Bard Unit Test

ProcessContacts_Test.cls

@isTest
private class ProcessContacts_Test {
	@testSetup static void setup() {
		// Create contact record
		List<Contact> testContacts = new List<Contact>();
		for(Integer i=0;i<1;i++) {
			testContacts.add(new Contact(FirstName = 'GoogleBard'+i,
			LastName = 'Test'));
		}
		insert testContacts;
	}

	@isTest static void email_updated_date() {
		// Get the first Contact from testSetup data
		Contact varContact = [SELECT Email
				      FROM Contact
				      WHERE FirstName='GoogleBard0'
				      LIMIT 1];
		// Verify that test contact Email is null.
		System.assertEquals(null, varContact.Email);

		Test.startTest();
		// Update the contacts email field to a new value
		varContact.Email = 'update.bard@ai.com';
		update varContact;
		Test.stopTest();

		// Assert the Bard generated trigger worked as expected
		System.assertEquals(System.now(), 
			[SELECT Email_Updated_Date__c
			 FROM Contact
			 WHERE FirstName = 'GoogleBard0']
			  .Email_Updated_Date__c);
	}
}