Avoid ResourceWarning: Implicitly cleaning up <addinfourl ...>

Close the urllib.response.addinfourl by using a context manager.

Without this:

    =================================== FAILURES ===================================
    _________________________________ test session _________________________________
    /usr/lib64/python3.14/tempfile.py:484: in __del__
        _warnings.warn(self.warn_message, ResourceWarning)
    E   ResourceWarning: Implicitly cleaning up <addinfourl at 281473371898608 whose fp = <http.client.HTTPResponse object at 0xffff9fe82470>>
    The above exception was the direct cause of the following exception:
    /usr/lib/python3.14/site-packages/_pytest/runner.py:344: in from_call
        result: TResult | None = func()
                                 ^^^^^^
    /usr/lib/python3.14/site-packages/_pytest/runner.py:246: in <lambda>
        lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    /usr/lib/python3.14/site-packages/pluggy/_hooks.py:512: in __call__
        return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    /usr/lib/python3.14/site-packages/pluggy/_manager.py:120: in _hookexec
        return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    /usr/lib/python3.14/site-packages/_pytest/logging.py:850: in pytest_runtest_call
        yield
    /usr/lib/python3.14/site-packages/_pytest/capture.py:900: in pytest_runtest_call
        return (yield)
                ^^^^^
    /usr/lib/python3.14/site-packages/_pytest/skipping.py:263: in pytest_runtest_call
        return (yield)
                ^^^^^
    /usr/lib/python3.14/site-packages/_pytest/unraisableexception.py:158: in pytest_runtest_call
        collect_unraisable(item.config)
    /usr/lib/python3.14/site-packages/_pytest/unraisableexception.py:79: in collect_unraisable
        raise errors[0]
    /usr/lib/python3.14/site-packages/_pytest/unraisableexception.py:67: in collect_unraisable
        warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
    E   pytest.PytestUnraisableExceptionWarning: Exception ignored while calling deallocator <function _TemporaryFileCloser.__del__ at 0xffffa6b34720>: None

CPython reference: python/cpython@bad3cde

Author: hroncok

html5lib/tests/test_stream.py

@@ -212,9 +212,9 @@ def makefile(self, _mode, _bufsize=None):
 
     source = http_client.HTTPResponse(FakeSocket())
     source.begin()
-    wrapped = urllib.response.addinfourl(source, source.msg, "http://example.com")
-    stream = HTMLInputStream(wrapped)
-    assert stream.charsUntil(" ") == "Text"
+    with urllib.response.addinfourl(source, source.msg, "http://example.com") as wrapped:
+        stream = HTMLInputStream(wrapped)
+        assert stream.charsUntil(" ") == "Text"
 
 
 @pytest.mark.parametrize("inp,num",