gh-145259: Fix xml.dom.pulldom dropping events produced by parser.close()

Lib/test/test_pulldom.py

@@ -128,8 +128,13 @@ def test_expandItem(self):
         next(items) # Skip character data
         evt, node = next(items)
         self.assertEqual(node.tagName, "html")
-        with self.assertRaises(StopIteration):
-            next(items)
+        # Consume any remaining events (e.g. END_ELEMENT, END_DOCUMENT)
+        # that are now correctly delivered after the fix for parser.close()
+        remaining = list(items)
+        self.assertTrue(
+            any(evt == pulldom.END_DOCUMENT for evt, _ in remaining),
+            "Expected END_DOCUMENT in remaining events"
+        )
         items.clear()
         self.assertIsNone(items.parser)
         self.assertIsNone(items.stream)
@@ -144,9 +149,8 @@ def test_comment(self):
         else:
             self.fail("No comment was encountered")
 
-    @unittest.expectedFailure
     def test_end_document(self):
-        """PullDOM does not receive "end-document" events."""
+        """PullDOM receives end-document events."""
         items = pulldom.parseString(SMALL_SAMPLE)
         # Read all of the nodes up to and including </html>:
         for evt, node in items:

Lib/xml/dom/pulldom.py

@@ -249,6 +249,8 @@ def getEvent(self):
             buf = self.stream.read(self.bufsize)
             if not buf:
                 self.parser.close()
+                if self.pulldom.firstEvent[1]:
+                    break
                 return None
             self.parser.feed(buf)
         rc = self.pulldom.firstEvent[1][0]

Misc/NEWS.d/next/Library/2026-02-26-15-36-50.gh-issue-145259._SeM5N.rst

@@ -0,0 +1,4 @@
+Fix :class:`xml.dom.pulldom.DOMEventStream` silently dropping SAX events
+produced by ``parser.close()`` at end-of-stream. When ``bufsize`` caused the
+final tag to be split across reads, ``END_ELEMENT`` and other trailing events
+were lost.