Salesforce Certified Platform Developer II — Question 192

What are three reasons that a developer should write Jest tests for Lightning web components? (Choose three.)

Answer options

• A. To verify the DOM output of a component
• B. To verify that events fire when expected
• C. To test a component's non-public properties
• D. To test basic user interaction
• E. To test how multiple components work together

Correct answer: A, B, D

Explanation

The correct answers A, B, and D focus on validating the behavior and output of components, which are essential for ensuring that components function as intended. Option C is incorrect because testing non-public properties does not align with Jest's purpose, and option E, while important, pertains to integration testing rather than unit testing of individual components.