Test coverage in app exchange

Question

I am uploading the salesforce app on app exchange but while uploading it is showing error in test class but in the developer console it is running perfectly and it showing 87% code coverage Error is (Message)

System.DmlException: Upsert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [seit__Date_Created__c, seit__Agent_ID__c, seit__Customer_ID__c, seit__Property_ID__c]: [seit__Date_Created__c, seit__Agent_ID__c, seit__Customer_ID__c, seit__Property_ID__c]

My test method is given below

static testMethod void saveA1()
    {
       seit__Invoice_Table__c pro = new seit__Invoice_Table__c(seit__Date_Created__c=System.today(), seit__Agent_ID__c='a0161000004pUjR', seit__Customer_ID__c='a04610000030Nfp', seit__Property_ID__c='a0261000002iTPk',seit__Payment_Mode__c='Instalments',   seit__Instalments__c='3');
       ApexPages.StandardController sc = new ApexPages.standardController(pro);
       InvoiceController controller = new InvoiceController(sc);
       controller.SaveInvoice();


    }

My controller is

    public with sharing class InvoiceController {
         public List<seit__Invoice_Table__c> getInvoice {get; set;}
        public seit__Invoice_Table__c invoice {get; set;}
        public string searchText {get;set;}
        public List<seit__Invoice_Table__c> searchResults {get;set;}

        public InvoiceController(ApexPages.StandardController controller) {
            invoice=new seit__Invoice_Table__c();
            getInvoice = [SELECT Id,Name,seit__Date_Created__c, seit__Agent_ID__c,seit__Agent_Name__c, seit__Discount__c,seit__Customer_Name__c, seit__Property_ID__c,seit__Property_Name__c,seit__Email__c,seit__Customer_Phone_Number__c,seit__Property_Address__c,seit__Property_Size__c,seit__Property_Size_sq_feet__c,seit__Price__c,seit__Agent_Phone_Number_del__c,seit__Payment_Mode__c,seit__Instalments__c,seit__Payment__c,seit__Customer_ID__c  FROM seit__Invoice_Table__c];
        }

        public pageReference SaveInvoice()
        {
            try{
            upsert invoice;  
            PageReference pageRef = new PageReference('https://itroos-dev-ed--seit.na34.visual.force.com/apex/InvoiceDetailImproveVFPage?core.apexpages.request.devconsole=1');
            pageRef.setRedirect(true);
            return pageRef;  
            }
            catch(Exception ex) 
            {
               ApexPages.addMessages(ex);
             system.debug(ex);
             PageReference pageRef = new PageReference('https://itroos-dev-ed--seit.na34.visual.force.com/apex/InvoiceDetailImproveVFPage?core.apexpages.request.devconsole=1');
            pageRef.setRedirect(true); 
            throw ex;
            }
        }
}

Answer 1

Add invoice= (seit__Invoice_Table__c )controller.getRecord(); in controller this will solve your issue.

So when you pass record in constructor means standardcontroller having your record.. We need to just get record and assign to controller variable..

So this will solve your problem

 public with sharing class InvoiceController {
        public List<seit__Invoice_Table__c> getInvoice {get; set;}
        public seit__Invoice_Table__c invoice {get; set;}
        public string searchText {get;set;}
        public List<seit__Invoice_Table__c> searchResults {get;set;}

        public InvoiceController(ApexPages.StandardController controller) {
            invoice= (seit__Invoice_Table__c )controller.getRecord();
            getInvoice = [SELECT Id,Name,seit__Date_Created__c, seit__Agent_ID__c,seit__Agent_Name__c, seit__Discount__c,seit__Customer_Name__c, seit__Property_ID__c,seit__Property_Name__c,seit__Email__c,seit__Customer_Phone_Number__c,seit__Property_Address__c,seit__Property_Size__c,seit__Property_Size_sq_feet__c,seit__Price__c,seit__Agent_Phone_Number_del__c,seit__Payment_Mode__c,seit__Instalments__c,seit__Payment__c,seit__Customer_ID__c  FROM seit__Invoice_Table__c];
        }

        public pageReference SaveInvoice()
        {
            try{
            upsert invoice;  
            PageReference pageRef = new PageReference('https://itroos-dev-ed--seit.na34.visual.force.com/apex/InvoiceDetailImproveVFPage?core.apexpages.request.devconsole=1');
            pageRef.setRedirect(true);
            return pageRef;  
            }
            catch(Exception ex) 
            {
               ApexPages.addMessages(ex);
             system.debug(ex);
             PageReference pageRef = new PageReference('https://itroos-dev-ed--seit.na34.visual.force.com/apex/InvoiceDetailImproveVFPage?core.apexpages.request.devconsole=1');
            pageRef.setRedirect(true); 
            throw ex;
            }
        }
}