diff --git a/ironic/tests/unit/drivers/modules/drac/test_power.py b/ironic/tests/unit/drivers/modules/drac/test_power.py
index b6ba3e159a..47819589cd 100644
--- a/ironic/tests/unit/drivers/modules/drac/test_power.py
+++ b/ironic/tests/unit/drivers/modules/drac/test_power.py
@@ -19,6 +19,7 @@ from unittest import mock
 
 from dracclient import constants as drac_constants
 from dracclient import exceptions as drac_exceptions
+from oslo_service import loopingcall
 
 from ironic.common import exception
 from ironic.common import states
@@ -69,8 +70,9 @@ class DracPowerTestCase(test_utils.BaseDracTest):
 
         mock_client.get_power_state.assert_called_once_with()
 
+    @mock.patch.object(loopingcall.BackOffLoopingCall, '_sleep', autospec=True)
     @mock.patch.object(drac_power.LOG, 'warning', autospec=True)
-    def test_set_power_state(self, mock_log, mock_get_drac_client):
+    def test_set_power_state(self, mock_log, mock_sleep, mock_get_drac_client):
         mock_client = mock_get_drac_client.return_value
         mock_client.get_power_state.side_effect = [drac_constants.POWER_ON,
                                                    drac_constants.POWER_OFF]
@@ -96,8 +98,10 @@ class DracPowerTestCase(test_utils.BaseDracTest):
         drac_power_state = drac_power.REVERSE_POWER_STATES[states.POWER_OFF]
         mock_client.set_power_state.assert_called_once_with(drac_power_state)
 
+    @mock.patch.object(loopingcall.BackOffLoopingCall, '_sleep', autospec=True)
     @mock.patch.object(drac_power.LOG, 'warning', autospec=True)
-    def test_set_power_state_timeout(self, mock_log, mock_get_drac_client):
+    def test_set_power_state_timeout(self, mock_log, mock_sleep,
+                                     mock_get_drac_client):
         mock_client = mock_get_drac_client.return_value
         mock_client.get_power_state.side_effect = [drac_constants.POWER_ON,
                                                    drac_constants.POWER_OFF]
diff --git a/ironic/tests/unit/drivers/modules/ibmc/test_utils.py b/ironic/tests/unit/drivers/modules/ibmc/test_utils.py
index eb21119b16..6b5a44c231 100644
--- a/ironic/tests/unit/drivers/modules/ibmc/test_utils.py
+++ b/ironic/tests/unit/drivers/modules/ibmc/test_utils.py
@@ -132,8 +132,9 @@ class IBMCUtilsTestCase(base.IBMCTestCase):
             "value2": "key2"
         }, revert)
 
+    @mock.patch('time.sleep', autospec=True)
     @mock.patch.object(ibmc_client, 'connect', spec=object)
-    def test_handle_ibmc_exception_retry(self, connect_ibmc):
+    def test_handle_ibmc_exception_retry(self, connect_ibmc, mock_sleep):
 
         @utils.handle_ibmc_exception('get IBMC system')
         def get_ibmc_system(_task):
diff --git a/ironic/tests/unit/drivers/modules/test_agent_client.py b/ironic/tests/unit/drivers/modules/test_agent_client.py
index 80351ed96c..5bf93c71b7 100644
--- a/ironic/tests/unit/drivers/modules/test_agent_client.py
+++ b/ironic/tests/unit/drivers/modules/test_agent_client.py
@@ -523,7 +523,8 @@ class TestAgentClient(base.TestCase):
         self.assertRaises(exception.InvalidParameterValue,
                           self.client._command, self.node, method, params)
 
-    def test__command_poll(self):
+    @mock.patch('time.sleep', autospec=True)
+    def test__command_poll(self, mock_sleep):
         response_data = {'status': 'ok'}
         final_status = MockCommandStatus('SUCCEEDED', name='run_image')
         self.client.session.post.return_value = MockResponse(response_data)
@@ -553,6 +554,7 @@ class TestAgentClient(base.TestCase):
             verify=True)
         self.client.session.get.assert_called_with(url, timeout=60,
                                                    verify=True)
+        mock_sleep.assert_called_with(CONF.agent.command_wait_interval)
 
     def test_get_commands_status(self):
         if not mock._is_instance_mock(self.client.session):