diff --git a/tmuxp/testsuite/helpers.py b/tmuxp/testsuite/helpers.py
index b9c02544b3c..0b588bb981e 100644
--- a/tmuxp/testsuite/helpers.py
+++ b/tmuxp/testsuite/helpers.py
@@ -39,12 +39,14 @@ class TmuxTestCase(TestCase):
     #: Session name for the TestCase.
     TEST_SESSION_NAME = None
 
-    def setUp(self):
+    @classmethod
+    def setUpClass(cls):
         """Run bootstrap if :attr:`~.session` is not set."""
-        if not self.TEST_SESSION_NAME or not self.session:
-            self.bootstrap()
+        if not cls.TEST_SESSION_NAME or not cls.session:
+            cls.bootstrap()
 
-    def bootstrap(self):
+    @classmethod
+    def bootstrap(cls):
         """Return tuple of the session_name (generated) and :class:`Session`.
 
         Checks to verify if the user has a tmux client open.
@@ -95,7 +97,7 @@ def bootstrap(self):
             t.switch_client(session.get('session_id'))
             pass
         except exc.TmuxpException as e:
-            #t.attach_session(session.get('session_id'))
+            # t.attach_session(session.get('session_id'))
             pass
 
         for old_test_session in old_test_sessions:
@@ -107,5 +109,5 @@ def bootstrap(self):
         assert TEST_SESSION_NAME == session.get('session_name')
         assert TEST_SESSION_NAME != 'tmuxp'
 
-        self.TEST_SESSION_NAME = TEST_SESSION_NAME
-        self.session = session
+        cls.TEST_SESSION_NAME = TEST_SESSION_NAME
+        cls.session = session