diff --git a/tests/test_manager.py b/tests/test_manager.py
index bfe4d53..3108402 100644
--- a/tests/test_manager.py
+++ b/tests/test_manager.py
@@ -12,11 +12,23 @@
 from resallocserver import models
 from resallocserver.app import session_scope
 from resallocserver.main import Synchronizer
-from resallocserver.manager import Manager, CrossPoolConfig
+from resallocserver.manager import Manager, CrossPoolConfig, normalize_tags
 
 from tests import ResallocTestCase
 
 
+def test_normalize_tags():
+    """ Test that the normalize_tag() properly modifies the tags """
+    tags = ["a"]
+    normalize_tags(tags)
+    assert tags == [{"name": "a", "priority": 0}]
+    tags = ["a", {"name": "b"}, {"name": "c", "priority": 10}]
+    normalize_tags(tags)
+    assert tags == [{"name": "a", "priority": 0},
+                    {"name": "b", "priority": 0},
+                    {"name": "c", "priority": 10}]
+
+
 class TestManager(ResallocTestCase):
 
     @pytest.mark.parametrize(