diff --git a/spec/__mocks__/electron.ts b/spec/__mocks__/electron.ts
index a9c894e1..6b89d720 100644
--- a/spec/__mocks__/electron.ts
+++ b/spec/__mocks__/electron.ts
@@ -24,8 +24,9 @@ interface IIpcMain {
 interface IIpcRenderer {
     sendSync(event: any, cb: any): any;
     on(eventName: any, cb: any): void;
-    send(event: any, cb: any): void;
+    send(event: any, ...cb: any[]): void;
     removeListener(eventName: any, cb: any): void;
+    once(eventName: any, cb: any): void;
 }
 interface IPowerMonitor {
     querySystemIdleTime(): void;
@@ -91,15 +92,16 @@ export const ipcRenderer: IIpcRenderer = {
         }
         return null;
     },
-    send: (event, args) => {
+    send: (event, ...args) => {
         const senderEvent = {
             sender: {
-                send: (eventSend, arg) => {
-                    ipcEmitter.emit(eventSend, arg);
+                send: (eventSend, ...arg) => {
+                    ipcEmitter.emit(eventSend, ...arg);
                 },
             },
+            preventDefault: jest.fn(),
         };
-        ipcEmitter.emit(event, senderEvent, args);
+        ipcEmitter.emit(event, senderEvent, ...args);
     },
     on: (eventName, cb) => {
         ipcEmitter.on(eventName, cb);
@@ -107,12 +109,21 @@ export const ipcRenderer: IIpcRenderer = {
     removeListener: (eventName, cb) => {
         ipcEmitter.removeListener(eventName, cb);
     },
+    once: (eventName, cb) => {
+        ipcEmitter.on(eventName, cb);
+    },
 };
 
 export const shell = {
     openExternal: jest.fn(),
 };
 
+// tslint:disable-next-line:variable-name
+export const BrowserWindow = {
+    fromWebContents: (arg) => arg,
+    getAllWindows: jest.fn(() => []),
+};
+
 // tslint:disable-next-line:variable-name
 export const Menu = {
     buildFromTemplate: jest.fn(),
diff --git a/spec/childWindowHandle.spec.ts b/spec/childWindowHandle.spec.ts
new file mode 100644
index 00000000..84958c18
--- /dev/null
+++ b/spec/childWindowHandle.spec.ts
@@ -0,0 +1,90 @@
+import { handleChildWindow } from '../src/app/child-window-handler';
+import { windowHandler } from '../src/app/window-handler';
+import { injectStyles } from '../src/app/window-utils';
+import { ipcRenderer } from './__mocks__/electron';
+
+const getMainWindow = {
+    isDestroyed: jest.fn(() => false),
+    getBounds: jest.fn(() => {
+        return {
+            x: 11,
+            y: 22,
+        };
+    }),
+    isAlwaysOnTop: jest.fn(() => true),
+    setMenuBarVisibility: jest.fn(),
+    setAlwaysOnTop: jest.fn(),
+};
+
+
+jest.mock('../src/common/env', () => {
+    return {
+        isWindowsOS: true,
+        isMac: false,
+    };
+});
+
+jest.mock('../src/app/window-utils', () => {
+    return {
+        injectStyles: jest.fn(),
+        preventWindowNavigation: jest.fn(),
+    };
+});
+
+jest.mock('../src/app/window-handler', () => {
+    return {
+        windowHandler: {
+            url: 'https://test.symphony.com',
+            getMainWindow: jest.fn(() => {
+                return getMainWindow;
+            }),
+            openUrlInDefaultBrowser: jest.fn(),
+            addWindow: jest.fn(),
+        },
+    };
+});
+
+jest.mock('../src/app/window-actions', () => {
+    return {
+        monitorWindowActions: jest.fn(),
+    };
+});
+
+describe('child window handle', () => {
+    const frameName = { };
+    const disposition = 'new-window';
+    const newWinOptions = {
+        webPreferences: jest.fn(),
+        webContents: { ...ipcRenderer, ...getMainWindow, webContents: ipcRenderer},
+    };
+
+    it('should call `did-start-loading` correctly on WindowOS', () => {
+        const newWinUrl = 'about:blank';
+        const args = [newWinUrl, frameName, disposition, newWinOptions];
+        const spy = jest.spyOn(getMainWindow, 'setMenuBarVisibility');
+        handleChildWindow(ipcRenderer as any);
+        ipcRenderer.send('new-window', ...args);
+        ipcRenderer.send('did-start-loading');
+        expect(spy).toBeCalledWith(false);
+    });
+
+    it('should call `did-finish-load` correctly on WindowOS', () => {
+        const newWinUrl = 'about:blank';
+        const args = [newWinUrl, frameName, disposition, newWinOptions];
+        const spy = jest.spyOn(newWinOptions.webContents.webContents, 'send');
+        handleChildWindow(ipcRenderer as any);
+        ipcRenderer.send('new-window', ...args);
+        ipcRenderer.send('did-finish-load');
+        expect(spy).lastCalledWith('page-load', { isWindowsOS: true});
+        expect(injectStyles).toBeCalled();
+    });
+
+    it('should call `windowHandler.openUrlInDefaultBrowser` when url in invalid', () => { 
+        const newWinUrl = 'invalid';
+        const args = [newWinUrl, frameName, disposition, newWinOptions];
+        const spy = jest.spyOn(windowHandler, 'openUrlInDefaultBrowser');
+        handleChildWindow(ipcRenderer as any);
+        ipcRenderer.send('new-window', ...args);
+        expect(spy).toBeCalledWith('invalid');
+    });
+});