Add dateutil library

resources/lib/libraries/dateutil/test/property/test_parser_prop.py

@@ -0,0 +1,22 @@
+from hypothesis.strategies import integers
+from hypothesis import given
+
+import pytest
+
+from dateutil.parser import parserinfo
+
+
+@pytest.mark.parserinfo
+@given(integers(min_value=100, max_value=9999))
+def test_convertyear(n):
+    assert n == parserinfo().convertyear(n)
+
+
+@pytest.mark.parserinfo
+@given(integers(min_value=-50,
+                max_value=49))
+def test_convertyear_no_specified_century(n):
+    p = parserinfo()
+    new_year = p._year + n
+    result = p.convertyear(new_year % 100, century_specified=False)
+    assert result == new_year