme and resource policy regressions; no real providers or user files."""
import asyncio
import base64
from io import BytesIO
import pytest
from PIL import Image
from pydantic import ValidationError
from app.contracts import ExportAsset, ExportOptions, ExportRequest
from app.export.assets import validate_assets, enrich_document, source_hash
from app.export.exporters.pdf import PdfExporter
from app.export.markdown import parse_document
from app.export.themes import PALETTES
from app.export import service
def png_asset(size=(40,30), source='graph LR; A-->B'):
out=BytesIO(); Image.new('RGBA',size,(0,0,0,0)).save(out,'PNG')
return ExportAsset(kind='mermaid',source_hash=source_hash(source),png_base64=base64.b64encode(out.getvalue()).decode())
@pytest.mark.parametrize('theme',list(PALETTES))
def test_pdf_theme_colors_are_written_on_every_page(theme):
import re, zlib
palette=PALETTES[theme]
doc=parse_document(('## Section\n\nText body\n\n> Quoted text\n\n```python\nprint(1)\n```\n\n')*30)
result=PdfExporter().render(doc,ExportOptions(theme_id=theme))
streams=[]
for match in re.finditer(rb'stream\r?\n(.*?)endstream',result.content,re.S):
try: streams.append(zlib.decompress(base64.a85decode(match[1].strip().removesuffix(b'~>'))))
except Exception: pass
from reportlab.lib.rl_accel import fp_str
command=(fp_str(*[int(palette[0][i:i+2],16)/255 for i in (1,3,5)])+' rg').encode()
pages=[s for s in streams if b'BT' in s and b'/F' in s]
assert len(pages)>1
assert all(command in s for s in pages)
assert not any('浅色打印' in w for w in result.warnings)
def test_pdf_accepts_asset_contract_beyond_previous_count_and_size():
assets=[png_asset(source=str(i)) for i in range(65)]
assets[0]=assets[0].model_copy(update={'png_base64':'A'*2800004})
values=dict(source={'type':'markdown','markdown':'content'},assets=assets)
ExportRequest(format='pdf',**values)
with pytest.raises(ValidationError): ExportRequest(format='html',**values)
with pytest.raises(ValidationError): ExportRequest(format='docx',**values)
def test_pdf_large_png_still_requires_valid_format():
asset=png_asset((2100,2000))
assert validate_assets([asset],unlimited=True)
with pytest.raises(Exception): validate_assets([asset])
with pytest.raises(Exception): validate_assets([asset.model_copy(update={'png_base64':'invalid'})],unlimited=True)
def test_pdf_embeds_more_than_64_resources_with_theme_background():
doc=parse_document(('```mermaid\ngraph LR; A-->B\n```\n\n')*65)
from app.export.assets import attach_assets
attach_assets(doc,validate_assets([png_asset()],unlimited=True))
assert not enrich_document(doc,unlimited=True,options=ExportOptions(theme_id='dark'))
assert all('static_png' in node.attributes for node in doc.children)
with Image.open(BytesIO(doc.children[-1].attributes['static_png'])) as image:
assert image.getpixel((0,0)) == (13,17,23)
assert PdfExporter().render(doc,ExportOptions(theme_id='dark')).content.startswith(b'%PDF')
def test_pdf_pipeline_ignores_source_and_output_quotas(monkeypatch):
monkeypatch.setattr(service,'MAX_MARKDOWN_CHARS',8)
monkeypatch.setattr(service,'MAX_EXPORT_BYTES',8)
async def run():
job=await service.create_export(ExportRequest(format='pdf',source={'type':'markdown','markdown':'Beyond the previous quota.'}))
done=await service.wait_for_export(job.job_id)
assert done.status.value=='completed'
assert service.get_export_file(job.job_id).stat().st_size>8
with pytest.raises(Exception):
await service.create_export(ExportRequest(format='html',source={'type':'markdown','markdown':'Beyond the previous quota.'}))
asyncio.run(run())
def test_pdf_accepts_more_than_16_curves_and_keeps_expression_safety():
doc=parse_document('```function-plot\n'+'\n'.join(f'y=x+{i}' for i in range(17))+'\n```')
result=PdfExporter().render(doc,ExportOptions(theme_id='dark'))
assert not any('函数图像' in w for w in result.warnings)
unsafe=PdfExporter().render(parse_document('```function-plot\ny=__import__("os")\n```'),ExportOptions())
assert any('函数图像' in w for w in unsafe.warnings)
def test_pdf_custom_palette_and_math_color():
palette=dict(zip(('page','surface','text','muted','code','border','accent'),PALETTES['midnight-purple']))
options=ExportOptions(theme_id='my-theme',palette=palette)
doc=parse_document('Formula $x^2$')
assert not enrich_document(doc,unlimited=True,options=options)
math=next(n for n in doc.children[0].children if n.type=='math_inline')
with Image.open(BytesIO(math.attributes['static_png'])) as image:
assert image.getpixel((0,0))==(25,19,34)
assert not any('主题' in w for w in PdfExporter().render(doc,options).warnings)
with pytest.raises(ValidationError): ExportOptions(palette={**palette,'text':'url(file:///private)'})