Small changes to tests

stix2/base.py

@@ -260,7 +260,7 @@ class _STIXBase(collections.Mapping):
         Returns:
             str: The serialized JSON object.
 
-        Note:
+        Notes:
             The argument ``pretty=True`` will output the STIX object following
             spec order. Using this argument greatly impacts object serialization
             performance. If your use case is centered across machine-to-machine

stix2/test/v20/test_custom.py

@@ -853,7 +853,7 @@ def test_register_custom_object():
     class CustomObject2(object):
         _type = 'awesome-object'
 
-    stix2._register_object(CustomObject2, version="2.0")
+    stix2.core._register_object(CustomObject2, version="2.0")
     # Note that we will always check against newest OBJ_MAP.
     assert (CustomObject2._type, CustomObject2) in stix2.v20.OBJ_MAP.items()
 

stix2/test/v21/test_custom.py

@@ -857,7 +857,7 @@ def test_register_custom_object():
     class CustomObject2(object):
         _type = 'awesome-object'
 
-    stix2._register_object(CustomObject2, version="2.1")
+    stix2.core._register_object(CustomObject2, version="2.1")
     # Note that we will always check against newest OBJ_MAP.
     assert (CustomObject2._type, CustomObject2) in stix2.v21.OBJ_MAP.items()