Add partial supprot for xs:date AttributeValue type

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

Author: c00kiemon5ter

src/saml2/saml.py

@@ -15,6 +15,8 @@
 
 
 import base64
+from datetime import date
+from datetime import datetime
 
 from saml2.validate import valid_ipv4, MustValueError
 from saml2.validate import valid_ipv6
@@ -307,6 +309,11 @@ def _wrong_type_value(xsd, value):
                 }[str(x).lower()],
                 'to_text': lambda x: str(x).lower(),
             },
+            'date': {
+                'type': date,
+                'to_type': lambda x: datetime.strptime(x, '%Y-%m-%d').date(),
+                'to_text': str,
+            },
             'base64Binary': {
                 'type': str,
                 'to_type': str,

tests/test_02_saml.py

@@ -276,6 +276,16 @@ def test_set_xs_type_anytype_unchanged_value(self):
             # the value is unchanged
             assert av.text == value
 
+    def test_set_xs_type_date(self):
+        _type_name = 'xs:date'
+        _value = '2022-06-07'
+        av = AttributeValue()
+        av.set_type(_type_name)
+        av.set_text(_value)
+        assert av.get_type() == _type_name
+        assert av.text == _value
+        assert type(av.text) is str
+
     def test_treat_invalid_types_as_string(self):
         _type_name = 'invalid-type'
         _value = 'foobar'