Describe the Implications of Testing Visualforce Controllers and Controller Extensions. PLATFORM-DEVELOPER-II Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   When testing a controller that uses view state, what should you keep in mind?

   • AView state is automatically populated with test data
   • BView state is only relevant for extensions, not standard controllers
   • CView state can be accessed using ApexPages.currentPage().getViewState()
   • DView state is not available in unit tests because there is no page request
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2. 2application · medium

   A developer has a Visualforce page that uses a standard controller for the Account object and a custom controller extension that adds a method called getRecentOrders() which queries the five most recent Order records for the current Account. In an Apex test method, what is the correct way to instantiate the controller extension so the test can invoke getRecentOrders()?

   • ACreate an Account record, insert it, then instantiate ApexPages.StandardController with that Account and pass it to the extension constructor.
   • BUse Test.loadData() to create the Account, then call MyControllerExtension.getRecentOrders() as a static method.
   • CCreate the extension with new MyControllerExtension(new Account()) without inserting the Account, then call getRecentOrders().
   • DInstantiate the extension directly with new MyControllerExtension() and set the Account Id via a public property before calling getRecentOrders().
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4. 3foundation · easy

   How do you instantiate a controller extension in a test?

   • APass a StandardController instance to the extension's constructor
   • BUse System.runAs() with the extension class name
   • CUse ApexPages.currentPage().getExtension()
   • DUse the new keyword with no arguments
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5. 4foundation · easy

   What is the recommended way to test that a controller method throws an exception?

   • AUse a try-catch block in the test and assert that the expected exception is caught
   • BUse Test.stopTest() to catch the exception
   • CLet the exception propagate and the test will fail automatically
   • DUse System.assertThrows() to verify the exception
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6. 5foundation · easy

   What is a best practice for structuring controller tests to ensure maintainability?

   • AUse @testSetup methods to create common test data
   • BUse System.debug() instead of assertions for verification
   • CPlace all test methods in a single large method
   • DAvoid using assertions to keep tests simple
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