diff --git a/taskflow/tests/unit/test_types.py b/taskflow/tests/unit/test_types.py
index 5e5b074d..e69cac0d 100644
--- a/taskflow/tests/unit/test_types.py
+++ b/taskflow/tests/unit/test_types.py
@@ -14,12 +14,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import time
+
 import networkx as nx
 
-from taskflow.types import graph
-from taskflow.types import tree
-
 from taskflow import test
+from taskflow.types import graph
+from taskflow.types import time as tt
+from taskflow.types import tree
 
 
 class GraphTest(test.TestCase):
@@ -113,3 +115,44 @@ class TreeTest(test.TestCase):
         things = list([n.item for n in root.dfs_iter(include_self=True)])
         self.assertEqual(set(['animal', 'reptile', 'mammal', 'horse',
                               'primate', 'monkey', 'human']), set(things))
+
+
+class StopWatchUtilsTest(test.TestCase):
+    def test_no_states(self):
+        watch = tt.StopWatch()
+        self.assertRaises(RuntimeError, watch.stop)
+        self.assertRaises(RuntimeError, watch.resume)
+
+    def test_expiry(self):
+        watch = tt.StopWatch(0.1)
+        watch.start()
+        time.sleep(0.2)
+        self.assertTrue(watch.expired())
+
+    def test_no_expiry(self):
+        watch = tt.StopWatch(0.1)
+        watch.start()
+        self.assertFalse(watch.expired())
+
+    def test_elapsed(self):
+        watch = tt.StopWatch()
+        watch.start()
+        time.sleep(0.2)
+        # NOTE(harlowja): Allow for a slight variation by using 0.19.
+        self.assertGreaterEqual(0.19, watch.elapsed())
+
+    def test_pause_resume(self):
+        watch = tt.StopWatch()
+        watch.start()
+        time.sleep(0.05)
+        watch.stop()
+        elapsed = watch.elapsed()
+        time.sleep(0.05)
+        self.assertAlmostEqual(elapsed, watch.elapsed())
+        watch.resume()
+        self.assertNotEqual(elapsed, watch.elapsed())
+
+    def test_context_manager(self):
+        with tt.StopWatch() as watch:
+            time.sleep(0.05)
+        self.assertGreater(0.01, watch.elapsed())
diff --git a/taskflow/tests/unit/test_utils.py b/taskflow/tests/unit/test_utils.py
index 2c2dac2d..22da1b8b 100644
--- a/taskflow/tests/unit/test_utils.py
+++ b/taskflow/tests/unit/test_utils.py
@@ -18,12 +18,10 @@ import collections
 import functools
 import inspect
 import sys
-import time
 
 from taskflow import states
 from taskflow import test
 from taskflow.tests import utils as test_utils
-from taskflow.types import time as tt
 from taskflow.utils import lock_utils
 from taskflow.utils import misc
 from taskflow.utils import reflection
@@ -495,47 +493,6 @@ class IsValidAttributeNameTestCase(test.TestCase):
         self.assertFalse(misc.is_valid_attribute_name('mañana'))
 
 
-class StopWatchUtilsTest(test.TestCase):
-    def test_no_states(self):
-        watch = tt.StopWatch()
-        self.assertRaises(RuntimeError, watch.stop)
-        self.assertRaises(RuntimeError, watch.resume)
-
-    def test_expiry(self):
-        watch = tt.StopWatch(0.1)
-        watch.start()
-        time.sleep(0.2)
-        self.assertTrue(watch.expired())
-
-    def test_no_expiry(self):
-        watch = tt.StopWatch(0.1)
-        watch.start()
-        self.assertFalse(watch.expired())
-
-    def test_elapsed(self):
-        watch = tt.StopWatch()
-        watch.start()
-        time.sleep(0.2)
-        # NOTE(harlowja): Allow for a slight variation by using 0.19.
-        self.assertGreaterEqual(0.19, watch.elapsed())
-
-    def test_pause_resume(self):
-        watch = tt.StopWatch()
-        watch.start()
-        time.sleep(0.05)
-        watch.stop()
-        elapsed = watch.elapsed()
-        time.sleep(0.05)
-        self.assertAlmostEqual(elapsed, watch.elapsed())
-        watch.resume()
-        self.assertNotEqual(elapsed, watch.elapsed())
-
-    def test_context_manager(self):
-        with tt.StopWatch() as watch:
-            time.sleep(0.05)
-        self.assertGreater(0.01, watch.elapsed())
-
-
 class UriParseTest(test.TestCase):
     def test_parse(self):
         url = "zookeeper://192.168.0.1:2181/a/b/?c=d"