Null pointer exception for Extent Report

It wouldbe silly question but would be great help it you can help me out.
I tried implementing extent report for multple test cases, but report are not getting generated .

Code:

public class SampleTc1
{
static WebDriver driver;
static ExtentReports report;
static ExtentTest logger;
static void testcase1()
{
System.setProperty("webdriver.chrome.driver","chromedriver.exe");
driver = new ChromeDriver();
driver.get("https://www.google.co.in");
logger.log(LogStatus.PASS, "This step is passed");
driver.close();
}
}

public class SampleTc2
{
static WebDriver driver;
static ExtentReports report;
static ExtentTest logger;

static void testcase2()
{
System.setProperty("webdriver.chrome.driver","chromedriver.exe");
driver = new ChromeDriver();
driver.get("https://www.google.co.in");
logger.log(LogStatus.PASS, "This step is passed");
driver.close();
}
}

Main Class:
public class Maindriver {
static WebDriver driver;
static ExtentReports report;
static ExtentTest logger;
public static void main(String args) throws Exception {
// TODO Auto-generated method stub
report=new ExtentReports("./Report/ExtentReport/ExecutionResult.html", true);

logger=report.startTest("TC1", "Testc Case1");
SampleTc1.testcase1();
report.endTest(logger);

logger=report.startTest("TC2", "Testc Case2");
SampleTc2.testcase2();
report.endTest(logger);

report.flush();
}

}

After running no reports are getting generated and it is showing null ponter exception:
Exception in thread "main" java.lang.NullPointerException
at SmokeTest.SampleTc1.testcase1(SampleTc1.java:24)
at SmokeTest.Maindriver.main(Maindriver.java:22)


Above exception I am getting.

Thanks in advance.

logger

3 Answers
3

If you are using testng for running selenium suite, you can implement extent reports as a listener.

testng

Like,

public class ExtentReporterNG implements IReporter
{

public ExtentReports extent;
private void buildTestNodes(IResultMap testMap, LogStatus status)

{

ExtentTest test;

if (testMap.size() > 0)
{
for (ITestResult result : testMap.getAllResults())
{
//test = extent.startTest(result.getInstance().getClass().getSimpleName(),result.getMethod().getMethodName());
test = extent.startTest(result.getMethod().getMethodName().toUpperCase(),result.getInstance().getClass().getSimpleName().toUpperCase());
test.assignCategory(result.getInstance().getClass().getSimpleName().toUpperCase());
test.setStartedTime(getTime(result.getStartMillis()));
for (String group : result.getMethod().getGroups())
test.assignCategory(group);
String message = "Test " + status.toString().toLowerCase() + "ed";
if (result.getThrowable() != null)
message = result.getThrowable().getMessage();
test.setEndedTime(getTime(result.getEndMillis()));
test.log(status, message);
extent.endTest(test);
}
}
}

private Date getTime(long millis)
{
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(millis);
return calendar.getTime();
}
@Override
public void generateReport(List<XmlSuite> xmlsuite, List<ISuite> suites,String file)
{
final String filePath=GlobalSettings.getProperty(GlobalSettings.EXTENTFILE);
extent = new ExtentReports(filePath, true,DisplayOrder.NEWEST_FIRST,NetworkMode.OFFLINE );
extent.loadConfig(new File("./config/extentConfig.xml"));
for (ISuite suite : suites)
{
Map<String, ISuiteResult> result = suite.getResults();
for (ISuiteResult r : result.values())
{
ITestContext context = r.getTestContext();
buildTestNodes(context.getPassedTests(), LogStatus.PASS);
buildTestNodes(context.getFailedTests(), LogStatus.FAIL);
buildTestNodes(context.getSkippedTests(), LogStatus.SKIP);
buildTestNodes(context.getFailedConfigurations(),LogStatus.FAIL);
buildTestNodes(context.getSkippedConfigurations(),LogStatus.SKIP);
}
}
extent.flush();
extent.close();
}}


It is not well organized, hard to say what/where is the problem ...

You can check here a selenium webdriver testng tutorial I used it when I started and it is a good starting point!

I created separate class for extent report, hence avoided NULL pointer exception

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