Fix EventuallyConsistentMapImpl unit tests.

Change-Id: I5d114bac40c16d0f67330ba2b4b922a4301666b2

@@ -85,7 +85,7 @@ public class EventuallyConsistentMapImpl<K, V>
 
     private final ScheduledExecutorService backgroundExecutor;
 
-    private final ExecutorService broadcastMessageExecutor;
+    private ExecutorService broadcastMessageExecutor;
 
     private volatile boolean destroyed = false;
     private static final String ERROR_DESTROYED = " map is already destroyed";
@@ -188,6 +188,18 @@ public class EventuallyConsistentMapImpl<K, V>
         };
     }
 
+    /**
+     * Sets the executor to use for broadcasting messages and returns this
+     * instance for method chaining.
+     * @param executor executor service
+     * @return this instance
+     */
+    public EventuallyConsistentMapImpl<K, V> withBroadcastMessageExecutor(ExecutorService executor) {
+        checkNotNull(executor, "Null executor");
+        broadcastMessageExecutor = executor;
+        return this;
+    }
+
     @Override
     public int size() {
         checkState(!destroyed, mapName + ERROR_DESTROYED);

@@ -17,10 +17,10 @@ package org.onosproject.store.ecmap;
 
 import com.google.common.collect.ComparisonChain;
 import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.MoreExecutors;
 
 import org.junit.After;
 import org.junit.Before;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.onlab.packet.IpAddress;
 import org.onlab.util.KryoNamespace;
@@ -60,8 +60,6 @@ import static org.junit.Assert.fail;
 /**
  * Unit tests for EventuallyConsistentMapImpl.
  */
-// FIXME: fix this test
-@Ignore
 public class EventuallyConsistentMapImplTest {
 
     private EventuallyConsistentMap<String, String> ecMap;
@@ -144,7 +142,8 @@ public class EventuallyConsistentMapImplTest {
 
         ecMap = new EventuallyConsistentMapImpl<>(MAP_NAME, clusterService,
                                                   clusterCommunicator,
-                                                  serializer, clockService);
+                                                  serializer, clockService)
+                                        .withBroadcastMessageExecutor(MoreExecutors.newDirectExecutorService());
 
         // Reset ready for tests to add their own expectations
         reset(clusterCommunicator);