test class

@isTest
public class CasePBTestClass{
    
    @isTest 
    static void record_is_pcf_collection(){

    Case firstCase = new Case();
    insert firstCase;
        
    Contact relatedContact = new Contact();
    relatedContact.firstName = 'Bob';
    relatedContact.lastName = 'Bobsen';
    relatedContact.Latest_PCF_Collection__c = firstCase.Id;
    insert relatedContact;


    Case pbCase = new Case();
    pbCase.Subject = 'PCF Collection Case';
    pbCase.Status = 'Pending';
    pbCase.ContactID = relatedContact.Id;
    pbCase.RecordTypeId = Case.SObjectType.getDescribe().getRecordTypeInfosByDeveloperName().get('PCF_Collection').getRecordTypeId();
    insert pbCase;
    
        relatedContact = [SELECT Latest_PCF_Collection__c FROM Contact WHERE Id=:relatedContact.Id];
        

    System.assertEquals(pbCase.Id, relatedContact.Latest_PCF_Collection__c);
   }

   @isTest
   static void retention_case_closed(){

    Contact retentionContact = new Contact();
    retentionContact.firstName = 'Gwen';
    retentionContact.lastName = 'Stacy';
    retentionContact.email = 'gwenstacy@ccnoemail.com';
    retentionContact.RecordTypeId = Contact.SObjectType.getDescribe().getRecordTypeInfosByDeveloperName().get('Customer').getRecordTypeId();
    insert retentionContact; 
   
    Case newRetentionCase = new Case();
    newRetentionCase.ContactId = retentionContact.Id;
    newRetentionCase.Status = 'New';
    newRetentionCase.Subject = 'Retention Case'; 
    newRetentionCase.RecordTypeId = Case.SObjectType.getDescribe().getRecordTypeInfosByDeveloperName().get('Retention_Case').getRecordTypeId();
    insert newRetentionCase;


    newRetentionCase.ContactID = retentionContact.Id;
    newRetentionCase.RecordTypeId = Case.SObjectType.getDescribe().getRecordTypeInfosByDeveloperName().get('Retention_Case').getRecordTypeId();
    newRetentionCase.Status = 'Closed Lost';

    update newRetentionCase;

    retentionContact = [SELECT Last_Retention_Closed_Date__c FROM Contact WHERE Id =:retentionContact.Id];

    System.assertEquals(Date.today(), retentionContact.Last_Retention_Closed_Date__c);




   }
}