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notsosmartnotsosmart 

Test Method - System.NullPointerException: Attempt to de-reference a null object

I'm getting this message on my test method for a custom lookup.  It's also commented in the code above line 56.

 

It appears to me that I'm using the same concept a the call to save Contact that works.  The code test out fine interactively.

 

Any clues?  Thanks.

 

THE TEST METHOD IS:

 

/* Purpose : This class contains unit tests for the Custom Lookup.
*/
@isTest(seeAllData=true)
private class test_CustomContactLkpCntl {

public static testMethod void test_CustomContactLkpCntl() {

//Use the PageReference Apex class to instantiate a page

PageReference pageRef = Page.CustomContactLookup;

//In this case, the Visualforce page named Custom...Lookup is the starting point of this test method.

Test.setCurrentPage(pageRef);

//Instantiate and construct the controller class.

customContactLookupController controller = new customContactLookupController();

//Instantiate a new controller with all parameters in the page
controller = new customContactLookupController();

contact c = new Contact();

//calling an Action method. Same as calling any other Apex method.
//Normally this is executed by a user clicking a button or a link from the Visualforce
//page, but in the test method, just test the action method the same as any
//other method by calling it directly.

//get parameters to page URL
ApexPages.currentPage().getParameters();

//The .getURL will return the page url the Search method returns.

controller.searchString = null;
// String srchPage = controller.search().getUrl();
// System.assertEquals('/apex/customcontactlookup', srchPage);

//Example of calling the 'setter' method for several properties.
//but in a test method, just call the setter method directly.

controller.Contact.LastName = 'Test Last Name';
controller.Contact.FirstName = 'Test First Name';

String newPage = controller.saveContact().getUrl();

//Verify that the success page displays
System.assertEquals('/apex/customcontactlookup', newPage);

controller.contact.Description = 'Test Desc';
String editPage = controller.saveContact().getUrl();

//Verify that the success page displays
System.assertEquals('/apex/customcontactlookup', editPage);
// Next line ERROR - System.NullPointerException: Attempt to de-reference a null object
String srchPage = controller.search().getUrl();
System.assertEquals('/apex/customcontactlookup', srchPage);

}
}

 

THE CONTROLLER IS:

 

public with sharing class CustomContactLookupController {

public CustomContactLookupController(ApexPages.StandardController controller) {

}

public Contact contact {get;set;} // new account to create
public List<Contact> results{get;set;} // search results
public string searchString{get;set;} // search keyword
public Boolean IsNew { get; set; }
public String NewTitle { get; set; }

public CustomContactLookupController() {
contact = new Contact();

IsNew = true;
NewTitle = 'Add';

results = new List<Contact>();
// get the current search string
// chgd to below searchString = System.currentPageReference().getParameters().get('lksrch');
searchString = '';
runSearch();
}

// performs the keyword search
public PageReference search() {
runSearch();
return null;
}

// prepare the query and issue the search command
private void runSearch() {
// TODO prepare query string for complex serarches & prevent injections
results = new List<Contact>();
results = performSearch(searchString);
}

// run the search and return the records found.
private List<Contact> performSearch(string searchString) {

String soql = 'select id, Name, Account.Id, Account.Name, Title, Email from contact';
if(searchString != '' && searchString != null)
soql = soql + ' where name LIKE \'%' + searchString +'%\'';
soql = soql + ' limit 25'; // 100';
System.debug(soql);
return database.query(soql);

}

// save the new contact record
public PageReference saveContact() {
if (IsNew == true)
{
insert contact;
IsNew = false;
NewTitle = '* EDIT New Contact *';
}
else
{
upsert contact;
}

searchString = Contact.FirstName = ' ' + Contact.LastName;
runSearch();
return Page.CustomContactLookup;
}

// used by the visualforce page to send the link to the right dom element
public string getFormTag() {
return System.currentPageReference().getParameters().get('frm');
}

// used by the visualforce page to send the link to the right dom element for the text box
public string getTextBox() {
return System.currentPageReference().getParameters().get('txt');
}


}

colemabcolemab

You have this code in your controller:

// performs the keyword search
public PageReference search() {
    runSearch();
    return null;
}

 And then this in your test method:

String srchPage = controller.search().getUrl();

 So I think that the compiler is trying to run this:

String srchPage = null;

 

And that may be why you are getting the null pointer exception.

 

You may want to consider:

return System.currentPageReference();

 

venkateshyadav1243venkateshyadav1243

hi try this code

 

@isTest
public class testcustomcontact
{
static testmethod void Test_CustomContactLookupController()
{
Account testAccount =new Account();
testAccount.name='xxx';
insert testAccount;
Contact testContact =new Contact();
testContact.lastname='xxxx';
testContact.accountid=testAccountid;
insert testContact;

ApexPages.StandardController controller = new ApexPages.StandardController(New Contact());
CustomContactLookupController ccl=new CustomContactLookupController(controller );
ccl.search();
ccl.saveContact();
ccl.getFormTag();
ccl.getTextBox();

}
}