Gain insights into Jest, a versatile testing framework. Learn about fundamental and advanced testing techniques, from unit tests to CI/CD integration, for comprehensive JavaScript application testing.

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Jest is a framework for testing applications developed in JavaScript. It has a well-documented and well-maintained range of tools to run tests in parallel. It is simple and works with projects using Babel, TypeScript, Node, React, Angular, Vue, etc. It works well for both client and server testing. 

This course covers Jest in-depth and is agnostic of any specific JavaScript framework. The course begins with the fundamentals of Jest testing, deconstructing the components of a test and covering how to compose basic unit tests and snapshot tests with Jest correctly. Next, it shows the testing of asynchronous code and the code that relies on external dependencies. Lastly, this course illustrates how Jest testing can effectively integrate into the real-world software development cycle through CI/CD pipeline.

It gives you hands-on experience in setting up Jest, types of testing, testing coverage, mocking, and native tooling depth.

…. To come 

… to come 

Mastering Jest: A Complete Guide to Testing

## Considerations in server mocks
Servers, in the highest level sense, have a few main responsibilities. First and foremost, they manage the request and response cycle. They accept incoming requests, route them, process them, and then send the appropriate response back. Everything else that they do (for the most part) is in service to this. Secondly, servers perform the logic necessary to fulfill these requests. This might include validating the incoming request, parsing and transforming data, and catching and performing authorization checks. Last, servers get the data needed to fulfill requests. This might be through the querying of a database or communicating with yet another server. In any case, they get the data needed to fulfill the request made.


# Considerations in server mocks
Servers, in the highest level sense, have a few main responsibilities. First and foremost, they manage the request and response cycle. They accept incoming requests, route them, process them, and then send the appropriate response back. Everything else that they do (for the most part) is in service to this. Secondly, servers perform the logic necessary to fulfill these requests. This might include validating the incoming request, parsing and transforming data, and catching and performing authorization checks. Last, servers get the data needed to fulfill requests. This might be through the querying of a database or communicating with yet another server. In any case, they get the data needed to fulfill the request made.


Learn some quick tips for creating mocks for our server-side code.


Server Mock Tips

Learn some quick tips for creating mocks for our server-side code.

Introduction

Setting Up Jest

Jest Matchers

Writing Unit Tests

Writing Snapshot Tests

Asynchronous Code

Mocking

Mocking External Libraries

Working with Jest Mocks

Setup & Teardown

Test Coverage & CI/CD Pipelines

Test Coverage in Jest

Conclusion

Bonus: Best Practices

Bonus: Resources for Continued Learning

Appendix

Server Mock Tips

Considerations in server mocks