Fixing issues in the device management repository tests.

components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/DeviceManagementRepositoryTests.java

@@ -23,15 +23,22 @@ import org.testng.annotations.Test;
 import org.wso2.carbon.device.mgt.common.DeviceManagementException;
 import org.wso2.carbon.device.mgt.common.DeviceManager;
 import org.wso2.carbon.device.mgt.common.spi.DeviceManagementService;
+import org.wso2.carbon.device.mgt.core.common.BaseDeviceManagementTest;
 import org.wso2.carbon.device.mgt.core.common.TestDataHolder;
+import org.wso2.carbon.device.mgt.core.internal.DeviceManagementDataHolder;
+import org.wso2.carbon.device.mgt.core.task.impl.DeviceTaskManagerServiceImpl;
+import org.wso2.carbon.ntask.core.service.TaskService;
+import org.wso2.carbon.ntask.core.service.impl.TaskServiceImpl;
 
-public class DeviceManagementRepositoryTests {
+public class DeviceManagementRepositoryTests extends BaseDeviceManagementTest{
 
 	private DeviceManagementPluginRepository repository;
 
 	@BeforeClass
-	public void initRepository() {
+	@Override
+	public void init() throws Exception {
 		this.repository = new DeviceManagementPluginRepository();
+		DeviceManagementDataHolder.getInstance().setDeviceTaskManagerService(new DeviceTaskManagerServiceImpl());
 	}
 
 	@Test