Practice Stubs: Simulating Dependencies With Controlled Responses (2.2.4.4) - Software Engineering - Unit Testing Techniques
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Stubs: Simulating Dependencies with Controlled Responses

Practice - Stubs: Simulating Dependencies with Controlled Responses

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is a stub in the context of unit testing?

💡 Hint: Think about the purpose of isolating tests.

Question 2 Easy

Why is isolation important in unit testing?

💡 Hint: Consider the reliability of model testing.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the primary purpose of a stub in unit testing?

A. To replace complex dependencies with simple implementations
B. To permanently delete the dependency
C. To log all calls made to the dependency
D. To provide live responses from actual databases

💡 Hint: Focus on the role of stubs in simplifying dependencies.

Question 2

True or False: Using stubs can significantly slow down test execution.

True
False

💡 Hint: Think about the definition of stubs.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a unit test case for a service that calculates discounts based on customer type and simulate the necessary dependencies using stubs.

💡 Hint: Focus on how the stub can exert varying responses to different customer types.

Challenge 2 Hard

Discuss how using stubs might impact the testing of a complex feature that integrates multiple external services.

💡 Hint: Think about the trade-offs between isolated tests and real-world scenarios.

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Reference links

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