SDK-894: Update UNDEFINED ContentType handling

Author: echarrod

yoti_python_sdk/protobuf/protobuf.py

@@ -43,9 +43,7 @@ def anchor(data):
         return anchor
 
     def value_based_on_content_type(self, value, content_type=None):
-        if content_type == self.CT_UNDEFINED:
-            raise TypeError('Wrong content type')
-        elif content_type == self.CT_STRING:
+        if content_type == self.CT_STRING:
             return value.decode('utf-8')
         elif content_type == self.CT_DATE:
             return value.decode('utf-8')

yoti_python_sdk/tests/test_protobuf.py

@@ -14,8 +14,8 @@ def test_protobuf_value_based_on_content_type(proto):
     byte_value = str.encode(string_value)
     int_value = int(string_value)
 
-    with pytest.raises(TypeError):
-        proto.value_based_on_content_type(byte_value, proto.CT_UNDEFINED)
+    result = proto.value_based_on_content_type(byte_value, proto.CT_UNDEFINED)
+    assert result == string_value
 
     result = proto.value_based_on_content_type(byte_value, proto.CT_STRING)
     assert result == string_value