diff --git a/tests/ft/app/test_mqtt.py b/tests/ft/app/test_mqtt.py
index 651afdef..897ab872 100644
--- a/tests/ft/app/test_mqtt.py
+++ b/tests/ft/app/test_mqtt.py
@@ -1,4 +1,3 @@
-from base64 import b64encode
 import time
 
 import pytest
@@ -97,11 +96,6 @@ def mocker():
     mock.done()
 
 
-def base64(file):
-    with open(file, "rb") as f:
-        return b64encode(f.read()).decode("utf-8")
-
-
 @pytest.fixture(scope="function")
 def conf_base(mocker):
     return {
@@ -140,7 +134,7 @@ def conf_ssl1(conf_base, mocker):
         **conf_base,
         "port": mocker.ssl_port,
         "ssl": True,
-        "ca": base64(mocker.ca),
+        "ca": mocker.ca_base64,
     }
 
 
@@ -148,8 +142,8 @@ def conf_ssl1(conf_base, mocker):
 def conf_ssl2(conf_ssl1, mocker):
     return {
         **conf_ssl1,
-        "cert": base64(mocker.client_cert),
-        "key": base64(mocker.client_key),
+        "cert": mocker.client_cert_base64,
+        "key": mocker.client_key_base64,
     }
 
 
@@ -161,9 +155,9 @@ def conf_user_ssl(conf_base, mocker):
         "password": mocker.password,
         "port": mocker.ssl_port,
         "ssl": True,
-        "ca": base64(mocker.ca),
-        "cert": base64(mocker.client_cert),
-        "key": base64(mocker.client_key),
+        "ca": mocker.ca_base64,
+        "cert": mocker.client_cert_base64,
+        "key": mocker.client_key_base64,
     }
 
 
@@ -254,7 +248,7 @@ def conf_ssl_bad_cert(conf_ssl1):
 def conf_ssl_no_key(conf_ssl1, mocker):
     return {
         **conf_ssl1,
-        "cert": base64(mocker.client_cert),
+        "cert": mocker.client_cert_base64
     }
 
 
diff --git a/tests/ft/neuron/data/__init__.py b/tests/ft/neuron/data/__init__.py
new file mode 100644
index 00000000..582d2677
--- /dev/null
+++ b/tests/ft/neuron/data/__init__.py
@@ -0,0 +1,20 @@
+from base64 import b64encode
+import pathlib
+
+
+def base64(file):
+    with open(file, "rb") as f:
+        return b64encode(f.read()).decode("utf-8")
+
+
+data_dir = pathlib.Path(__file__).resolve().parent
+ca = str(data_dir / "ca.pem")
+ca_base64 = base64(ca)
+server_cert = str(data_dir / "server.pem")
+server_cert_base64 = base64(server_cert)
+server_key = str(data_dir / "server.key")
+server_key_base64 = base64(server_key)
+client_cert = str(data_dir / "client.pem")
+client_cert_base64 = base64(client_cert)
+client_key = str(data_dir / "client.key")
+client_key_base64 = base64(client_key)
diff --git a/tests/ft/neuron/mqtt/ca.pem b/tests/ft/neuron/data/ca.pem
similarity index 100%
rename from tests/ft/neuron/mqtt/ca.pem
rename to tests/ft/neuron/data/ca.pem
diff --git a/tests/ft/neuron/mqtt/client.key b/tests/ft/neuron/data/client.key
similarity index 100%
rename from tests/ft/neuron/mqtt/client.key
rename to tests/ft/neuron/data/client.key
diff --git a/tests/ft/neuron/mqtt/client.pem b/tests/ft/neuron/data/client.pem
similarity index 100%
rename from tests/ft/neuron/mqtt/client.pem
rename to tests/ft/neuron/data/client.pem
diff --git a/tests/ft/neuron/mqtt/broker.key b/tests/ft/neuron/data/server.key
similarity index 100%
rename from tests/ft/neuron/mqtt/broker.key
rename to tests/ft/neuron/data/server.key
diff --git a/tests/ft/neuron/mqtt/broker.pem b/tests/ft/neuron/data/server.pem
similarity index 100%
rename from tests/ft/neuron/mqtt/broker.pem
rename to tests/ft/neuron/data/server.pem
diff --git a/tests/ft/neuron/mqtt/__init__.py b/tests/ft/neuron/mqtt/__init__.py
index 5867f882..89596915 100644
--- a/tests/ft/neuron/mqtt/__init__.py
+++ b/tests/ft/neuron/mqtt/__init__.py
@@ -4,6 +4,7 @@ import random
 import string
 import time
 
+from neuron import data
 from neuron.mqtt.client import Client
 from neuron.mqtt.broker import Broker
 
@@ -23,12 +24,16 @@ class Mock:
         self.user = user
         self.password = password
 
-        data_dir = pathlib.Path(__file__).resolve().parent
-        self.ca = str(data_dir / "ca.pem")
-        self.broker_cert = str(data_dir / "broker.pem")
-        self.broker_key = str(data_dir / "broker.key")
-        self.client_cert = str(data_dir / "client.pem")
-        self.client_key = str(data_dir / "client.key")
+        self.ca = data.ca
+        self.ca_base64 = data.ca_base64
+        self.broker_cert = data.server_cert
+        self.broker_cert_base64 = data.server_cert_base64
+        self.broker_key = data.server_key
+        self.broker_key_base64 = data.server_key_base64
+        self.client_cert = data.client_cert
+        self.client_cert_base64 = data.client_cert_base64
+        self.client_key = data.client_key
+        self.client_key_base64 = data.client_key_base64
 
         self.broker = Broker(
             port=port,
diff --git a/tests/ft/setup.py b/tests/ft/setup.py
index 92049884..f4995c2e 100644
--- a/tests/ft/setup.py
+++ b/tests/ft/setup.py
@@ -10,5 +10,5 @@ setup(
     author="Neuron Team",
     author_email="neuron@emqx.io",
     packages=packages,
-    package_data={"neuron.mqtt": ["*.key", "*.pem"]},
+    package_data={"neuron.data": ["*.key", "*.pem"]},
 )