Cannot read property 'setAttribute' of null

[Rupesh Patil]

public void HighlightWebElement(WebDriver driver, WebElement element) 

{

for (int i = 0; i <2; i++)

{

           JavascriptExecutor js = (JavascriptExecutor) driver;

           js.executeScript("arguments[0].setAttribute('style', arguments[1]);", element, "border: 2px solid yellow;");  

          

           js.executeScript("arguments[0].setAttribute('style', arguments[1]);", element);

       }

}

if some one have enough time can you please explain what is wrong with highlight line. Why I am getting following error.  

org.openqa.selenium.WebDriverException: unknown error: Cannot read property 'setAttribute' of null

  (Session info: chrome=47.0.2526.106)

  (Driver info: chromedriver=2.20.353145 (343b531d31eeb933ec778dbcf7081628a1396067),platform=Windows NT 6.2 x86) (WARNING: The server did not provide any stacktrace information)

Command duration or timeout: 6 milliseconds

Build info: version: '2.47.1', revision: '411b314', time: '2015-07-30 03:03:16'

System info: host: 'RP', ip: '192.168.56.1', os.name: 'Windows 8', os.arch: 'x86', os.version: '6.2', java.version: '1.7.0_80'

Session ID: 4abce27b86a082ab316676f0a9686797

Driver info: org.openqa.selenium.chrome.ChromeDriver

Capabilities [{platform=WIN8, acceptSslCerts=true, javascriptEnabled=true, browserName=chrome, chrome={userDataDir=C:\Users\Rupesh\AppData\Local\Temp\scoped_dir2292_26716}, rotatable=false, locationContextEnabled=true, mobileEmulationEnabled=false, version=47.0.2526.106, takesHeapSnapshot=true, cssSelectorsEnabled=true, databaseEnabled=false, handlesAlerts=true, browserConnectionEnabled=false, webStorageEnabled=true, nativeEvents=true, hasTouchScreen=false, applicationCacheEnabled=false, takesScreenshot=true}]

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)

at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)

at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:595)

at org.openqa.selenium.remote.RemoteWebDriver.executeScript(RemoteWebDriver.java:504)

at ioh.utility.UtilityClass.HighlightWebElement(UtilityClass.java:24)

at ioh.main.ExecuteTestCases.test_HomePage_Elementes(ExecuteTestCases.java:110)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86)

at org.testng.internal.Invoker.invokeMethod(Invoker.java:643)

at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:820)

at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1128)

at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)

at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)

at org.testng.TestRunner.privateRun(TestRunner.java:782)

at org.testng.TestRunner.run(TestRunner.java:632)

at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)

at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)

at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)

at org.testng.SuiteRunner.run(SuiteRunner.java:268)

at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)

at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)

at org.testng.TestNG.runSuitesSequentially(TestNG.java:1246)

at org.testng.TestNG.runSuitesLocally(TestNG.java:1171)

at org.testng.TestNG.run(TestNG.java:1066)

at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:113)

at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:206)

at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:177)

[PeterJeffreyGale]

Where are you initiating the variable called "element" and how are you passing it to this routine? 

[Rupesh Patil]

Hello Peter,

I hope you are doing great. Thank you for your time, really appreciated 

In the following function I am passing element veritable.

@Test

public void test_HomePage_Elementes()

{

hashmap = new HashMap<String , List<String>>();

list = new ArrayList<String>();

Check_Home_Page_ homepage = PageFactory.initElements(driver, Check_Home_Page_.class);

hashmap = e.mapWithTestCases(con.WORKBOOKFILEPATH, con.WORKBOOKFILENAME,                            con.SHEETNAMEOFWORKBOOK);

WebElement element;

int presentcount=0;

int presentfailCount = 0;

for(int i = 1;i<hashmap.size();i++)

{

list = hashmap.get("STEP_0"+i);

try{

element = homepage.checkElementPresence(list.get(0).toString(), list.get(1).toString().trim(),                                  list.get(2).toString());

uti.HighlightWebElement(driver, element);

if(element.isDisplayed())

{

Reporter.log("<p align=\"left\">-( "+presentcount++ +" )--" + list.get(2).toString()+ " -----                                   PASS</p>");

}

else

{

uti.screenShort(driver, "test_HomePage_Elementes_"+list.get(2).toString());

Reporter.log(  "<p align=\"left\">----( "+presentfailCount++ +" )----- " +                                                           list.get(2).toString()+ " ----- FAIL</p>");

}

}

catch(Exception e)

{

e.printStackTrace();

}

}

}

On Wed, Dec 30, 2015 at 11:18 PM, PeterJeffreyGale <peterjef...@hotmail.co.uk> wrote:

Where are you initiating the variable called "element" and how are you passing it to this routine? 

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Thanks & Regards,

Rupesh Patil,

(9970196189)

[Peter Gale]

In the preceding line, you seem to be setting that variable as a Boolean value rather than using findElement to set it to the element you want to highlight.

I think that is your problem.

[Rupesh Patil]

Hello Peter

Thank you Peter, Problem has been solve by your suggestion.

Thank you....

On Thu, Dec 31, 2015 at 2:39 PM, Peter Gale <PeterJef...@hotmail.co.uk> wrote:

In the preceding line, you seem to be setting that variable as a Boolean value rather than using findElement to set it to the element you want to highlight.

I think that is your problem.

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