Apex Specialist - Test automation logic challenge 4

コードを綺麗に表示できるようにしてくれています。これを回答として使いたい。
https://trailhead.salesforce.com/ja/trailblazer-community/feed/0D54S00000C6iSL
We could not find the class 'MaintenanceRequestHelperTest' using assertions in the unit tests.
@isTest public with sharing class MaintenanceRequestHelperTest {
     // implement scheduled code here
     public static List <case >caseList1 = new List <case>();
     public static List < product2 > prodList = new List < product2 > ();
     public static List < Vehicle__c > vehicleList = new List < Vehicle__c > ();
     public static List < Equipment_Maintenance_Item__c > equipMaintList = new List < Equipment_Maintenance_Item__c > ();
     @testSetup
     static void getData() {
         caseList1 = CreateData(300, 300, 300, 'Repair');
         system.assertEquals(caseList1.size(), 300);
     }
     public static List <case> CreateData(Integer numOfcase, Integer numofProd, Integer numofVehicle, String type) {
             List <case> caseList = new List <case >();
             //Create Vehicle
                 for (integer i = 0; i < numofVehicle; i++) {
                 Vehicle__c vc = new Vehicle__c();
                 vc.name = 'Test Vehicle' + i;
                 vehicleList.add(vc);
             }
             insert vehicleList;
             system.assertEquals(vehicleList.size(), 300);
             //Create Equiment
             for (Integer i = 0; i < numofProd; i++) {
                 Product2 prod = new Product2();
                 prod.Name = 'Test Product' + i;
                 //if(i!=0)
                 prod.Maintenance_Cycle__c = 1;
                 prod.Replacement_Part__c = true;
                 prodList.add(prod);
             }
             upsert prodlist;
             system.assertEquals(prodlist.size(), 300);
             //Create Case
             for (Integer i = 0; i < numOfcase; i++) {
                 Case newCase = new Case();
                 newCase.Status = 'New';
                 newCase.Origin = 'web';
                 if (math.mod(i, 2) == 0)
                     newCase.Type = 'Routine Maintenance';
                 else
                     newCase.Type = 'Repair';
                 newCase.Subject = 'Routine Maintenance of Vehicle' + i;
                 newCase.Vehicle__c = vehicleList[i].Id;
                 if (i < numofProd)
                     newCase.Equipment__c = prodList.get(i).ID;
                 else
                     newCase.Equipment__c = prodList.get(1).ID;
                 caseList.add(newCase);
             }
             upsert caseList;
             system.assertEquals(caseList.size(), 300);
             for (Integer i = 0; i < numofProd; i++) {
                 Equipment_Maintenance_Item__c equipMaintItem1 = new Equipment_Maintenance_Item__c();
                 equipMaintItem1.Equipment__c = prodlist.get(i).Id;
                 equipMaintItem1.Maintenance_Request__c = caseList.get(i).id;
                 equipMaintList.add(equipMaintItem1);
                 Equipment_Maintenance_Item__c equipMaintItem2 = new Equipment_Maintenance_Item__c();
                 equipMaintItem2.Equipment__c = prodlist.get(i).Id;
                 equipMaintItem2.Maintenance_Request__c = caseList.get(i).id;
                 equipMaintList.add(equipMaintItem2);
             }
             upsert equipMaintList;
             system.assertEquals(equipMaintList.size(), 600);
             return caseList;
         }
     public static testmethod void testMaintenanceHelper() {
         Map < Id,case >mapidToCase = new Map < Id,case >();
         Map < Id, case >mapidTonewCase = new Map < Id, case >();
         Test.startTest();
         getData();
         system.debug('caseList1 ==>' + caseList1.size());
         Map < Id, Equipment_Maintenance_Item__c > mapIdToEquipmentItem = new Map < Id, Equipment_Maintenance_Item__c > ([Select Id, Maintenance_Request__c, Equipment__c, Quantity__c, Maintenance_Request__r.Vehicle__c, Equipment__r.Maintenance_Cycle__c From Equipment_Maintenance_Item__c]);
         system.debug('mapIdToEquipmentItem ==>' + mapIdToEquipmentItem.keyset());
         for (Case cas: caseList1) {
             cas.Status = 'Closed';
             mapidToCase.put(cas.Id, cas);
         }
         update caseList1;
         system.assertEquals(300, caseList1.size());
         List < Case > newCaseList = [Select Id, subject, status, Date_Reported__c, Vehicle__c, Date_Due__c
             from
             case
             where subject = 'New Routine Maintenance Request'
             and status = 'New'
         ];
         system.debug('newCaseList ==>' + newCaseList.size());
         system.assertEquals(caseList1.size(), newCaseList.size());
         system.assertEquals(300, newCaseList.size());
         for (
             case cs: newCaseList) {
             mapidTonewCase.put(cs.Id, cs);
             system.assertEquals(cs.Date_Reported__c, date.today());
             //system.assertEquals(cs.Vehicle__c,mapidToCase.get(cs.Maintenance_Request__c).Vehicle__c);
             system.assertEquals(true, cs.Date_Due__c >= date.today());
         }
         List < Equipment_Maintenance_Item__c > modifiedEquipItemList = [Select Id, Maintenance_Request__c,Equipment__c, Quantity__c
             From Equipment_Maintenance_Item__c
             WHERE Maintenance_Request__c in: mapidTonewCase.keyset()
         ];
         system.assertEquals(false, modifiedEquipItemList.size() > 600);
         for (Equipment_Maintenance_Item__c equipItem: modifiedEquipItemList) {
            // system.assertEquals(equipItem.Equipment__c, mapIdToEquipmentItem.get(equipItem.Id).Equipment__c);
             //system.assertEquals(equipItem.Quantity__c, mapIdToEquipmentItem.get(equipItem.Id).Quantity__c);
         }
         Test.stopTest();
     }
 }