added tests for obscure year inputs to parsedate_to_datetime

Lib/test/test_email/test_parsedate_to_datetime.py

@@ -0,0 +1,17 @@
+# Test to see if parsedate_to_datetime returns the correct year for different digit numbers, adhering to the RFC2822 spec
+
+import unittest
+from email.utils import parsedate_to_datetime
+
+class ParsedateToDatetimeTest(unittest.TestCase):
+    def test(self):
+        expectations = {
+            "Sat, 15 Aug 0001 23:12:09 +0500": "0001",
+            "Thu, 1 Sep 1 23:12:09 +0800": "0001",
+            "Thu, 7 Oct 123 23:12:09 +0500": "0123",
+        }
+        for input_string, output_string in expectations.items():
+            self.assertEqual(str(parsedate_to_datetime(input_string))[:4], output_string)
+
+if __name__ == '__main__':
+    unittest.main()