@testSetup vs DataFactory?
A major reason to use @TestSetup
is the situation where you have many tests that require the same baseline of data. The @TestSetup
method runs once and all its data is available to all the test methods in the class. Any changes made by a test method are rolled back but the @TestSetup
data isn't. The benefit is faster test running because the baseline data inserts are only done once per test class not once per test method.
A downside is that the only way to get references to the data created in @TestSetup
is to query for it. But those queries are much cheaper than the inserts.
(The @TestSetup
method also gets its own set of governor limits, so if you have a lot of data setup logic that consumes a big proportion of those, moving it to @TestSetup
will help.)
I use @TestSetup
sometimes, and other times, when I want to refer to the test data in the following asserts, use builder classes invoked from each test method so I have references to the test objects without having to do queries.
You can choose to use whatever technique you like to create the SObjects and use that method inside the @TestStup
method or outside of it.
Some more information on @TestSetup: What are the advantage of the @testSetUp annotation.
I use both. Why would you have to choose one over the other? @testSetup is a way to reduce test execution time by reusing the data created once in all the test methods of a test class.
TestFactory is to reuse same data in multiple test classes.
Ex:
@isTest
private class AvinashTest {
@testSetup
static void testSetup() {
Test.startTest();
Account a = (Account) TestFactory.createSObject(new Account(), true);
a.Oracle_Cust_Number__c = '10';
update a;
Brand__c b = (Brand__c) TestFactory.createSObject(new Brand__c(), true);
example_Product__c rocProd = TestDataFactory.getexampleProduct( 'Test Prod', b );
insert rocProd;
Contact c = (Contact) TestFactory.createSObject(new Contact(), true);
Opportunity o = (Opportunity) TestFactory.createSObject(new Opportunity(AccountId=a.Id,StageName='Closed Lost', Channel_Type__c = 'Direct'), true);
Product2 prod1 = (Product2) TestFactory.createSObject(new Product2(Brand__c=b.Id), true);
prod1.example_Product__c = rocProd.Id;
update new User(Service_Provider__c = true, Id = UserInfo.getUserId());
Test.stopTest();
}
}