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Explore the intricacies of test doubles in unit testing during this 27-minute conference talk from RubyConf 2021. Delve into the challenges of isolating dependencies across multiple layers and handling implicit dependencies. Learn to identify symptoms that lead to unreliable and unmaintainable tests, and discover strategies to create more resilient and enjoyable test suites. Gain insights on effectively using test doubles to substitute real dependencies while avoiding common pitfalls that can make future maintenance difficult.
