Mockito Tutorial: Learn mocking with 25 Junit Examples - Step 06: BDD Style - Given When Then

The video tutorial covers exercises on using matchers with hardcoded values in Mockito, highlighting the limitations and encouraging experimentation. It introduces Behavior Driven Development (BDD), explaining its application in agile projects through user stories and scenarios. The tutorial demonstrates how to apply BDD in unit testing using the given-when-then format, emphasizing the readability and organization of tests. It further explores BDD Mockito, showcasing syntax changes for more readable tests, and concludes with a practical example of converting tests to BDD format.

What happens when you combine a matcher with a hardcoded value in Mockito?

• Mockito allows it without any issues.

• Mockito does not allow this combination.

• Mockito throws an exception.

• Mockito ignores the matcher.

In BDD, what is the purpose of creating scenarios around a user story?

• To make the story more complex.

• To write code directly from the story.

• To break down the story into testable parts.

• To eliminate the need for testing.

How does BDD help in agile projects?

• By reducing the number of tests needed.

• By eliminating the need for user stories.

• By structuring tests around user stories.

• By creating complex scenarios.

What is the 'given' part in a BDD test?

• The setup or initial conditions.

• The expected outcome.

• The cleanup process.

• The action being tested.

What is a common format for writing BDD scenarios?

• If-Else-Then

• Given-When-Then

• Setup-Action-Verify

• Arrange-Act-Assert

How does BDD Mockito enhance test readability?

• By combining all test steps into one.

• By using complex syntax.

• By using given-when-then format.

• By removing all assertions.

What is a key benefit of using the 'assert that' method in BDD tests?

• It eliminates the need for setup.

• It provides more readable assertions.

• It simplifies the test logic.

• It makes tests less readable.

In the practical example, what is the first step in transforming a test to use BDD?

• Identify the setup part as 'given'.

• Ignore the 'when' part.

• Remove all assertions.

• Combine all steps into one.

What does the 'when' part of a BDD test represent?

• The initial setup.

• The action being tested.

• The cleanup process.

• The expected outcome.

Why is the 'then' part important in a BDD test?

• It cleans up after the test.

• It defines the action to be tested.

• It verifies the expected outcomes.

• It sets up the test environment.