Learn how to effectively implement and work with test doubles in software development through this 30-minute conference talk from Devoxx Poland 2023. Explore the fundamental concepts of test doubles, including mocks, stubs, fakes, and spies, and discover when and how to use each type appropriately in your testing strategy. Understand the benefits and potential pitfalls of test doubles, examine best practices for creating maintainable and reliable tests, and gain practical insights into integrating test doubles into your development workflow. Master techniques for avoiding common testing antipatterns while leveraging test doubles to create faster, more isolated, and more predictable unit tests that enhance your overall software quality and development process.