I have controller to access variable from flow when I create test class code coverage is to low because the can not access variable from flow in test class.Can help me to improve this test class.

The controller:

public with sharing class MinisiteFlow_Controller {

public String returnURL = ApexPages.currentPage().getParameters().get('rurl');

public Flow.Interview.MinisitePart1_1 MiniSiteFlow{get;set;}

public String lzsite{get;set;}

public String firstname{get;set;}

public String lastname{get;set;}

public String email{get;set;}

public String phone{get;set;}

public String state{get;set;}

public String partner{get;set;}

public String activityid{get;set;}

public String customerid{get;set;}

public Id SNEID{get;set;}

public PageReference getEndPage() {

PageReference send = new PageReference('/apex/MinisiteFlow_LastStep');

if(MiniSiteFlow != null){ 

    SNEID = MiniSiteFlow.SNEID;

  lzsite  = MiniSiteFlow.vEndPage;

firstname = MiniSiteFlow.vFirstName;   

lastname  = MiniSiteFlow.vLastName; 

    email  = MiniSiteFlow.vLeadEmail;   

    phone  = MiniSiteFlow.vPhone;

  state  = MiniSiteFlow.vState;

  partner  = MiniSiteFlow.vPartner;

  activityid  = MiniSiteFlow.vActivityId;

  customerid  = MiniSiteFlow.vCustomerID; 

    send.getParameters().put('rurl',EncodingUtil.urlEncode(returnURL==null?'':returnURL,'UTF-8'));

    send.getParameters().put('firstname',EncodingUtil.urlEncode(firstname==null?'':firstname,'UTF-8'));

    send.getParameters().put('lastname',EncodingUtil.urlEncode(lastname==null?'':lastname,'UTF-8'));

    send.getParameters().put('email',EncodingUtil.urlEncode(email==null?'':email,'UTF-8'));

    send.getParameters().put('phone',EncodingUtil.urlEncode(phone==null?'':phone,'UTF-8'));

    send.getParameters().put('state',EncodingUtil.urlEncode(state==null?'':state,'UTF-8'));

    send.getParameters().put('partner',EncodingUtil.urlEncode(partner==null?'':partner,'UTF-8'));

    send.getParameters().put('activityid',EncodingUtil.urlEncode(activityid==null?'':activityid,'UTF-8'));

    send.getParameters().put('customerid',EncodingUtil.urlEncode(customerid==null?'':customerid,'UTF-8'));

    send.getParameters().put('lzsite',EncodingUtil.urlEncode(lzsite==null?'':lzsite,'UTF-8'));

    send.getParameters().put('SNEID',EncodingUtil.urlEncode(SNEID==null?'':SNEID,'UTF-8'));

} 

        send.setRedirect(true);

        return send;

}

}

The test class :

@isTest

private class MinisiteFlow_Controller_Test {

statictestMethodvoid myUnitTest(){

    PageReference pageRef = Page.MinisiteFlow;

    Test.setCurrentPage(pageRef);

Lead l = new Lead(Company = 'test1@test.com', FirstName = 'first1', LastName = 'last1');

    insert l;

   Id lid = l.Id;

    ApexPages.currentPage().getParameters().put('rurl','/'+l.Id);

        MinisiteFlow_Controller controller = new MinisiteFlow_Controller();

        controller.getEndPage();

} 

}