Describe How to Write Unit Tests for Triggers, Controllers, and Classes. PLATFORM-DEVELOPER-I Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   When testing a controller's action method that returns a PageReference, what should the test assert?

   • AThat the PageReference contains the controller's name
   • BThat the returned PageReference is not null and points to the expected page
   • CThat the PageReference is null
   • DThat the PageReference is a Visualforce page
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2. 12foundation · easy

   Which DML operation would a unit test perform to exercise a trigger that fires on the 'before update' event?

   • AInsert a new record
   • BUpsert a new record
   • CDelete an existing record
   • DUpdate an existing record
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4. 13application · medium

   A developer is writing a unit test for a custom controller that has a `save()` action method which inserts an Account and returns a PageReference. Which test correctly verifies the controller's behavior?

   • AUse `Test.setCurrentPage()` to set the page, then call `save()` and assert the page reference.
   • BCall `save()` and use `System.assert` to check that the Account list is empty.
   • CInstantiate the controller and call `save()` without setting the Account property.
   • DInstantiate the controller, set the Account property, call `save()`, and assert that the returned PageReference is not null and the Account was inserted.
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5. 14foundation · easy

   In a unit test, what is the purpose of wrapping DML operations between Test.startTest() and Test.stopTest()?

   • ATo get a fresh set of governor limits for the code being tested
   • BTo ensure the test runs as a specific user
   • CTo reset the database to its original state after the test
   • DTo mark the test as asynchronous for better performance
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6. 15foundation · easy

   What is the purpose of the @testSetup annotation in an Apex test class?

   • ATo define a method that runs once before all test methods in the class, creating common test data
   • BTo mark a test method that should be skipped during execution
   • CTo indicate that a test method should run in a separate transaction
   • DTo specify the amount of code coverage a test must achieve
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