Testing the Web Server

Explore how to test the web server layer of a Deno application by creating unit tests that spin up the server, mock dependencies, and validate HTTP responses. Understand how to manage server lifecycle in tests to avoid resource leaks and ensure your web interface performs as expected.

We'll cover the following...

Creating a web module’s unit test

Previously, we wrote a unit test and an integration test, but we still haven’t written any tests for our application’s interface—the web part of it, which is using HTTP. That’s what we’ll do in this lesson. We’ll learn how can we test the logic living in the web layer in isolation, without using any other modules.

So far, we have learned how to test different parts of the application. We started with the business logic, which tests how it integrated with the modules that interacted with persistency (the repository), but the web layer still has no tests.

It’s true that those tests ...

1.What Is Deno?

2.The Toolchain

3.The Runtime and Standard Library

4.Building a Web Application

5.Adding Users and Migrating to Oak

6.Adding Authentication and Connecting to the Database

7.HTTPS, Extracting Configuration, and Deno in the Browser

8.Unit and Integration Testing

9.Deploying a Deno Application using Local Machine

10.Conclusion

11.Appendix

Testing the Web Server