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chinna neelamchinna neelam 

Help me in writing the test class..

HI, 
I am trying to cover the below apex class, but i am not able to get more than 70% of coverage. can you plaese help me how to write a proper test class. Thanks in advance.

apex controller:

public class ContactForAccountEx {
    public string accName {get;set;}
    public List<contact> cons {get;set;}
    public ContactForAccountEx(){
        cons=new List<contact>();
    }
    public void show(){
        List<account> acc=[select id,name,(select id,lastName,firstName,phone from contacts) from account where name=:accName];
        if(acc.size()>0){
            for(account a:acc){
                for(contact c:a.contacts){
                    cons.add(c);
                }
            }
           }
   }
}


My Test class is..

@isTest
private class MyTest {
    private testMethod static void testMe(){
        string str='sakshi';
        test.startTest();
        ContactForAccountEx s=new ContactForAccountEx();
        s.show();
        test.stopTest();
    }
}
Best Answer chosen by chinna neelam
Peter FribergPeter Friberg
You need to create some test data first since there are no data at all when running tests :)
Try something like this:
@isTest
private class ContactForAccountEx_TEST {
    private testMethod static void testOneAccountWithOneContact(){
        Account acc = new Account(Name='Acme');
        insert acc;
        Contact con = new Contact(AccountId=acc.Id, FirstName='John', LastName='Doe', Phone=''555-12343');
        insert con;
        Test.startTest();
        ContactForAccountEx s = new ContactForAccountEx();
        s.accName = 'Acme';
        s.show();
        Test.stopTest();
        System.assertEquals(1, s.cons.size());
        System.assertEquals('John', s.cons[0].FirstName);
    }
}
Good luck!
 

All Answers

Peter FribergPeter Friberg
You need to create some test data first since there are no data at all when running tests :)
Try something like this:
@isTest
private class ContactForAccountEx_TEST {
    private testMethod static void testOneAccountWithOneContact(){
        Account acc = new Account(Name='Acme');
        insert acc;
        Contact con = new Contact(AccountId=acc.Id, FirstName='John', LastName='Doe', Phone=''555-12343');
        insert con;
        Test.startTest();
        ContactForAccountEx s = new ContactForAccountEx();
        s.accName = 'Acme';
        s.show();
        Test.stopTest();
        System.assertEquals(1, s.cons.size());
        System.assertEquals('John', s.cons[0].FirstName);
    }
}
Good luck!
 
This was selected as the best answer
Amit Chaudhary 8Amit Chaudhary 8
Please check below post to learn about test classes with sample code
1) http://amitsalesforce.blogspot.com/2015/06/best-practice-for-test-classes-sample.html

You write a test class for this the same way that you would any other:
- Set up some data for the controller to access (in this case it looks Account and contacts )
- Instantiate the controller - as its custom you don't need to pass any parameters
- Execute a method/methods
- Verify the behaviour with asserts.

Sample test class to start
@isTest
private class MyTest 
{
    private testMethod static void testMe()
	{
		
		Account acc = new Account();
		acc.Name ='Test';
		insert acc;
		
		Contact cont = new Contact();
		cont.LastName ='Test';
		cont.FirstName ='LastName';
		cont.accountid = acc.id;
		insert cont;
		
		
        string str='sakshi';
        test.startTest();
			ContactForAccountEx s=new ContactForAccountEx();
			s.accName ='Test';
			s.show();
			//System.assertEquals(1, s.cons.size());
        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


 
chinna neelamchinna neelam
Thanks @Peter Friberg, @Amit.. its working.