Hi #Trailblazer, In this video, we are going to talk about how to work with Test Setup Methods in Salesforce Test Class. Below is the Agenda for the same 1 - @TestSetup method 2 - Advantage of @TestSetup method 3 - TestUtility Class 4 - Advantage of Utility Class Link to Code - https://gist.github.com/amitastreait/393f234be893ff84881f00dc3ee89231

1. Using Test Setup
Methods in Test
Classes

2. Agenda
@TestSetup method
Advantage of @TestSetup method
TestUtility Class
Advantage of Utility Class

3. @TestSetup Method
@TestSetup method used to create the test records once and use across
any method over the class.
TestSetup method can reduce test execution time specially while working
with large set of data.
TestSetup method executes once before execution of any test method
executes.
Syntax @testSetup static void methodName() { }

4. @TestSetup Consideration
@TestSetup can not be used if you are accessing data using
@IsTest(seeAllData=true) annotation in Test Class.
You can have only one setup method per test class
If any fatal errors occurs like DML exception in setup method then test class
will be failed and no test method will be executed.

5. @TestSetup

6. @TestSetup

7. Utility Class
Utility class is used to generate the Test Data which can be used across
multiple Test Classes
With the help of Utility Class we can avoid to create the test data in multiple
classes and increase the test execution time.
Increase the Code Reusability
Etc.

8. Utility Class