diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml b/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml
index af555a7b9ca..04949389ac2 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/pom.xml
@@ -163,6 +163,11 @@
             <groupId>org.wso2.carbon.devicemgt</groupId>
             <artifactId>org.wso2.carbon.device.mgt.common</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-api-mockito</artifactId>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>org.wso2.carbon.devicemgt</groupId>
             <artifactId>org.wso2.carbon.device.mgt.analytics.data.publisher</artifactId>
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestTaskServiceImpl.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestTaskServiceImpl.java
index 7210942ca53..882cc266f6d 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestTaskServiceImpl.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestTaskServiceImpl.java
@@ -17,73 +17,30 @@
 */
 package org.wso2.carbon.device.mgt.core;
 
+import org.wso2.carbon.device.mgt.core.task.TestTaskManagerImpl;
 import org.wso2.carbon.ntask.common.TaskException;
 import org.wso2.carbon.ntask.core.TaskInfo;
 import org.wso2.carbon.ntask.core.TaskManager;
 import org.wso2.carbon.ntask.core.service.TaskService;
 
+import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
 public class TestTaskServiceImpl implements TaskService {
-    @Override
-    public TaskManager getTaskManager(String s) throws TaskException {
-        return new TaskManager() {
-            @Override
-            public void initStartupTasks() throws TaskException {
-
-            }
-
-            @Override
-            public void scheduleTask(String s) throws TaskException {
-
-            }
-
-            @Override
-            public void rescheduleTask(String s) throws TaskException {
-
-            }
-
-            @Override
-            public boolean deleteTask(String s) throws TaskException {
-                return false;
-            }
-
-            @Override
-            public void pauseTask(String s) throws TaskException {
-
-            }
+    private Set<String> registeredTaskTypes;
+    private TaskManager taskManager;
 
-            @Override
-            public void resumeTask(String s) throws TaskException {
+    public TestTaskServiceImpl() {
 
-            }
-
-            @Override
-            public void registerTask(TaskInfo taskInfo) throws TaskException {
-
-            }
-
-            @Override
-            public TaskState getTaskState(String s) throws TaskException {
-                return null;
-            }
-
-            @Override
-            public TaskInfo getTask(String s) throws TaskException {
-                return null;
-            }
-
-            @Override
-            public List<TaskInfo> getAllTasks() throws TaskException {
-                return null;
-            }
+        this.registeredTaskTypes = new HashSet<>();
+        this.taskManager = new TestTaskManagerImpl();
+    }
 
-            @Override
-            public boolean isTaskScheduled(String s) throws TaskException {
-                return false;
-            }
-        };
+    @Override
+    public TaskManager getTaskManager(String s) throws TaskException {
+        return this.taskManager;
     }
 
     @Override
@@ -93,12 +50,12 @@ public class TestTaskServiceImpl implements TaskService {
 
     @Override
     public void registerTaskType(String s) throws TaskException {
-
+        this.registeredTaskTypes.add(s);
     }
 
     @Override
     public Set<String> getRegisteredTaskTypes() {
-        return null;
+        return this.registeredTaskTypes;
     }
 
     @Override
@@ -108,7 +65,7 @@ public class TestTaskServiceImpl implements TaskService {
 
     @Override
     public boolean isServerInit() {
-        return false;
+        return true;
     }
 
     @Override
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestUtils.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestUtils.java
index 1a216461506..29aad743c83 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestUtils.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/TestUtils.java
@@ -22,7 +22,15 @@ import org.apache.commons.logging.LogFactory;
 import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
 import org.wso2.carbon.device.mgt.common.GroupPaginationRequest;
 import org.wso2.carbon.device.mgt.common.group.mgt.DeviceGroup;
-
+import org.wso2.carbon.device.mgt.core.internal.DeviceManagementDataHolder;
+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 java.io.InputStream;
 import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
@@ -58,7 +66,6 @@ public class TestUtils {
         }
     }
 
-
     public static DeviceGroup createDeviceGroup1(){
         DeviceGroup group = new DeviceGroup();
         group.setName("TEST_GROUP_01");
@@ -108,4 +115,14 @@ public class TestUtils {
 
         return list;
     }
+
+    public static RegistryService getRegistryService(Class clazz) throws RegistryException {
+        RealmService realmService = new InMemoryRealmService();
+        RegistryDataHolder.getInstance().setRealmService(realmService);
+        DeviceManagementDataHolder.getInstance().setRealmService(realmService);
+        InputStream is = clazz.getClassLoader().getResourceAsStream("carbon-home/repository/conf/registry.xml");
+        RegistryContext context = RegistryContext.getBaseInstance(is, realmService);
+        context.setSetup(true);
+        return context.getEmbeddedRegistryService();
+    }
 }
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/DeviceTaskManagerServiceTest.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/DeviceTaskManagerServiceTest.java
new file mode 100644
index 00000000000..2db940a4ec9
--- /dev/null
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/DeviceTaskManagerServiceTest.java
@@ -0,0 +1,124 @@
+package org.wso2.carbon.device.mgt.core.task;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.opensaml.xml.signature.P;
+import org.powermock.api.mockito.PowerMockito;
+import org.quartz.impl.StdSchedulerFactory;
+import org.testng.Assert;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+import org.wso2.carbon.device.mgt.common.MonitoringOperation;
+import org.wso2.carbon.device.mgt.common.OperationMonitoringTaskConfig;
+import org.wso2.carbon.device.mgt.core.TestTaskServiceImpl;
+import org.wso2.carbon.device.mgt.core.TestUtils;
+import org.wso2.carbon.device.mgt.core.common.TestDataHolder;
+import org.wso2.carbon.device.mgt.core.config.DeviceConfigurationManager;
+import org.wso2.carbon.device.mgt.core.internal.DeviceManagementDataHolder;
+import org.wso2.carbon.device.mgt.core.permission.mgt.PermissionUtils;
+import org.wso2.carbon.device.mgt.core.service.DeviceManagementProviderServiceImpl;
+import org.wso2.carbon.device.mgt.core.task.impl.DeviceTaskManagerServiceImpl;
+import org.wso2.carbon.ntask.common.TaskException;
+import org.wso2.carbon.ntask.core.TaskInfo;
+import org.wso2.carbon.ntask.core.TaskManager;
+import org.wso2.carbon.ntask.core.TaskUtils;
+import org.wso2.carbon.ntask.core.impl.QuartzCachedThreadPool;
+import org.wso2.carbon.ntask.core.internal.TasksDSComponent;
+import org.wso2.carbon.ntask.core.service.TaskService;
+import org.wso2.carbon.ntask.core.service.impl.TaskServiceImpl;
+import org.wso2.carbon.registry.core.exceptions.RegistryException;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Properties;
+
+public class DeviceTaskManagerServiceTest {
+    private static final Log log = LogFactory.getLog(DeviceTaskManagerService.class);
+    private static final String TASK_TYPE = "DEVICE_MONITORING";
+    private DeviceTaskManagerService deviceTaskManagerService;
+    @Mock private TaskService taskService;
+
+    @BeforeClass public void init() throws Exception {
+        DeviceConfigurationManager.getInstance().initConfig();
+        log.info("Initializing Device Task Manager Service Test Suite");
+        this.taskService = new TestTaskServiceImpl();
+        DeviceManagementDataHolder.getInstance().setTaskService(this.taskService);
+        this.deviceTaskManagerService = new DeviceTaskManagerServiceImpl();
+        DeviceManagementDataHolder.getInstance().setDeviceTaskManagerService(this.deviceTaskManagerService);
+        Field taskServiceField = TasksDSComponent.class.getDeclaredField("taskService");
+        taskServiceField.setAccessible(true);
+        taskServiceField.set(null, Mockito.mock(TaskServiceImpl.class, Mockito.RETURNS_MOCKS));
+    }
+
+    @Test(groups = "Device Task Manager")
+    public void testStartTask() {
+        try {
+            log.debug("Attempting to start task from testStartTask");
+            this.deviceTaskManagerService
+                    .startTask(TestDataHolder.TEST_DEVICE_TYPE, generateValidMonitoringTaskConfig("DEVICE_INFO"));
+            TaskManager taskManager = this.taskService.getTaskManager(TASK_TYPE);
+            Assert.assertEquals(this.taskService.getRegisteredTaskTypes().size(), 1);
+            Assert.assertNotNull(taskManager
+                    .getTask(TestDataHolder.TEST_DEVICE_TYPE + String.valueOf(TestDataHolder.SUPER_TENANT_ID)));
+            log.debug("Task Successfully started");
+        } catch (DeviceMgtTaskException | TaskException e) {
+            Assert.fail("Exception occurred when starting the task", e);
+        }
+    }
+
+    @Test(groups = "Device Task Manager", dependsOnMethods = "testStartTask")
+    public void testUpdateTask() {
+        try {
+            log.debug("Attempting to update task from testStartTask");
+            this.deviceTaskManagerService
+                    .updateTask(TestDataHolder.TEST_DEVICE_TYPE, generateValidMonitoringTaskConfig("DEVICE_LOCATION"));
+            Assert.assertEquals(this.taskService.getRegisteredTaskTypes().size(), 1);
+            TaskManager taskManager = this.taskService.getTaskManager(TASK_TYPE);
+            Assert.assertEquals(taskManager.getAllTasks().size(), 1);
+            log.debug("Task Successfully updated");
+        } catch (DeviceMgtTaskException | TaskException e) {
+            Assert.fail("Exception occurred when updating the task", e);
+        }
+    }
+
+    @Test(groups = "Device Task Manager", dependsOnMethods = "testUpdateTask")
+    public void testStopTask() {
+        log.debug("Attempting to stop task from testStopTask");
+        try {
+            this.deviceTaskManagerService
+                    .stopTask(TestDataHolder.TEST_DEVICE_TYPE, generateValidMonitoringTaskConfig("DEVICE_LOCATION"));
+            TaskManager taskManager = this.taskService.getTaskManager(TASK_TYPE);
+            Assert.assertEquals(taskManager.getAllTasks().size(), 0);
+        } catch (DeviceMgtTaskException | TaskException e) {
+            Assert.fail("Exception occurred when stopping the task", e);
+        }
+    }
+
+
+
+    private OperationMonitoringTaskConfig generateValidMonitoringTaskConfig(String operationConfig) {
+        OperationMonitoringTaskConfig validTaskConfig = new OperationMonitoringTaskConfig();
+        List<MonitoringOperation> operationList = new ArrayList<>();
+        MonitoringOperation operation = new MonitoringOperation();
+        operation.setTaskName(operationConfig);
+        operation.setRecurrentTimes(1);
+        operationList.add(operation);
+
+        validTaskConfig.setEnabled(true);
+        validTaskConfig.setFrequency(60000);
+        validTaskConfig.setMonitoringOperation(operationList);
+
+        return validTaskConfig;
+    }
+
+    private Properties getStandardQuartzProps() {
+        Properties result = new Properties();
+        result.put("org.quartz.scheduler.skipUpdateCheck", "true");
+        result.put("org.quartz.threadPool.class", QuartzCachedThreadPool.class.getName());
+        return result;
+    }
+}
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/TestTaskManagerImpl.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/TestTaskManagerImpl.java
new file mode 100644
index 00000000000..fcebed343c1
--- /dev/null
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/java/org/wso2/carbon/device/mgt/core/task/TestTaskManagerImpl.java
@@ -0,0 +1,82 @@
+package org.wso2.carbon.device.mgt.core.task;
+
+import org.wso2.carbon.ntask.common.TaskException;
+import org.wso2.carbon.ntask.core.TaskInfo;
+import org.wso2.carbon.ntask.core.TaskManager;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TestTaskManagerImpl implements TaskManager {
+    private List<TaskInfo> registeredTasks;
+
+    public TestTaskManagerImpl() {
+        this.registeredTasks = new ArrayList<>();
+    }
+
+    @Override
+    public void initStartupTasks() throws TaskException {
+
+    }
+
+    @Override
+    public void scheduleTask(String taskName) throws TaskException {
+
+    }
+
+    @Override
+    public void rescheduleTask(String taskName) throws TaskException {
+
+    }
+
+    @Override
+    public boolean deleteTask(String taskName) throws TaskException {
+        for (TaskInfo task : this.registeredTasks) {
+            if (task.getName().contains(taskName)) {
+                this.registeredTasks.remove(task);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public void pauseTask(String taskName) throws TaskException {
+
+    }
+
+    @Override
+    public void resumeTask(String taskName) throws TaskException {
+
+    }
+
+    @Override
+    public void registerTask(TaskInfo taskInfo) throws TaskException {
+        this.registeredTasks.add(taskInfo);
+    }
+
+    @Override
+    public TaskState getTaskState(String taskName) throws TaskException {
+        return null;
+    }
+
+    @Override
+    public TaskInfo getTask(String taskName) throws TaskException {
+        for (TaskInfo task : this.registeredTasks) {
+            if (task.getName().contains(taskName)) {
+                return task;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public List<TaskInfo> getAllTasks() throws TaskException {
+        return this.registeredTasks;
+    }
+
+    @Override
+    public boolean isTaskScheduled(String taskName) throws TaskException {
+        return this.registeredTasks.size() > 0;
+    }
+}
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/carbon-home/repository/conf/etc/tasks-config.xml b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/carbon-home/repository/conf/etc/tasks-config.xml
new file mode 100644
index 00000000000..0a9289da708
--- /dev/null
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/carbon-home/repository/conf/etc/tasks-config.xml
@@ -0,0 +1,51 @@
+<tasks-configuration xmlns:svns="http://org.wso2.securevault/configuration">
+
+    <!--
+      The currently running server mode; possible values are:-
+      STANDALONE, CLUSTERED, REMOTE, AUTO.
+      In AUTO mode, the server startup checks whether clustering is enabled in the system,
+      if so, CLUSTERED mode will be used, or else, the the server mode will be STANDALONE.
+    -->
+    <taskServerMode>STANDALONE</taskServerMode>
+
+    <!--
+      To be used in CLUSTERED mode to notify how many servers are there in
+      the task server cluster, the servers wait till this amount of servers
+      are activated before the tasks are scheduled -->
+    <taskServerCount>2</taskServerCount>
+
+    <!-- The default location resolver configuration -->
+    <defaultLocationResolver>
+        <locationResolverClass>org.wso2.carbon.ntask.core.impl.RoundRobinTaskLocationResolver</locationResolverClass>
+    </defaultLocationResolver>
+
+    <!--
+      if task-type-pattern matches and task-name-pattern matches, check existing addresses of address-pattern,
+      and if addresses exist, select address in round-robin fashion, if not move onto next rule in sequence.
+      <property name="rule-[order]">[task-type-pattern],[task-name-pattern],[address-pattern]</property>
+    -->
+    <!--defaultLocationResolver>
+        <locationResolverClass>org.wso2.carbon.ntask.core.impl.RuleBasedLocationResolver</locationResolverClass>
+        <properties>
+            <property name="rule-1">HIVE_TASK,.*,192.168.2.*</property>
+            <property name="rule-5">.*,.*,.*</property>
+        </properties>
+    </defaultLocationResolver-->
+
+    <!-- The address to which the remote task server should dispatch the trigger messages to,
+      usually this would be an endpoint to a load balancer -->
+    <taskClientDispatchAddress>https://localhost:9448</taskClientDispatchAddress>
+
+    <!-- The address of the remote task server -->
+    <remoteServerAddress>https://localhost:9443</remoteServerAddress>
+
+    <!-- The username to authenticate to the remote task server -->
+    <remoteServerUsername>admin</remoteServerUsername>
+
+    <!-- The password to authenticate to the remote task server -->
+    <remoteServerPassword>admin</remoteServerPassword>
+
+    <!-- Below contain a sample to be used when using with secure vault -->
+    <!--remoteServerPassword svns:secretAlias="remote.task.server.password"></remoteServerPassword-->
+
+</tasks-configuration>
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/testng.xml b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/testng.xml
index 7ab82eaf075..b77715ab91b 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/testng.xml
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/test/resources/testng.xml
@@ -44,6 +44,7 @@
             <class name="org.wso2.carbon.device.mgt.core.operation.OperationManagementTests"/>
             <class name="org.wso2.carbon.device.mgt.core.permission.mgt.PermissionManagerServiceTest" />
             <class name="org.wso2.carbon.device.mgt.core.notification.mgt.NotificationManagementServiceImplTests"/>
+            <class name="org.wso2.carbon.device.mgt.core.task.DeviceTaskManagerServiceTest"/>
         </classes>
     </test>
 </suite>