java.lang.NullPointerException Selenium 2 classes - java

My program works fine when run from my local machine with out using selenium grid with Remote Web driver. However when i set up the same test cases using selenium grid with Remote Web driver . Get message in eclipse saying:
java.lang.NullPointerExceptionat PP_OBJ_Login.Adminlogin(PP_OBJ_Login.java:38)
at PP_Main.step01_Login(PP_Main.java:86)
Now I know the above means that line 38 and line 86 is where the problem is in both classes my problem is i don't know why this is happening when I use selenium grid with Remote Web driver.
public class PP_Main {
private static WebDriver driver;
private static String homeUrl;
//private String homeTitle ="Google";
#SuppressWarnings("unused")
private boolean acceptNextAlert = true;
private static StringBuffer verificationErrors = new StringBuffer();
#BeforeClass
public static void setUp() throws Exception {
//----------This works and envokes IE browser -------
System.setProperty("webdriver.ie.driver", "C:\\IEDriverServer.exe");
DesiredCapabilities cap = DesiredCapabilities.internetExplorer();
cap.setCapability(CapabilityType.BROWSER_NAME, DesiredCapabilities.internetExplorer());
cap.setBrowserName("internet explorer");
cap.setPlatform(Platform.ANY);
RemoteWebDriver driver = new RemoteWebDriver(new URL("http://51.19.210.111:5555/wd/hub"), cap);
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
String url = "https://wfn-iat.adp.com/public/index.htm";
driver.get(url);
}
#Test
public void step01_Login() throws Exception {
PP_OBJ_Login.AdminVisiable(driver);
PP_OBJ_Login.Adminlogin(driver).click();-- -> line 86
PP_OBJ_Login.UserName(driver).sendKeys("NorfolkAutoUser6#adp");
PP_OBJ_Login.Submitbtn(driver).click();
PP_OBJ_Login.Password(driver).sendKeys("iatiat01");
Thread.sleep(2000);
PP_OBJ_Login.Submitbtn(driver).click();
Thread.sleep(5000);
}
PP_OBJ_Login.Java
public class PP_OBJ_Login {
private static WebElement element = null;
// WebElement Adminlogin
public static WebElement Adminlogin(WebDriver driver) {-- -- -> Line 38
element = driver.findElement(By.id("adminLogin"));
return element;
}
// WebElement input Field
public static WebElement UserName(WebDriver driver) {
element = driver.findElement(By.id("USER"));
return element;
}
I want this to work using selenium grid and remote web driver. Is there any way to resolve the null pointer issue?

Your Problem is, that you define 'driver' as a class member but you do not instantiate it. So it is null all the time.
public class PP_Main {
private static WebDriver driver;
private static String homeUrl;
//...
And the driver you instantiate inside setUp() is only valid inside the method itself. Although it has exactly the same name it is NOT the 'driver' you defined globally.
#BeforeClass
public static void setUp() throws Exception {
// ...
cap.setPlatform(Platform.ANY);
RemoteWebDriver driver = new RemoteWebDriver(new URL("http://51.19.210.111:5555/wd/hub"), cap);
// ...
}
Instantiate it this way instead
public class PP_Main {
private static RemoteWebDriver driver;
private static String homeUrl;
//...
#BeforeClass
public static void setUp() throws Exception {
// ...
cap.setPlatform(Platform.ANY);
driver = new RemoteWebDriver(new URL("http://51.19.210.111:5555/wd/hub"), cap);
// ...
}
This should work.

Related

Multiple instances of browser opening up when running test through webdriver manager

I am new to Selenium, so basically whenever I ran my test, it would open up the URL which I have mentioned in my test. In my same Test I have also mentioned to fill the username and Password.
But somehow once the browser gets launched and redirect to the URL, it opens up another instance of blank browser failing my script that element not found.
Please help me here.
///////////////////////////////////////////////////////////////////////////
public class TruefillTest extends BaseClass {
public Truefill truefill()
{
WebDriver driver=InitializeDriver();
return new Truefill(driver);
}
#Test
public void userLoginIntoTheSystem()
{
truefill().dashBoard().Url();
truefill().dashBoard().EnterUsername("bjdgfe#swcwr.com");
truefill().dashBoard().EnterPassword("Test1234");
}
///////////////////////////////////////////////
public class Truefill {
private WebDriver driver;
public Truefill(WebDriver driver) {
this.driver=driver;
}
public DashBoardPage dashBoard()
{
return new DashBoardPage(driver);
}
////////////////////////////////////////////////////////////
public class DashBoardPage {
private final WebDriver driver;
By Username= By.xpath("//input[#name='name']");
By Password= By.xpath("//input[contains(#id,'exampleInputPassword1')]");
public DashBoardPage(WebDriver driver) {
this.driver=driver;
}
public void Url()
{
driver.get("https://rahulshettyacademy.com/angularpractice/");
}
public void EnterUsername(String username)
{
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
driver.findElement(Username).sendKeys(username);
}
public void EnterPassword(String password)
{
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
driver.findElement(Password).sendKeys(password);
}
////////////////////////////////////////////////////////////
public class BaseClass {
WebDriver driver;
public WebDriver InitializeDriver()
{
WebDriverManager.chromedriver().setup();
driver = new ChromeDriver();
return driver;
}
}
Each call to the truefill() method initializes a new instance of WebDriver. Since your test is calling it multiple times, it will start a new browser instance on each line. Instead, store the DashboardPage in a local variable:
#Test
public void userLoginIntoTheSystem() {
DashBoardPage dashBoardPage = truefill().dashBoard();
dashBoardPage.Url();
dashBoardPage.EnterUsername("bjdgfe#swcwr.com");
dashBoardPage.EnterPassword("Test1234");
}
You might also want to use a setup method to initialize the Truefill instance, rather than creating it on demand:
private Truefill truefill;
#BeforeEach
public void initializeTruefill() {
WebDriver driver = InitializeDriver();
truefill = new Truefill(driver);
}
#Test
public void userLoginIntoTheSystem() {
DashBoardPage dashBoardPage = truefill.dashBoard();
dashBoardPage.Url();
dashBoardPage.EnterUsername("bjdgfe#swcwr.com");
dashBoardPage.EnterPassword("Test1234");
}
This assumes JUnit 5. If you're using JUnit 4, the annotation is #Before instead of #BeforeEach.

Null pointer exception in selenium cucumber JUnit Framework

Can someone tell the issue in my code for null pointer exception?
Error Message in console
=>test.pages.HomePage#31e75d13<=
[31mFailed scenarios:[0m
[31mE2E_Test.feature:3 [0m# Scenario: Test scenario
1 Scenarios ([31m1 failed[0m)
10 Steps ([31m1 failed[0m, [36m8 skipped[0m, [32m1 passed[0m)
0m12.461s
java.lang.NullPointerException
at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)
at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)
at com.sun.proxy.$Proxy17.sendKeys(Unknown Source)
at test.pages.HomePage.enterSearchText(HomePage.java:31)
at stepDefinitions.Steps.he_search_for(Steps.java:49)
at ✽.When he search for "test"(E2E_Test.feature:5)
Although I am getting the driver object and its not coming as Null as well but still getting a null pointer exception.
I am trying to run the selenium webdriver code to automate some test case. Here i am trying to open google.com and wants to enter some text in search box but after opening the google.com, when the execution reaches searchtextbox.sendkeys("test"), it gives null pointer exception. I tried debugging it to see if the homepage class object is coming as null or not but its showing the value and not null.
This is the test base class that i am using to initiate the google site and maximize the code
public class TestBase {
public static WebDriver driver;
public static Properties prop;
public static EventFiringWebDriver e_driver;
public static WebEventListener eventListener;
public TestBase() {
try {
prop = new Properties();
FileInputStream ip = new FileInputStream(System.getProperty("user.dir") + "/src/main/java/test" +
"/config/config.properties");
prop.load(ip);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
// This method is used to initiatize the site url
public static void initialization(String url) {
String browserName = prop.getProperty("browser");
if (browserName.equals("chrome")) {
System.setProperty("webdriver.chrome.driver", "C:\\Users\\test\\Downloads\\driver\\chromedriver.exe");
driver = new ChromeDriver();
}
e_driver = new EventFiringWebDriver(driver);
// Now create object of EventListerHandler to register it with EventFiringWebDriver
eventListener = new WebEventListener();
e_driver.register(eventListener);
driver = e_driver;
driver.manage().window().maximize();
driver.manage().deleteAllCookies();
driver.manage().timeouts().pageLoadTimeout(TestUtil.PAGE_LOAD_TIMEOUT, TimeUnit.SECONDS);
driver.manage().timeouts().implicitlyWait(TestUtil.IMPLICIT_WAIT, TimeUnit.SECONDS);
if (url == "google") {
driver.get(prop.getProperty("url"));
}
}
}
// Steps Definition file (Steps.java): This is the step defintion file // there is a function he_search_for called where the exception occurs
public class Steps extends TestBase {
WebDriver driver;
TestUtil testUtil;
HomePage homePage;
#Given("^user is on google home page$")
public void user_is_on_google_home_page() throws Throwable {
initialization("google");
testUtil = new TestUtil();
homePage = new HomePage(driver);
}
#When("^he search for \"([^\"]*)\"$")
public void he_search_for(String arg1) throws InterruptedException {
System.out.print("=>" + homePage + "<=");
homePage.enterSearchText();
}
}
// HomePage Class is used to define all the page elements here in this class, i used enterSearchText function to enter the text in a search box.
public class HomePage extends TestBase {
#FindBy(name = "q")
WebElement searchTextBox;
WebDriver driver;
// Initializing the Page Objects:
public HomePage(WebDriver driver) {
this.driver = driver;
PageFactory.initElements(driver, this);
}
public void enterSearchText() {
searchTextBox.sendKeys("Test");
}
}
Problem lies within your code design pattern between Classes Steps & TestBase. Please note
First, Class Steps is extending TestBase which already has WebDriver variable declared & initialized in it. So you do not need to again define WebDriver instance with in Steps. So please remove "WebDriver driver;" from below peace of code.
public class Steps extends TestBase {
WebDriver driver;
TestUtil testUtil;
Second, Please do not declare WebDriver as static variable. Kindly declare it as Non-static as Keeping static may create problem during parallel execution as well.
public class TestBase {
public WebDriver driver;
Making WebDriver instance as non-static and having it as Thread safe
TestBase.java
public class TestBase {
public WebDriver driver;
public static Properties prop;
// This method is used to initiatize the site url
public synchronized void initialization(String url) {
String browserName = prop.getProperty("browser");
if (browserName.equals("chrome")) {
System.setProperty("webdriver.chrome.driver", "C:\\Users\\test\\Downloads\\driver\\chromedriver.exe");
driver = new ChromeDriver();
DriverManager.setWebDriver(driver);
}
}
}
DriverManager.java
import org.openqa.selenium.WebDriver;
public class DriverManager {
public static ThreadLocal<WebDriver> dr = new ThreadLocal<WebDriver>();
public static WebDriver getDriver() {
return dr.get();
}
public static void setWebDriver(WebDriver driver) {
dr.set(driver);
}
}
The problem is here
public class Steps extends TestBase {
WebDriver driver;
TestUtil testUtil;
HomePage homePage;
#Given("^user is on google home page$")
public void user_is_on_google_home_page() throws Throwable {
initialization("google");
testUtil = new TestUtil();
homePage = new HomePage(driver);
}
#When("^he search for \"([^\"]*)\"$")
public void he_search_for(String arg1) throws InterruptedException {
System.out.print("=>" + homePage + "<=");
homePage.enterSearchText();
}
}
The WebDriver driver is null. You initialized WebDriver in initialization("google") method but you don't assign the value of created WebDriver to your driver
Additional line of code might help you.
#Given("^user is on google home page$")
public void user_is_on_google_home_page() throws Throwable {
initialization("google");
this.driver = TestBase.driver; //asign initialized WebDriver to this instance variable
testUtil = new TestUtil();
homePage = new HomePage(driver);
}
You can also remove the local WebDriver driver variable. Since TestBase contains static WebDriver, you can just use it directly since you use inheritance.
However, I highly suggest reading about WebDriverFactory or any similar term, like WebDriverManager. Anything to handle WebDriver instantiation without creating a static WebDriver. It will cause a lot of issues in the future with parallel execution.

Unable to use locators in #Test Junit Selenium web driver

I am new in JUnit Selenium, and I found problem.
I cannot find elements using locator in #Test method. I dont have predictive search when I type driver. I can if I type into #Before.
E.g I cant type
#Test
..
driver.findElement(By.id("gs_htif0")).sendKeys("blabla");
My class contains -
#Before
public void setUp() throws Exception {
WebDriver driver;
System.setProperty("webdriver.gecko.driver", "C:\\geckodriver.exe");
driver = new FirefoxDriver();
String baseURL = "https://www.google.com";
driver.get(baseURL);
}
#Test
public void test() {
driver.**___PROBLEM___**
}
#After
public void tearDown() throws Exception {
}
That's because you've declared
WebDriver driver;
locally within the setUp method which is also annotated using #Before in your case.
You shall move this to the class level and use further as -
public class SomeTest {
WebDriver driver;
#Before
public void setUp() throws Exception {
...
driver = new FirefoxDriver();
...
driver.get(baseURL);
}
#Test
public void test() {
driver.getTitle(); //just an example
}
.... // other methods
}

ChromeDriver Will not run (Selenium Webdriver)

I wrote code like this but this code isn't running the chromedriver and i have added the file(chromedriver.exe) with this path (\chromedrive\chromedriver.exe).
public class Browser {
private static WebDriver driver = new ChromeDriver();
public static WebDriver driver() {
return driver;
}
public static void open(String url) {
String path = System.getProperty("user.dir");
System.setProperty("webdriver.chrome.driver",path + "\\chromedrive\\chromedriver.exe");
driver.manage().window().maximize();
driver.get(url);
}
}
.
public class Page extends LoadableComponent<Page> {
static String url = "http://-------";
private static String title = "title";
public Page() {
PageFactory.initElements(Browser.driver(), this);
}
#Override
protected void load() {
// TODO Auto-generated method stub
Browser.open(url);
}
#Override
protected void isLoaded() throws Error {
// TODO Auto-generated method stub
assertTrue(Browser.driver().getTitle().equals(title));
}
}
.
public class PageTests {
#Test
public void pageTest() {
Page page = new Page();
page.get();
}
}
The error message is:
java.lang.ExceptionInInitializerError
Caused by: java.lang.IllegalStateException: The path to the driver
executable must be set by the webdriver.chrome.driver system property;
Initially i think you are creating the Chromedriver, without the reference to the exe being there.
So if you change it into something like this, it will probaly work.
public class Browser {
private static WebDriver driver;
public static WebDriver driver() {
return driver;
}
public static void open(String url) {
String path = System.getProperty("user.dir");
System.setProperty("webdriver.chrome.driver",path + "\\chromedrive\\chromedriver.exe");
driver = new ChromeDriver(); //Initilize here
driver.manage().window().maximize();
driver.get(url);
}
}
When your application loads the first time, it'll try to load the Browser class.
While loading a class the JVM will do all the static initializing that is specified, in this case it'll try to create a ChromeDriver object, because you're initializing the static field with new ChromeDriver(). At that point your open method hasn't been called yet to set the system property, so an exception will be thrown, which causes the JVM to quit.
To fix this, either create the ChromeDriver object /after/ setting the system property (e.g. in your open method) or set the system property when starting the JVM:
java -Dwebdriver.chrome.driver=path/to/driver -jar somejar.jar
You should instantiate you browser inside the function you are defining and setting the path.
try this:
public static void open(String url) {
String path = System.getProperty("user.dir");
System.setProperty("webdriver.chrome.driver",path + "\\chromedrive\\chromedriver.exe");
driver.manage().window().maximize();
WebDriver driver = new ChromeDriver();
driver.get(url);
}
There is no need of separately creating a driver function.please remove it.

Using Common Selenium WebDriver instance

I want use a common WebDriver instance across all my TestNG tests by extending my test class to use a base class as shown below but it doesn't seem to work :
public class Browser {
private static WebDriver driver = new FirefoxDriver();
public static WebDriver getDriver()
{
return driver;
}
public static void open(String url)
{
driver.get(url);
}
public static void close()
{
driver.close();
}
}
I want to use the WebDriver in my test class as shown below, but I get the error message :
The method getDriver() is undefined for the type GoogleTest:
public class GoogleTest extends Browser
{
#Test
public void GoogleSearch() {
WebElement query = getDriver().findElement(By.name("q"));
// Enter something to search for
query.sendKeys("Selenium");
// Now submit the form
query.submit();
// Google's search is rendered dynamically with JavaScript.
// Wait for the page to load, timeout after 5 seconds
WebDriverWait wait = new WebDriverWait(getDriver(), 30);
// wait.Until((d) => { return d.Title.StartsWith("selenium"); });
//Check that the Title is what we are expecting
assertEquals("selenium - Google Search", getDriver().getTitle().toString());
}
}
The problem is that your getDriver method is static.
Solution #1: Make method non-static (this will either need to make the driver variable non-static as well, or use return Browser.getDriver(); )
public WebDriver getDriver() {
return driver;
}
Or, call the getDriver method by using Browser.getDriver
WebElement query = Browser.getDriver().findElement(By.name("q"));
You need to start your driver, one of many solution is to try #Before to add, Junit will autorun it for you.
public class Browser {
private WebDriver driver;
#Before
public void runDriver()
{
driver = new FirefoxDriver();
}
public WebDriver getDriver()
{
return driver;
}
public void open(String url)
{
driver.get(url);
}
public void close()
{
driver.close();
}
}

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