diff --git a/SAS/TMSS/test/t_tmssapp_scheduling_django_API.py b/SAS/TMSS/test/t_tmssapp_scheduling_django_API.py
index 719013734259c39a65aa0f8afc9719d3ee25658a..e874abfa07ce6c9e4f0254517e605b0c5d531c90 100755
--- a/SAS/TMSS/test/t_tmssapp_scheduling_django_API.py
+++ b/SAS/TMSS/test/t_tmssapp_scheduling_django_API.py
@@ -376,6 +376,15 @@ class FilesystemTest(unittest.TestCase):
         self.assertLess(before, entry.updated_at)
         self.assertGreater(after, entry.updated_at)
 
+    def test_Filesystem_raises_ValueError_on_invalid_directory_name(self):
+
+        # setup
+        test_data = Filesystem_test_data(directory="/no/trailing/slash")
+
+        # assert
+        with self.assertRaises(ValueError):
+            entry = models.Filesystem.objects.create(**test_data)
+
 
 class ClusterTest(unittest.TestCase):
     def test_Cluster_gets_created_with_correct_creation_timestamp(self):
diff --git a/SAS/TMSS/test/t_tmssapp_specification_django_API.py b/SAS/TMSS/test/t_tmssapp_specification_django_API.py
index e994df895e9f5167535d8981ce9ab552bc3cd69b..b2a6a26940dbc92980c3dee255527f1a0e28a837 100755
--- a/SAS/TMSS/test/t_tmssapp_specification_django_API.py
+++ b/SAS/TMSS/test/t_tmssapp_specification_django_API.py
@@ -249,6 +249,19 @@ class ProjectTest(unittest.TestCase):
         self.assertLess(before, entry.updated_at)
         self.assertGreater(after, entry.updated_at)
 
+    def test_Project_raises_ValueError_on_invalid_archive_subdirectory_name(self):
+
+        # setup
+        test_data_1 = Project_test_data(archive_subdirectory="no/trailing/slash")
+        test_data_2 = Project_test_data(archive_subdirectory="/with/leading/slash/")
+
+        # assert
+        with self.assertRaises(ValueError):
+            entry = models.Project.objects.create(**test_data_1)
+
+        with self.assertRaises(ValueError):
+            entry = models.Project.objects.create(**test_data_2)
+
 
 class ProjectQuotaTest(unittest.TestCase):
     def test_ProjectQuota_prevents_missing_project(self):
diff --git a/SAS/TMSS/test/tmss_test_data_django_models.py b/SAS/TMSS/test/tmss_test_data_django_models.py
index 62e8a4ae088072822af043492c1046ec8784841e..9f0fce4990036d679d83f6ed0e3e69415def009a 100644
--- a/SAS/TMSS/test/tmss_test_data_django_models.py
+++ b/SAS/TMSS/test/tmss_test_data_django_models.py
@@ -123,7 +123,7 @@ def Cycle_test_data() -> dict:
             "start": datetime.utcnow().isoformat(),
             "stop": datetime.utcnow().isoformat()}
 
-def Project_test_data() -> dict:
+def Project_test_data(archive_subdirectory="my_project/") -> dict:
     return  { #"cycles": [models.Cycle.objects.create(**Cycle_test_data())], # ManyToMany, use set()
               "name": 'my_project_' + str(uuid.uuid4()),
                "description": 'my description ' + str(uuid.uuid4()),
@@ -134,7 +134,7 @@ def Project_test_data() -> dict:
                "private_data": True,
                "expert": True,
                "filler": False,
-               "archive_subdirectory": "my_project/"}
+               "archive_subdirectory": archive_subdirectory}
 
 def ResourceType_test_data() -> dict:
     return  {
@@ -431,10 +431,10 @@ def DataproductTransform_test_data() -> dict:
                         "identity": True,
                         "tags": ['tmss', 'testing']}
 
-def Filesystem_test_data() -> dict:
+def Filesystem_test_data(directory="/") -> dict:
     return {"capacity": 1111111111,
                         "cluster": models.Cluster.objects.create(**Cluster_test_data()),
-                        "directory": "/",
+                        "directory": directory,
                         "tags": ['tmss', 'testing']}
 
 def Cluster_test_data(name="default cluster") -> dict: