diff --git a/services/director-v2/tests/unit/test_models_clusters.py b/services/director-v2/tests/unit/test_models_clusters.py
index b08a988fc68..ae0b17dd43e 100644
--- a/services/director-v2/tests/unit/test_models_clusters.py
+++ b/services/director-v2/tests/unit/test_models_clusters.py
@@ -1,52 +1,16 @@
-from pprint import pformat
-from typing import Any
-
-import pytest
 from faker import Faker
 from models_library.api_schemas_directorv2.clusters import (
     AvailableResources,
-    ClusterCreate,
-    ClusterPatch,
     Scheduler,
     UsedResources,
     Worker,
     WorkerMetrics,
 )
 from models_library.clusters import ClusterTypeInModel
-from pydantic import BaseModel, ByteSize, TypeAdapter
+from pydantic import ByteSize, TypeAdapter
 from simcore_postgres_database.models.clusters import ClusterType
 
 
-@pytest.mark.parametrize(
-    "model_cls",
-    [ClusterCreate, ClusterPatch],
-)
-def test_clusters_model_examples(
-    model_cls: type[BaseModel], model_cls_examples: dict[str, dict[str, Any]]
-):
-    for name, example in model_cls_examples.items():
-        print(name, ":", pformat(example))
-        model_instance = model_cls(**example)
-        assert model_instance, f"Failed with {name}"
-
-
-@pytest.mark.parametrize(
-    "model_cls",
-    [
-        ClusterCreate,
-    ],
-)
-def test_cluster_creation_brings_default_thumbail(
-    model_cls: type[BaseModel], model_cls_examples: dict[str, dict[str, Any]]
-):
-    for example in model_cls_examples.values():
-        if "thumbnail" in example:
-            example.pop("thumbnail")
-        instance = model_cls(**example)
-        assert instance
-        assert instance.thumbnail
-
-
 def test_scheduler_constructor_with_default_has_correct_dict(faker: Faker):
     scheduler = Scheduler(status=faker.text())
     assert scheduler.workers is not None
diff --git a/services/director-v2/tests/unit/test_modules_dask_clients_pool.py b/services/director-v2/tests/unit/test_modules_dask_clients_pool.py
index 17c8513083a..e53b1bed582 100644
--- a/services/director-v2/tests/unit/test_modules_dask_clients_pool.py
+++ b/services/director-v2/tests/unit/test_modules_dask_clients_pool.py
@@ -3,8 +3,9 @@
 # pylint:disable=redefined-outer-name
 
 
+from collections.abc import AsyncIterator, Callable
 from random import choice
-from typing import Any, AsyncIterator, Callable, get_args
+from typing import Any, get_args
 from unittest import mock
 
 import pytest
@@ -15,10 +16,8 @@
     Cluster,
     ClusterAuthentication,
     ClusterTypeInModel,
-    JupyterHubTokenAuthentication,
-    KerberosAuthentication,
     NoAuthentication,
-    SimpleAuthentication,
+    TLSAuthentication,
 )
 from pytest_mock.plugin import MockerFixture
 from pytest_simcore.helpers.typing_env import EnvVarsDict
@@ -82,7 +81,7 @@ def test_dask_clients_pool_properly_setup_and_deleted(
 def fake_clusters(faker: Faker) -> Callable[[int], list[Cluster]]:
     def creator(num_clusters: int) -> list[Cluster]:
         fake_clusters = []
-        for n in range(num_clusters):
+        for _n in range(num_clusters):
             fake_clusters.append(
                 Cluster.model_validate(
                     {
@@ -94,12 +93,11 @@ def creator(num_clusters: int) -> list[Cluster]:
                         "authentication": choice(
                             [
                                 NoAuthentication(),
-                                SimpleAuthentication(
-                                    username=faker.user_name(),
-                                    password=faker.password(),
+                                TLSAuthentication(
+                                    client_cert=faker.pystr(),
+                                    client_key=faker.pystr(),
+                                    ca_cert=faker.pystr(),
                                 ),
-                                KerberosAuthentication(),
-                                JupyterHubTokenAuthentication(api_token=faker.uuid4()),
                             ]
                         ),
                     }
@@ -155,6 +153,7 @@ async def test_dask_clients_pool_acquisition_creates_client_on_demand(
 
     clusters = fake_clusters(30)
     mocked_creation_calls = []
+    assert client.app
     for cluster in clusters:
         mocked_creation_calls.append(
             mock.call(