Added memory implementation of DummyStorageService for the subscriptions part

broker/src/test/java/org/dna/mqtt/moquette/messaging/spi/impl/DummyStorageService.java

@@ -1,5 +1,6 @@
 package org.dna.mqtt.moquette.messaging.spi.impl;
 
+import java.util.ArrayList;
 import org.dna.mqtt.moquette.messaging.spi.IMatchingCondition;
 import org.dna.mqtt.moquette.messaging.spi.IStorageService;
 import org.dna.mqtt.moquette.messaging.spi.impl.events.PublishEvent;
@@ -8,11 +9,18 @@ import org.dna.mqtt.moquette.proto.messages.AbstractMessage;
 
 import java.util.Collection;
 import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 /**
  */
 public class DummyStorageService implements IStorageService {
+    
+    private Map<String, Set<Subscription>> m_persistentSubscriptions = new HashMap<String, Set<Subscription>>();
+    
     public void initStore() {
         //To change body of implemented methods use File | Settings | File Templates.
     }
@@ -46,15 +54,27 @@ public class DummyStorageService implements IStorageService {
     }
 
     public void addNewSubscription(Subscription newSubscription, String clientID) {
-        //To change body of implemented methods use File | Settings | File Templates.
+        if (!m_persistentSubscriptions.containsKey(clientID)) {
+            m_persistentSubscriptions.put(clientID, new HashSet<Subscription>());
+        }
+
+        Set<Subscription> subs = m_persistentSubscriptions.get(clientID);
+        if (!subs.contains(newSubscription)) {
+            subs.add(newSubscription);
+            m_persistentSubscriptions.put(clientID, subs);
+        }
     }
 
     public void removeAllSubscriptions(String clientID) {
-        //To change body of implemented methods use File | Settings | File Templates.
+        m_persistentSubscriptions.remove(clientID);
     }
 
     public List<Subscription> retrieveAllSubscriptions() {
-        return Collections.EMPTY_LIST;
+        List<Subscription> allSubscriptions = new ArrayList<Subscription>();
+        for (Map.Entry<String, Set<Subscription>> entry : m_persistentSubscriptions.entrySet()) {
+            allSubscriptions.addAll(entry.getValue());
+        }
+        return allSubscriptions;
     }
 
     public void close() {

broker/src/test/java/org/dna/mqtt/moquette/messaging/spi/impl/ProtocolProcessorTest.java

@@ -231,7 +231,7 @@ public class ProtocolProcessorTest {
                 }
             }
         };
-        subs.init(m_storageService);
+        subs.init(new DummyStorageService());
         
         //simulate a connect that register a clientID to an IoSession
         IMessaging mockedMessaging = mock(IMessaging.class);