Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use Interface IMethodInstance class of org.testng package

Best Testng code snippet using org.testng.Interface IMethodInstance

Source:IMethodInterceptorClass.java

1package common;2import java.lang.annotation.Retention;3import java.lang.annotation.Target;4import java.util.ArrayList;5import java.util.List;6import org.testng.IMethodInstance;7import org.testng.IMethodInterceptor;8import org.testng.ITestContext;9import org.testng.ITestNGListener;10public interface IMethodInterceptorClass extends ITestNGListener {11	  List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context);12	}13/*14public class IMethodInterceptorClass implements IMethodInterceptor {15	16	@Override17	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {18	    List<IMethodInstance> methodlist = new ArrayList<IMethodInstance>();19	    // Read these flags from somewhere, system var / test context / file or20	    // where ever21	    Boolean shouldRunTest1 = Boolean.valueOf(context.getAttribute("SHOULD_RUN_TEST1")22	            .toString());23	    Boolean shouldRunTest2 = Boolean.valueOf(context.getAttribute("SHOULD_RUN_TEST2")24	            .toString());25	    for (IMethodInstance iMethodInstance : methods) {26	        // decide based on method name / group / priority / description or27	        // what ever28	        String methodName = iMethodInstance.getMethod().getMethodName();29	        if (iMethodInstance.getMethod().isTest()) {30	            if (shouldRunTest1 && methodName.equals("testCase1")) {31	                methodlist.add(iMethodInstance);32	            } else if (shouldRunTest2 && methodName.equals("testCase2")) {33	                methodlist.add(iMethodInstance);34	            }35	        }36	    }37	    // Here we return the test cases to be run38	    return methodlist;39	}40	41}42*/	43	44	...

Source:TestNGClassListener.java

1/*2 * Copyright 2017 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.testng.IMethodInstance;18import org.testng.ITestClass;19/**20 * Listener that reacts if a test class is started and finished.21 * This listener is invoked if the executing TestNG version is >= 6.9.10 which introduces the {@code org.testng.IClassListener}.22 *23 * @see TestNGListenerAdapterFactory24 */25public interface TestNGClassListener {26    void onBeforeClass(ITestClass testClass);27    /**28     * for compatibility reasons with testng 6.9.1029     */30    void onBeforeClass(ITestClass testClass, IMethodInstance mi);31    void onAfterClass(ITestClass testClass);32    /**33     * for compatibility reasons with testng 6.9.1034     */35    void onAfterClass(ITestClass testClass, IMethodInstance mi);36}...

Source:MethodInterceptorListener.java

1package com.ad.listeners;2import java.util.ArrayList;3import java.util.HashSet;4import java.util.List;5import java.util.Set;6import org.testng.IMethodInstance;7import org.testng.IMethodInterceptor;8import org.testng.ITestContext;9import org.testng.annotations.Test;10/**11 * 12 * IMethodInterceptor interface is used to modify the list of test methods that we want TestNG to run. 13 * It will be invoked right before TestNG starts invoking test methods.14 * It has just one method to implement intercept which returns the altered list of methods.15 *16 * **/17public class MethodInterceptorListener implements IMethodInterceptor {18	@Override19	public List<IMethodInstance> intercept(List<IMethodInstance> methods,20			ITestContext context) {21		// TODO Auto-generated method stub22		List result = new ArrayList();23		for (IMethodInstance m : methods) {24			Test test = m.getMethod().getMethod().getAnnotation(Test.class);25			Set groups = new HashSet();26			for (String group : test.groups()) {27				groups.add(group);28				29			}30            if (groups.contains("perf")) {31            	result.add(m);32            }else{33            	String testMethod = m.getMethod().getMethod().getName();34                System.out.println(testMethod+ " not a performance test so remove it");35            }36		}37		return result;38	}39}...

Source:ExecutionOrdering.java

1package clear.utils;2import java.util.Collections;3import java.util.Comparator;4import java.util.List;5import org.testng.IMethodInstance;6import org.testng.IMethodInterceptor;7import org.testng.ITestContext;8/**9* This class is implementation of IMethodInterceptor interface, to sort the orderting of test10* @author ptt4kor11* @version 1.012*/13public class ExecutionOrdering implements IMethodInterceptor  {14  @Override15	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {16		17		 Collections.sort(methods, new MyComparator());18		 return methods;19	}20	21	 public static class MyComparator implements Comparator<IMethodInstance> {22		 23		 @Override24		 public int compare(IMethodInstance o1, IMethodInstance o2) {25			// o1.getMethod().getConstructorOrMethod().get26			// o1.getInstance().toString()27		 return o1.getInstance().toString().compareTo(o2.getInstance().toString());28		 }29		  30		 }31}...

Interface IMethodInstance

Using AI Code Generation

1import org.testng.IMethodInstance;2import org.testng.IMethodInterceptor;3import org.testng.ITestContext;4import org.testng.ITestNGMethod;5import org.testng.annotations.Test;6import java.util.ArrayList;7import java.util.List;8public class MethodInterceptor implements IMethodInterceptor {9    public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {10        List<IMethodInstance> result = new ArrayList<IMethodInstance>();11        for (IMethodInstance method : methods) {12            ITestNGMethod testMethod = method.getMethod();13            if (testMethod.getConstructorOrMethod().getMethod().isAnnotationPresent(Test.class)) {14                String[] groups = testMethod.getGroups();15                if (groups.length > 0) {16                    for (String group : groups) {17                        if (group.equals("group1")) {18                            result.add(method);19                        }20                    }21                }22            }23        }24        return result;25    }26}27import org.testng.Assert;28import org.testng.annotations.Test;29public class TestClass {30    @Test(groups = "group1")31    public void test1() {32        Assert.assertEquals(1, 1);33    }34    @Test(groups = "group2")35    public void test2() {36        Assert.assertEquals(1, 1);37    }38}39import org.testng.annotations.Test;40@Test(groups = "group1")41public class TestClass2 {42    public void test1() {43        Assert.assertEquals(1, 1);44    }45    public void test2() {46        Assert.assertEquals(1, 1);47    }48}49import org.testng.TestNG;50import org.testng.annotations.Test;51import java.util.ArrayList;52import java.util.List;53public class TestRunner {54    public static void main(String[] args) {55        TestNG runner = new TestNG();56        List<String> suites = new ArrayList<String>();57        suites.add("testng.xml");58        runner.setTestSuites(suites);59        runner.run();60    }61}

Interface IMethodInstance

Using AI Code Generation

1import org.testng.IMethodInstance;2import org.testng.IMethodInterceptor;3import org.testng.ITestContext;4import java.util.List;5import java.util.ArrayList;6import java.util.Collections;7import java.util.Comparator;8public class MyMethodsInterceptor implements IMethodInterceptor {9    public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {10        List<IMethodInstance> result = new ArrayList<IMethodInstance>(methods);11        Collections.sort(result, new Comparator<IMethodInstance>() {12            public int compare(IMethodInstance o1, IMethodInstance o2) {13                return o1.getMethod().getMethod().getAnnotation(Test.class).priority() - o2.getMethod().getMethod().getAnnotation(Test.class).priority();14            }15        });16        return result;17    }18}19import org.testng.ITestContext;20import org.testng.ITestListener;21import org.testng.ITestResult;22import java.util.logging.Logger;23public class TestListener implements ITestListener {24    private static Logger log = Logger.getLogger(TestListener.class.getName());25    public void onTestStart(ITestResult result) {26        log.info("Test Started: " + result.getName());27    }28    public void onTestSuccess(ITestResult result) {29        log.info("Test Passed: " + result.getName());30    }31    public void onTestFailure(ITestResult result) {32        log.info("Test Failed: " + result.getName());33    }34    public void onTestSkipped(ITestResult result) {35        log.info("Test Skipped: " + result.getName());36    }37    public void onTestFailedButWithinSuccessPercentage(ITestResult result) {38        log.info("Test Failed but within Success Percentage: " + result.getName());39    }40    public void onStart(ITestContext context) {41        log.info("Test Started: " + context.getName());42    }43    public void onFinish(ITestContext context) {44        log.info("Test Finished: " + context.getName());45    }46}47import org.testng.IAnnotationTransformer;48import org.testng.annotations.ITestAnnotation;49import java.lang.reflect.Constructor;50import java.lang.reflect.Method;51public class MyTransformer implements IAnnotationTransformer {52    public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor, Method testMethod) {

Interface IMethodInstance

Using AI Code Generation

1import org.testng.IMethodInstance;2import org.testng.IMethodInterceptor;3import org.testng.ITestContext;4import java.util.List;5public class TestNGInterceptor implements IMethodInterceptor {6	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {7		return methods;8	}9}10import org.testng.IMethodInstance;11import org.testng.IMethodInterceptor;12import org.testng.ITestContext;13import java.util.List;14public class TestNGInterceptor implements IMethodInterceptor {15	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {16		return methods;17	}18}19import org.testng.IMethodInstance;20import org.testng.IMethodInterceptor;21import org.testng.ITestContext;22import java.util.List;23public class TestNGInterceptor implements IMethodInterceptor {24	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {25		return methods;26	}27}28import org.testng.IMethodInstance;29import org.testng.IMethodInterceptor;30import org.testng.ITestContext;31import java.util.List;32public class TestNGInterceptor implements IMethodInterceptor {33	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {34		return methods;35	}36}37import org.testng.IMethodInstance;38import org.testng.IMethodInterceptor;39import org.testng.ITestContext;40import java.util.List;41public class TestNGInterceptor implements IMethodInterceptor {42	public List<IMethodInstance> intercept(List<IMethodInstance> methods, ITestContext context) {43		return methods;44	}45}46import org.testng.IMethodInstance;47import org.testng.IMethodInterceptor;48import org.testng.ITestContext;49import java.util.List;

Interface IMethodInstance

Using AI Code Generation

1public void getMethodInstance() {2    IMethodInstance instance = null;3    IMethodInstance result = instance.getMethodInstance();4}5public void intercept() {6    IMethodInstance instance = null;7    List<IMethodInstance> result = instance.intercept();8}9public void includeMethod() {10    IMethodSelector instance = null;11    boolean result = instance.includeMethod();12}13public void newInstance() {14    IObjectFactory instance = null;15    Object result = instance.newInstance();16}17public void newInstance() {18    IObjectFactory2 instance = null;19    Object result = instance.newInstance();20}21public void newInstance() {22    IObjectFactory2 instance = null;23    Object result = instance.newInstance();24}25public void newInstance() {26    IObjectFactory2 instance = null;27    Object result = instance.newInstance();28}29public void newInstance() {30    IObjectFactory2 instance = null;31    Object result = instance.newInstance();32}

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.