Evaluating the parser for oauth2 implicit grant access_token using javascript

I am currently developing an Angular application that utilizes the implicit grant oauth strategy. In case I do not have a valid access token in my cookies, I am redirected to the web interface of the authentication server where I input my credentials and then get redirected back to my site with the access token included in the URL. My system then parses this token and stores it in the cookies.

Now, I am faced with the challenge of unit testing this parse function that extracts the access token from the authentication server. Seeking advice on the best approach, thus posting my query here:

1. How should I go about unit testing (without making direct requests to a live oauth server) a function that parses the access token?

2. What is the best practice for constructing URL parameters with the access token? Is it secure to use the current access token for testing purposes?

3. Are there any libraries available that can assist in creating mock access token objects?

Answer №1

If you're looking to simplify OAuth, you may consider utilizing the service provided in the link below. This tool is designed for basic OAuth functionality and is particularly useful for integration testing purposes.

For those who are strict unit-testing enthusiasts, it's possible to incorporate this into your app's unit test code by creating a fork.

https://github.com/zalando-stups/mocks/tree/master/oauth2-provider

If you're feeling stuck, here's a solution to help you out :)

Answer №2

Following discussions with the creators of my oAuth authentication service, I gained valuable insights into the data sent by the server upon successful authentication. My fears regarding security breaches were alleviated when I learned that altering the hash would render the access token invalid since it is generated using a private key on the server side.

The response structure from the oAuth server includes: header.access_token.hash

To test my token-parsing-function, I modified the header and hash sections while also changing the encoded user name for testing purposes only. This adjustment enabled me to verify that my function correctly utilizes the access_token part of the request.

This solution addresses my concerns and I hope it proves helpful to others facing similar challenges.

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