Book Image

The Complete Rust Programming Reference Guide

By : Rahul Sharma, Vesa Kaihlavirta, Claus Matzinger
Book Image

The Complete Rust Programming Reference Guide

By: Rahul Sharma, Vesa Kaihlavirta, Claus Matzinger

Overview of this book

Rust is a powerful language with a rare combination of safety, speed, and zero-cost abstractions. This Learning Path is filled with clear and simple explanations of its features along with real-world examples, demonstrating how you can build robust, scalable, and reliable programs. You’ll get started with an introduction to Rust data structures, algorithms, and essential language constructs. Next, you will understand how to store data using linked lists, arrays, stacks, and queues. You’ll also learn to implement sorting and searching algorithms, such as Brute Force algorithms, Greedy algorithms, Dynamic Programming, and Backtracking. As you progress, you’ll pick up on using Rust for systems programming, network programming, and the web. You’ll then move on to discover a variety of techniques, right from writing memory-safe code, to building idiomatic Rust libraries, and even advanced macros. By the end of this Learning Path, you’ll be able to implement Rust for enterprise projects, writing better tests and documentation, designing for performance, and creating idiomatic Rust code. This Learning Path includes content from the following Packt products: • Mastering Rust - Second Edition by Rahul Sharma and Vesa Kaihlavirta • Hands-On Data Structures and Algorithms with Rust by Claus Matzinger
Table of Contents (29 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Integration tests


While unit tests can test the private interface of your crate and individual modules, integration tests are kind of like black box tests that aim to test the end-to-end use of the public interface of your crate from a consumer's perspective. In terms of writing code, there is not a lot of difference between writing integration tests and unit tests. The only difference lies in the directory structure and that the items need to be made public, which is already exposed by the developer as per the design of the crate.

 

First integration test

As we stated previously, Rust expects all integration tests to live in the tests/ directory. Files within the tests/ directory are compiled as if they are separate binary crates while using our library under test. For the following example, we'll create a new crate by running  cargo new integration_test --lib, with the same function, sum ,as in the previous unit test, but now we have added a tests/ directory, which has an integration test...