Book Image

Rust Web Development with Rocket

By : Karuna Murti
Book Image

Rust Web Development with Rocket

By: Karuna Murti

Overview of this book

Looking for a fast, powerful, and intuitive framework to build web applications? This Rust book will help you kickstart your web development journey and take your Rust programming skills to the next level as you uncover the power of Rocket - a fast, flexible, and fun framework powered by Rust. Rust Web Development with Rocket wastes no time in getting you up to speed with what Rust is and how to use it. You’ll discover what makes it so productive and reliable, eventually mastering all of the concepts you need to play with the Rocket framework while developing a wide set of web development skills. Throughout this book, you'll be able to walk through a hands-on project, covering everything that goes into making advanced web applications, and get to grips with the ins and outs of Rocket development, including error handling, Rust vectors, and wrappers. You'll also learn how to use synchronous and asynchronous programming to improve application performance and make processing user content easy. By the end of the book, you'll have answers to all your questions about creating a web application using the Rust language and the Rocket web framework.
Table of Contents (20 chapters)
1
Part 1: An Introduction to the Rust Programming Language and the Rocket Web Framework
7
Part 2: An In-Depth Look at Rocket Web Application Development
14
Part 3: Finishing the Rust Web Application Development

Testing the Rust program

One important part of programming is testing the application. There are many kinds of tests, such as unit tests (to test a single function or method), functional tests (to test the function of an application), and integration testing (to test various units and functions as a single combined entity). Various tests should be conducted in order to make the application as correct as intended.

In the Rust standard library, there are three macros to use in testing: assert!, assert_eq!, and assert_ne!. The assert! macro accepts one or more parameters. The first parameter is any statement that evaluates to Boolean, and the rest is for debugging if the result is not what is expected.

The assert_eq! macro compares equality between the first parameter and second parameter, and the rest is for debugging if the result is not what is expected. The assert_ne! macro is the opposite of assert_eq!; this macro tests the inequality between the first and the second parameters...