chore(test): Increase test coverage across multiple modules

Author: holtskinner

.github/actions/spelling/allow.txt

@@ -29,12 +29,14 @@ coro
 datamodel
 dunders
 genai
+getkwargs
 gle
 inmemory
 kwarg
 langgraph
 lifecycles
 linting
+lstrips
 oauthoidc
 opensource
 protoc
@@ -43,4 +45,6 @@ pyversions
 socio
 sse
 tagwords
+taskupdate
+testuuid
 vulnz

tests/auth/test_user.py

@@ -0,0 +1,17 @@
+import unittest
+
+from a2a.auth.user import UnauthenticatedUser
+
+
+class TestUnauthenticatedUser(unittest.TestCase):
+    def test_is_authenticated_returns_false(self):
+        user = UnauthenticatedUser()
+        self.assertFalse(user.is_authenticated)
+
+    def test_user_name_returns_empty_string(self):
+        user = UnauthenticatedUser()
+        self.assertEqual(user.user_name, '')
+
+
+if __name__ == '__main__':
+    unittest.main()