What is the Apex Testing Framework in Salesforce in 2023?

The Apex testing framework enables you to write and execute tests for your Apex classes and triggers on the Lightning Platform. Apex unit tests ensure high quality for your Apex code and let you meet the requirements for deploying Apex. 

Testing is the key to successful long-term development and is a critical component of the development process. The Apex testing framework makes it easy to test your Apex code. Apex code can only be written in a sandbox environment or a Developer org, not in production. Apex code can be deployed to a production org from a sandbox. Also, app developers can distribute Apex code to customers from their Developer orgs by uploading packages to the Lightning Platform AppExchange. 

In addition to being critical for quality assurance, Apex unit tests are also requirements for deploying and distributing Apex. 

 The following are the benefits of Apex unit tests:- 

• Ensuring that your Apex classes and triggers work as expected 
• Having a suite of regression tests that can be rerun every time classes and triggers are updated to ensure that future updates you make to your app don’t break existing functionality 
• Meeting the code coverage requirements for deploying Apex to production or distributing Apex to customers via packages 
• High-quality apps delivered to the production org, which makes production users more productive 
• High-quality apps delivered to package subscribers, which increase your customer's trust 

Don't forget to check out: All You Need to Know About Apex Test Class in Salesforce

Code Coverage Requirement for Deployment

• Before you can deploy your code or package it for the Lightning Platform AppExchange, at least 75% of Apex code must be covered by tests, and all those tests must pass. 
• In addition, each trigger must have some coverage. Even though code coverage is a requirement for deployment, don’t write tests only to meet this requirement. 
• Make sure to test the common use cases in your app, including positive and negative test cases, and bulk and single-record processing. 

Test Method Syntax 

@isTest 

private class MyTestClass { 
 @isTest static void myTest() { 
 // code_block }  
}

Check out another amazing blog by Rupesh here: What is Custom Metadata in Salesforce in 2023?

Let’s run the methods in this class:

1. In the Developer Console, click Test | New Run. 
2. Under Test Classes, click “Name of test class”. 
3. To add all the test methods in the Test class to the test run, click Add Selected. 
4. Click Run. 
5. In the Tests tab, you see the status of your tests as they’re running. Expand the test run, and expand again until you see the list of individual tests that were run. They all have green checkmarks.