diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/common/BaseDeviceManagementTest.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/common/BaseDeviceManagementTest.java
index e22cd0ac627..b474c2908ff 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/common/BaseDeviceManagementTest.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/common/BaseDeviceManagementTest.java
@@ -30,17 +30,31 @@ import org.wso2.carbon.base.MultitenantConstants;
 import org.wso2.carbon.context.PrivilegedCarbonContext;
 import org.wso2.carbon.device.mgt.common.DeviceManagementException;
 import org.wso2.carbon.device.mgt.core.TestUtils;
+import org.wso2.carbon.device.mgt.core.authorization.DeviceAccessAuthorizationServiceImpl;
+import org.wso2.carbon.device.mgt.core.config.DeviceConfigurationManager;
 import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
 import org.wso2.carbon.device.mgt.core.dao.GroupManagementDAOFactory;
+import org.wso2.carbon.device.mgt.core.internal.DeviceManagementDataHolder;
+import org.wso2.carbon.device.mgt.core.internal.DeviceManagementServiceComponent;
 import org.wso2.carbon.device.mgt.core.notification.mgt.dao.NotificationManagementDAOFactory;
 import org.wso2.carbon.device.mgt.core.operation.mgt.dao.OperationManagementDAOFactory;
+import org.wso2.carbon.device.mgt.core.service.DeviceManagementProviderService;
+import org.wso2.carbon.device.mgt.core.service.DeviceManagementProviderServiceImpl;
+import org.wso2.carbon.device.mgt.core.service.GroupManagementProviderServiceImpl;
 import org.wso2.carbon.device.mgt.core.util.DeviceManagerUtil;
+import org.wso2.carbon.registry.core.config.RegistryContext;
+import org.wso2.carbon.registry.core.exceptions.RegistryException;
+import org.wso2.carbon.registry.core.internal.RegistryDataHolder;
+import org.wso2.carbon.registry.core.jdbc.realm.InMemoryRealmService;
+import org.wso2.carbon.registry.core.service.RegistryService;
+import org.wso2.carbon.user.core.service.RealmService;
 
 import javax.sql.DataSource;
 import javax.xml.bind.JAXBContext;
 import javax.xml.bind.JAXBException;
 import javax.xml.bind.Unmarshaller;
 import java.io.File;
+import java.io.InputStream;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
@@ -56,6 +70,7 @@ public abstract class BaseDeviceManagementTest {
         this.initDataSource();
         this.initSQLScript();
         this.initializeCarbonContext();
+        this.initServices();
     }
 
     protected void initDataSource() throws Exception {
@@ -66,6 +81,27 @@ public abstract class BaseDeviceManagementTest {
         NotificationManagementDAOFactory.init(dataSource);
     }
 
+    private void initServices() throws DeviceManagementException, RegistryException {
+        DeviceConfigurationManager.getInstance().initConfig();
+        DeviceManagementProviderService deviceMgtService = new DeviceManagementProviderServiceImpl();
+        DeviceManagementServiceComponent.notifyStartupListeners();
+        DeviceManagementDataHolder.getInstance().setDeviceManagementProvider(deviceMgtService);
+        DeviceManagementDataHolder.getInstance().setRegistryService(getRegistryService());
+        DeviceManagementDataHolder.getInstance().setDeviceAccessAuthorizationService(new DeviceAccessAuthorizationServiceImpl());
+        DeviceManagementDataHolder.getInstance().setGroupManagementProviderService(new GroupManagementProviderServiceImpl());
+        DeviceManagementDataHolder.getInstance().setDeviceTaskManagerService(null);
+    }
+
+    private RegistryService getRegistryService() throws RegistryException {
+        RealmService realmService = new InMemoryRealmService();
+        RegistryDataHolder.getInstance().setRealmService(realmService);
+        DeviceManagementDataHolder.getInstance().setRealmService(realmService);
+        InputStream is = this.getClass().getClassLoader().getResourceAsStream("carbon-home/repository/conf/registry.xml");
+        RegistryContext context = RegistryContext.getBaseInstance(is, realmService);
+        context.setSetup(true);
+        return context.getEmbeddedRegistryService();
+    }
+
     @BeforeClass
     public abstract void init() throws Exception;
 
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/operation/OperationManagementTests.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/operation/OperationManagementTests.java
index 3107e0448bc..dd0550e4a30 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/operation/OperationManagementTests.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/operation/OperationManagementTests.java
@@ -87,18 +87,12 @@ public class OperationManagementTests {
 
     @BeforeClass
     public void init() throws Exception {
-        DeviceConfigurationManager.getInstance().initConfig();
         for (int i = 0; i < NO_OF_DEVICES; i++) {
             deviceIds.add(new DeviceIdentifier(DEVICE_ID_PREFIX + i, DEVICE_TYPE));
         }
         List<Device> devices = TestDataHolder.generateDummyDeviceData(this.deviceIds);
-        DeviceManagementProviderService deviceMgtService = new DeviceManagementProviderServiceImpl();
-        DeviceManagementServiceComponent.notifyStartupListeners();
-        DeviceManagementDataHolder.getInstance().setDeviceManagementProvider(deviceMgtService);
-        DeviceManagementDataHolder.getInstance().setRegistryService(getRegistryService());
-        DeviceManagementDataHolder.getInstance().setDeviceAccessAuthorizationService(new DeviceAccessAuthorizationServiceImpl());
-        DeviceManagementDataHolder.getInstance().setGroupManagementProviderService(new GroupManagementProviderServiceImpl());
         DeviceManagementDataHolder.getInstance().setDeviceTaskManagerService(null);
+        DeviceManagementProviderService deviceMgtService = DeviceManagementDataHolder.getInstance().getDeviceManagementProvider();
         deviceMgtService.registerDeviceType(new TestDeviceManagementService(DEVICE_TYPE,
                 MultitenantConstants.SUPER_TENANT_DOMAIN_NAME));
         for (Device device : devices) {
@@ -114,15 +108,7 @@ public class OperationManagementTests {
         this.operationMgtService = new OperationManagerImpl(DEVICE_TYPE, notificationStrategy);
     }
 
-    private RegistryService getRegistryService() throws RegistryException {
-        RealmService realmService = new InMemoryRealmService();
-        RegistryDataHolder.getInstance().setRealmService(realmService);
-        DeviceManagementDataHolder.getInstance().setRealmService(realmService);
-        InputStream is = this.getClass().getClassLoader().getResourceAsStream("carbon-home/repository/conf/registry.xml");
-        RegistryContext context = RegistryContext.getBaseInstance(is, realmService);
-        context.setSetup(true);
-        return context.getEmbeddedRegistryService();
-    }
+
 
     @Test
     public void addCommandOperation() throws DeviceManagementException, OperationManagementException, InvalidDeviceException {