diff --git a/tests/ft/app/test_azure.py b/tests/ft/app/test_azure.py
index 377b5d733..036080fc7 100644
--- a/tests/ft/app/test_azure.py
+++ b/tests/ft/app/test_azure.py
@@ -123,6 +123,7 @@ def conf_base(mocker):
         "host": HUB,
         "auth": 0,
         "sas": SAS,
+        "ca": mocker.ca_base64,
     }
 
 
@@ -174,6 +175,13 @@ def conf_bad_fmt(conf_base):
     }
 
 
+@pytest.fixture(scope="function")
+def conf_no_ca(conf_base):
+    conf = {**conf_base}
+    del conf["ca"]
+    return conf
+
+
 @pytest.fixture(scope="function")
 def conf_ssl_bad_ca(conf_ssl):
     return {
@@ -230,6 +238,7 @@ class TestAzure:
             "conf_bad_id",
             "conf_bad_qos",
             "conf_bad_fmt",
+            "conf_no_ca",
             "conf_ssl_bad_ca",
             "conf_ssl_no_cert",
             "conf_ssl_bad_cert",
diff --git a/tests/ft/app/test_mqtt.py b/tests/ft/app/test_mqtt.py
index a1edd97a0..4b8da0081 100644
--- a/tests/ft/app/test_mqtt.py
+++ b/tests/ft/app/test_mqtt.py
@@ -71,7 +71,7 @@
 
 
 @pytest.fixture(autouse=True, scope="class")
-def mqtt_node():
+def mqtt_node(class_setup_and_teardown):
     otel_p = subprocess.Popen(
         ["python3", "otel_server.py", f'{otel_port}'], stderr=subprocess.PIPE, cwd="simulator")
     api.add_node_check(NODE, "MQTT")
@@ -184,6 +184,7 @@ def conf_emqx_ssl(conf_base, mocker):
         "host": "broker.emqx.io",
         "port": 8883,
         "ssl": True,
+        "ca": mocker.ca_base64,
     }
 
 
@@ -262,6 +263,15 @@ def conf_bad_fmt(conf_base):
     }
 
 
+@pytest.fixture(scope="function")
+def conf_ssl_no_ca(conf_base, mocker):
+    return {
+        **conf_base,
+        "port": mocker.ssl_port,
+        "ssl": True,
+    }
+
+
 @pytest.fixture(scope="function")
 def conf_ssl_bad_ca(conf_ssl1):
     return {
@@ -374,6 +384,7 @@ class TestMQTT:
             "conf_bad_id",
             "conf_bad_qos",
             "conf_bad_fmt",
+            "conf_ssl_no_ca",
             "conf_ssl_bad_ca",
             "conf_ssl_bad_cert",
             "conf_ssl_no_key",
diff --git a/tests/ft/conftest.py b/tests/ft/conftest.py
index da83e43fa..0b6bb0033 100644
--- a/tests/ft/conftest.py
+++ b/tests/ft/conftest.py
@@ -1,5 +1,11 @@
+import inspect
+
 import pytest
 
+import neuron.api as api
+import neuron.config as config
+import neuron.process as process
+
 
 def pytest_addoption(parser):
     parser.addoption(
@@ -10,3 +16,37 @@ def pytest_addoption(parser):
 @pytest.fixture(autouse=True, scope="session")
 def get_envx(request):
     return request.config.getoption("--env")
+
+
+def _refresh_default_jwt(token):
+    old_jwt = config.default_jwt
+    new_jwt = f"Bearer {token}"
+
+    config.default_jwt = new_jwt
+
+    for _, func in inspect.getmembers(api, inspect.isfunction):
+        defaults = func.__defaults__
+        if defaults:
+            func.__defaults__ = tuple(
+                new_jwt if value == old_jwt else value for value in defaults
+            )
+
+        kwdefaults = func.__kwdefaults__
+        if kwdefaults:
+            func.__kwdefaults__ = {
+                key: new_jwt if value == old_jwt else value
+                for key, value in kwdefaults.items()
+            }
+
+
+@pytest.fixture(autouse=True, scope="session")
+def init_default_jwt():
+    process.remove_persistence()
+    neuron = process.NeuronProcess()
+    neuron.start()
+
+    response = api.login()
+    assert 200 == response.status_code
+    _refresh_default_jwt(response.json()["token"])
+
+    neuron.stop()
diff --git a/tests/ft/group/test_group.py b/tests/ft/group/test_group.py
index c97ccb428..7c76d2696 100644
--- a/tests/ft/group/test_group.py
+++ b/tests/ft/group/test_group.py
@@ -48,7 +48,7 @@ def test_delete_group(self):
 
     @description(given="existent node", when="add group with interval < 100 under existent node", then="add failed")
     def test_add_group_wrong_interval(self):
-        response = api.add_group(node="modbus-tcp", group='group', interval=99)
+        response = api.add_group(node="modbus-tcp", group='group-bad-interval', interval=99)
         assert 400 == response.status_code
         assert NEU_ERR_GROUP_PARAMETER_INVALID == response.json()['error']