update req, pdf generation.

Author: ash01ish

requirements/ci-3.11.txt

@@ -75,3 +75,5 @@ typing-extensions==4.12.2
     # via
     #   mypy
     #   typeguard
+brotli==1.1.0
+    # via -r requirements/ci.in

requirements/ci.txt

@@ -77,3 +77,5 @@ typing-extensions==4.12.2
     #   typeguard
 zipp==3.20.2
     # via importlib-metadata
+brotli==1.1.0
+    # via -r requirements/ci.in

requirements/dev.txt

@@ -86,3 +86,5 @@ zipp==3.20.2
 # The following packages are considered to be unsafe in a requirements file:
 # pip
 # setuptools
+brotli==1.1.0
+    # via -r requirements/ci.in

resources/brotli-test/Brotli-Prototype-PDFs/Brotli-Prototype-FileA.pdf

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+"""
+Create a minimal PDF with Brotli compression for testing purposes.
+
+This script generates a simple PDF file that uses Brotli compression
+for the content stream, allowing for testing of the BrotliDecode filter
+in pypdf.
+"""
+
+import brotli
+import os
+
+# Simple PDF structure with Brotli-compressed content stream
+# The content stream will contain a simple "Hello, Brotli!" text
+content_stream = b"BT /F1 24 Tf 100 700 Td (Hello, Brotli!) Tj ET"
+compressed_content = brotli.compress(content_stream, quality=5)
+
+# PDF structure
+pdf = [
+    b"%PDF-1.7\n",
+    b"1 0 obj\n<< /Type /Catalog /Pages 2 0 R >>\nendobj\n",
+    b"2 0 obj\n<< /Type /Pages /Kids [3 0 R] /Count 1 >>\nendobj\n",
+    b"3 0 obj\n<< /Type /Page /Parent 2 0 R /MediaBox [0 0 612 792] /Contents 4 0 R /Resources << /Font << /F1 5 0 R >> >> >>\nendobj\n",
+    b"4 0 obj\n<< /Length " + str(len(compressed_content)).encode() + b" /Filter /BrotliDecode >>\nstream\n" + compressed_content + b"\nendstream\nendobj\n",
+    b"5 0 obj\n<< /Type /Font /Subtype /Type1 /BaseFont /Helvetica >>\nendobj\n",
+    b"xref\n0 6\n0000000000 65535 f \n0000000010 00000 n \n0000000060 00000 n \n0000000115 00000 n \n0000000234 00000 n \n" + 
+    (b"0000000" + str(334 + len(compressed_content)).encode() + b" 00000 n \n"),
+    b"trailer\n<< /Size 6 /Root 1 0 R >>\nstartxref\n" + str(400 + len(compressed_content)).encode() + b"\n%%EOF"
+]
+
+# Write PDF to file
+# Define paths relative to the script's location (resources/)
+script_dir = os.path.dirname(__file__)
+output_dir = os.path.join(script_dir, "brotli-test")
+output_path = os.path.join(output_dir, "brotli-compressed.pdf")
+
+# Ensure the output directory exists
+os.makedirs(output_dir, exist_ok=True)
+with open(output_path, "wb") as f:
+    for part in pdf:
+        f.write(part)
+
+print(f"Created test PDF with Brotli compression at: {output_path}")

resources/brotli-test/brotli-compressed.pdf

@@ -821,7 +821,7 @@ def test_main_decode_brotli_installed():
         pytest.skip("brotli library not installed")
 
     # Use the prototype PDF provided by PDF Association
-    pdf_path = RESOURCE_ROOT / "brotli-test" / "Brotli-Prototype-PDFs" / "Brotli-Prototype-FileA.pdf"
+    pdf_path = RESOURCE_ROOT / "brotli-test" / "brotli-compressed.pdf"
     if not pdf_path.exists():
         pytest.skip(f"Brotli test PDF not found at {pdf_path}")