Delve into Angular test skills with Jasmine. Gain insights into mocking HTTP requests, testing forms, and writing effective unit tests to build reliable applications and maintain them long-term.

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Jasmine is a popular framework used to test JavaScript and Angular applications. With the help of Jasmine, writing effective unit tests is quite easy and helps in building more reliable applications. 

The purpose of this course is to teach you how to read and write Jasmine unit tests. This course will focus on Angular test skills, including the ability to mock HTTP requests and test forms. Moreover, you will learn how to build real-world applications using Jasmine’s advanced features.

As a result of completing this course, you will be able to read existing unit tests, write your own tests, and be able to write better applications and the skills to maintain them for years to come.

Angular Testing with Jasmine

We need to test application login thoroughly because this is a critical piece of the system. In Angular, we usually have a login component that takes care of the appearance of the login form. This login component will delegate the authentication logic to an authentication class responsible for communicating with our server and storing our login details. We’ll need to write unit tests to cover the login form and unit tests to cover our authentication class.

# Login authentication using JWT

For authentication with JSON Web Tokens (JWT), we present the user with a login form, where they need to enter a username and password. We make an API request to pass these details to the server, which will validate the login request. If the login details are correct, the server will respond with a JWT token. The frontend needs to store this JWT token and use it to authenticate future requests to the server. When the frontend makes API requests to the server, it can simply pass the JWT token, which the server will verify. The frontend needs to store the JWT token using a solution such as a cookie, session storage, or local storage.

In short, when a JWT is received, our application must do the following actions:
- Store the JWT.
- Add the JWT to the request headers.

# JWTs

**JSON Web Tokens (JWTs)** are an industry standard used for authentication. The JWT is a string that consists of a header, a payload, and a verification signature:

- The **header** describes the hashing algorithm used to create the token.

- The **payload** contains a small amount of information about the logged-in user, for example, their user ID.

- The **verification signature** is used to check if the JWT is valid and to prevent tampering. The signature is simply a hash of the header, the payload, and a secret server-side key.

An attacker cannot generate fake JWTs because they do not have the secret key needed to create a valid signature.

> **Note:** The payload of a JWT is not encrypted, so it shouldn’t store sensitive data.

Learn how to write unit tests covering application login.

Introduction to the Course

Getting Started with Jasmine

Assessment: Getting Started with Jasmine

Testing Angular Applications

Assessment: Testing Angular Applications

Advanced Topics

Assessment: Advanced Topics

Jasmine Deep Dive

Conclusion

Appendix

Logging In

Login authentication using JWT

JWTs