Please Help 

Hi I have a apex classes and custom object My Class that creates an Opportunity and Line Items Records when saved on My Visualforce Page. I created a test class to deploy into prod, but can only get 64%coverage. Can someone help me increase my test coverage or guide me in the right dirrection so I can get as close to 100% Also when I run the test I get one Test Failure : System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [Name, StageName, CloseDate]: [Name, StageName, CloseDate]

 Below is my Test Class:

@isTest 
private class TestProInterestToOpportunity {
    static testMethod void myTest() {
        List<Customer_Visited__c> lstOpp = new List<Customer_Visited__c>();
        ApexPages.StandardSetController sc = new ApexPages.StandardSetController(lstOpp);
        ProInterestToOpportunity  myCls = new ProInterestToOpportunity (sc); //Create object reference of 'LeadConvert'
        
        Account objAcc= new Account(Name='Test',Phone='0841545441',Fax='029295789');
        insert objAcc;
        
        Customer_Visit_Report__c objCusRpt = new Customer_Visit_Report__c();
        objCusRpt.Name = 'test';
        insert objCusRpt;
                        
        Customer_Visited__c objCusv = new Customer_Visited__c(Customer_Visit_ReportId__c=objCusRpt.Id, AccountId__c= objAcc.Id);
        insert objCusv;
        ApexPages.CurrentPage().getParameters().put('Id',objCusv.Id);
        
        Product2 objProduct = new product2(name='unittest');
        insert objProduct;
        
        Pricebook2 stdPb = [select Id from Pricebook2 where isStandard=true limit 1];
        insert new PricebookEntry(pricebook2id = stdPb.id, product2id = objProduct.id,unitprice=1.0, isActive=true);
        // Next, it creates a new pricebook with an entry for this product
        
        Pricebook2 PB = new pricebook2(name='unittest');
        insert PB;
        
        PricebookEntry PE = new PricebookEntry(pricebook2id=PB.id, product2id=objProduct.id,unitprice=1.0, isActive=true);
        insert PE;
        
        Product_of_Interest__c objLineItem = new Product_of_Interest__c();
        objLineItem = new Product_of_Interest__c();
        objLineItem.Customer_VisitedID__c = objCusv.Id;
        objLineItem.Customer_Visit_ReportID__c = objCusv.Customer_Visit_ReportID__c;
        objLineItem.ProductId__c = objProduct.Id;
        objLineItem.PriceBookEntryId__c = PE.Id;
        objLineItem.Name = objProduct.Name;
        objLineItem.Status__c = 'Not Started';
        insert objLineItem;
        
            Opportunity objOpp = new Opportunity();
            objOpp.Name = objCusv.AccountName__c + '-';      
            objOpp.AccountID = objCusv.AccountID__c;
            objOpp.CloseDate = System.Today();
            objOpp.StageName = 'Prospecting';
            insert objOpp;
              
        //ProInterestToOpportunity.CusvWrapper lw = myCls.objCusvW;
       
        myCls.objOpp = myCls.getFillOpportunity();  
        PageReference objPageRef = myCls.ConvertCurrentOpp();
        objPageRef = myCls.Cancel();    
        myCls.lstCusv= myCls.getlstCusv();    
    }
}

 Below is my Apex Class:

public class ProInterestToOpportunity {
    public ProInterestToOpportunity(ApexPages.StandardController controller) {
    }
    public ProInterestToOpportunity(ApexPages.StandardSetController controller) {
    controller.setPageSize(10);
    }    
    public boolean IsConverted {get;set;}
    Id oppId;   
    
    public string OpportunityStage {get;set;}

    public List<Customer_Visited__c> lstCusv;
    
    public Opportunity objOpp {get{if (objOpp == null) objOpp = new Opportunity(); return objOpp;} set;}
       
    public List<SelectOption> getStageName()
    {   
        OpportunityStage ls = [select MASTERLABEL from OpportunityStage where IsWon = False];
        OpportunityStage = ls.MASTERLABEL;
        List<SelectOption> options = new List<SelectOption>();
        options.add(new SelectOption(ls.MASTERLABEL,ls.MASTERLABEL));
        return options;
    }
    
   public List<Customer_Visited__c> getlstCusv() {
        if (lstCusv== null){
        return [select AccountName__c,AccountId__c,Customer_Visit_ReportID__c,LastModifiedDate from Customer_Visited__c where id =: ApexPages.currentPage().getParameters().get('id') and AccountId__c != null];
       }
       else
        return lstCusv;
    
    }
     public Opportunity getFillOpportunity()
    {   
        if(lstCusv != null){
            for (Customer_Visited__c lc: lstCusv)
            {
                objOpp.Name = lc.AccountName__c + '-';   
                objOpp.StageName = OpportunityStage;  
                objOpp.CloseDate= System.Today(); 
                objOpp.AccountId = lc.AccountID__c;
            }
        }
        return objOpp;
    }
    public PageReference ConvertCurrentOpp() {
      
    List<Opportunity> lstOpp = [select Id,Name,AccountId,CloseDate,StageName from Opportunity where Name=:objOpp.Name];
     if (lstOpp.size() > 0)
        {
            lstOpp[0].Name =objOpp.Name; 
            lstOpp[0].StageName = objOpp.StageName;
            lstOpp[0].CloseDate = objOpp.CloseDate;     
            lstOpp[0].AccountId = objOpp.AccountId;
            
            update lstOpp[0];
            oppId = lstOpp[0].Id;
            }else{
            insert objOpp;
            oppId = objOpp.Id;
            } 
        if (lstCusv.size() > 0)
        {            
            lstCusv[0].IsConverted__c = true;
            update lstCusv;
        }
        
        //Move all leadlineitems to opportunitylineitems
        
        List<Product_of_Interest__c> lstProIn = [select id,Average_Price__c,Description__c,ProductID__c,Material_Packing_Group__c,Opportunity__c,PriceBookEntryID__c from Product_of_Interest__c where Customer_VisitedID__c = :ApexPages.currentPage().getParameters().get('Id')];
        if (lstProIn.size() > 0 && objOpp.Id != null)
        {
            List<OpportunityLineItem > lstOppTeam = new List<OpportunityLineItem >();
            for(Product_of_Interest__c l:lstProIn)
            {
                if(l.Opportunity__c != null || l.Opportunity__c != 0){
                
                OpportunityLineItem LineItem = new OpportunityLineItem();
                LineItem.OpportunityId = objOpp.Id;
                LineItem.Description = l.Description__c;
                LineItem.Material_Packing_Group__c = l.Material_Packing_Group__c;
                LineItem.PricebookEntryId = l.PriceBookEntryID__c;
                LineItem.Quantity = l.Opportunity__c;
                LineItem.UnitPrice = l.Average_Price__c;
                LineItem.TotalPrice *= l.Opportunity__c;
                lstOppTeam.add(LineItem);    
                }            
            }
            insert lstOppTeam;            
        }
       
        PageReference returnPage = new PageReference('/' + oppId);
        returnPage.setRedirect(true);
        return returnPage;
    }
    
    public PageReference Cancel() {
        PageReference returnPage = new PageReference('/' + ApexPages.currentPage().getParameters().get('id'));
        returnPage.setRedirect(true);
        return returnPage;
    }
 

 Below is my Visual Force Page:

<apex:page id="CustomerToOpportunity" standardController="Customer_Visited__c" extensions="ProInterestToOpportunity">
<apex:form id="CloseOpportunitiesForm">
        <apex:pageBlock id="pageBlock" mode="edit">
        
            <apex:pageBlockButtons >
                <apex:commandbutton action="{!ConvertCurrentOpp}" value="Closed" />
                <apex:commandbutton action="{!Cancel}" value="Cancel" />
            </apex:pageBlockButtons>
            
            <apex:pageBlockSection id="OpportunityNew" collapsible="false" title="New Opportunities" columns="1">
            
                 <apex:pageblockSectionItem id="OppBlockSectionItem">
                    Opportunity Name
                    <apex:outputPanel >
                        <div class="requiredInput">
                        <div class="requiredBlock"></div>                        
                    <apex:inputField id="txtOpportunity" value="{!FillOpportunity.Name}" required="true" />                    
                    </div>
                    </apex:outputPanel>                    
                </apex:pageblockSectionItem>
                <apex:pageblockSectionItem id="StageBlockSectionItem">
                    Stage
                    <apex:selectList value="OpportunityStage">
                    <apex:inputField id="Stage" value="{!StageName}" required="true" />                    
                    </apex:selectList>                                    
                </apex:pageblockSectionItem>
                 
               </apex:pageBlockSection>
        </apex:pageBlock>
 </apex:form>
</apex:page>