Added a slew of adapters to shorten the tests and to allow them to be used in more upcoming tests.
diff --git a/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java b/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java
new file mode 100644
index 0000000..bfb28f6
--- /dev/null
+++ b/core/api/src/test/java/org/onlab/onos/net/device/DeviceServiceAdapter.java
@@ -0,0 +1,58 @@
+package org.onlab.onos.net.device;
+
+import org.onlab.onos.net.Device;
+import org.onlab.onos.net.DeviceId;
+import org.onlab.onos.net.MastershipRole;
+import org.onlab.onos.net.Port;
+import org.onlab.onos.net.PortNumber;
+
+import java.util.List;
+
+/**
+ * Test adapter for device service.
+ */
+public class DeviceServiceAdapter implements DeviceService {
+ @Override
+ public int getDeviceCount() {
+ return 0;
+ }
+
+ @Override
+ public Iterable<Device> getDevices() {
+ return null;
+ }
+
+ @Override
+ public Device getDevice(DeviceId deviceId) {
+ return null;
+ }
+
+ @Override
+ public MastershipRole getRole(DeviceId deviceId) {
+ return null;
+ }
+
+ @Override
+ public List<Port> getPorts(DeviceId deviceId) {
+ return null;
+ }
+
+ @Override
+ public Port getPort(DeviceId deviceId, PortNumber portNumber) {
+ return null;
+ }
+
+ @Override
+ public boolean isAvailable(DeviceId deviceId) {
+ return false;
+ }
+
+ @Override
+ public void addListener(DeviceListener listener) {
+ }
+
+ @Override
+ public void removeListener(DeviceListener listener) {
+ }
+
+}