---
title: "Test the Application"
url: https://docs.catalyst.zoho.com/en/tutorials/third-party-auth/nodejs/test-app/
description: "Integrate Auth0 SPA authentication service with basic web applications hosted on Catalyst using OpenID Connect and 0Auth2.0 authentication protocols."
last_updated: 2026-08-17T12:16:04Z
service: All Services
type: tutorial
related_links:
  - name: "Third-party Authentication type"
    url: /en/cli/v1/initialize-resources/introduction
  - name: "CLI Serve Resources"
    url: /en/cli/v1/serve-resources/introduction/
  - name: "Third-party Authentication SDK"
    url: /en/sdk/web/v4/cloud-scale/authentication/third-party-custom-token/
  - name: "Auth0 Help Documentation"
    url: https://auth0.com/docs
---

# Test the Application

You can test the functionality of your application on a local server using the Catalyst CLI.

> **Info:** [Learn more about server resources](https://docs.catalyst.zoho.com/en/cli/v1/serve-resources/introduction).

To server the Catalyst project locally, execute the following command in your Catalyst CLI:

```sh
catalyst serve
```

The application will typically be served in the default `port 3000`. The local endpoint URLs of the components will be displayed in the CLI.

![catalyst_tutorials_third_party_auth0_serve_cli](https://catalyst-docs-development.zohostratus.in/images/tutorials/third-party-auth/catalyst_tutorials_third_party_auth0_serve_cli.webp)

> **Note:**

- To ensure you are able to locally test your application, you need to add your local endpoint URIs in the Auth0 configuration section, for example:
    - `http:<span>//localhost:3000/app/index.html`
    - `http:<span>//localhost:3000/app/home.html`

- Every time you access the homepage or any of the sub-pages of your client, or the function, the CLI will display a live log of the accessed URL, along with the HTTP method that is used to access it.

You can now open the client component’s local URL in a browser to access the application. Click **Log in**.
![catalyst_tutorials_third_party_serve_1](https://catalyst-docs-development.zohostratus.in/images/tutorials/third-party-auth/catalyst_tutorials_third_party_serve_1.webp)

You will be directed to the Auth0 login elements. You can either input the required user details or attempt to sign in to the application using the **Google Social Login** button.
![catalyst_tutorials_third_party_serve_2](https://catalyst-docs-development.zohostratus.in/images/tutorials/third-party-auth/catalyst_tutorials_third_party_serve_2.webp)

Click the **Get Catalyst Logged in User Details** button to add the user details to the Catalyst backend.
![catalyst_tutorials_third_party_serve_3](https://catalyst-docs-development.zohostratus.in/images/tutorials/third-party-auth/catalyst_tutorials_third_party_serve_3.webp)

The user has now been authenticated using Auth0 and added their details have been added to the Catalyst backend.
![catalyst_tutorials_third_party_serve_4](https://catalyst-docs-development.zohostratus.in/images/tutorials/third-party-auth/catalyst_tutorials_third_party_serve_4.webp)

You can verify that the user has been added to your Catalyst application by navigating to the [User Management](https://docs.catalyst.zoho.com/en/cloud-scale/help/authentication/user-management/introduction/) section in the **Authentication** component.
![catalyst_tutorials_third_party_auth0_user_mgmt](https://catalyst-docs-development.zohostratus.in/images/tutorials/third-party-auth/catalyst_tutorials_third_party_auth0_user_mgmt.webp)

The application is working as intended.