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Eric Blaxton 11Eric Blaxton 11 

Help with writing Test Coverage

Hi and thanks in Advance.  I was able to write a test code for my class, but need help.  This provides 5% coverage.

global with sharing class TMWSendOrderService 
    public class OrderResponse 
        string OrderNumber;
        List<string> Comments = new List<string>();
        List<string> Errors = new List<string>();
        string CaseNumber;
  public class FuelOrdered 
    string Type;
    integer Amount;
    public class TmwOrder 
        string CaseNumber;
        Date DeliveryDate;
        string DeliveryTimeframe;
        string CompanyCode;
        string Origin;
    List<FuelOrdered> FuelList = new List<FuelOrdered>();
    List<string> ErrorsFound = new List<string>();
    webservice static String SendToTmw(string cid) 
    system.debug('cid: ' + cid);
        return SendOrderToTmw(cid);
    private static string SendOrderToTmw(string cid)

            return 'INVALID_PARAMETERS';
        // get list of cases that have not yet been sent to TMW and have a valid quantity
    List<Case> sfCases = [ SELECT Id, AccountId, CaseNumber, Origin, 
        RQ_Delivery_Date__c, RQ_Delivery_Timeframe__c, 
        Fuel1_Requested_Type__c, Fuel1_Requested_Amount__c, 
        Fuel2_Requested_Type__c, Fuel2_Requested_Amount__c, 
        Fuel3_Requested_Type__c, Fuel3_Requested_Amount__c, 
        Fuel4_Requested_Type__c, Fuel4_Requested_Amount__c
      FROM Case WHERE id = :cid 
      AND TMW_Order_Num__c = '' //AND SendtoTMW__c = false 
      AND ( 
        Fuel1_Requested_Amount__c > 0 OR Fuel2_Requested_Amount__c > 0 
                OR Fuel3_Requested_Amount__c > 0 OR Fuel4_Requested_Amount__c > 0 
            ) ]; 
        // Instantiate a new http object.  Create a list of cases and send to REST service
        if(sfCases.size() == 0)
            return 'This case requires: valid quantity, requested delivery time and timeframe, and cannot be a resubmission.';
        Http h = new Http();
        HttpRequest req = new HttpRequest();
        Case sfCase = sfCases[0];
    // get company  code from translation table
    string companyCode = 
          SELECT Surrogate_ID__c FROM Translation_Table__c 
          WHERE IntegratedSite__c = :sfCase.AccountId LIMIT 1
        // populate case
        TmwOrder tmwOrder = new TmwOrder();
        tmwOrder.CaseNumber = sfCase.casenumber;
        tmwOrder.DeliveryDate = sfCase.RQ_Delivery_Date__c;
        tmwOrder.DeliveryTimeframe = sfCase.RQ_Delivery_Timeframe__c;
        tmwOrder.CompanyCode = companyCode;
        tmwOrder.Origin = sfCase.Origin;
        FuelOrdered item = new FuelOrdered();
        // create FuelOrdered list from requested types/amounts
        item.Type = sfCase.Fuel1_Requested_Type__c;
        item.Amount = Integer.valueOf(sfCase.Fuel1_Requested_Amount__c);
        if (item.Amount > 0) tmwOrder.FuelList.Add(item);
        item = new FuelOrdered();
        item.Type = sfCase.Fuel2_Requested_Type__c;
        item.Amount = Integer.valueOf(sfCase.Fuel2_Requested_Amount__c);
        if (item.Amount > 0) tmwOrder.FuelList.Add(item);
        item = new FuelOrdered();
        item.Type = sfCase.Fuel3_Requested_Type__c;
        item.Amount = Integer.valueOf(sfCase.Fuel3_Requested_Amount__c);
        if (item.Amount > 0) tmwOrder.FuelList.Add(item);
        item = new FuelOrdered();
        item.Type = sfCase.Fuel4_Requested_Type__c;
        item.Amount = Integer.valueOf(sfCase.Fuel4_Requested_Amount__c);
        if (item.Amount > 0) tmwOrder.FuelList.Add(item);
        string postString = JSON.serialize(tmwOrder);
        // Send the request, and return a response
        HttpResponse res = h.send(req);
        string bod = res.getBody();
        OrderResponse rsp = (OrderResponse)JSON.deserialize(bod, OrderResponse.class);
        system.debug('order response: ' + rsp);
        Case newCase;
        if (rsp.OrderNumber != null && rsp.OrderNumber !='')
            // If Order was created, add order # to the case
            newCase = 
        Select Id, TMW_Order_Num__c, SFtoTMWSent__c, SendtoTMW__c  
                FROM Case 
                WHERE CaseNumber = :rsp.CaseNumber
            newCase.TMW_Order_Num__c = rsp.OrderNumber;
            newCase.SendtoTMW__c = true;
            newCase.SFtoTMWSent__c = date.today();
            update newCase;
            // No order # was returned.  Mark case as sent to TMW.
            newCase = 
                 SELECT Id, SFtoTMWSent__c, SendtoTMW__c  
                 FROM Case 
                 WHERE CaseNumber = :rsp.CaseNumber
            newCase.SendtoTMW__c = true;
            newCase.SFtoTMWSent__c = date.today();
            update newCase;
        // add case comments (if any)
        for (Integer i = 0; i < rsp.Comments.size(); i++)
            CaseComment com = new CaseComment();
            com.ParentId = newCase.id;
            com.CommentBody = rsp.Comments[i];
            insert com;
        return 'Order submitted successfully!';
Test Class:
private class TMWSendOrderService_Test{
  static void setupTestData(){
    Translation_Table__c translation_table_Obj = new Translation_Table__c(Integration_Status__c = false);
    Insert translation_table_Obj; 
   static testMethod void test_TmwOrder(){
    List<Translation_Table__c> translation_table_Obj  =  [SELECT Integration_Status__c, Name from Translation_Table__c];
    TMWSendOrderService obj01 = new TMWSendOrderService();
    TMWSendOrderService.OrderResponse obj11 = new TMWSendOrderService.OrderResponse();
    TMWSendOrderService.FuelOrdered obj21 = new TMWSendOrderService.FuelOrdered();
    TMWSendOrderService.TmwOrder obj31 = new TMWSendOrderService.TmwOrder();

Best Answer chosen by Eric Blaxton 11
Amit Chaudhary 8Amit Chaudhary 8
I will recommend you to start using trailhead to learn about test classes
1) https://trailhead.salesforce.com/modules/apex_testing

Pleasse check below post sample test class
1) http://amitsalesforce.blogspot.com/2015/06/best-practice-for-test-classes-sample.html

Also please check below post
1) https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_qs_test.htm
2) https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_testing_example.htm

You write a test class for this the same way that you would any other:
- Set up some data for the controller to access ()
- Instantiate the controller -
- Execute a method/methods
- Verify the behaviour with asserts.

Update your code like below
private class TMWSendOrderService_Test{
	static void setupTestData(){
			Translation_Table__c translation_table_Obj = new Translation_Table__c(Integration_Status__c = false);
			Insert translation_table_Obj; 
	static testMethod void test_TmwOrder(){
		List<Translation_Table__c> translation_table_Obj  =  [SELECT Integration_Status__c, Name from Translation_Table__c];
		TMWSendOrderService obj01 = new TMWSendOrderService();
		TMWSendOrderService.OrderResponse obj11 = new TMWSendOrderService.OrderResponse();
		TMWSendOrderService.FuelOrdered obj21 = new TMWSendOrderService.FuelOrdered();
		TMWSendOrderService.TmwOrder obj31 = new TMWSendOrderService.TmwOrder();
		Case caseObj = new Case();
		caseObj.SendtoTMW__c = false;
		caseObj.Fuel1_Requested_Amount__c  = 1;
		// Add all required field here
		insert 	caseObj;
		TMWSendOrderService obj = new TMWSendOrderService();

Please follow below salesforce Best Practice for Test Classes :-

1. Test class must start with @isTest annotation if class class version is more than 25
2. Test environment support @testVisible , @testSetUp as well
3. Unit test is to test particular piece of code working properly or not .
4. Unit test method takes no argument ,commit no data to database ,send no email ,flagged with testMethod keyword .
5. To deploy to production at-least 75% code coverage is required 
6. System.debug statement are not counted as a part of apex code limit.
7. Test method and test classes are not counted as a part of code limit
9. We should not focus on the  percentage of code coverage ,we should make sure that every use case should covered including positive, negative,bulk and single record .
Single Action -To verify that the the single record produces the correct an expected result .
Bulk action -Any apex record trigger ,class or extension must be invoked for 1-200 records .
Positive behavior : Test every expected behavior occurs through every expected permutation , i,e user filled out every correctly data and not go past the limit .
Negative Testcase :-Not to add future date , Not to specify negative amount.
Restricted User :-Test whether a user with restricted access used in your code .
10. Test class should be annotated with @isTest .
11 . @isTest annotation with test method  is equivalent to testMethod keyword .
12. Test method should static and no void return type .
13. Test class and method default access is private ,no matter to add access specifier .
14. classes with @isTest annotation can't be a interface or enum .
15. Test method code can't be invoked by non test request .
16. Stating with salesforce API 28.0 test method can not reside inside non test classes .
17. @Testvisible annotation to make visible private methods inside test classes.
18. Test method can not be used to test web-service call out . Please use call out mock .
19. You can't  send email from test method.
20.User, profile, organization, AsyncApexjob, Corntrigger, RecordType, ApexClass, ApexComponent ,ApexPage we can access without (seeAllData=true) .
21. SeeAllData=true will not work for API 23 version eailer .
22. Accessing static resource test records in test class e,g List<Account> accList=Test.loadData(Account,SobjectType,'ResourceName').
23. Create TestFactory class with @isTest annotation to exclude from organization code size limit .
24. @testSetup to create test records once in a method  and use in every test method in the test class .
25. We can run unit test by using Salesforce Standard UI,Force.com IDE ,Console ,API.
26. Maximum number of test classes run per 24 hour of period is  not grater of 500 or 10 multiplication of test classes of your organization.
27. As apex runs in system mode so the permission and record sharing are not taken into account . So we need to use system.runAs to enforce record sharing .
28. System.runAs will not enforce user permission or field level permission .
29. Every test to runAs count against the total number of DML issued in the process .

Please let us know if this post will help you