Deserialize unkwon enum value as string

msrest/serialization.py

@@ -1279,7 +1279,8 @@ class Deserializer(object):
             return self.deserialize_unicode(attr)
         return eval(data_type)(attr)
 
-    def deserialize_unicode(self, data):
+    @staticmethod
+    def deserialize_unicode(data):
         """Preserve unicode objects in Python 2, otherwise return data
         as a string.
 
@@ -1327,8 +1328,9 @@ class Deserializer(object):
             for enum_value in enum_obj:
                 if enum_value.value.lower() == str(data).lower():
                     return enum_value
-            error = "{!r} is not valid value for enum {!r}"
-            raise DeserializationError(error.format(data, enum_obj))
+            # We don't fail anymore for unknown value, we deserialize as a string
+            _LOGGER.warning("Deserializer is not able to find %s as valid enum in %s", data, enum_obj)
+            return Deserializer.deserialize_unicode(data)
 
     @staticmethod
     def deserialize_bytearray(attr):

tests/test_serialization.py

@@ -2178,6 +2178,12 @@ class TestRuntimeDeserialized(unittest.TestCase):
 
         self.assertEquals(obj.abc, TestEnum.val)
 
+        obj = deserializer('TestEnumObj', {
+            'ABC': 'azerty'
+        })
+
+        self.assertEquals(obj.abc, 'azerty')
+
         class TestEnum2(Enum):
             val2 = "Value"