Testing Rust Applications: From Unit Tests to Integration Scenarios

The book "Testing Rust Applications" is the first practical guide in Russian that consistently and deeply covers all aspects of testing code in the Rust language. Unlike many resources that focus only on syntax and basic capabilities, this book teaches you to think about code quality from the very beginning of development.

What this book is about

The author guides the reader from simple unit tests to complex integration scenarios and load testing. The book covers:

• Basics of testing in Rust: #[test] attributes, assert! and assert_eq! macros, organizing test modules
• Writing unit tests for functions, structs, methods, and traits
• Testing asynchronous code with tokio::test and async-std
• Creating mocks and stubs using the mockall and mockito libraries
• Property-based testing with the proptest crate — automatic test data generation
• Integration testing of multi-module projects and benchmarks
• Setting up CI/CD for Rust projects: GitHub Actions, GitLab CI, automated test execution
• Testing WebAssembly, FFI, and unsafe code

Who this book is for

• Beginner Rust developers — will learn how to write tests correctly from scratch and avoid common mistakes
• Experienced programmers — will master advanced techniques: property-based testing, creating custom test frameworks, testing concurrent code
• Team leads and architects — will get ready-made templates for organizing test infrastructure in commercial projects
• Teachers and students — will find structured material for courses on software quality

What you will learn

After reading the book, you will be able to:

• Design application architecture that is convenient for testing
• Write reliable unit tests that run quickly and don't break during refactoring
• Use mocks to isolate external dependencies (databases, HTTP services, file system)
• Automate test scenario generation using proptest
• Set up continuous integration and receive code coverage reports
• Test multithreaded and asynchronous code without data races

The book contains many ready-made examples that can be immediately applied in your projects. All code is available in a GitHub repository. This is not just theory — it is a tool that will make your Rust code truly reliable.

Format: electronic book (PDF, EPUB, MOBI)
Language: Russian
Level: from beginner to advanced