TestDataFactory/TestUtility is a container that is an org-wide special apex test class & excluded from the organization code size limit. In addition, it’s annotated with @isTest.

Use case:

In test classes, we used to create multiple test data records (Account, Contact, Opportunity, etc) for the testing apex class. In this scenario, we can use the Utility test class to create test data & use the same data in all the test classes.

Pattern:

Test utility classes/TestDataFactory contains methods & called by test methods to perform tasks, such as “Create Test Data”. Here is an example of the Test Data Factory pattern.

@isTest
public class TestDataFactory 
{
    public static User createUser() 
    { 
        Profile pf = [SELECT Id,Name FROM Profile WHERE Name = 'System Administrator' LIMIT 1];
        
        User usr = new User(
            Alias  = 'usralias',
            Email  = 'theuser@email.com',
            Emailencodingkey  = 'UTF-8',
            Lastname  = 'user_lastname',
            Languagelocalekey   = 'en_US',
            Localesidkey   = 'en_US',
            Profileid  =  pf.Id,
            Timezonesidkey  = 'America/Los_Angeles',
            Username =  Math.random() + 'test@testuser.com',
            CompanyName  = 'the company'
        );
        
        insert usr;
        
        return usr;
    }

public static User createCommunityUser(){
        String uniqueUserName = 'CommuntiyUser' + DateTime.now().getTime() + '@testorg.com';
        // This code runs as the system user
        Profile p = [SELECT Id FROM Profile WHERE Name='Intforce Partner Profile'];
        User u = new User(Alias = 'comut', Email='commuser@testorg.com',
                          EmailEncodingKey='UTF-8', LastName='Testing', LanguageLocaleKey='en_US',
                          LocaleSidKey='en_US', ProfileId = p.Id,
                          TimeZoneSidKey='America/Los_Angeles',
                          UserName=uniqueUserName);
        return u;
    }
}

You can create the method based on your requirement. In the above example, we are creating two different users: one is the System admin user, We can call this method like:

@isTest 
public void createUserTest() {
    User SystemAdmin = TestDataFactory.createUser();
}

Second is create a partner community user, for calling this method we need to run as a System Admin, Like:

@isTest
public void createUserTest() {
  System.runAs(SystemAdmin){
      User PartnerUser = TestDataFactory.createCommunityUser();
  }
}

 

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