diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
old mode 100644
new mode 100755
index 810a4511f1d340420188461d419905891f557139..2d274bcef8e9405ff8b8ab3320f02f0596a6a359
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -58,13 +58,20 @@ add_test(NAME resolution_unitest
   "${OUTPUT_TEST_UNITEST}/resolution"
     )
 
-add_test(NAME gdal_wrappers_unitest.py
+add_test(NAME gdal_wrappers_unitest
   COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/gdal_wrappers_test.py
   "${DATA_TEST}/S2/"
   "${UNIT_TEST}/"
   "${OUTPUT_TEST_UNITEST}/gdal_wrappers/"
     )
 
+add_test(NAME fsc_config_unitest
+  COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/fsc_config_test.py
+  "${DATA_TEST}/S2/"
+  "${UNIT_TEST}/"
+  "${OUTPUT_TEST_UNITEST}/fsc_config" 
+    )
+
 #add_test(NAME snow_synthesis_unitest
 #  COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/snow_synthesis_test.py
 #  "${OUTPUT_TEST_SYNTHESIS}"
diff --git a/test/fsc_config_test.py b/test/fsc_config_test.py
new file mode 100755
index 0000000000000000000000000000000000000000..2f19020b6f8e2e31273fe30522e105e886ccfb75
--- /dev/null
+++ b/test/fsc_config_test.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2005-2019 Centre National d'Etudes Spatiales (CNES)
+#
+# This file is part of Let-it-snow (LIS)
+#
+#     https://gitlab.orfeo-toolbox.org/remote_modules/let-it-snow
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import os
+import sys
+import unittest
+
+
+class MyTestCase(unittest.TestCase):
+
+    def __init__(self, testname, data_test, unit_test, output):
+        super(MyTestCase, self).__init__(testname)
+        self.data_test = data_test
+        self.unit_test = unit_test + "fsc_config_test/"
+        self.output = output
+        if not os.path.exists(self.output):  
+            os.makedirs(self.output)   
+          
+
+
+    def test_load_metadata_from_input_dir(self):
+        config_file = self.unit_test + "lis_configuration.json"
+        with open(config_file) as json_data_file:
+            data = json.load(json_data_file)
+            input_dir = self.data_test + "SENTINEL2A_20210415-105910-624_L2A_T30TYN_C_V2-2"
+            config = FscConfig(data, input_dir, None, None, None)
+            self.assertIsNotNone(config.metadata)
+            self.assertTrue(input_dir in config.metadata)
+            self.assertTrue(os.path.exists(config.metadata))
+    
+    def test_load_metadata_from_configuration(self):
+        config_file = self.unit_test + "lis_configuration_metadata_overriden.json"
+        with open(config_file) as json_data_file:
+            data = json.load(json_data_file)
+            input_dir = self.data_test + "SENTINEL2A_20210415-105910-624_L2A_T30TYN_C_V2-2"
+            config = FscConfig(data, input_dir, None, None, None)
+            self.assertIsNotNone(config.metadata)
+            self.assertTrue(input_dir not in config.metadata)
+            self.assertTrue("SENTINEL2A_20160217-111843-605_L2A_T29RNQ_D_V1-0_MTD_ALL.xml" in config.metadata)
+            self.assertTrue(os.path.exists(config.metadata))
\ No newline at end of file