Issue #6676: Ensure a meaningful exception is raised when attempting

to parse more than one XML document per pyexpat xmlparser instance.
(Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with
suggested wording by David Gutteridge)

1 files changed, 12 insertions, 0 deletions

diff --git a/Lib/test/test_pyexpat.py b/Lib/test/test_pyexpat.py
index 8ef391791f..95a614bb9b 100644
--- a/Lib/test/test_pyexpat.py
+++ b/Lib/test/test_pyexpat.py
@@ -236,6 +236,18 @@ class ParseTest(unittest.TestCase):
         operations = out.out
         self._verify_parse_output(operations)
 
+    def test_parse_again(self):
+        parser = expat.ParserCreate()
+        file = BytesIO(data)
+        parser.ParseFile(file)
+        # Issue 6676: ensure a meaningful exception is raised when attempting
+        # to parse more than one XML document per xmlparser instance,
+        # a limitation of the Expat library.
+        with self.assertRaises(expat.error) as cm:
+            parser.ParseFile(file)
+        self.assertEqual(expat.ErrorString(cm.exception.code),
+                          expat.errors.XML_ERROR_FINISHED)
+
 class NamespaceSeparatorTest(unittest.TestCase):
     def test_legal(self):
         # Tests that make sure we get errors when the namespace_separator value