Describe the Implications of Testing Visualforce Controllers and Controller Extensions. PLATFORM-DEVELOPER-II Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   In a test for a Visualforce controller, how do you verify that a method correctly updates a property?

   • ACheck the property value in the Salesforce user interface
   • BUse System.debug() to print the property value and manually review the log
   • CCall the method and then use System.assertEquals() to compare the property value to the expected result
   • DRender the page and inspect the HTML output
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2. 7expert · hard

   A controller method returns a PageReference to a page that requires a parameter 'id'. The method sets the parameter using pageRef.getParameters().put('id', recordId). In a test, the developer asserts that the returned PageReference's URL contains 'id='. The test passes. What additional assertion is needed to fully verify the PageReference?

   • AAssert that pageRef.getUrl() starts with '/apex/' to confirm it is a Visualforce page.
   • BAssert that the URL contains the page name, since the parameter is secondary.
   • CAssert that pageRef.getRedirect() is false, since the method does not set redirect.
   • DAssert that pageRef.getParameters().get('id') equals the expected record Id.
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4. 8application · medium

   A developer is writing a test for a controller method that updates an Account's billing city. The method takes an Account Id and a new city as arguments. What is the best practice for setting up the test data?

   • ACreate and insert an Account record, then call the method with the Account's Id and the new city.
   • BUse a mock Account object with a fake Id to avoid DML in the test.
   • CQuery an existing Account from the org, but do not modify it to avoid side effects.
   • DCreate an Account record without inserting it, then call the method with the record's Id.
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5. 9application · medium

   A controller method attempts to insert a list of Contacts and catches any DmlException, adding the error message to the page via ApexPages.addMessage(). A developer writes a test that passes a Contact with a blank LastName to trigger the exception. What assertion should the test make to verify the error handling works?

   • AAssert that the method returned null, since a DML exception always results in a null return.
   • BAssert that ApexPages.getMessages().size() is greater than zero.
   • CAssert that no exception was thrown by wrapping the method call in try-catch and failing if an exception propagates.
   • DAssert that the Contact was inserted successfully by querying for it.
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6. 10application · medium

   A developer is writing tests for a Visualforce controller that has a method to calculate a discount based on the current user's profile. The method uses UserInfo.getProfileId() to determine the discount. What is the best way to test this method for different profiles?

   • AUse System.runAs() with different test users that have the relevant profiles to verify the discount for each.
   • BSet the profile Id directly on the controller instance before calling the method.
   • CMock the UserInfo.getProfileId() method using a test stub to return different values.
   • DWrite a separate test class for each profile, but only run them in production sandboxes.
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