chore(tests/integration): adapt lit tests to newer lit and pypdf

- lit.cfg.py: use lit's internal shell (the previous ShTest("0")
  call accidentally kept execute_external=True since "0" is
  truthy, which is now rejected by lit as deprecated).
- 20_fuzz_integration/test.itest: drop the inline
  PYTHONPATH=%project_root prefix, which lit's internal shell does
  not support; PYTHONPATH is already exported globally in
  lit.cfg.py.
- 40_sdoc_only_child_.../test.py: normalize the spacing pypdf now
  inserts around "/" in extracted page-number text (e.g. "3/4" ->
  "3 / 4"), matching the existing portability-replace() pattern.
- ruff.toml: ignore PLR0917 (too many arguments).

Author: claude

ruff.toml

@@ -72,6 +72,9 @@ ignore = [
     # Too many statements
     "PLR0915",
 
+    # Too many arguments
+    "PLR0917",
+
     # TBD: Enable: Use `sys.exit()` instead of `exit`
     "PLR1722",
 

tests/integration/20_fuzz_integration/test.itest

@@ -4,6 +4,6 @@
 RUN: mkdir -p %project_root/build/tests_integration_fuzz/
 RUN: cp -rv %project_root/tests/fuzz/01_strictdoc_guide_202510 %project_root/build/tests_integration_fuzz/
 
-RUN: PYTHONPATH=%project_root python -m html2pdf4doc.main_fuzzer %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510/strictdoc/docs/strictdoc_01_user_guide-PDF.html %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510 %T/ --total-mutations 1 --mutations=random | filecheck %s --dump-input=fail
-RUN: PYTHONPATH=%project_root python -m html2pdf4doc.main_fuzzer %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510/strictdoc/docs/strictdoc_01_user_guide-PDF.html %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510 %T/ --total-mutations 1 --mutations=incremental | filecheck %s --dump-input=fail
+RUN: python -m html2pdf4doc.main_fuzzer %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510/strictdoc/docs/strictdoc_01_user_guide-PDF.html %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510 %T/ --total-mutations 1 --mutations=random | filecheck %s --dump-input=fail
+RUN: python -m html2pdf4doc.main_fuzzer %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510/strictdoc/docs/strictdoc_01_user_guide-PDF.html %project_root/build/tests_integration_fuzz/01_strictdoc_guide_202510 %T/ --total-mutations 1 --mutations=incremental | filecheck %s --dump-input=fail
 CHECK: html2pdf4doc_fuzzer: finished ✅ — Success rate: 1/1 (100.0%)

tests/integration/40_sdoc_only_child_does_not_break_page_when_surrounded_by_text_nodes/test.py

@@ -14,7 +14,10 @@
 #
 
 page2_text_normalized = (
-    reader.pages[2].extract_text().replace("leo.StrictDoc", "leo.\nStrictDoc")
+    reader.pages[2]
+    .extract_text()
+    .replace("leo.StrictDoc", "leo.\nStrictDoc")
+    .replace("3 / 4", "3/4")
 )
 assert (
     page2_text_normalized
@@ -28,7 +31,10 @@
 ), page2_text_normalized
 
 page3_text_normalized = (
-    reader.pages[3].extract_text().replace("cStrictDoc", "c\nStrictDoc")
+    reader.pages[3]
+    .extract_text()
+    .replace("cStrictDoc", "c\nStrictDoc")
+    .replace("4 / 4", "4/4")
 )
 
 assert (

tests/integration/lit.cfg.py

@@ -7,7 +7,7 @@
 lit_config: Any
 
 config.name = "html2pdf4doc Python API integration tests"
-config.test_format = lit.formats.ShTest("0")
+config.test_format = lit.formats.ShTest()
 
 current_dir = os.getcwd().replace("\\", "/")