diff --git a/tests/test_storage.cpp b/tests/test_storage.cpp
index 4b7b646..50307ba 100644
--- a/tests/test_storage.cpp
+++ b/tests/test_storage.cpp
@@ -60,13 +60,21 @@ const lest::test specification[] =
       EXPECT(catima::_storage.get_index()==0);
       
       catima::_storage.Add(p,water);
+      auto dp = catima::_storage.Get(0);
       EXPECT(catima::_storage.get_index()==1);
-      
+      EXPECT(dp.p.A==12);
+      EXPECT(dp.m.ncomponents()==2);
       catima::_storage.Add(p,water);
+      auto dp2 = catima::_storage.Get(1);
       EXPECT(catima::_storage.get_index()==1);
+      EXPECT(dp2.p.A==0);
+      EXPECT(dp2.m.ncomponents()==0);
       
       catima::_storage.Add(p,graphite);
+      auto dp3 = catima::_storage.Get(1);
       EXPECT(catima::_storage.get_index()==2);
+      EXPECT(dp3.p.A==12);
+      EXPECT(dp3.m.ncomponents()==1);
       
       catima::_storage.Add(p,graphite);
       EXPECT(catima::_storage.get_index()==2);