@isTest private class RepairDetailsTriggerTest { @isTest static void test_method_one() { Repair__c repair1 = new Repair__c(); repair1.Name = 'test'; insert repair1; Repair__c repair2 = new Repair__c(); repair2.Name = 'test'; insert repair2; RepairDetails__c repairDetails1 = new RepairDetails__c(); repairDetails1.Repair__c = repair1.id; repairDetails1.Name = 'test'; insert repairDetails1; RepairDetails__c repairDetails2 = new RepairDetails__c(); repairDetails2.Repair__c = repair1.id; repairDetails2.Name = 'test'; insert repairDetails2; List repList = new list(); RepairDetails__c repairDetails3 = new RepairDetails__c(); repairDetails3.Repair__c = repair1.id; repairDetails3.Name = 'test'; RepairDetails__c repairDetails4 = new RepairDetails__c(); repairDetails4.Repair__c = repair2.id; repairDetails4.Name = 'test'; RepairDetails__c repairDetails5 = new RepairDetails__c(); repairDetails5.Repair__c = repair2.id; repairDetails5.Name = 'test'; repList.add(repairDetails3); repList.add(repairDetails4); repList.add(repairDetails5); insert repList; } }