Enable the only tests for sys.gettrace
diff --git a/Lib/test/test_sys_settrace.py b/Lib/test/test_sys_settrace.py
index df8c56f..1f77f9b 100644
--- a/Lib/test/test_sys_settrace.py
+++ b/Lib/test/test_sys_settrace.py
@@ -282,11 +282,11 @@
         self.compare_events(func.func_code.co_firstlineno,
                             tracer.events, func.events)
 
-    def set_and_retrieve_none(self):
+    def test_set_and_retrieve_none(self):
         sys.settrace(None)
         assert sys.gettrace() is None
 
-    def set_and_retrieve_func(self):
+    def test_set_and_retrieve_func(self):
         def fn(*args):
             pass