diff --git a/unittests/test_apiutils.py b/unittests/test_apiutils.py
index 5488fbdd1d099dc7b494eab2f4be9e1e46f801aa..045c140fa7bec4b94aa06727a7eebfd8ce500c8a 100644
--- a/unittests/test_apiutils.py
+++ b/unittests/test_apiutils.py
@@ -29,7 +29,7 @@
 import caosdb as db
 import pickle
 import tempfile
-from caosdb.apiutils import apply_to_ids, id_query
+from caosdb.apiutils import apply_to_ids, create_id_query, retrieve_entity_with_id
 from .test_property import testrecord
 
 
@@ -63,7 +63,17 @@ def test_apply_to_ids():
     assert rec.properties[0].id == -23345
     assert rec.id == -23
 
-originalfunc = db.execute_query
-db.execute_query = lambda q: q
 def test_id_query():
-    assert id_query([1]) == 1
+    ids = [1,2,3,4,5]
+    assert create_id_query(ids) == 'FIND ENTITY WITH ID=1 OR ID=2 OR ID=3 OR ID=4 OR ID=5'
+
+original_retrieve_entity_with_id = retrieve_entity_with_id
+retrieve_entity_with_id = lambda eid: db.Record(id=eid)
+
+def test_resolve_reference():
+    prop = db.Property(id = 1, datatype=db.REFERENCE, value=100)
+    prop_list = [db.Property(id = 2, datatype=db.REFERENCE, value=200), 
+                 db.Property(id = 3, datatype=db.REFERENCE, value=300), 
+                 db.Property(id = 4, datatype=db.Integer, value=400)
+    ]
+    
\ No newline at end of file