diff --git a/src/test/java/net/onrc/onos/core/intent/ConstrainedBFSTreeTest.java b/src/test/java/net/onrc/onos/core/intent/ConstrainedBFSTreeTest.java
index 473b32b..dab2098 100644
--- a/src/test/java/net/onrc/onos/core/intent/ConstrainedBFSTreeTest.java
+++ b/src/test/java/net/onrc/onos/core/intent/ConstrainedBFSTreeTest.java
@@ -7,8 +7,8 @@
 import net.onrc.onos.core.intent.PathIntent;
 import net.onrc.onos.core.intent.PathIntentMap;
 import net.onrc.onos.core.intent.IntentOperation.Operator;
-import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
-import net.onrc.onos.ofcontroller.networkgraph.Path;
+import net.onrc.onos.core.topology.LinkEvent;
+import net.onrc.onos.core.topology.Path;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/src/test/java/net/onrc/onos/core/intent/IntentOperationListTest.java b/src/test/java/net/onrc/onos/core/intent/IntentOperationListTest.java
index aa87cbd..273fa07 100644
--- a/src/test/java/net/onrc/onos/core/intent/IntentOperationListTest.java
+++ b/src/test/java/net/onrc/onos/core/intent/IntentOperationListTest.java
@@ -6,9 +6,9 @@
 import net.onrc.onos.core.intent.IntentOperation;
 import net.onrc.onos.core.intent.IntentOperationList;
 import net.onrc.onos.core.intent.PathIntent;
+import net.onrc.onos.core.topology.LinkEvent;
+import net.onrc.onos.core.topology.Path;
 import net.onrc.onos.core.util.serializers.KryoFactory;
-import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
-import net.onrc.onos.ofcontroller.networkgraph.Path;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/src/test/java/net/onrc/onos/core/intent/MockNetworkGraph.java b/src/test/java/net/onrc/onos/core/intent/MockNetworkGraph.java
index fce9cc2..3b40259 100644
--- a/src/test/java/net/onrc/onos/core/intent/MockNetworkGraph.java
+++ b/src/test/java/net/onrc/onos/core/intent/MockNetworkGraph.java
@@ -1,12 +1,12 @@
 package net.onrc.onos.core.intent;
 
-import net.onrc.onos.ofcontroller.networkgraph.NetworkGraph;
-import net.onrc.onos.ofcontroller.networkgraph.NetworkGraphImpl;
-import net.onrc.onos.ofcontroller.networkgraph.Link;
-import net.onrc.onos.ofcontroller.networkgraph.LinkImpl;
-import net.onrc.onos.ofcontroller.networkgraph.Port;
-import net.onrc.onos.ofcontroller.networkgraph.Switch;
-import net.onrc.onos.ofcontroller.networkgraph.SwitchImpl;
+import net.onrc.onos.core.topology.Link;
+import net.onrc.onos.core.topology.LinkImpl;
+import net.onrc.onos.core.topology.NetworkGraph;
+import net.onrc.onos.core.topology.NetworkGraphImpl;
+import net.onrc.onos.core.topology.Port;
+import net.onrc.onos.core.topology.Switch;
+import net.onrc.onos.core.topology.SwitchImpl;
 
 /**
  * A mock class of NetworkGraph.
diff --git a/src/test/java/net/onrc/onos/core/intent/PathIntentMapTest.java b/src/test/java/net/onrc/onos/core/intent/PathIntentMapTest.java
index 32f7e0f..3c6a445 100644
--- a/src/test/java/net/onrc/onos/core/intent/PathIntentMapTest.java
+++ b/src/test/java/net/onrc/onos/core/intent/PathIntentMapTest.java
@@ -10,11 +10,11 @@
 import net.onrc.onos.core.intent.PathIntent;
 import net.onrc.onos.core.intent.PathIntentMap;
 import net.onrc.onos.core.intent.IntentOperation.Operator;
-import net.onrc.onos.ofcontroller.networkgraph.Link;
-import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
-import net.onrc.onos.ofcontroller.networkgraph.Path;
-import net.onrc.onos.ofcontroller.networkgraph.Port;
-import net.onrc.onos.ofcontroller.networkgraph.Switch;
+import net.onrc.onos.core.topology.Link;
+import net.onrc.onos.core.topology.LinkEvent;
+import net.onrc.onos.core.topology.Path;
+import net.onrc.onos.core.topology.Port;
+import net.onrc.onos.core.topology.Switch;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/src/test/java/net/onrc/onos/core/intent/PathIntentTest.java b/src/test/java/net/onrc/onos/core/intent/PathIntentTest.java
index 520d87d..0bff4f4 100644
--- a/src/test/java/net/onrc/onos/core/intent/PathIntentTest.java
+++ b/src/test/java/net/onrc/onos/core/intent/PathIntentTest.java
@@ -3,9 +3,9 @@
 import static org.junit.Assert.assertEquals;
 import net.onrc.onos.core.intent.ConstrainedShortestPathIntent;
 import net.onrc.onos.core.intent.PathIntent;
+import net.onrc.onos.core.topology.LinkEvent;
+import net.onrc.onos.core.topology.Path;
 import net.onrc.onos.core.util.serializers.KryoFactory;
-import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
-import net.onrc.onos.ofcontroller.networkgraph.Path;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/src/test/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModuleTest.java b/src/test/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModuleTest.java
index be8ad9a..9060a51 100644
--- a/src/test/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModuleTest.java
+++ b/src/test/java/net/onrc/onos/core/intent/runtime/PathCalcRuntimeModuleTest.java
@@ -15,12 +15,12 @@
 import net.onrc.onos.core.intent.runtime.IntentStateList;
 import net.onrc.onos.core.intent.runtime.PathCalcRuntimeModule;
 import net.onrc.onos.core.intent.runtime.PersistIntent;
-import net.onrc.onos.ofcontroller.networkgraph.DeviceEvent;
-import net.onrc.onos.ofcontroller.networkgraph.INetworkGraphListener;
-import net.onrc.onos.ofcontroller.networkgraph.INetworkGraphService;
-import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
-import net.onrc.onos.ofcontroller.networkgraph.PortEvent;
-import net.onrc.onos.ofcontroller.networkgraph.SwitchEvent;
+import net.onrc.onos.core.topology.DeviceEvent;
+import net.onrc.onos.core.topology.INetworkGraphListener;
+import net.onrc.onos.core.topology.INetworkGraphService;
+import net.onrc.onos.core.topology.LinkEvent;
+import net.onrc.onos.core.topology.PortEvent;
+import net.onrc.onos.core.topology.SwitchEvent;
 import net.onrc.onos.registry.controller.IControllerRegistryService;
 
 import org.junit.After;
diff --git a/src/test/java/net/onrc/onos/core/intent/runtime/UseCaseTest.java b/src/test/java/net/onrc/onos/core/intent/runtime/UseCaseTest.java
index 2505bb4..b8afdf2 100755
--- a/src/test/java/net/onrc/onos/core/intent/runtime/UseCaseTest.java
+++ b/src/test/java/net/onrc/onos/core/intent/runtime/UseCaseTest.java
@@ -25,13 +25,13 @@
 import net.onrc.onos.core.intent.runtime.PathCalcRuntimeModule;
 import net.onrc.onos.core.intent.runtime.PersistIntent;
 import net.onrc.onos.core.intent.runtime.PlanCalcRuntime;
-import net.onrc.onos.ofcontroller.networkgraph.DeviceEvent;
-import net.onrc.onos.ofcontroller.networkgraph.INetworkGraphListener;
-import net.onrc.onos.ofcontroller.networkgraph.INetworkGraphService;
-import net.onrc.onos.ofcontroller.networkgraph.LinkEvent;
-import net.onrc.onos.ofcontroller.networkgraph.NetworkGraph;
-import net.onrc.onos.ofcontroller.networkgraph.PortEvent;
-import net.onrc.onos.ofcontroller.networkgraph.SwitchEvent;
+import net.onrc.onos.core.topology.DeviceEvent;
+import net.onrc.onos.core.topology.INetworkGraphListener;
+import net.onrc.onos.core.topology.INetworkGraphService;
+import net.onrc.onos.core.topology.LinkEvent;
+import net.onrc.onos.core.topology.NetworkGraph;
+import net.onrc.onos.core.topology.PortEvent;
+import net.onrc.onos.core.topology.SwitchEvent;
 import net.onrc.onos.registry.controller.IControllerRegistryService;
 
 import org.junit.After;