Describe When and How to Use Various Sources of Test Data. PLATFORM-DEVELOPER-I Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   A developer is writing a test for a batch class that processes a large number of Account records. The test needs to load 500 Account records from a static resource. The developer uses Test.loadData(Account.SObjectType, 'TestAccounts'). However, the test fails because the CSV file contains a column for 'Id' that is not valid. What is the likely issue?

   • AThe CSV file should not include an 'Id' column because IDs are auto-generated by Salesforce.
   • BThe static resource name is incorrect.
   • CThe Account object does not support Test.loadData().
   • DThe CSV file must be in XML format instead of CSV.
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2. 7foundation · easy

   What is the purpose of Test.startTest() and Test.stopTest() in an Apex test?

   • ATo load test data from a static resource
   • BTo create a new governor limit context for the code between them
   • CTo mark the beginning and end of the test method
   • DTo enable SeeAllData for the test
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4. 8application · medium

   A development team has multiple test classes that all need to create Account, Contact, and Opportunity records with similar field values. To reduce duplication and improve maintainability, they want to centralize the test data creation logic. What should they do?

   • AUse @isTest(SeeAllData=true) to access existing data instead of creating new records.
   • BCreate a test data factory class with static methods that return sObject records with default field values.
   • CCopy the data creation code into each test class to ensure independence.
   • DUse a static resource with CSV files for all test data.
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5. 9application · medium

   A developer is writing a test for an Apex class that makes a callout to an external REST API to retrieve currency exchange rates. The test must not make a real HTTP callout. What should the developer do to simulate the external data source?

   • AImplement the HttpCalloutMock interface and use Test.setMock(HttpCalloutMock.class, new MyMock()) in the test.
   • BUse Test.loadData() to load exchange rates from a static resource.
   • CUse @isTest(SeeAllData=true) to allow the test to access the external system directly.
   • DCreate a custom setting that stores the exchange rates and use it in the test.
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6. 10foundation · easy

   Which of the following is a best practice for creating test data in Salesforce?

   • ARelying on data from the production org
   • BCreating data within the test method
   • CUsing hard-coded record IDs
   • DUsing the same test data for all tests
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