fix: add AppHandler.load_object() method

tests/test_app.py

@@ -11,6 +11,7 @@ import pytest
 
 from wuttjamaican import app
 from wuttjamaican.conf import WuttaConfig
+from wuttjamaican.util import UNSPECIFIED
 
 
 class TestAppHandler(TestCase):
@@ -25,6 +26,13 @@ class TestAppHandler(TestCase):
         self.assertEqual(self.app.handlers, {})
         self.assertEqual(self.app.appname, 'wuttatest')
 
+    def test_load_object(self):
+
+        # just confirm the method works on a basic level; the
+        # underlying function is tested elsewhere
+        obj = self.app.load_object('wuttjamaican.util:UNSPECIFIED')
+        self.assertIs(obj, UNSPECIFIED)
+
     def test_make_appdir(self):
 
         # appdir is created, and 3 subfolders added by default