Hi,

Use the below code:-

I presume it should cover 80% of your class.

public  class optwizardcls 
{
public string tabname{set;get;}
public string url{get;set;}
public string url1{get;set;}
public string url2{get;set;}
public string url3{get;set;}
public string url4{set;get;}
public string url5{get;set;}
public string ust;
public String a1id{get;set;}
public String aid{get;set;}
public Id cid{get;set;}
public Id pid{get;set;}
public Id oid{get;set;}
public id qid{set;get;}
pagereference pref;
public set<id> conset=new set<id>();
String TabInFocus = System.currentPageReference().getParameters().get('aid');
public optwizardcls()
{
a1id=apexpages.currentPage().getParameters().get('aid');
aid=apexpages.currentPage().getParameters().get('accid');
cid=apexpages.currentPage().getParameters().get('cntid');
pid=apexpages.currentPage().getParameters().get('ploc');
oid=apexpages.currentPage().getParameters().get('oppId');
qid=apexpages.currentPage().getParameters().get('quoteid');
url='apex/accountwizard';if(aid!=null)url1='/apex/WizardContact?accid='+aid;
if(aid!=null)
url2='/apex/physicallocation?accid='+aid;if(aid!=null)url3='/apex/opportunitywizard?accid='+aid;
}
public void getaccrefreshtab()
{
if(aid!=null)
url='apex/accountwizard?accid='+aid;
else if(a1id!=null)
url='apex/accountwizard?aid='+a1id;
}
public void getcontRefreshTab()
{
try
{
url1='/apex/WizardContact?accid='+aid;
}
catch(StringException e)
{
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.info,'Please select Account'); ApexPages.addMessage(myMsg);}}public void getphyrefreshtab(){try{url2='/apex/physicallocation?accid='+aid;
}
catch(StringException e)
{
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.info,'Please select Account');  ApexPages.addMessage(myMsg);}}public void getopprefreshtab(){try{url3='/apex/opportunitywizard?accid='+aid;
}
catch(StringException e)
{
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.info,'Please select Account'); ApexPages.addMessage(myMsg);
}
}
public void getquoteRefreshTab()
{
try
{
url4='/apex/QuoteWizard?accid='+aid;
}
catch(StringException e)
{
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.info,'Please select Account');  ApexPages.addMessage(myMsg);
}
}
static testmethod void optwizardtest()
{
test.starttest();
optwizardcls opt=new optwizardcls();
Account acc=new Account(name='test');
//,Account_Customer_ID__c='123test');
insert acc;
opt.aid=apexpages.currentPage().getParameters().put('accid',+acc.id);
optwizardcls opt1=new optwizardcls();
opt1.getaccrefreshtab();
opt.getcontRefreshTab();
optwizardcls opt2=new optwizardcls();
opt.aid=apexpages.currentPage().getParameters().put('accid','\\\'//asdd');
opt2.getcontRefreshTab();
opt.getphyrefreshtab();
opt.getopprefreshtab();
opt.getquoteRefreshTab();
test.stopTest();
}
}

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