Getting null pointer in Before methods

[saran1992]

This is my test class. Am I missing anything?

public class LoginTests{

LoginPage login;

@BeforeClass
public void dataSetup() throws IOException, InterruptedException {
	login = new LoginPage(AppiumDriverManager.getDriver());
	login.login("Login URL");
}

@Test(groups = "Parallel")
public void loginWithValidUser() throws InterruptedException, IOException {
	login = new LoginPage(AppiumDriverManager.getDriver());
	Assert.assertTrue(login.isUserLoggedIn());
}

@Test(groups = "Parallel")
public void logOut() throws InterruptedException, IOException {
	login = new LoginPage(AppiumDriverManager.getDriver());
	Assert.assertTrue(login.isUserLoggedIn());
}

}

Error log:
java.lang.NullPointerException
at com.appium.manager.TestLogger.endLogging(TestLogger.java:68)
at com.appium.manager.AppiumParallelTestListener.afterInvocation(AppiumParallelTestListener.java:84)
at org.testng.internal.invokers.InvokedMethodListenerInvoker$InvokeAfterInvocationWithoutContextStrategy.callMethod(InvokedMethodListenerInvoker.java:100)
at org.testng.internal.invokers.InvokedMethodListenerInvoker.invokeListener(InvokedMethodListenerInvoker.java:62)
at org.testng.internal.Invoker.runInvokedMethodListeners(Invoker.java:566)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:545)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:224)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:146)
at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:166)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:105)
at org.testng.TestRunner.privateRun(TestRunner.java:744)
at org.testng.TestRunner.run(TestRunner.java:602)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)
at org.testng.SuiteRunner.access$000(SuiteRunner.java:39)
at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:414)
at org.testng.internal.thread.ThreadUtil$1.call(ThreadUtil.java:52)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

[saikrishna321]

You can't use @BeforeClass in your test as ATD implements ITestListners you need to create your Listener and add it from config.properties

[saran1992]

Thanks for the quick response @saikrishna321
If possible, can you please post any example in this thread where driver is invoked in before method using ATD?

[saikrishna321]

@saran1992 I found something needs to be changed to get this working.

Marking this as a bug

[saikrishna321]

@saran1992 Fix in master

Currently, we only support using @BeforeMethod and @AfterMethod for setting test status and any setup that needs to be setUp globally will get into Listeners which be part of #540

https://github.com/AppiumTestDistribution/PageObjectPatternAppium/blob/13c01f46ab584f0a5266932623e4e6098e5cddd0/src/test/java/com/appium/tests/LoginTest.java#L20-L24

[saran1992]

Hi @saikrishna321 ,

The fix works fine when we run a single class from Runner.java
However, when there are multiple classes added, we get the following exception:

org.openqa.selenium.NoSuchSessionException: Session ID is null. Using WebDriver after calling quit()?

Driver info: driver.version: AndroidDriver
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:125)
at io.appium.java_client.remote.AppiumCommandExecutor.execute(AppiumCommandExecutor.java:239)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
at io.appium.java_client.DefaultGenericMobileDriver.execute(DefaultGenericMobileDriver.java:46)
at io.appium.java_client.AppiumDriver.execute(AppiumDriver.java:1)
at io.appium.java_client.android.AndroidDriver.execute(AndroidDriver.java:1)
at io.appium.java_client.HasSessionDetails.getSessionDetails(HasSessionDetails.java:39)
at io.appium.java_client.HasSessionDetails.getSessionDetail(HasSessionDetails.java:56)
at io.appium.java_client.HasSessionDetails.getPlatformName(HasSessionDetails.java:65)
at io.appium.java_client.pagefactory.AppiumFieldDecorator.(AppiumFieldDecorator.java:96)
at io.appium.java_client.pagefactory.AppiumFieldDecorator.(AppiumFieldDecorator.java:144)
at com.appium.pages.LoginPage.(LoginPage.java:20)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:108)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:523)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:224)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:146)
at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:166)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:105)
at org.testng.TestRunner.privateRun(TestRunner.java:744)
at org.testng.TestRunner.run(TestRunner.java:602)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:380)
at org.testng.SuiteRunner.access$000(SuiteRunner.java:39)
at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:414)
at org.testng.internal.thread.ThreadUtil$1.call(ThreadUtil.java:52)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

[saikrishna321]

at com.appium.pages.LoginPage.(LoginPage.java:20)

What's happening in this ??

[saran1992]

public LoginPage(AppiumDriver driver) {
PageFactory.initElements(new AppiumFieldDecorator(driver), loginPageObjects);
}

[saikrishna321]

@saran1992 I'm unable to reproduce.

[saikrishna321]

Fixed in v11.0.2