TestResponseParser.test_parser_response_leninent_headers_1 test failure

Start with tests/test_parser.py and run TestResponseParser.test_parser_response_leninent_headers_1 using the reported Python, http-parser, and llhttp versions. Trace why HttpParserError is not raised with the system-provided libraries; done means the test behavior is resolved or the compatibility expectation is made explicit.

Hello,

Builing httptools 0.6.4, I see:

=================================== FAILURES ===================================
__________ TestResponseParser.test_parser_response_leninent_headers_1 __________
Traceback (most recent call last):
  File "/gnu/store/jjcka1g6sk2cvwx8nm4fdwpdq3vll0v0-python-3.10.7/lib/python3.10/unittest/case.py", line 59, in testPartExecutor
    yield
  File "/gnu/store/jjcka1g6sk2cvwx8nm4fdwpdq3vll0v0-python-3.10.7/lib/python3.10/unittest/case.py", line 591, in run
    self._callTestMethod(testMethod)
  File "/gnu/store/jjcka1g6sk2cvwx8nm4fdwpdq3vll0v0-python-3.10.7/lib/python3.10/unittest/case.py", line 549, in _callTestMethod
    method()
  File "/tmp/guix-build-python-httptools-0.6.4.drv-0/source/tests/test_parser.py", line 132, in test_parser_response_leninent_headers_1
    with self.assertRaisesRegex(
  File "/gnu/store/jjcka1g6sk2cvwx8nm4fdwpdq3vll0v0-python-3.10.7/lib/python3.10/unittest/case.py", line 226, in __exit__
    self._raiseFailure("{} not raised".format(exc_name))
  File "/gnu/store/jjcka1g6sk2cvwx8nm4fdwpdq3vll0v0-python-3.10.7/lib/python3.10/unittest/case.py", line 163, in _raiseFailure
    raise self.test_case.failureException(msg)
AssertionError: HttpParserError not raised
=========================== short test summary info ============================
FAILED tests/test_parser.py::TestResponseParser::test_parser_response_leninent_headers_1 - AssertionError: HttpParserError not raised
========================= 1 failed, 39 passed in 0.08s =========================

This happens using the systemt-provided llhttp and http-parser libraries. Python is at 3.10.7, while the direct inputs are:

dependencies: http-parser@2.9.4-1.ec8b5ee llhttp@9.1.3 python-cython@0.29.32 python-pytest@8.3.3