Additional feature to pre-determine children list to clone

force-app/main/default/classes/OpportunityCloneServiceTest.cls

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+/**
+ * @description                     The class will provide code coverage for the OpportunityCloneService
+ * @author                          Cloud Performer <cgary@cloupderformer.com>
+ * @version                         1.0
+ * @group                           Opportunity Cloning
+ * @history                         2021-04-12 - CJG - Created
+ */
+@isTest
+private class OpportunityCloneServiceTest {
+    @TestSetup
+    static void makeData(){
+        List<Account> acctTests = new List<Account>();
+        List<Product2> productList = new List<Product2>();
+        List<PricebookEntry> pricebookItems = new List<PricebookEntry>();
+        List<Opportunity> oppTests = new List<Opportunity>();
+        List<OpportunityLineItem> oliTestLines = new List<OpportunityLineItem>();
+        //create accounts
+        acctTests.add(new Account(
+            Name = TestCloneUtility.GenerateRandomString(10),
+            AccountNumber = TestCloneUtility.GenerateRandomString(8).toUpperCase(),
+            BillingStreet = '1 ' + TestCloneUtility.GenerateRandomString(10) + ' Street',
+            BillingCity = 'Atlanta',
+            BillingState = 'Georgia',
+            BillingPostalCode = '30303',
+            BillingCountry = 'USA' ,
+            ShippingStreet = '2 ' + TestCloneUtility.GenerateRandomString(8) + ' Street',
+            ShippingCity = 'Atlanta',
+            ShippingState = 'Georgia',
+            ShippingPostalCode = '30303',
+            ShippingCountry = 'USA'
+        ));
+        insert acctTests;
+        //create Products
+        for(Integer i=0; i < 5;i++){
+            productList.add(new Product2(
+                Name=TestCloneUtility.GenerateRandomString(5),
+                isActive = true,
+                ProductCode = TestCloneUtility.GenerateRandomString(6).toUpperCase()
+            ));
+        }
+        insert productList;
+        //obtain test Pricbook
+        Id testPricebookId = test.getStandardPricebookId();
+        //create PricebookEntry records
+        for(Product2 prod:productList){
+            pricebookItems.add(new PricebookEntry(
+                IsActive = true,
+                Pricebook2Id = testPricebookId,
+                UnitPrice = 1.0,
+                Product2Id = prod.Id
+            ));
+        }
+        insert pricebookItems;
+        //create test Opportunities
+        Schema.DescribeFieldResult fr = Schema.SObjectType.Opportunity.fields.StageName;
+        List<Schema.PicklistEntry> stageValues = fr.getPicklistValues();
+        for(Account a:acctTests){
+            oppTests.add(new Opportunity(
+                Name = TestCloneUtility.GenerateRandomString(8),
+                CloseDate = System.today().addDays(30),
+                StageName = stageValues[0].getValue()
+            ));
+        }
+        insert oppTests;
+        //create OppLineItems
+        for(Opportunity opp:oppTests){
+            for(PricebookEntry pbe:pricebookItems){
+                oliTestLines.add(new OpportunityLineItem(PricebookEntryId=pbe.Id,Quantity=1.0,UnitPrice=pbe.UnitPrice,
+                    OpportunityId=opp.Id));
+            }
+        }
+        insert oliTestLines;
+    }
+
+    @isTest
+    static void ObtainOpporunityChildRelationships(){
+        Test.startTest();
+
+        Map<String,String> resultMap = OpportunityCloneService.ObtainOpporunityChildRelationships();
+        System.assert(!resultMap.isEmpty());
+
+        Test.stopTest();
+    }
+
+    @isTest
+    static void ObtainCloneOpportunityFields(){
+        Test.startTest();
+
+        Map<String,Boolean> resultMap = OpportunityCloneService.ObtainCloneOpportunityFields('ClonedFields');
+        System.assert(!resultMap.isEmpty());
+
+        Test.stopTest();
+    }
+
+    @isTest
+    static void ObtainQueryStringForOppAndChildren(){
+        //get an opportunity
+        Opportunity testOpp = [SELECT Id FROM Opportunity LIMIT 1];
+        List<String> relStringList = new List<String>{'OpportunityLineItems'};
+        Test.startTest();
+
+        String queryStringTest = OpportunityCloneService.ObtainQueryStringForOppAndChildren(testOpp.Id, relStringList);
+        System.assert(String.isNotBlank(queryStringTest));
+
+        Test.stopTest();
+    }
+    @isTest
+    static void CloneOpportunityWithChildren(){
+        Opportunity testOpp = [SELECT Id, Name FROM Opportunity LIMIT 1];
+        Map<String,String> testReplacements = new Map<String,String>();
+        testReplacements.put('Name',TestCloneUtility.GenerateRandomString(10));
+        Test.startTest();
+
+        Id testResult = OpportunityCloneService.CloneOpportunityWithChildren(testOpp.Id, testReplacements, 
+            new List<String>{'OpportunityLineItems'});
+        System.assertNotEquals(null, testResult);
+
+        Test.stopTest();
+    }
+}