diff --git a/drivers/fujitsu/src/test/java/org/onosproject/drivers/fujitsu/FujitsuVoltOnuOperConfigTest.java b/drivers/fujitsu/src/test/java/org/onosproject/drivers/fujitsu/FujitsuVoltOnuOperConfigTest.java
new file mode 100644
index 0000000..b6bf0de
--- /dev/null
+++ b/drivers/fujitsu/src/test/java/org/onosproject/drivers/fujitsu/FujitsuVoltOnuOperConfigTest.java
@@ -0,0 +1,279 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.drivers.fujitsu;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertNotNull;
+import static org.onosproject.drivers.fujitsu.FujitsuVoltXmlUtilityMock.*;
+
+/**
+ * Unit tests for methods of FujitsuVoltOnuOperConfig.
+ */
+public class FujitsuVoltOnuOperConfigTest {
+
+    private final FujitsuNetconfSessionListenerTest listener = new InternalSessionListener();
+
+    private static final String TEST_ONU_REBOOT = "onu-reboot";
+    private static final String TEST_ONU_ETHPORT_LOOPBACK = "onu-ethport-loopback";
+    private static final String TEST_ETHPORT_ID = "ethport-id";
+    private static final String TEST_LOOPBACK_MODE = "mode";
+
+    private static final String TEST_ONU_REBOOT_WITH_NAMESPACE = TEST_ANGLE_LEFT +
+            TEST_ONU_REBOOT + TEST_SPACE + TEST_VOLT_NE_NAMESPACE;
+    private static final String TEST_ONU_ETHPORT_LOOPBACK_WITH_NAMESPACE =
+            TEST_ANGLE_LEFT + TEST_ONU_ETHPORT_LOOPBACK + TEST_SPACE +
+            TEST_VOLT_NE_NAMESPACE;
+
+    private static final String[] INVALID_REBOOT_TCS = {
+        "xy1-b",
+        "--1",
+        "s-1",
+        "16-1-1",
+        "&AA-1",
+        "-1-1",
+    };
+    private static final String[] VALID_REBOOT_TCS = {
+        "1-2",
+        "16-11",
+    };
+    private static final String[] INVALID_ETHPORT_LOOPBACK_TCS = {
+        "-11-3--11",
+        "1-CCa",
+        "abc-1",
+        "^1-1-3",
+        "1-2:23-1",
+        "1:33:2",
+        "2-2-2:false",
+    };
+    private static final String[] VALID_ETHPORT_LOOPBACK_TCS = {
+        "8-1-1",
+        "1-11-3:release",
+        "2-2-2:operate",
+    };
+    private Integer currentKey;
+    private FujitsuNetconfControllerMock controller;
+    private FujitsuDriverHandlerAdapter driverHandler;
+    private FujitsuVoltOnuOperConfig voltConfig;
+
+    @Before
+    public void setUp() throws Exception {
+        controller = new FujitsuNetconfControllerMock();
+        driverHandler = controller.setUp(listener);
+        voltConfig = new FujitsuVoltOnuOperConfig();
+        voltConfig.setHandler(driverHandler);
+    }
+
+    /**
+     * Run to verify handling of invalid input for rpc operation.
+     */
+    @Test
+    public void testInvalidRebootOnuInput() throws Exception {
+        String reply;
+        String target;
+
+        for (int i = ZERO; i < INVALID_REBOOT_TCS.length; i++) {
+            target = INVALID_REBOOT_TCS[i];
+            reply = voltConfig.rebootOnu(target);
+            assertNull("Incorrect response for INVALID_REBOOT_TCS", reply);
+        }
+    }
+
+    /**
+     * Run to verify handling of valid input for rpc operation.
+     */
+    @Test
+    public void testValidRebootOnu() throws Exception {
+        String reply;
+        String target;
+
+        for (int i = ZERO; i < VALID_REBOOT_TCS.length; i++) {
+            target = VALID_REBOOT_TCS[i];
+            currentKey = i;
+            reply = voltConfig.rebootOnu(target);
+            assertNotNull("Incorrect response for VALID_REBOOT_TCS", reply);
+        }
+    }
+
+    /**
+     * Run to verify handling of invalid input for rpc operation.
+     */
+    @Test
+    public void testInvalidEthLoopbackOnuInput() throws Exception {
+        String target;
+        String reply;
+
+        for (int i = ZERO; i < INVALID_ETHPORT_LOOPBACK_TCS.length; i++) {
+            target = INVALID_ETHPORT_LOOPBACK_TCS[i];
+            reply = voltConfig.loopbackEthOnu(target);
+            assertNull("Incorrect response for INVALID_ETHPORT_LOOPBACK_TCS", reply);
+        }
+    }
+
+    /**
+     * Run to verify handling of valid input for rpc operation.
+     */
+    @Test
+    public void testValidLoopbackEthOnu() throws Exception {
+        String target;
+        String reply;
+
+        for (int i = ZERO; i < VALID_ETHPORT_LOOPBACK_TCS.length; i++) {
+            target = VALID_ETHPORT_LOOPBACK_TCS[i];
+            currentKey = i;
+            reply = voltConfig.loopbackEthOnu(target);
+            assertNotNull("Incorrect response for VALID_ETHPORT_LOOPBACK_TCS", reply);
+        }
+    }
+
+    /**
+     * Verifies XML request string by comparing with generated string.
+     *
+     * @param request XML string for rpc operation
+     * @return true or false
+     */
+    private boolean verifyWrappedRpcRequestForReboot(String request) {
+        StringBuilder rpc = new StringBuilder();
+        String target = VALID_REBOOT_TCS[currentKey];
+        String[] data = target.split(TEST_COLON);
+        String[] onuId = data[FIRST_PART].split(TEST_HYPHEN);
+
+        rpc.append(TEST_ANGLE_LEFT + TEST_ONU_REBOOT + TEST_SPACE);
+        rpc.append(TEST_VOLT_NE_NAMESPACE + TEST_ANGLE_RIGHT + TEST_NEW_LINE);
+
+        rpc.append(startTag(TEST_PONLINK_ID, false))
+            .append(onuId[FIRST_PART])
+            .append(endTag(TEST_PONLINK_ID))
+            .append(startTag(TEST_ONU_ID, false))
+            .append(onuId[SECOND_PART])
+            .append(endTag(TEST_ONU_ID))
+            .append(endTag(TEST_ONU_REBOOT));
+
+        String testRequest = rpc.toString();
+        String regex = TEST_WHITESPACES_REGEX;
+        int index = rpc.indexOf(regex);
+        while (index >= ZERO) {
+            testRequest = rpc.replace(index, index + regex.length(), TEST_EMPTY_STRING).toString();
+            request = request.replaceAll(regex, TEST_EMPTY_STRING);
+        }
+        boolean result = request.equals(testRequest);
+        assertTrue("Does not match with generated string", result);
+        return result;
+    }
+
+    /**
+     * Verifies XML request string by comparing with generated string.
+     *
+     * @param request XML string for rpc operation
+     * @return true or false
+     */
+    private boolean verifyWrappedRpcRequestForEthLoopback(String request) {
+        StringBuilder rpc = new StringBuilder();
+        String target = VALID_ETHPORT_LOOPBACK_TCS[currentKey];
+        String[] data = target.split(TEST_COLON);
+        String[] ethId = data[FIRST_PART].split(TEST_HYPHEN);
+
+        rpc.append(TEST_ANGLE_LEFT + TEST_ONU_ETHPORT_LOOPBACK + TEST_SPACE);
+        rpc.append(TEST_VOLT_NE_NAMESPACE + TEST_ANGLE_RIGHT + TEST_NEW_LINE);
+
+        rpc.append(startTag(TEST_PONLINK_ID, false))
+            .append(ethId[FIRST_PART])
+            .append(endTag(TEST_PONLINK_ID))
+            .append(startTag(TEST_ONU_ID, false))
+            .append(ethId[SECOND_PART])
+            .append(endTag(TEST_ONU_ID))
+            .append(startTag(TEST_ETHPORT_ID, false))
+            .append(ethId[THIRD_PART])
+            .append(endTag(TEST_ETHPORT_ID));
+        if (data.length > SECOND_PART) {
+            rpc.append(startTag(TEST_LOOPBACK_MODE, false))
+                .append(data[SECOND_PART])
+                .append(endTag(TEST_LOOPBACK_MODE));
+        }
+        rpc.append(endTag(TEST_ONU_ETHPORT_LOOPBACK));
+
+        String testRequest = rpc.toString();
+        String regex = TEST_WHITESPACES_REGEX;
+        int index = rpc.indexOf(regex);
+        while (index >= ZERO) {
+            testRequest = rpc.replace(index, index + regex.length(), TEST_EMPTY_STRING).toString();
+            request = request.replaceAll(regex, TEST_EMPTY_STRING);
+        }
+        boolean result = request.equals(testRequest);
+        assertTrue("Does not match with generated string", result);
+        return result;
+    }
+
+    /**
+     * Internal listener for device service events.
+     */
+    private class InternalSessionListener implements FujitsuNetconfSessionListenerTest {
+        @Override
+        public boolean verifyEditConfig(String request) {
+            return false;
+        }
+
+        @Override
+        public boolean verifyEditConfig(String target, String mode, String request) {
+            return false;
+        }
+
+        @Override
+        public boolean verifyGet(String filterSchema, String withDefaultsMode) {
+            return false;
+        }
+
+        @Override
+        public String buildGetReply() {
+            return null;
+        }
+
+        @Override
+        public boolean verifyWrappedRpc(String request) {
+            boolean result;
+            boolean reboot = false;
+
+            if (request.contains(TEST_ONU_REBOOT)) {
+                request = request.replaceAll(TEST_DUPLICATE_SPACES_REGEX, TEST_SPACE);
+                assertTrue("Does not contain:" + TEST_ONU_REBOOT_WITH_NAMESPACE,
+                        request.contains(TEST_ONU_REBOOT_WITH_NAMESPACE));
+                reboot = true;
+            } else {
+                request = request.replaceAll(TEST_DUPLICATE_SPACES_REGEX, TEST_SPACE);
+                assertTrue("Does not contain:" + TEST_ONU_ETHPORT_LOOPBACK_WITH_NAMESPACE,
+                        request.contains(TEST_ONU_ETHPORT_LOOPBACK_WITH_NAMESPACE));
+            }
+
+            if (reboot) {
+                result = verifyWrappedRpcRequestForReboot(request);
+            } else {
+                result = verifyWrappedRpcRequestForEthLoopback(request);
+            }
+
+            assertTrue("XML verification failure", result);
+            return result;
+        }
+
+        @Override
+        public void verifyStartSubscription(String filterSchema) {
+        }
+    }
+
+}