Unable to call controller extension method from test class

Question

I have a custom object which is a child to the Opportunity object. The custom object is viewed via visualforce page. Sometimes Users need to create payment records for the child object. This is achieved by calling a method on a controller extension. When pressed, the method will automatically create detail records using information in the custom object record.

I am trying to write a test class that will check the controller is working correctly and that the values copied over from the custom object are correct. I can't figure out how to call the method to create the payments. Can anyone help? Here is the test class:

@isTest                 
public class sipExt_Test {
    public static testMethod void testSIPExtController() {

    // Create Opportunity from test utilities class
    List<Opportunity> OppList = testUtilities.createTestOpps(1); 

    // Create the SIP
    bonus_calculator__c bc1 = new bonus_calculator__c(opportunity__c = OppList[0].Id);
    insert bc1;    

    PageReference ref = new PageReference('/apex/SIP2?id=' + bc1.Id);
    Test.setCurrentPage(ref);

    // Create SIP standard controller, pass it the SIP Record
    ApexPages.StandardController controller = new ApexPages.StandardController(bc1);

    // Pass the Controller to the Extension
    sipExt stdController = new sipExt(controller); 

    stdController.createPayments();           

    // Query for Payments fields
    List <Bonus_Payments__c> bPayList = [SELECT Id FROM Bonus_Payments__c WHERE Bonus_Record__c = :bc1.Id];    

        system.debug(bPayList[0].id);                

    }
}

Answer 1

The call to createPayments is being correctly made.

So there is a bug or bugs in either sipExt or the test code. I suggest you do some debugging yourself - How do I start to debug my own Apex code? - and if you can't figure out what is wrong also post the sipExt code.