#13760: picklability tests for configparser exceptions

Lib/test/test_cfgparser.py

@@ -1474,6 +1474,150 @@ class CoverageOneHundredTestCase(unittest.TestCase):
         """)
         self.assertEqual(repr(parser['section']), '<Section: section>')
 
+
+class ExceptionPicklingTestCase(unittest.TestCase):
+    """Tests for issue #13760: ConfigParser exceptions are not picklable."""
+
+    def test_error(self):
+        import pickle
+        e1 = configparser.Error('value')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_nosectionerror(self):
+        import pickle
+        e1 = configparser.NoSectionError('section')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_nooptionerror(self):
+        import pickle
+        e1 = configparser.NoOptionError('option', 'section')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.option, e2.option)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_duplicatesectionerror(self):
+        import pickle
+        e1 = configparser.DuplicateSectionError('section', 'source', 123)
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.source, e2.source)
+        self.assertEqual(e1.lineno, e2.lineno)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_duplicateoptionerror(self):
+        import pickle
+        e1 = configparser.DuplicateOptionError('section', 'option', 'source',
+            123)
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.option, e2.option)
+        self.assertEqual(e1.source, e2.source)
+        self.assertEqual(e1.lineno, e2.lineno)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_interpolationerror(self):
+        import pickle
+        e1 = configparser.InterpolationError('option', 'section', 'msg')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.option, e2.option)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_interpolationmissingoptionerror(self):
+        import pickle
+        e1 = configparser.InterpolationMissingOptionError('option', 'section',
+            'rawval', 'reference')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.option, e2.option)
+        self.assertEqual(e1.reference, e2.reference)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_interpolationsyntaxerror(self):
+        import pickle
+        e1 = configparser.InterpolationSyntaxError('option', 'section', 'msg')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.option, e2.option)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_interpolationdeptherror(self):
+        import pickle
+        e1 = configparser.InterpolationDepthError('option', 'section',
+            'rawval')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.section, e2.section)
+        self.assertEqual(e1.option, e2.option)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_parsingerror(self):
+        import pickle
+        e1 = configparser.ParsingError('source')
+        e1.append(1, 'line1')
+        e1.append(2, 'line2')
+        e1.append(3, 'line3')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.source, e2.source)
+        self.assertEqual(e1.errors, e2.errors)
+        self.assertEqual(repr(e1), repr(e2))
+        e1 = configparser.ParsingError(filename='filename')
+        e1.append(1, 'line1')
+        e1.append(2, 'line2')
+        e1.append(3, 'line3')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.source, e2.source)
+        self.assertEqual(e1.errors, e2.errors)
+        self.assertEqual(repr(e1), repr(e2))
+
+    def test_missingsectionheadererror(self):
+        import pickle
+        e1 = configparser.MissingSectionHeaderError('filename', 123, 'line')
+        pickled = pickle.dumps(e1)
+        e2 = pickle.loads(pickled)
+        self.assertEqual(e1.message, e2.message)
+        self.assertEqual(e1.args, e2.args)
+        self.assertEqual(e1.line, e2.line)
+        self.assertEqual(e1.source, e2.source)
+        self.assertEqual(e1.lineno, e2.lineno)
+        self.assertEqual(repr(e1), repr(e2))
+
+
 def test_main():
     support.run_unittest(
         ConfigParserTestCase,
@@ -1495,4 +1639,5 @@ def test_main():
         ConfigParserTestCaseNonStandardDefaultSection,
         ReadFileTestCase,
         CoverageOneHundredTestCase,
+        ExceptionPicklingTestCase,
         )