gistfile1.txt

diff --git a/tempest/api/object_storage/test_object_temp_url_negative.py b/tempest/api/object_storage/test_object_temp_url_negative.py
index cf24f66..691553c 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -70,9 +70,6 @@ class ObjectTempUrlNegativeTest(base.BaseObjectTest):
         self.object_client.create_object(self.container_name,
                                          self.object_name, self.data)
 
-    def _get_expiry_date(self, expiration_time=1000):
-        return int(time.time() + expiration_time)
-
     def _get_temp_url(self, container, object_name, method, expires,
                       key):
         """Create the temporary URL."""
@@ -94,14 +91,19 @@ class ObjectTempUrlNegativeTest(base.BaseObjectTest):
     @test.requires_ext(extension='tempurl', service='object')
     def test_get_object_after_expiration_time(self):
 
-        expires = self._get_expiry_date(1)
+        test_timeout = time.time() + 20
+        expires = int(time.time() + 1.0)
         # get a temp URL for the created object
         url = self._get_temp_url(self.container_name,
                                  self.object_name, "GET",
                                  expires, self.key)
 
-        # temp URL is valid for 1 seconds, let's wait 2
-        time.sleep(2)
-
-        self.assertRaises(exceptions.Unauthorized,
-                          self.object_client.get, url)
+        passed = False
+        while time.time() < test_timeout:
+            try:
+                self.object_client.get(url)
+            except exceptions.Unauthorized:
+                passed = True  # expected value
+                break
+        if not passed:
+            self.assertTrue(False, 'Failed to expire the object in 20 seconds')