Added unit test utilities and some more unit tests.
diff --git a/core/pom.xml b/core/pom.xml
index 13deec4..272b76b 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -26,11 +26,14 @@
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
         </dependency>
-
         <dependency>
             <groupId>org.onlab.onos</groupId>
             <artifactId>onlab-misc</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.onlab.onos</groupId>
+            <artifactId>onlab-junit</artifactId>
+        </dependency>
     </dependencies>
 
     <build>