diff --git a/apps/yms/app/src/test/java/org/onosproject/yms/app/yab/MockYmsManager.java b/apps/yms/app/src/test/java/org/onosproject/yms/app/yab/MockYmsManager.java
new file mode 100644
index 0000000..22f4fd9
--- /dev/null
+++ b/apps/yms/app/src/test/java/org/onosproject/yms/app/yab/MockYmsManager.java
@@ -0,0 +1,124 @@
+/*
+ * 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.yms.app.yab;
+
+import org.onosproject.yms.app.ydt.YangRequestWorkBench;
+import org.onosproject.yms.app.ysr.TestYangSchemaNodeProvider;
+import org.onosproject.yms.app.ysr.YangSchemaRegistry;
+import org.onosproject.yms.ych.YangCodecHandler;
+import org.onosproject.yms.ych.YangDataTreeCodec;
+import org.onosproject.yms.ych.YangProtocolEncodingFormat;
+import org.onosproject.yms.ydt.YdtBuilder;
+import org.onosproject.yms.ydt.YdtResponse;
+import org.onosproject.yms.ydt.YdtWalker;
+import org.onosproject.yms.ydt.YmsOperationType;
+import org.onosproject.yms.ymsm.YmsService;
+import org.onosproject.yms.ynh.YangNotificationService;
+import org.onosproject.yms.ysr.YangModuleIdentifier;
+import org.onosproject.yms.ysr.YangModuleLibrary;
+
+import java.util.List;
+
+/**
+ * Represents implementation of YANG application management system manager.
+ */
+public class MockYmsManager
+        implements YmsService {
+
+    YangSchemaRegistry schemaRegistry;
+    TestYangSchemaNodeProvider testYangSchemaNodeProvider =
+            new TestYangSchemaNodeProvider();
+
+    @Override
+    public YdtBuilder getYdtBuilder(String logicalRootName,
+                                    String rootNamespace,
+                                    YmsOperationType operationType) {
+        testYangSchemaNodeProvider.processSchemaRegistry(new TestManager());
+        schemaRegistry = testYangSchemaNodeProvider.getDefaultYangSchemaRegistry();
+        return new YangRequestWorkBench(logicalRootName, rootNamespace,
+                                        operationType, schemaRegistry, false);
+    }
+
+    @Override
+    public YdtBuilder getYdtBuilder(String logicalRootName,
+                                    String rootNamespace,
+                                    YmsOperationType operationType,
+                                    Object schemaRegistryForYdt) {
+        return null;
+    }
+
+    @Override
+    public YdtWalker getYdtWalker() {
+        return null;
+    }
+
+    @Override
+    public YdtResponse executeOperation(YdtBuilder operationRequest) {
+        YangApplicationBroker requestBroker =
+                new YangApplicationBroker(schemaRegistry);
+        switch (operationRequest.getYmsOperationType()) {
+            case EDIT_CONFIG_REQUEST:
+                try {
+                    return requestBroker.processEdit(operationRequest);
+                } catch (CloneNotSupportedException e) {
+                }
+                break;
+            case QUERY_CONFIG_REQUEST:
+            case QUERY_REQUEST:
+                return requestBroker.processQuery(operationRequest);
+            case RPC_REQUEST:
+                return requestBroker.processOperation(operationRequest);
+            default:
+        }
+        return null;
+    }
+
+    @Override
+    public YangNotificationService getYangNotificationService() {
+        return null;
+    }
+
+    @Override
+    public void registerService(Object appManager, Class<?> yangService,
+                                List<String> supportedFeatureList) {
+    }
+
+    @Override
+    public void unRegisterService(Object appManager, Class<?> yangService) {
+
+    }
+
+    @Override
+    public YangModuleLibrary getYangModuleLibrary() {
+        return null;
+    }
+
+    @Override
+    public String getYangFile(YangModuleIdentifier moduleIdentifier) {
+        return null;
+    }
+
+    @Override
+    public void registerDefaultCodec(YangDataTreeCodec defaultCodec,
+                                     YangProtocolEncodingFormat dataFormat) {
+    }
+
+    @Override
+    public YangCodecHandler getYangCodecHandler() {
+        return null;
+    }
+}