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The Art of Unit Testing, Second Edition guides you step by step from writing your first simple tests to developing robust test sets that are maintainable, readable, and trustworthy. You'll master the foundational ideas and quickly move to high-value subjects like mocks, stubs, and isolation, including frameworks such as Moq, FakeItEasy, and Typemock Isolator. You'll explore test patterns and organization, working with legacy code, and even untestable code. Along the way, you'll learn about integration testing and techniques and tools for testing databases and other technologies.

About this Book

You know you should be unit testing, so why aren't you doing it? If you're new to unit testing, if you find unit testing tedious, or if you're just not getting enough payoff for the effort you put into it, keep reading.

The Art of Unit Testing, Second Edition guides you step by step from writing your first simple unit tests to building complete test sets that are maintainable, readable, and trustworthy. You'll move quickly to more complicated subjects like mocks and stubs, while learning to use isolation (mocking) frameworks like Moq, FakeItEasy, and Typemock Isolator. You'll explore test patterns and organization, refactor code applications, and learn how to test untestable code. Along the way, you'll learn about integration testing and techniques for testing with databases.

The examples in the book use C#, but will benefit anyone using a statically typed language such as Java or C++.

Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.

What's Inside

• Create readable, maintainable, trustworthy tests
• Fakes, stubs, mock objects, and isolation (mocking) frameworks
• Simple dependency injection techniques
• Refactoring legacy code

Roy Osherove has been coding for over 15 years, and he consults and trains teams worldwide on the gentle art of unit testing and test-driven development. His blog is at ArtOfUnitTesting.com.

Table of Contents

PART 1 GETTING STARTED
1. The basics of unit testing
2. A first unit test
PART 2 CORE TECHNIQUES
3. Using stubs to break dependencies
4. Interaction testing using mock objects
5. Isolation (mocking) frameworks
6. Digging deeper into isolation frameworks
PART 3 THE TEST CODE
7. Test hierarchies and organization
8. The pillars of good unit tests
PART 4 DESIGN AND PROCESS
9. Integrating unit testing into the organization
10. Working with legacy code
11. Design and testability

Roy Osherove consults and trains teams worldwide on the gentle art of unit testing and test-driven development, and trains team leaders how to lead better at 5whys.com. He tweets at @RoyOsherove and has many videos about unit testing at ArtOfUnitTesting.com. His testing blog is at http: //osherove.com/blog.