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QasimQasim 

Apex Test

Hi

Need help with writing a test on the following apex class. Basically what it does is that it checks all contacts for meeting criteria on two fields (Days_DBS_Submitted__c and GW_Volunteers__Volunteer_Status__c) and if condition is met it creates a task for the owner of the contact. - Thank you.

global class ContactProcessingBatch implements Database.Batchable<sObject>, Schedulable, Database.Stateful {

    //Variable Section
    global FINAL String strQuery;
    global List<String> errorMessages = new List<String>();
    
    global ContactProcessingBatch() { 
        this.strQuery = getBatchQuery();
    }
    
    //Returns the Query String to Batch constructor to fetch right records.
    private String getBatchQuery() {
        String strQuery = 'SELECT Id, Name, OwnerId FROM Contact WHERE Days_DBS_submitted__c > 30 AND GW_Volunteers__Volunteer_Status__c = \'New Sign Up\''; 
        return strQuery;
    }
    
    //Batch Start method
    global Database.QueryLocator start(Database.BatchableContext BC) {
        return Database.getQueryLocator(strQuery);
    }

    //Batch Execute method
    global void execute(Database.BatchableContext BC, List<sObject> scopeList) {
        System.debug(LoggingLevel.INFO, '== scopeList size ==' + scopeList.size());
        
        List<Contact> conList = (List<Contact>) scopeList;
        List<Task> taskList = new List<Task>();
        if(!conList.isEmpty()) {             
            for(Contact con: conList) {
                Task DBStask = New Task();
                DBSTask.Subject = 'Overdue DBS';
                DBSTask.Priority = 'Normal';
                DBSTask.Status = 'In Pogress';
                DBSTask.ActivityDate = system.today();
                DBStask.WhoId = con.id;
                DBStask.OwnerId=con.ownerId;
                taskList.add(DBSTask);
            }
            
            try {                    
                Database.SaveResult[] saveResults = Database.insert(taskList, false);
                for (Database.SaveResult sr : SaveResults) {
                    if(!sr.isSuccess()) {
                        for (Database.Error err : sr.getErrors()) {
                            errorMessages.add('Error: ' + err.getStatusCode() + ': ' + err.getMessage());
                        }
                        system.debug(sr.getErrors()[0].getMessage());
                    }
                }
                System.debug('errorMessages: '+errorMessages);
            } catch (System.Exception ex) {
                System.debug('An error occurred when inserting the Tasks: ' + ex.getMessage());
                return;
            }
        }
    }  

    //Batch Finish method for after execution of batch work
    global void finish(Database.BatchableContext BC) { 
        AsyncApexJob aaj = [Select Id, Status, NumberOfErrors, JobItemsProcessed, MethodName, TotalJobItems, CreatedBy.Email from AsyncApexJob where Id =:BC.getJobId()];
        
        // Send an email to the Apex job's submitter notifying of job completion.
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
        String[] toAddresses = new String[] {aaj.CreatedBy.Email};
        mail.setToAddresses(toAddresses);
        mail.setSubject('JOB Salesforce Contact Processing Batch: ' + aaj.Status);
        String bodyText='Total Job Items ' + aaj.TotalJobItems + ' Number of records processed ' + aaj.JobItemsProcessed + ' with '+ aaj.NumberOfErrors + ' failures.\n';
        bodyText += 'Number of Error Messages ' + errorMessages.size() + '\n';
        bodyText += 'Error Message' + String.join(errorMessages, '\n');
        mail.setPlainTextBody(bodyText);
        Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
    }
    
    //Method which schedules the ContactProcessingBatch
    global void execute(SchedulableContext sc) {        
        ContactProcessingBatch cpBatch = new ContactProcessingBatch();
        ID batchprocessid = Database.executeBatch(cpBatch);
    }
}
Mahesh DMahesh D
Hi Qasim,

Please see the below Test Class:
  
@isTest
public class ContactProcessingBatchTest {
	static testMethod void testContactProcessingBatch() {
        String CRON_EXP = '0 0 1 * * ?';
		
		Contact con = new Contact();
		con.LastName = 'Test Name';
		con.GW_Volunteers__Volunteer_Status__c = 'New Sign Up';
		con.Days_DBS_submitted__c = 50; // Not sure whether it is a formula field or number field or text field.
		insert con;
		
        Test.startTest();
        
		String jobId = System.schedule('ContactProcessingBatch', CRON_EXP, new ContactProcessingBatch());
         
        CronTrigger ct = [SELECT Id, CronExpression, TimesTriggered, NextFireTime FROM CronTrigger WHERE id = :jobId];

        System.assertEquals(CRON_EXP, ct.CronExpression);
        System.assertEquals(0, ct.TimesTriggered);
		
		Test.stopTest();
    }
}

Please do let me know if it helps you.

Regards
Mahesh
Amit Chaudhary 8Amit Chaudhary 8
Please check below post for test classes. I hope that will help you
1) http://amitsalesforce.blogspot.com/search/label/Test%20Class
2) http://amitsalesforce.blogspot.com/2015/06/best-practice-for-test-classes-sample.html

Please check below post for Batch job
1) http://amitsalesforce.blogspot.com/2016/02/batch-apex-in-salesforce-test-class-for.html

If "Days_DBS_submitted__c" is formula field then please change your batch job like below :-
  
private String getBatchQuery() 
	{
        String strQuery = 'SELECT Id, Name, OwnerId FROM Contact WHERE Days_DBS_submitted__c > 30 AND GW_Volunteers__Volunteer_Status__c = \'New Sign Up\''; 
        if(Test.isRunningTest())
		{
			strQuery = 'SELECT Id, Name, OwnerId FROM Contact WHERE  GW_Volunteers__Volunteer_Status__c = \'New Sign Up\''; 
		}
		return strQuery;
    }



try below Test class. 
@isTest
public class TestContactProcessingBatch 
{
	static testMethod void testContactProcessingBatch() 
	{
        String CRON_EXP = '0 0 1 * * ?';

		List<Contact> lstCont = new List<Contact>();
		for(Integer i=0 ;i<=10;i++)
		{	
			Contact con = new Contact();
			con.LastName = 'Test Name';
			con.GW_Volunteers__Volunteer_Status__c = 'New Sign Up';
			//con.Days_DBS_submitted__c = 50; 
			lstCont.add(con);
		}
		
		insert lstCont;
		
        Test.startTest();
        
		String jobId = System.schedule('ContactProcessingBatch', CRON_EXP, new ContactProcessingBatch());
         
        CronTrigger ct = [SELECT Id, CronExpression, TimesTriggered, NextFireTime FROM CronTrigger WHERE id = :jobId];

        System.assertEquals(CRON_EXP, ct.CronExpression);
        System.assertEquals(0, ct.TimesTriggered);
		
		Test.stopTest();
    }
}
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