Practice Mocking Behavior (15.7.2) - Unit Testing and Test-Driven Development (JUnit, Mockito)

Practice: Mocking Behavior

Lesson 15.7.2Unit Testing and Test-Driven Development (JUnit, Mockito)

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9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a mock in the context of unit testing?
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Think about why we don't want to use real objects in unit tests.
Question 2.
Which Mockito annotation is used to create a mock object?
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This annotation is used for indicating mock instances.
3Question 3.
What does the @Mock annotation do in Mockito?
- A) It defines a mock object.
- B) It injects a mock into a class.
- C) It verifies method calls.
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Think about the purpose of the @Mock annotation.
4Question 4.
True or False: The when() method in Mockito is used to verify that a method was called.
- True
- False
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Consider which method is actually used for verification.
Question 5.
Create a unit test scenario that demonstrates mocking by using Mockito. Include at least one mock, a stubbing method call, an injecting mock, and a verification.
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Think of the sequence: define a mock, inject it into the controller, and verify the interaction.
Question 6.
Why is it crucial to ensure mocks behave as expected? Describe this in the context of a testing scenario involving a data repository.
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Reflect on how mocking impacts test reliability and accuracy.

5 more questions in this section. Enroll free to practise them all.