diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_xml_etree.py | 20 | ||||
| -rw-r--r-- | Lib/xml/etree/ElementTree.py | 5 |
2 files changed, 23 insertions, 2 deletions
diff --git a/Lib/test/test_xml_etree.py b/Lib/test/test_xml_etree.py index ee3154e..ca5bb56 100644 --- a/Lib/test/test_xml_etree.py +++ b/Lib/test/test_xml_etree.py @@ -3957,6 +3957,25 @@ class NoAcceleratorTest(unittest.TestCase): self.assertIsInstance(pyET.Element.__init__, types.FunctionType) self.assertIsInstance(pyET.XMLParser.__init__, types.FunctionType) +# -------------------------------------------------------------------- + +class BoolTest(unittest.TestCase): + def test_warning(self): + e = ET.fromstring('<a style="new"></a>') + msg = ( + r"Testing an element's truth value will raise an exception in " + r"future versions. " + r"Use specific 'len\(elem\)' or 'elem is not None' test instead.") + with self.assertWarnsRegex(DeprecationWarning, msg): + result = bool(e) + # Emulate prior behavior for now + self.assertIs(result, False) + + # Element with children + ET.SubElement(e, 'b') + with self.assertWarnsRegex(DeprecationWarning, msg): + new_result = bool(e) + self.assertIs(new_result, True) # -------------------------------------------------------------------- @@ -4223,6 +4242,7 @@ def test_main(module=None): XMLPullParserTest, BugsTest, KeywordArgsTest, + BoolTest, C14NTest, ] diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py index df5d519..42574ee 100644 --- a/Lib/xml/etree/ElementTree.py +++ b/Lib/xml/etree/ElementTree.py @@ -200,9 +200,10 @@ class Element: def __bool__(self): warnings.warn( - "The behavior of this method will change in future versions. " + "Testing an element's truth value will raise an exception in " + "future versions. " "Use specific 'len(elem)' or 'elem is not None' test instead.", - FutureWarning, stacklevel=2 + DeprecationWarning, stacklevel=2 ) return len(self._children) != 0 # emulate old behaviour, for now |