diff --git a/components/org.wso2.carbon.identity.governance/src/test/java/org/wso2/carbon/identity/governance/listener/NotificationTemplateManagerTest.java b/components/org.wso2.carbon.identity.governance/src/test/java/org/wso2/carbon/identity/governance/listener/NotificationTemplateManagerTest.java
new file mode 100644
index 0000000000..913f246aaa
--- /dev/null
+++ b/components/org.wso2.carbon.identity.governance/src/test/java/org/wso2/carbon/identity/governance/listener/NotificationTemplateManagerTest.java
@@ -0,0 +1,171 @@
+package org.wso2.carbon.identity.governance.listener;
+
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+import org.wso2.carbon.identity.governance.exceptions.notiification.NotificationTemplateManagerException;
+import org.wso2.carbon.identity.governance.model.NotificationTemplate;
+import org.wso2.carbon.identity.governance.service.notification.NotificationTemplateManager;
+
+public class NotificationTemplateManagerTest {
+
+    private NotificationTemplateManager notificationTemplateManager;
+    private final String notificationChannel = "EMAIL";
+    private final String displayName = "Sample Template";
+    private final String tenantDomain = "carbon.super";
+    private final String locale = "en_US";
+    private final String applicationUuid = "app-1234";
+    private final NotificationTemplate notificationTemplate = new NotificationTemplate();
+
+    @BeforeTest
+    public void setUp() {
+        notificationTemplateManager = new NotificationTemplateManager() {
+            // No implementation needed, using default methods which throw UnsupportedOperationException
+        };
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testAddNotificationTemplateType() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.addNotificationTemplateType(notificationChannel, displayName, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testAddNotificationTemplateTypeWithAppId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.addNotificationTemplateType(notificationChannel, displayName, tenantDomain,
+                applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetAllNotificationTemplateTypes() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getAllNotificationTemplateTypes(notificationChannel, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testDeleteNotificationTemplateType() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.deleteNotificationTemplateType(notificationChannel, displayName, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testIsNotificationTemplateTypeExists() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.isNotificationTemplateTypeExists(notificationChannel, displayName, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testResetNotificationTemplateType() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.resetNotificationTemplateType(notificationChannel, displayName, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetAllNotificationTemplates() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getAllNotificationTemplates(notificationChannel, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetNotificationTemplatesOfType() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getNotificationTemplatesOfType(notificationChannel, displayName,
+                tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetNotificationTemplatesOfTypeWithApplicationId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getNotificationTemplatesOfType(notificationChannel, displayName,
+                tenantDomain, applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetNotificationTemplate() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getNotificationTemplate(notificationChannel, displayName, locale, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetNotificationTemplateWithApplicationId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getNotificationTemplate(notificationChannel, displayName, locale, tenantDomain,
+                applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testAddNotificationTemplate() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.addNotificationTemplate(notificationTemplate, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testAddNotificationTemplateWithApplicationId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.addNotificationTemplate(notificationTemplate, tenantDomain, applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testUpdateNotificationTemplate() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.updateNotificationTemplate(notificationTemplate, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testUpdateNotificationTemplateWithApplicationId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.updateNotificationTemplate(notificationTemplate, tenantDomain, applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testDeleteNotificationTemplate() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.deleteNotificationTemplate(notificationChannel, displayName, locale,
+                tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testDeleteNotificationTemplateWithApplicationId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.deleteNotificationTemplate(notificationChannel, displayName, locale,
+                tenantDomain, applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testAddDefaultNotificationTemplates() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.addDefaultNotificationTemplates(notificationChannel, tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetDefaultNotificationTemplates() {
+
+        notificationTemplateManager.getDefaultNotificationTemplates(notificationChannel);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testIsNotificationTemplateExists() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.isNotificationTemplateExists(notificationChannel, displayName, locale,
+                tenantDomain);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testIsNotificationTemplateExistsWithApplicationId() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.isNotificationTemplateExists(notificationChannel, displayName, locale,
+                tenantDomain, applicationUuid);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+    public void testGetAllSystemNotificationTemplatesOfType() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getAllSystemNotificationTemplatesOfType(notificationChannel, displayName);
+    }
+
+    @Test(expectedExceptions = UnsupportedOperationException.class)
+     public void testGetSystemNotificationTemplate() throws NotificationTemplateManagerException {
+
+        notificationTemplateManager.getSystemNotificationTemplate(notificationChannel, displayName, locale);
+    }
+}
diff --git a/components/org.wso2.carbon.identity.governance/src/test/resources/testng.xml b/components/org.wso2.carbon.identity.governance/src/test/resources/testng.xml
index c71153a736..6a4dc07448 100644
--- a/components/org.wso2.carbon.identity.governance/src/test/resources/testng.xml
+++ b/components/org.wso2.carbon.identity.governance/src/test/resources/testng.xml
@@ -25,6 +25,7 @@
         <classes>
             <class name="org.wso2.carbon.identity.governance.listener.IdentityMgtEventListenerTest"></class>
             <class name="org.wso2.carbon.identity.governance.listener.IdentityStoreEventListenerTest"></class>
+            <class name="org.wso2.carbon.identity.governance.listener.NotificationTemplateManagerTest"></class>
             <class name="org.wso2.carbon.identity.governance.internal.service.impl.notification.DefaultNotificationChannelManagerTest"/>
         </classes>
     </test>