diff --git a/Lib/test/test_profilehooks.py b/Lib/test/test_profilehooks.py
index 53f882a..2eedfd9 100644
--- a/Lib/test/test_profilehooks.py
+++ b/Lib/test/test_profilehooks.py
@@ -4,6 +4,22 @@
 
 from test import test_support
 
+class TestGetProfile(unittest.TestCase):
+    def setUp(self):
+        sys.setprofile(None)
+
+    def tearDown(self):
+        sys.setprofile(None)
+
+    def test_empty(self):
+        assert sys.getprofile() == None
+
+    def test_setget(self):
+        def fn(*args):
+            pass
+
+        sys.setprofile(fn)
+        assert sys.getprofile() == fn
 
 class HookWatcher:
     def __init__(self):
@@ -359,6 +375,7 @@
 
 def test_main():
     test_support.run_unittest(
+        TestGetProfile,
         ProfileHookTestCase,
         ProfileSimulatorTestCase
     )
diff --git a/Lib/test/test_trace.py b/Lib/test/test_trace.py
index 230f7bb..144fc66 100644
--- a/Lib/test/test_trace.py
+++ b/Lib/test/test_trace.py
@@ -268,6 +268,20 @@
         self.compare_events(func.func_code.co_firstlineno,
                             tracer.events, func.events)
 
+    def set_and_retrieve_none(self):
+        sys.settrace(None)
+        assert sys.gettrace() is None
+
+    def set_and_retrieve_func(self):
+        def fn(*args):
+            pass
+
+        sys.settrace(fn)
+        try:
+            assert sys.gettrace() is fn
+        finally:
+            sys.settrace(None)
+
     def test_01_basic(self):
         self.run_test(basic)
     def test_02_arigo(self):