diff --git a/tests/functional/test_hydro_complete_year.py b/tests/functional/test_hydro_complete_year.py
index a12961f..4393f86 100644
--- a/tests/functional/test_hydro_complete_year.py
+++ b/tests/functional/test_hydro_complete_year.py
@@ -10,6 +10,7 @@
 #
 # This file is part of the Antares project.
 
+from pathlib import Path
 from typing import List, Tuple
 
 import numpy as np
@@ -32,7 +33,6 @@
     TimeSeriesData,
     create_component,
 )
-from pathlib import Path
 from tests.functional.libs.lib_hydro_heuristic import (
     HYDRO_MODEL,
     HYDRO_MODEL_WITH_TARGET,
diff --git a/tests/functional/test_hydro_infeasibilities_small_capacity.py b/tests/functional/test_hydro_infeasibilities_small_capacity.py
index dd336ce..96187d6 100644
--- a/tests/functional/test_hydro_infeasibilities_small_capacity.py
+++ b/tests/functional/test_hydro_infeasibilities_small_capacity.py
@@ -237,7 +237,7 @@ def get_database(
     initial_level = 0.5 * capacity
 
     data = HydroHeuristicData(
-        DataAggregatorParameters(list(range(8760)), list(range(8760))),
+        DataAggregatorParameters([1] * 8760, list(range(8760))),
         ReservoirParameters(capacity, initial_level, data_path, 0),
     )
     if inflow_data is None:
diff --git a/tests/functional/test_hydro_with_rulecurves.py b/tests/functional/test_hydro_with_rulecurves.py
index 092c42e..3e8fc69 100644
--- a/tests/functional/test_hydro_with_rulecurves.py
+++ b/tests/functional/test_hydro_with_rulecurves.py
@@ -169,12 +169,11 @@ def test_hydro_heuristic_daily_part(
 
 
 def test_complete_year_as_weekly_blocks_with_hydro_heuristic(
-    expected_weekly_target: List[float],
-    data_path:str
+    expected_weekly_target: List[float], data_path: str
 ) -> None:
     """Solve weekly problems with heuristic weekly targets for the stock."""
     database, network = create_database_and_network(
-        data_path,HYDRO_MODEL_WITH_TARGET, return_to_initial_level=False
+        data_path, HYDRO_MODEL_WITH_TARGET, return_to_initial_level=False
     )
 
     capacity = 1e07