diff --git a/src/test/java/org/springframework/samples/petclinic/newDataStore/NewOwnerStoreTest.java b/src/test/java/org/springframework/samples/petclinic/newDataStore/NewOwnerStoreTest.java
index 2faebb633..b3e73d674 100644
--- a/src/test/java/org/springframework/samples/petclinic/newDataStore/NewOwnerStoreTest.java
+++ b/src/test/java/org/springframework/samples/petclinic/newDataStore/NewOwnerStoreTest.java
@@ -8,12 +8,16 @@ import java.util.Map;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.Mock;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.samples.petclinic.owner.Owner;
 import org.springframework.samples.petclinic.owner.OwnerRepository;
 import org.springframework.samples.petclinic.owner.StaticOwner;
 import org.springframework.test.context.junit4.SpringRunner;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * @author Gibran
  */
@@ -28,6 +32,9 @@ public class NewOwnerStoreTest {
 
     Map<Integer, StaticOwner> ownerStore;
 
+    @Mock
+    Owner mockOwner;
+
     @Before
     public void setup() {
         testOwnerStore = new NewOwnerStore(owner);
@@ -50,4 +57,20 @@ public class NewOwnerStoreTest {
     public void consistencyCheck () {
         System.out.println(testOwnerStore.checkConsistency());
     }
+
+    @Test
+    public void checkShadowWrite() {
+        testOwnerStore = new NewOwnerStore(owner);
+
+       //make sure that inconsisties are recorded and fixed
+       testOwnerStore.testPutInOldDatastoreOnly(mockOwner);
+       assertEquals(1, testOwnerStore.checkConsistency());
+       assertEquals(0, testOwnerStore.checkConsistency());
+
+       //make sure that any changes written to old database are also written to new database
+       testOwnerStore.save(mockOwner);
+       assertEquals(0, testOwnerStore.checkConsistency());
+    }
+
+
 }