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Build Your Own Web Framework in Elixir

You're reading from   Build Your Own Web Framework in Elixir Develop lightning-fast web applications using Phoenix and metaprogramming

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Product type Paperback
Published in Jun 2023
Publisher Packt
ISBN-13 9781801812542
Length 274 pages
Edition 1st Edition
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Author (1):
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Aditya Iyengar Aditya Iyengar
Author Profile Icon Aditya Iyengar
Aditya Iyengar
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Toc

Table of Contents (15) Chapters Close

Preface 1. Part 1: Web Server Fundamentals
2. Chapter 1: Introducing the Cowboy Web Server FREE CHAPTER 3. Chapter 2: Building an HTTP Server in Elixir 4. Part 2: Router, Controller, and View
5. Chapter 3: Defining Web Application Specifications Using Plug 6. Chapter 4: Working with Controllers 7. Chapter 5: Adding Controller Plugs and Action Fallback 8. Chapter 6: Working with HTML and Embedded Elixir 9. Chapter 7: Working with Views 10. Part 3: DSL Design
11. Chapter 8: Metaprogramming – Code That Writes Code 12. Chapter 9: Controller and View DSL 13. Chapter 10: Building the Router DSL 14. Index

Testing the HTTP server

Now that we have all the ingredients to write an HTTP server, it’s time to write some tests. I will only cover some necessary tests in this chapter. If you are curious about which other tests we could write, feel free to check out the code for goldcrest_http_server, linked in the book’s GitHub repository.

In order to test our HTTP server, we will first need to make two changes to the mix.exs file, as follows:

  • Add Finch to the list of dependencies: This allows us to make HTTP calls to our server’s endpoints.
  • Update elixirc_paths: This updates the list of paths that need to be compiled as part of the project. Moreover, by defining those paths based on the Mix environment, Mix allows us to compile support modules in the test environment, one of which would be a TestResponder module.

Let’s go ahead and make these changes:

mix.exs

defmoduleGoldcrestHttpServer.MixProject do
  use Mix.Project
 ...
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