Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use Interface ITestListener class of org.testng package

Best Testng code snippet using org.testng.Interface ITestListener

Source:TestListener.java

1/*******************************************************************************2 * * Copyright 2018 T Mobile, Inc. or its affiliates. All Rights Reserved.3 *  *4 *  * Licensed under the Apache License, Version 2.0 (the "License"); you may not5 *  * use this file except in compliance with the License.  You may obtain a copy6 *  * of the License at7 *  *8 *  *   http://www.apache.org/licenses/LICENSE-2.09 *  *10 *  * Unless required by applicable law or agreed to in writing, software11 *  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT12 *  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the13 *  * License for the specific language governing permissions and limitations under14 *  * the License.15 ******************************************************************************/16package com.tmobile.ct.codeless.test.testng.listeners;17import org.testng.ITestContext;18import org.testng.ITestListener;19import org.testng.ITestResult;20import com.tmobile.ct.codeless.core.Test;21import com.tmobile.ct.codeless.test.extentreport.ExtentTestManager;22import org.slf4j.Logger;23import org.slf4j.LoggerFactory;24/**25 * The listener interface for receiving test events.26 * The class that is interested in processing a test27 * event implements this interface, and the object created28 * with that class is registered with a component using the29 * component's <code>addTestListener<code> method. When30 * the test event occurs, that object's appropriate31 * method is invoked.32 *33 * @author Rob Graff34 * @author Sai Chandra Korpu35 * @see TestEvent36 */37public class TestListener implements ITestListener {38	public static final Logger log = LoggerFactory.getLogger(TestListener.class);39	/**40	 * Gets the test method name.41	 *42	 * @param iTestResult the i test result43	 * @return the test method name44	 */45	private static String getTestMethodName(ITestResult iTestResult) {46		return iTestResult.getMethod().getConstructorOrMethod().getName();47	}48	/* (non-Javadoc)49	 * @see org.testng.ITestListener#onTestStart(org.testng.ITestResult)50	 */51	@Override52	public void onTestStart(ITestResult result) {53		log.debug("Entering TestListener.onTestStart method " + getTestMethodName(result) + " start");54		Test test = (Test) result.getParameters()[0];55		ExtentTestManager.startTest(test.getName(), "Test Start");56	}57	/* (non-Javadoc)58	 * @see org.testng.ITestListener#onTestSuccess(org.testng.ITestResult)59	 */60	@Override61	public void onTestSuccess(ITestResult result) {62		log.debug("Entering TestListener.onTestSuccess method " + getTestMethodName(result) + " succeed");63		// Extentreports log operation for passed tests.64		// ExtentTestManager.getTest().log(LogStatus.PASS, "Test passed");65	}66	/* (non-Javadoc)67	 * @see org.testng.ITestListener#onTestFailure(org.testng.ITestResult)68	 */69	@Override70	public void onTestFailure(ITestResult iTestResult) {71		// To add it in the extent report72		// logger.log(LogStatus.FAIL, logger.addScreenCapture(screenshotPath));73		/*74		 * log.debug("Entering TestListener.onTestFailure method " +75		 * getTestMethodName(iTestResult) + " failed");76		 * 77		 * // Get driver from BaseTest and assign to local webdriver variable. Object78		 * testClass = iTestResult.getInstance(); WebDriver webDriver = ((WebTest)79		 * testClass).getDriver();80		 * 81		 * // Take base64Screenshot screenshot. String base64Screenshot =82		 * "data:image/png;base64," + ((TakesScreenshot)83		 * webDriver).getScreenshotAs(OutputType.BASE64);84		 * 85		 * // Extentreports log and screenshot operations for failed tests.86		 * ExtentTestManager.getTest().log(LogStatus.FAIL, "Test Failed",87		 * ExtentTestManager.getTest().addBase64ScreenShot(base64Screenshot));88		 */89	}90	/* (non-Javadoc)91	 * @see org.testng.ITestListener#onTestSkipped(org.testng.ITestResult)92	 */93	@Override94	public void onTestSkipped(ITestResult iTestResult) {95		log.debug("Entering TestListener.onTestSkipped method " + getTestMethodName(iTestResult) + " skipped!");96		// Extentreports log operation for skipped tests.97		// ExtentTestManager.getTest().log(LogStatus.SKIP, "Test Skipped");98		log.error("skip exception:: "+iTestResult.getThrowable());99		iTestResult.getThrowable().printStackTrace();100	}101	/* (non-Javadoc)102	 * @see org.testng.ITestListener#onTestFailedButWithinSuccessPercentage(org.testng.ITestResult)103	 */104	@Override105	public void onTestFailedButWithinSuccessPercentage(ITestResult iTestResult) {106		log.debug("Test failed but it is in defined success ratio " + getTestMethodName(iTestResult));107	}108	/* (non-Javadoc)109	 * @see org.testng.ITestListener#onStart(org.testng.ITestContext)110	 */111	@Override112	public void onStart(ITestContext context) {113		log.debug("Entering TestListener.onStart method " + context.getName());114//		context.setAttribute("WebDriver", this.getDriver());115		116	}117	/* (non-Javadoc)118	 * @see org.testng.ITestListener#onFinish(org.testng.ITestContext)119	 */120	@Override121	public void onFinish(ITestContext context) {122		log.debug("Entering TestListener.onFinish method " + context.getName());123		ExtentTestManager.endTest();124		ExtentTestManager.getReporter().flush();125	}126}...

Source:Listener.java

1package com.HFramework.utility;2import org.testng.IInvokedMethod;3import org.testng.IInvokedMethodListener;4import org.testng.ISuite;5import org.testng.ISuiteListener;6import org.testng.ITestContext;7import org.testng.ITestListener;8import org.testng.ITestNGMethod;9import org.testng.ITestResult;10import org.testng.Reporter;11public class Listener implements ITestListener, ISuiteListener, IInvokedMethodListener {12	/*13	 * What is Listeners in Selenium WebDriver? 14	 * Listener is defined as interface that modifes the default TestNG's behavior. As the name suggests Listeners15	 * "listen" to the event defined in the selenium script and behave accordingly.16	 * It is used in selenium by implementing Listeners Interface. It allows17	 * customizing TestNG reports or logs. There are many types of TestNG listeners18	 * available19	 * 20	 * Types of Listeners in TestNG There are many types of listeners which allows21	 * you to change the TestNG's behavior.22	 * 23	 * Below are the few TestNG listeners:24	 * 25	 * IAnnotationTransformer , IAnnotationTransformer2 , IConfigurable ,26	 * IConfigurationListener , IExecutionListener, IHookable ,27	 * IInvokedMethodListener , IInvokedMethodListener2 , IMethodInterceptor ,28	 * IReporter, ISuiteListener, ITestListener . Above Interface are called TestNG29	 * Listeners. These interfaces are used in selenium to generate logs or30	 * customize the Testing reports.31	 */32	// This belongs to ISuiteListener and will execute before the Suite start33	public void onStart(ISuite isuitestart) {34		Reporter.log("About to begin executing Suite " + isuitestart.getName(), true);35	}36	// This belongs to ISuiteListener and will execute, once the Suite is finished37	public void onFinish(ISuite isuiteend) {38		Reporter.log("About to end executing Suite " + isuiteend.getName(), true);39	}40	// This belongs to ITestListener and will execute before starting of Test41	// set/batch42	public void onStart(ITestContext iteststart) {43		Reporter.log("About to begin executing Test " + iteststart.getName(), true);44	}45	// This belongs to ITestListener and will execute, once the Test set/batch is46	// finished47	public void onFinish(ITestContext itestend) {48		Reporter.log("Completed executing test " + itestend.getName(), true);49	}50	// This belongs to ITestListener and will execute only when the test is pass51	public void onTestSuccess(ITestResult itestpass) {52		// This is calling the printTestResults method53		printTestResults(itestpass);54	}55	// This belongs to ITestListener and will execute only on the event of fail test56	public void onTestFailure(ITestResult itestfail) {57		// This is calling the printTestResults method58		printTestResults(itestfail);59	}60	// This belongs to ITestListener and will execute before the main test start61	// (@Test)62	public void onTestStart(ITestResult mainiteststart) {63		System.out.println("The execution of the main test starts now");64	}65	// This belongs to ITestListener and will execute only if any of the main66	// test(@Test) get skipped67	public void onTestSkipped(ITestResult mainitestskiped) {68		printTestResults(mainitestskiped);69	}70	// This is just a piece of shit, ignore this71	public void onTestFailedButWithinSuccessPercentage(ITestResult successpercentage) {72		73		System.out.println(successpercentage);74	}75	// This is the method which will be executed in case of test pass or fail76	// This will provide the information on the test77	private void printTestResults(ITestResult result) {78		Reporter.log("Test Method resides in " + result.getTestClass().getName(), true);79		if (result.getParameters().length != 0) {80			String params = null;81			for (Object parameter : result.getParameters()) {82				params += parameter.toString() + ",";83			}84			Reporter.log("Test Method had the following parameters : " + params, true);85		}86		String status = null;87		switch (result.getStatus()) {88		case ITestResult.SUCCESS:89			status = "Pass";90			break;91		case ITestResult.FAILURE:92			status = "Failed";93			break;94		case ITestResult.SKIP:95			status = "Skipped";96		}97		Reporter.log("Test Status: " + status, true);98	}99	// This belongs to IInvokedMethodListener and will execute before every method100	// including @Before @After @Test101	public void beforeInvocation(IInvokedMethod methodname, ITestResult itestresults) {102		String textMsg = "About to begin executing following method : " + returnMethodName(methodname.getTestMethod());103		Reporter.log(textMsg, true);104	}105	// This belongs to IInvokedMethodListener and will execute after every method106	// including @Before @After @Test107	public void afterInvocation(IInvokedMethod arg1, ITestResult arg2) {108		String textMsg = "Completed executing following method : " + returnMethodName(arg1.getTestMethod());109		Reporter.log(textMsg, true);110	}111	// This will return method names to the calling function112	private String returnMethodName(ITestNGMethod method) {113		return method.getRealClass().getSimpleName() + "." + method.getMethodName();114	}115}...

Source:Constants.java

1package test.listeners.ordering;2public interface Constants {3  String IALTERSUITELISTENER_ALTER = "org.testng.IAlterSuiteListener.alter(List<XmlSuite> suites)";4  String IANNOTATIONTRANSFORMER_TRANSFORM_3_ARGS = "org.testng.IAnnotationTransformer.transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod)";5  String IANNOTATIONTRANSFORMER_TRANSFORM_4_ARGS = "org.testng.IAnnotationTransformer.transform(IConfigurationAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod)";6  String IANNOTATIONTRANSFORMER_DATAPROVIDER = "org.testng.IAnnotationTransformer.transform(IDataProviderAnnotation annotation, Method method)";7  String IANNOTATIONTRANSFORMER_FACTORY = "org.testng.IAnnotationTransformer.transform(IFactoryAnnotation annotation, Method method)";8  String METHODINTERCEPTOR_INTERCEPT = "org.testng.IMethodInterceptor.intercept(List<IMethodInstance> methods, ITestContext context)";9  String IEXECUTION_VISUALISER_CONSUME_DOT_DEFINITION = "org.testng.IExecutionVisualiser.consumeDotDefinition(String dotDefinition)";10  String IREPORTER_GENERATE_REPORT = "org.testng.IReporter.generateReport(List<XmlSuite> xmlSuites, List<ISuite> suites, String outputDirectory)";11  String ISUITELISTENER_ON_START = "org.testng.ISuiteListener.onStart()";12  String ISUITELISTENER_ON_FINISH = "org.testng.ISuiteListener.onFinish()";13  String ITESTLISTENER_ON_START_TEST_METHOD = "org.testng.ITestListener.onTestStart(ITestResult result)";14  String ITESTLISTENER_ON_TEST_FAILURE_TEST_METHOD = "org.testng.ITestListener.onTestFailure(ITestResult result)";15  String ITESTLISTENER_ON_TEST_TIMEOUT_TEST_METHOD = "org.testng.ITestListener.onTestFailedWithTimeout(ITestResult result)";16  String ITESTLISTENER_ON_TEST_SUCCESS_TEST_METHOD = "org.testng.ITestListener.onTestSuccess(ITestResult result)";17  String ITESTLISTENER_ON_TEST_SKIPPED_TEST_METHOD = "org.testng.ITestListener.onTestSkipped(ITestResult result)";18  String ITESTLISTENER_ON_START_TEST_TAG = "org.testng.ITestListener.onStart(ITestContext context)";19  String ITESTLISTENER_ON_FINISH_TEST_TAG = "org.testng.ITestListener.onFinish(ITestContext context)";20  String ICLASSLISTENER_ON_BEFORE_CLASS = "org.testng.IClassListener.onBeforeClass(ITestClass testClass)";21  String ICLASSLISTENER_ON_AFTER_CLASS = "org.testng.IClassListener.onAfterClass(ITestClass testClass)";22  String IINVOKEDMETHODLISTENER_BEFORE_INVOCATION = "org.testng.IInvokedMethodListener.beforeInvocation(IInvokedMethod method, ITestResult testResult)";23  String IINVOKEDMETHODLISTENER_BEFORE_INVOCATION_WITH_CONTEXT = "org.testng.IInvokedMethodListener.beforeInvocation(IInvokedMethod method, ITestResult testResult, ITestContext context)";24  String IINVOKEDMETHODLISTENER_AFTER_INVOCATION = "org.testng.IInvokedMethodListener.afterInvocation(IInvokedMethod method, ITestResult testResult)";25  String IINVOKEDMETHODLISTENER_AFTER_INVOCATION_WITH_CONTEXT = "org.testng.IInvokedMethodListener.afterInvocation(IInvokedMethod method, ITestResult testResult, ITestContext context)";26  String IEXECUTIONLISTENER_ON_EXECUTION_START = "org.testng.IExecutionListener.onExecutionStart()";27  String IEXECUTIONLISTENER_ON_EXECUTION_FINISH = "org.testng.IExecutionListener.onExecutionFinish()";28  String IDATAPROVIDERLISTENER_BEFORE_DATA_PROVIDER_EXECUTION = "org.testng.IDataProviderListener.beforeDataProviderExecution(IDataProviderMethod dataProviderMethod, ITestNGMethod method, ITestContext iTestContext)";29  String IDATAPROVIDERLISTENER_AFTER_DATA_PROVIDER_EXECUTION = "org.testng.IDataProviderListener.afterDataProviderExecution(IDataProviderMethod dataProviderMethod, ITestNGMethod method, ITestContext iTestContext)";30  String ICONFIGURATIONLISTENER_BEFORE_CONFIGURATION = "org.testng.IConfigurationListener.beforeConfiguration(ITestResult tr)";31  String ICONFIGURATIONLISTENER_ON_CONFIGURATION_SUCCESS = "org.testng.IConfigurationListener.onConfigurationSuccess(ITestResult itr)";32  String ICONFIGURATIONLISTENER_ON_CONFIGURATION_FAILURE = "org.testng.IConfigurationListener.onConfigurationFailure(ITestResult itr)";33  String ICONFIGURATIONLISTENER_ON_CONFIGURATION_SKIP = "org.testng.IConfigurationListener.onConfigurationSkip(ITestResult itr)";34}...

Source:TestNGListenerAdapterFactory.java

1/*2 * Copyright 2011 the original author or authors.3 *4 * Licensed under the Apache License, Version 2.0 (the "License");5 * you may not use this file except in compliance with the License.6 * You may obtain a copy of the License at7 *8 *      http://www.apache.org/licenses/LICENSE-2.09 *10 * Unless required by applicable law or agreed to in writing, software11 * distributed under the License is distributed on an "AS IS" BASIS,12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.13 * See the License for the specific language governing permissions and14 * limitations under the License.15 */16package org.gradle.api.internal.tasks.testing.testng;17import org.gradle.util.ReflectionUtil;18import org.testng.ITestListener;19import java.lang.reflect.InvocationHandler;20import java.lang.reflect.Method;21import java.lang.reflect.Proxy;22class TestNGListenerAdapterFactory {23    private final ClassLoader classLoader;24    TestNGListenerAdapterFactory(ClassLoader classLoader) {25        this.classLoader = classLoader;26    }27    public ITestListener createAdapter(ITestListener listener) {28        Class<?> testNG6Class = tryLoadClass("org.testng.IConfigurationListener2");29        if (testNG6Class != null) {30            return createProxy(testNG6Class, listener);31        }32        Class<?> testNG5Class = tryLoadClass("org.testng.internal.IConfigurationListener");33        if (testNG5Class != null) {34            return createProxy(testNG5Class, listener);35        }36        throw new UnsupportedOperationException("Neither found interface 'org.testng.IConfigurationListener2' nor interface 'org.testng.internal.IConfigurationListener'. Which version of TestNG are you using?");37    }38    39    private Class<?> tryLoadClass(String name) {40        try {41            return classLoader.loadClass(name);42        } catch (ClassNotFoundException e) {43            return null;44        }45    }46    47    private ITestListener createProxy(Class<?> configListenerClass, final ITestListener listener) {48        return (ITestListener) Proxy.newProxyInstance(classLoader, new Class<?>[] {ITestListener.class, configListenerClass}, new InvocationHandler() {49            public Object invoke(Object proxy, Method method, Object[] args) {50                return ReflectionUtil.invoke(listener, method.getName(), args);51            }52        });53    }54}...

Interface ITestListener

Using AI Code Generation

1package TestNG;2import org.testng.ITestContext;3import org.testng.ITestListener;4import org.testng.ITestResult;5public class TestNGListener implements ITestListener {6    public void onTestStart(ITestResult result) {7        System.out.println("Test Started: " + result.getName());8    }9    public void onTestSuccess(ITestResult result) {10        System.out.println("Test Passed: " + result.getName());11    }12    public void onTestFailure(ITestResult result) {13        System.out.println("Test Failed: " + result.getName());14    }15    public void onTestSkipped(ITestResult result) {16        System.out.println("Test Skipped: " + result.getName());17    }18    public void onTestFailedButWithinSuccessPercentage(ITestResult result) {19        System.out.println("Test Failed but within success percentage: " + result.getName());20    }21    public void onStart(ITestContext context) {22        System.out.println("Test Suite started: " + context.getName());23    }24    public void onFinish(ITestContext context) {25        System.out.println("Test Suite finished: " + context.getName());26    }27}28package TestNG;29import org.testng.annotations.Listeners;30import org.testng.annotations.Test;31@Listeners(TestNGListener.class)32public class TestNGListenerDemo {33    public void test1() {34        System.out.println("I am inside Test1");35    }36    public void test2() {37        System.out.println("I am inside Test2");38    }39    public void test3() {40        System.out.println("I am inside Test3");41    }42}

Interface ITestListener

Using AI Code Generation

1package testng;2import org.testng.ITestContext;3import org.testng.ITestListener;4import org.testng.ITestResult;5public class TestNGListener implements ITestListener {6	public void onFinish(ITestContext arg0) {7		System.out.println("onFinish");8	}9	public void onStart(ITestContext arg0) {10		System.out.println("onStart");11	}

Interface ITestListener

Using AI Code Generation

1public class TestNGListener implements ITestListener {2    public void onTestStart(ITestResult result) {3        System.out.println(result.getName() + " test case started");4    }5    public void onTestSuccess(ITestResult result) {6        System.out.println("The name of the testcase passed is :"+result.getName());7    }8    public void onTestFailure(ITestResult result) {9        System.out.println("The name of the testcase failed is :"+result.getName());10    }11    public void onTestSkipped(ITestResult result) {12        System.out.println("The name of the testcase Skipped is :"+result.getName());13    }14    public void onTestFailedButWithinSuccessPercentage(ITestResult result) {15        System.out.println("Test failed but it is in defined success ratio " + result.getName());16    }17    public void onStart(ITestContext context) {18        System.out.println(context.getName()+" Test case started");19    }20    public void onFinish(ITestContext context) {21        System.out.println("Test case finished");22    }23}24public class TestNGListener implements IInvokedMethodListener {25    public void beforeInvocation(IInvokedMethod method, ITestResult testResult) {26        System.out.println("About to begin executing following method : " + method.getTestMethod().getMethodName());27    }28    public void afterInvocation(IInvokedMethod method, ITestResult testResult) {29        System.out.println("Completed executing following method : " + method.getTestMethod().getMethodName());30    }31}32public class TestNGListener implements ITestNGListener {33    public void onFinish(ITestContext context) {34        System.out.println("Test case finished");35    }36    public void onStart(ITestContext context) {37        System.out.println(context.getName()+" Test case started");38    }39    public void onTestFailedButWithinSuccessPercentage(ITestResult result) {40        System.out.println("Test failed but it is in defined success ratio " + result.getName());41    }

Interface ITestListener

Using AI Code Generation

1package com.testNG;2import org.testng.ITestContext;3import org.testng.ITestListener;4import org.testng.ITestResult;5public class TestNGListeners implements ITestListener {6public void onTestStart(ITestResult result) {7System.out.println("Test case started and details are : " + result.getName());8}9public void onTestSuccess(ITestResult result) {10System.out.println("Test case passed and details are : " + result.getName());11}12public void onTestFailure(ITestResult result) {13System.out.println("Test case failed and details are : " + result.getName());14}15public void onTestSkipped(ITestResult result) {16System.out.println("Test case skipped and details are : " + result.getName());17}18public void onTestFailedButWithinSuccessPercentage(ITestResult result) {19System.out.println("Test case failed within success percentage and details are : " + result.getName());20}21public void onStart(ITestContext context) {22System.out.println("Test case started and details are : " + context.getName());23}24public void onFinish(ITestContext context) {25System.out.println("Test case finished and details are : " + context.getName());26}27}28package com.testNG;29import org.testng.ITestContext;30import org.testng.ITestListener;31import org.testng.ITestNGListener;32import org.testng.ITestResult;33public class TestNGListeners implements ITestListener, ITestNGListener {34public void onTestStart(ITestResult result) {35System.out.println("Test case started and details are : " + result.getName());36}37public void onTestSuccess(ITestResult result) {38System.out.println("Test case passed and details are : " + result.getName());39}40public void onTestFailure(ITestResult result) {41System.out.println("Test case failed and details are : " + result.getName());42}43public void onTestSkipped(ITestResult result) {44System.out.println("Test case skipped and details are : " + result.getName());45}46public void onTestFailedButWithinSuccessPercentage(ITestResult result) {47System.out.println("Test case failed within success percentage and details are : " + result.getName());48}49public void onStart(ITestContext context) {50System.out.println("Test case started and details are : " + context

Interface ITestListener

Using AI Code Generation

1package com.test;2import org.testng.ITestListener;3import org.testng.ITestResult;4public class TestNGListener implements ITestListener {5	public void onTestStart(ITestResult result) {6		System.out.println("Test started: " + result.getName());7	}8	public void onTestSuccess(ITestResult result) {9		System.out.println("Test Success: " + result.getName());10	}11	public void onTestFailure(ITestResult result) {12		System.out.println("Test Failed: " + result.getName());13	}14	public void onTestSkipped(ITestResult result) {15		System.out.println("Test Skipped: " + result.getName());16	}17	public void onTestFailedButWithinSuccessPercentage(ITestResult result) {18		System.out.println("Test Failed but within Success Percentage: " + result.getName());19	}20	public void onStart(ITestContext context) {21		System.out.println("Test Started: " + context.getName());22	}23	public void onFinish(ITestContext context) {24		System.out.println("Test Finished: " + context.getName());25	}26}

Interface ITestListener

Using AI Code Generation

1package com.testng;2import org.testng.ITestListener;3import org.testng.ITestResult;4import org.testng.Reporter;5public class TestNGListener implements ITestListener {6	public void onTestStart(ITestResult result) {7		Reporter.log("Test Started");8	}9	public void onTestSuccess(ITestResult result) {10		Reporter.log("Test Success");11	}12	public void onTestFailure(ITestResult result) {13		Reporter.log("Test Failed");14	}15	public void onTestSkipped(ITestResult result) {16		Reporter.log("Test Skipped");17	}18	public void onTestFailedButWithinSuccessPercentage(ITestResult result) {19		Reporter.log("Test Failed But Within Success Percentage");20	}21	public void onStart(ITestContext context) {22		Reporter.log("Test Started");23	}24	public void onFinish(ITestContext context) {25		Reporter.log("Test Finished");26	}27}28package com.testng;29import org.testng.annotations.Listeners;30import org.testng.annotations.Test;31@Listeners(TestNGListener.class)32public class TestNGListenerDemo {33	public void test1() {34		System.out.println("I am inside Test 1");35	}36	public void test2() {37		System.out.println("I am inside Test 2");38		int i = 1/0;39	}40	public void test3() {41		System.out.println("I am inside Test 3");42	}43}44package com.testng;45import org.testng.annotations.AfterSuite;46import org.testng.annotations.BeforeSuite;47import org.testng.annotations.Test;48public class TestNGListenersDemo2 {49	public void beforeSuite() {50		System.out.println("Before Suite");51	}52	public void test1() {53		System.out.println("I am inside Test 1");54	}55	public void test2() {56		System.out.println("I am inside Test 2");57		int i = 1/0;58	}

Source: Extent Report 3 Add Screenshot

1AdapterInterface buttonListener;23public MyListAdapter (Context context, Cursor c, int flags, AdapterInterface buttonListener)4{5  super(context,c,flags);6  this.buttonListener = buttonListener;7}8

Source:Extent Report 3 Add Screenshot

AdapterInterface buttonListener;

public MyListAdapter (Context context, Cursor c, int flags, AdapterInterface buttonListener)
{
  super(context,c,flags);
  this.buttonListener = buttonListener;
}

Source: self defined testng result listener

1public interface AdapterCallback {2 void onMethodCallback();3}4

TestNG tutorial

TestNG is a Java-based open-source framework for test automation that includes various test types, such as unit testing, functional testing, E2E testing, etc. TestNG is in many ways similar to JUnit and NUnit. But in contrast to its competitors, its extensive features make it a lot more reliable framework. One of the major reasons for its popularity is its ability to structure tests and improve the scripts' readability and maintainability. Another reason can be the important characteristics like the convenience of using multiple annotations, reliance, and priority that make this framework popular among developers and testers for test design. You can refer to the TestNG tutorial to learn why you should choose the TestNG framework.

Chapters

JUnit 5 vs. TestNG: Compare and explore the core differences between JUnit 5 and TestNG from the Selenium WebDriver viewpoint.
Installing TestNG in Eclipse: Start installing the TestNG Plugin and learn how to set up TestNG in Eclipse to begin constructing a framework for your test project.
Create TestNG Project in Eclipse: Get started with creating a TestNG project and write your first TestNG test script.
Automation using TestNG: Dive into how to install TestNG in this Selenium TestNG tutorial, the fundamentals of developing an automation script for Selenium automation testing.
Parallel Test Execution in TestNG: Here are some essential elements of parallel testing with TestNG in this Selenium TestNG tutorial.
Creating TestNG XML File: Here is a step-by-step tutorial on creating a TestNG XML file to learn why and how it is created and discover how to run the TestNG XML file being executed in parallel.
Automation with Selenium, Cucumber & TestNG: Explore for an in-depth tutorial on automation using Selenium, Cucumber, and TestNG, as TestNG offers simpler settings and more features.
JUnit Selenium Tests using TestNG: Start running your regular and parallel tests by looking at how to run test cases in Selenium using JUnit and TestNG without having to rewrite the tests.
Group Test Cases in TestNG: Along with the explanation and demonstration using relevant TestNG group examples, learn how to group test cases in TestNG.
Prioritizing Tests in TestNG: Get started with how to prioritize test cases in TestNG for Selenium automation testing.
Assertions in TestNG: Examine what TestNG assertions are, the various types of TestNG assertions, and situations that relate to Selenium automated testing.
DataProviders in TestNG: Deep dive into learning more about TestNG's DataProvider and how to effectively use it in our test scripts for Selenium test automation.
Parameterization in TestNG: Here are the several parameterization strategies used in TestNG tests and how to apply them in Selenium automation scripts.
TestNG Listeners in Selenium WebDriver: Understand the various TestNG listeners to utilize them effectively for your next plan when working with TestNG and Selenium automation.
TestNG Annotations: Learn more about the execution order and annotation attributes, and refer to the prerequisites required to set up TestNG.
TestNG Reporter Log in Selenium: Find out how to use the TestNG Reporter Log and learn how to eliminate the need for external software with TestNG Reporter Class to boost productivity.
TestNG Reports in Jenkins: Discover how to generate TestNG reports in Jenkins if you want to know how to create, install, and share TestNG reports in Jenkins.

Certification

You can push your abilities to do automated testing using TestNG and advance your career by earning a TestNG certification. Check out our TestNG certification.