diff --git a/apps/config/src/test/java/org/onosproject/d/config/ResourceIdsTest.java b/apps/config/src/test/java/org/onosproject/d/config/ResourceIdsTest.java
new file mode 100644
index 0000000..dc17b11
--- /dev/null
+++ b/apps/config/src/test/java/org/onosproject/d/config/ResourceIdsTest.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.d.config;
+
+import static org.junit.Assert.*;
+import static org.onosproject.d.config.DeviceResourceIds.DCS_NAMESPACE;
+
+import org.junit.Test;
+import org.onosproject.yang.model.ResourceId;
+
+public class ResourceIdsTest {
+
+    final ResourceId DEVICES = ResourceId.builder()
+            .addBranchPointSchema(DeviceResourceIds.ROOT_NAME, DCS_NAMESPACE)
+            .addBranchPointSchema(DeviceResourceIds.DEVICES_NAME, DCS_NAMESPACE)
+            .build();
+
+    @Test
+    public void testConcat() {
+        ResourceId devices = ResourceId.builder()
+            .addBranchPointSchema(DeviceResourceIds.DEVICES_NAME,
+                                  DCS_NAMESPACE)
+            .build();
+
+        assertEquals(DEVICES, ResourceIds.concat(DeviceResourceIds.ROOT_ID, devices));
+    }
+
+    @Test
+    public void testRelativize() {
+        ResourceId relDevices = ResourceIds.relativize(DeviceResourceIds.ROOT_ID, DEVICES);
+        assertEquals(DeviceResourceIds.DEVICES_NAME,
+                     relDevices.nodeKeys().get(0).schemaId().name());
+        assertEquals(DCS_NAMESPACE,
+                     relDevices.nodeKeys().get(0).schemaId().namespace());
+        assertEquals(1, relDevices.nodeKeys().size());
+    }
+
+    @Test
+    public void testRelativizeEmpty() {
+        ResourceId relDevices = ResourceIds.relativize(DEVICES, DEVICES);
+        // equivalent of . in file path, expressed as ResourceId with empty
+        assertTrue(relDevices.nodeKeys().isEmpty());
+
+    }
+}