Test Class for Extravagant Record Creation

gistfile1.txt

@isTest
public class TestLimitCasesBulk {
    static testMethod void testLimitCasesBulk() {
    
    //Principle #1: Create records from scratch
    
    //1. Create the custom setting 
    
    Max_Cases__c maxNoCases = new Max_Cases__c();
    maxNoCases.MaxCases__c  = 250;
    maxNoCases.Name         = 'maxcasesetting';
    insert maxNoCases;
    
    //2. Insert 20 users
   
    Profile p            = [SELECT Id FROM Profile WHERE Name='Support']; 
    List<User> allUsers  = new List<User>();
    
    for(Integer i=0; i<20; i++) {
      User newUser = new User();
      newUser .FirstName         = 'Elsa' + i;
      newUser .LastName          = 'of Arendelle + i';
      newUser .Email             = 'elsa@disney.com' + i;
      newUser .Alias             = 'asasa' + i;
      newUser .Username          = 'mankypanky' + i + '@clearstructure.com';
      newUser .LocaleSidKey      = 'en_US';
      newUser .TimeZoneSidKey    = 'GMT';
      newUser .ProfileID         =  p.Id;
      newUser .LanguageLocaleKey = 'en_US';
      newUser .EmailEncodingKey  = 'UTF-8';
      
      allUsers.add(newUser);
      }
      
      insert allUsers;
      
      
      //Insert 250 cases for first x users
            
      List<Case> allCases = new List<Case>();
      
      Integer firstCount = Integer.valueOf(Math.random() * 10) ;
      for(Integer i=0; i<firstCount; i++) {
          for(Integer j=0; j<250; j++) {
              Case newCase          = new Case();
              newCase.Subject       = 'Issue' + j;
              newCase.Description   = 'Description' +j; 
              newCase.Status        = 'Open';
              newCase.OwnerId       = allUsers[i].Id;
              allCases.add(newCase);
              }
            }
            
       insert allCases; 
       
       
       //Insert upto 250 cases for rest of the users
       
       List<Case> allCasesNew =  new List<Case>();
       for(Integer i=firstCount; i<20; i++) {
           Integer count = Integer.valueOf(Math.random() * 250);
           for(Integer j=0; j<count ; j++) {
               Case newCase         = new Case();
              newCase.Subject       = 'Issue' + j;
              newCase.Description   = 'Description' +j; 
              newCase.Status        = 'Open';
              newCase.OwnerId       = allUsers[i].Id;
              allCasesNew.add(newCase);
              }
            }
         insert allCasesNew;     
         
         
       //Setup data has been entered so begin testing
       //This will give us a new set of Governor Limits
       
       Test.startTest();
       
       //Find a count of all users with cases= maxNoCases.MaxCases__c  = 250
       
       Integer userCtr250 = 0;
       List<AggregateResult> groupedResults= [SELECT OwnerId , count(Id) FROM Case
                                              GROUP BY OwnerId];
                                    
       for(AggregateResult countCase: groupedResults) {
               
               if(countCase.get('expr0')==250) {
                   userCtr250++;
                   }
               }
                   
       
       
       
       //Insert 1 case for each of the 20 users
       
       Integer successCount = 0;
       Integer failCount    = 0;
       
              for(Integer i=0; i<20; i++) {
                  
              Case newCase          = new Case();
              newCase.Subject       = 'Issue' + i;
              newCase.Description   = 'Description' +i; 
              newCase.Status        = 'Open';
              
              newCase.OwnerId       = allUsers[i].Id;
              
              try {  
              insert newCase;
              successCount++;
              } catch (Exception e) 
                  { 
                    System.debug('The case couldnt be inserted my friend');
                    failCount++;
                    }  
               
              }
              
              
       //Test things that should work
             
       System.assertEquals( math.abs(userCtr250-20), successCount);
       
       //Test things that shouldn't work
       
       System.assertEquals(userCtr250, failCount);
       
       Test.stopTest();
         
  }       
         
 }