Practice Test Doubles: The Art of Collaboration and Isolation (Deep Dive) - 3.2.3 | Software Engineering - Unit Testing Techniques | Software Engineering Micro Specialization
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3.2.3 - Test Doubles: The Art of Collaboration and Isolation (Deep Dive)

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a stub?

πŸ’‘ Hint: Think of a simple answer that does not require logic.

Question 2

Easy

Which test double can verify interactions?

πŸ’‘ Hint: Consider which type checks how methods are called.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is a test double?

  • A real object
  • An object simulating a dependency
  • A type of database

πŸ’‘ Hint: Think about the function of a test double in context.

Question 2

True or False: A stub can verify interactions.

  • True
  • False

πŸ’‘ Hint: Consider what each type of double is designed to do.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

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.

πŸ’‘ Hint: Consider the roles of each type of test double and what they are best suited for.

Question 2

Design a unit test for a web service that interacts with an external API. Justify your choice of test doubles.

πŸ’‘ Hint: What operations and dependencies does your web service rely on?

Challenge and get performance evaluation