Practice - Test Doubles: The Art of Collaboration and Isolation (Deep Dive)
Practice Questions
Test your understanding with targeted questions
What is a stub?
💡 Hint: Think of a simple answer that does not require logic.
Which test double can verify interactions?
💡 Hint: Consider which type checks how methods are called.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is a test double?
💡 Hint: Think about the function of a test double in context.
True or False: A stub can verify interactions.
💡 Hint: Consider what each type of double is designed to do.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You are tasked with testing a payment processing service. How would you implement a test suite using stubs, mocks, and fakes? Describe the structure and purpose of each.
💡 Hint: Consider the roles of each type of test double and what they are best suited for.
Design a unit test for a web service that interacts with an external API. Justify your choice of test doubles.
💡 Hint: What operations and dependencies does your web service rely on?
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Reference links
Supplementary resources to enhance your learning experience.