diff --git a/lib/test.py b/lib/test.py
new file mode 100644
index 0000000..97f6126
--- /dev/null
+++ b/lib/test.py
@@ -0,0 +1,216 @@
+import unittest
+import os
+
+import manage_configs 
+
+
+class TestTOSGroupsFromLocalConfigs(unittest.TestCase):
+
+    def setUp(self):
+        self.config_dir = os.environ.get('CREMIG_CFG')
+
+    def test_get_keywords_of_level_from_local_file(self):
+        """
+        Test whether the extraction of the different TOS Level works
+        loaded from local config and environment variable
+        if config is changed, test will fail
+        """
+
+        TOS_CFG = manage_configs.TOSGroupsConfig(self.config_dir)
+        allKeywords = TOS_CFG.get_all_keywords()
+
+        result = ['TOS_Schoenenberger_Produkt', 'TOS_Automation', 'TOS_Maschinenelement', 'TOS_Schoenenberger_Komponenten', 'TOS_Pneumatik', 'TOS_Konfig']
+        level1 = TOS_CFG.get_keywords_of_level(allKeywords, 1)
+        self.assertCountEqual(level1, result)
+
+    def test_get_all_keywords_from_local_file(self):
+        """
+        Test whether the extraction of the different TOS Level works
+        loaded from local config and environment variable
+        if config is changed, test will fail
+        """
+
+        TOS_CFG = manage_configs.TOSGroupsConfig(self.config_dir)
+
+        allKeywords = TOS_CFG.get_all_keywords()
+
+        result = {'TOS-Gruppe': 0,
+        'TOS_Schoenenberger_Produkt': 1,
+        'TOS_Automation': 1,
+        'TOS_Maschinenelement': 1,
+        'TOS_Schoenenberger_Komponenten': 1,
+        'TOS_Pneumatik': 1,
+        'TOS_Konfig': 1,
+        'TOS_ILS': 2,
+        'TOS_MAS': 2,
+        'TOS_Spinnereikomponente': 2,
+        'TOS_Betriebsmittel': 2,
+        'TOS_Geruest': 2,
+        'TOS_FremdTransport': 2,
+        'TOS_MAS_Konfig': 2,
+        'TOS_ILS_2': 3,
+        'TOS_ILS_Foerderer': 3,
+        'TOS_Trolley': 3,
+        'TOS_Trolley_Projekte': 3,
+        'TOS_Trolley_Omniflo': 4,
+        'TOS_Trolley_Spinnerei': 4,
+        'TOS_Trolley_ILS': 4,
+        'TOS_Schaltschrank': 2,
+        'TOS_Schalt_Einbau': 2,
+        'TOS_Dezentral': 2,
+        'TOS_Automation_Sensorik': 2,
+        'TOS_Kabel': 2,
+        'TOS_Installation': 2,
+        'TOS_Automation_Sonstiges': 2,
+        'TOS_Verbindungselement': 2,
+        'TOS_Lager': 2,
+        'TOS_Kraft_Drehmoment': 2,
+        'TOS_Sicherungselement': 2,
+        'TOS_Bedienungselement': 2}
+        self.assertCountEqual(allKeywords, result)
+
+class TestTOSGroupsGeneral(unittest.TestCase):
+
+    def setUp(self):
+        
+        self.tos_test_str = """
+{
+    "root": "TOS-Gruppe",
+    "TOS-Gruppe": {
+        "TOS-level": 1,
+        "children": {
+            "0": "Intern/Referenzgruppe",
+            "1": "Halbzeug",
+            "2": "Verkaufsprodukte",
+            "3": "Schönenberger Produkte",
+            "4": "Automation",
+            "5": "Maschinenelement",
+            "6": "Schönenberger Komponenten",
+            "7": "Pneumatik",
+            "8": "Konfiguration",
+            "9": "."
+        },
+        "reference-ids": {
+            "0": "TOS_Intern_Ref",
+            "1": "TOS_Halbzeug",
+            "2": "TOS_Verkaufsprodukte",
+            "3": "TOS_Schoenenberger_Produkt",
+            "4": "TOS_Automation",
+            "5": "TOS_Maschinenelement",
+            "6": "TOS_Schoenenberger_Komponenten",
+            "7": "TOS_Pneumatik",
+            "8": "TOS_Konfig"
+        }
+    },
+    "TOS_Schoenenberger_Produkt": {
+        "TOS-level": 2,
+        "children": {
+            "30": "ILS IntraLogistikSystem",
+            "31": "MAS Mittenabgehängtes System - OMNIFLO",
+            "32": "Spinnereikomponente",
+            "33": "Betriebsmittel",
+            "34": "Gerüst",
+            "35": "Fremd-Transportsysteme & SSG-Anbauten",
+            "36": "Förderer MAS aktuell Konfiguration",
+            "37": "Frei",
+            "38": "CAD-Übernahme Weiche",
+            "39": "Farbe"
+        },
+        "reference-ids": {
+            "30": "TOS_ILS",
+            "31": "TOS_MAS",
+            "32": "TOS_Spinnereikomponente",
+            "33": "TOS_Betriebsmittel",
+            "34": "TOS_Geruest",
+            "35": "TOS_FremdTransport",
+            "36": "TOS_MAS_Konfig"
+        }
+    },
+    "TOS_ILS": {
+        "TOS-level": 3,
+        "children": {
+            "300": "ILS 2.0",
+            "301": "ILS 3.0",
+            "302": "Förderer"
+        },
+        "reference-ids": {
+            "300": "TOS_ILS_2",
+            "302": "TOS_ILS_Foerderer"
+        }
+    },
+    "TOS_MAS": {
+        "TOS-level": 3,
+        "children": {
+            "310": "Fahrstrecke",
+            "311": "Ein- und Anbaugruppe für Omniflo System",
+            "312": "Verbinder und Kleinteil",
+            "313": "Baugruppe für Aktionen an/mit Trolleys",
+            "314": "Förderer"
+        },
+        "reference-ids": {
+            "310": "TOS_MAS_Fahrstecke"
+        }
+    },
+    "TOS_Spinnereikomponente": {
+        "TOS-level": 3,
+        "children": {
+            "320": "Hülsenreiniger automatisch",
+            "321": "Hülsenreiniger manuell",
+            "322": "Reibradantrieb RA"
+        },
+        "reference-ids": {}
+    },
+    "TOS_Betriebsmittel": {
+        "TOS-level": 3,
+        "children": {
+            "330": "Trolley Standard",
+            "331": "Trolley Projekte"
+        },
+        "reference-ids": {
+            "330": "TOS_Trolley",
+            "331": "TOS_Trolley_Projekte"
+        }
+    }
+}
+"""
+
+
+    def test_get_keywords_of_level_from_local_file(self):
+        """
+        Test whether the extraction of the different TOS Level works
+        loaded from local config and environment variable
+        """
+
+        TOS_CFG = manage_configs.TOSGroupsConfig()
+        TOS_CFG.from_json(self.tos_test_str)
+        allKeywords = TOS_CFG.get_all_keywords()
+
+        level0 = TOS_CFG.get_keywords_of_level(allKeywords, 0)
+        self.assertCountEqual(level0, ["TOS-Gruppe"])
+        level1 = TOS_CFG.get_keywords_of_level(allKeywords, 1)
+        self.assertCountEqual(level1, ["TOS_Schoenenberger_Produkt"])
+        level2 = TOS_CFG.get_keywords_of_level(allKeywords, 2)
+        self.assertCountEqual(level2, ["TOS_ILS", "TOS_MAS", "TOS_Spinnereikomponente", "TOS_Betriebsmittel"])
+
+    def test_get_all_keywords_from_local_file(self):
+        """
+        Test whether the extraction of the different TOS Level works
+        loaded from local config and environment variable
+        """
+
+        TOS_CFG = manage_configs.TOSGroupsConfig()
+        TOS_CFG.from_json(self.tos_test_str)
+
+        allKeywords = TOS_CFG.get_all_keywords()
+
+        result = {'TOS-Gruppe': 0,
+        'TOS_Schoenenberger_Produkt': 1,
+        'TOS_ILS': 2,
+        'TOS_MAS': 2,
+        'TOS_Spinnereikomponente': 2,
+        'TOS_Betriebsmittel': 2}
+        self.assertCountEqual(allKeywords, result)
+
+
+if __name__ == '__main__':
+    unittest.main()