Moq for .NET Unit Testing

Writing reliable unit tests in .NET requires isolating your code from external dependencies like databases, external APIs, and system resources. Moq is the industry-standard mocking library that makes this isolation simple and intuitive. This text-based course guides you from the fundamental concepts of mock objects to practical testing patterns. You will learn how to simulate complex behaviors, set up return values, and verify that your system under test interacts with its dependencies exactly as expected. What you'll learn: - Understand the core concepts of test doubles, mocks, stubs, and test isolation - Configure mock setups to return specific values, throw exceptions, and handle async operations - Verify method calls, parameter arguments, and invocation counts on your mocked interfaces - Apply strict versus loose mocking behaviors to match your testing strategy - Implement modern .NET testing practices using Moq alongside xUnit and dependency injection - Practice writing clean, maintainable mock-based unit tests through step-by-step written exercises The course starts with essential testing terminology and basic mock setups before moving into advanced argument matching, property mocking, and verification techniques. You will explore practical, real-world testing scenarios designed to build your confidence through reading and analyzing structured code examples. This course is designed for .NET developers who are new to mocking or want to solidify their unit testing skills. A basic understanding of C# is recommended, but no prior experience with mocking frameworks is required. Start reading today to write cleaner, faster, and more reliable tests for your .NET applications.