diff --git a/e2e/core/viewer/viewer-component.e2e.ts b/e2e/core/viewer/viewer-component.e2e.ts
index d40764da71..88ce3a2207 100644
--- a/e2e/core/viewer/viewer-component.e2e.ts
+++ b/e2e/core/viewer/viewer-component.e2e.ts
@@ -23,6 +23,7 @@ import { NavigationBarPage } from '../../pages/adf/navigationBarPage';
 import { ContentServicesPage } from '../../pages/adf/contentServicesPage';
 import { ContentListPage } from '../../pages/adf/dialog/contentListPage';
 import { ShareDialog } from '../../pages/adf/dialog/shareDialog';
+import { AboutPage } from '../../pages/adf/demo-shell/aboutPage';
 
 import CONSTANTS = require('../../util/constants');
 import resources = require('../../util/resources');
@@ -35,6 +36,7 @@ import { AcsUserModel } from '../../models/ACS/acsUserModel';
 import AlfrescoApi = require('alfresco-js-api-node');
 import { UploadActions } from '../../actions/ACS/upload.actions';
 import { browser } from 'protractor';
+import { viewWrappedDebugError } from '@angular/core/src/view/errors';
 
 xdescribe('Viewer', () => {
 
@@ -48,6 +50,7 @@ xdescribe('Viewer', () => {
     let pngFileUploaded;
     const contentList = new ContentListPage();
     const shareDialog = new ShareDialog();
+    const about = new AboutPage();
 
     let pngFileInfo = new FileModel({
         'name': resources.Files.ADF_DOCUMENTS.PNG.file_name,
@@ -452,4 +455,45 @@ xdescribe('Viewer', () => {
             });
         });
     });
+
+    describe('Viewer - Code editor extension', () => {
+
+        let jsFileInfo = new FileModel({
+            'name': resources.Files.ADF_DOCUMENTS.JS.file_name,
+            'location': resources.Files.ADF_DOCUMENTS.JS.file_location
+        });
+
+        let jsFileUploaded;
+
+        beforeAll(async (done) => {
+            await this.alfrescoJsApi.login(acsUser.id, acsUser.password);
+
+            jsFileUploaded = await uploadActions.uploadFile(this.alfrescoJsApi, jsFileInfo.location, jsFileInfo.name, '-my-');
+
+            loginPage.loginToContentServicesUsingUserModel(acsUser);
+
+            done();
+        });
+
+        afterAll(async (done) => {
+            await this.alfrescoJsApi.login(acsUser.id, acsUser.password);
+            await uploadActions.deleteFilesOrFolder(this.alfrescoJsApi, jsFileUploaded.entry.id);
+            done();
+        });
+
+        it('[C297698] Should be able to add an extension for code editor viewer', () => {
+            navigationBarPage.checkAboutButtonIsDisplayed();
+            navigationBarPage.clickAboutButton();
+
+            about.checkMonacoPluginIsDisplayed();
+
+            navigationBarPage.clickContentServicesButton();
+
+            contentServicesPage.waitForTableBody();
+            contentServicesPage.checkContentIsDisplayed(jsFileInfo.name);
+            contentServicesPage.doubleClickRow(jsFileInfo.name);
+
+            viewerPage.checkCodeViewerIsDisplayed();
+        });
+    });
 });
diff --git a/e2e/pages/adf/demo-shell/aboutPage.ts b/e2e/pages/adf/demo-shell/aboutPage.ts
new file mode 100644
index 0000000000..3b506fed58
--- /dev/null
+++ b/e2e/pages/adf/demo-shell/aboutPage.ts
@@ -0,0 +1,28 @@
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * 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.
+ */
+
+import { by, element } from 'protractor';
+import { Util } from '../../../util/util';
+
+export class AboutPage {
+
+    monacoPlugin = element(by.cssContainingText('mat-row > mat-cell', 'monaco plugin'));
+
+    checkMonacoPluginIsDisplayed() {
+        return Util.waitUntilElementIsVisible(this.monacoPlugin);
+    }
+}
diff --git a/e2e/pages/adf/navigationBarPage.ts b/e2e/pages/adf/navigationBarPage.ts
index c12d103a49..442f338635 100644
--- a/e2e/pages/adf/navigationBarPage.ts
+++ b/e2e/pages/adf/navigationBarPage.ts
@@ -46,6 +46,7 @@ export class NavigationBarPage {
     iconsButton = element(by.css('a[data-automation-id="Icons"]'));
     customSourcesButton = element(by.css('a[data-automation-id="Custom Sources"]'));
     settingsButton = element(by.css('a[data-automation-id="Settings"]'));
+    aboutButton = element(by.css('a[data-automation-id="About"]'));
 
     navigateToDatatable() {
         Util.waitUntilElementIsVisible(this.dataTableButton);
@@ -151,6 +152,15 @@ export class NavigationBarPage {
         return this.headerDataButton.click();
     }
 
+    clickAboutButton() {
+        Util.waitUntilElementIsClickable(this.aboutButton);
+        return this.aboutButton.click();
+    }
+
+    checkAboutButtonIsDisplayed() {
+        return Util.waitUntilElementIsVisible(this.aboutButton);
+    }
+
     checkMenuButtonIsDisplayed() {
         return Util.waitUntilElementIsVisible(this.menuButton);
     }
diff --git a/e2e/pages/adf/viewerPage.ts b/e2e/pages/adf/viewerPage.ts
index a131f5661f..08b12ff915 100644
--- a/e2e/pages/adf/viewerPage.ts
+++ b/e2e/pages/adf/viewerPage.ts
@@ -95,6 +95,12 @@ export class ViewerPage {
     timeButton = element(by.id('adf-viewer-time'));
     bugButton = element(by.id('adf-viewer-bug'));
 
+    codeViewer = element(by.id('adf-monaco-file-editor'));
+
+    checkCodeViewerIsDisplayed() {
+        return Util.waitUntilElementIsVisible(this.codeViewer);
+    }
+
     viewFile(fileName) {
         let fileView = element.all(by.css(`#document-list-container div[filename="${fileName}"]`)).first();
         Util.waitUntilElementIsVisible(fileView);
diff --git a/e2e/resources/adf/a_js_file.js b/e2e/resources/adf/a_js_file.js
new file mode 100644
index 0000000000..09d1b2f0bc
--- /dev/null
+++ b/e2e/resources/adf/a_js_file.js
@@ -0,0 +1 @@
+tiw tiw
\ No newline at end of file
diff --git a/e2e/util/resources.js b/e2e/util/resources.js
index 963165d2b3..c1ec69a40d 100644
--- a/e2e/util/resources.js
+++ b/e2e/util/resources.js
@@ -323,6 +323,10 @@ exports.Files = {
     },
 
     ADF_DOCUMENTS: {
+        JS: {
+            file_location: "/resources/adf/a_js_file.js",
+            file_name: "a_js_file.js"
+        },
         PDF: {
             file_location: "/resources/adf/allFileTypes/a_file_supported.pdf",
             file_name: "a_file_supported.pdf",