diff --git a/tests/interface/conftest.py b/tests/interface/conftest.py
new file mode 100644
index 0000000..1118a91
--- /dev/null
+++ b/tests/interface/conftest.py
@@ -0,0 +1,41 @@
+import tempfile
+
+import pytest
+import scenario
+from interface_tester import InterfaceTester
+from ops.pebble import Layer, ServiceStatus
+
+from charm import NRFOperatorCharm
+
+
+@pytest.fixture
+def interface_tester(interface_tester: InterfaceTester):
+    with tempfile.TemporaryDirectory() as tempdir:
+        config_mount = scenario.Mount(
+            location="/etc/nrf/",
+            src=tempdir,
+        )
+        certs_mount = scenario.Mount(
+            location="/support/TLS/",
+            src=tempdir,
+        )
+        container = scenario.Container(
+            name="nrf",
+            can_connect=True,
+            layers={"nrf": Layer({"services": {"nrf": {}}})},
+            service_status={
+                "nrf": ServiceStatus.ACTIVE,
+            },
+            mounts={
+                "config": config_mount,
+                "certs": certs_mount,
+            },
+        )
+        interface_tester.configure(
+            charm_type=NRFOperatorCharm,
+            state_template=scenario.State(
+                leader=True,
+                containers=[container],
+            ),
+        )
+        yield interface_tester
diff --git a/tox.ini b/tox.ini
index 2834ebd..c2b5a79 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,10 +8,11 @@ envlist = lint, static, unit
 
 [vars]
 src_path = {toxinidir}/src/
+interface_test_path = {toxinidir}/tests/interface/
 unit_test_path = {toxinidir}/tests/unit/
 integration_test_path = {toxinidir}/tests/integration/
 lib_path = {toxinidir}/lib/charms/sdcore_nrf_k8s/v0/
-all_path = {[vars]src_path} {[vars]unit_test_path} {[vars]integration_test_path} {[vars]lib_path}
+all_path = {[vars]src_path} {[vars]unit_test_path} {[vars]integration_test_path} {[vars]lib_path} {[vars]interface_test_path}
 
 [testenv]
 setenv =