TST: Add tests for is_list and is_ref

test/runtests.jl

@@ -148,9 +148,12 @@ using CaosDB
         # @test CaosDB.Entity.get_value(
         #     CaosDB.Entity.get_properties(rec_with_parent_and_props)[1],
         # ) == "2"
-        @test CaosDB.Entity.get_datatype(
+        type, is_ref, is_list = CaosDB.Entity.get_datatype(
             CaosDB.Entity.get_properties(rec_with_parent_and_props)[2],
-        )[1] == "TEXT"
+        )
+        @test type == "TEXT"
+        @test is_ref == false
+        @test is_list == false
         @test CaosDB.Entity.get_id(
             CaosDB.Entity.get_properties(rec_with_parent_and_props)[2],
         ) == "id_of_property_2"