[ONOS-2365]Unit test for PcepTunnelProvider

Change-Id: I2903756913225acf43b324da90faa76bd41b6533
diff --git a/providers/pcep/tunnel/src/test/java/org/onosproject/provider/pcep/tunnel/impl/TunnelProviderRegistryAdapter.java b/providers/pcep/tunnel/src/test/java/org/onosproject/provider/pcep/tunnel/impl/TunnelProviderRegistryAdapter.java
new file mode 100644
index 0000000..7292d0b
--- /dev/null
+++ b/providers/pcep/tunnel/src/test/java/org/onosproject/provider/pcep/tunnel/impl/TunnelProviderRegistryAdapter.java
@@ -0,0 +1,56 @@
+package org.onosproject.provider.pcep.tunnel.impl;
+
+import java.util.Set;
+
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.incubator.net.tunnel.TunnelProviderRegistry;
+import org.onosproject.incubator.net.tunnel.TunnelProviderService;
+import org.onosproject.net.provider.ProviderId;
+
+public class TunnelProviderRegistryAdapter implements TunnelProviderRegistry {
+    TunnelProvider provider;
+
+    @Override
+    public TunnelProviderService register(TunnelProvider provider) {
+        this.provider = provider;
+        return new TestProviderService();
+    }
+
+    @Override
+    public void unregister(TunnelProvider provider) {
+    }
+
+    @Override
+    public Set<ProviderId> getProviders() {
+        return null;
+    }
+
+    private class TestProviderService implements TunnelProviderService {
+
+        @Override
+        public TunnelProvider provider() {
+            return null;
+        }
+
+        @Override
+        public TunnelId tunnelAdded(TunnelDescription tunnel) {
+            return null;
+        }
+
+        @Override
+        public void tunnelRemoved(TunnelDescription tunnel) {
+        }
+
+        @Override
+        public void tunnelUpdated(TunnelDescription tunnel) {
+        }
+
+        @Override
+        public Tunnel tunnelQueryById(TunnelId tunnelId) {
+            return null;
+        }
+    }
+}