How to use Interface ITestMethodFinder class of org.testng package

Best Testng code snippet using org.testng.Interface ITestMethodFinder

Source:JUnitMethodFinder.java Github

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1package org.testng.junit;2import org.testng.ITestMethodFinder;3import org.testng.ITestNGMethod;4import org.testng.collections.Lists;5import org.testng.internal.ConstructorOrMethod;6import org.testng.internal.TestNGMethod;7import org.testng.internal.annotations.IAnnotationFinder;8import org.testng.internal.reflect.ReflectionHelper;9import org.testng.xml.XmlTest;10import java.lang.reflect.Method;11import java.util.HashSet;12import java.util.List;13import java.util.Set;14/**15 * This class locates all test and configuration methods according to JUnit. It is used to change16 * the strategy used by TestRunner to locate its test methods.17 *18 * @author Cedric Beust, May 3, 200419 */20public class JUnitMethodFinder implements ITestMethodFinder {21 private final String m_testName;22 private final IAnnotationFinder m_annotationFinder;23 public JUnitMethodFinder(String testName, IAnnotationFinder finder) {24 m_testName = testName;25 m_annotationFinder = finder;26 }27 @Override28 public ITestNGMethod[] getTestMethods(Class cls, XmlTest xmlTest) {29 return privateFindTestMethods(30 method -> method.getName().startsWith("test") && method.getParameterTypes().length == 0,31 cls);32 }33 private ITestNGMethod[] privateFindTestMethods(INameFilter filter, Class cls) {34 List<ITestNGMethod> vResult = Lists.newArrayList();35 // We do not want to walk up the class hierarchy and accept the36 // same method twice (e.g. setUp) which would lead to double-invocation.37 // All relevant JUnit methods are parameter-less so we store accepted38 // method names in a Set to filter out duplicates.39 Set<String> acceptedMethodNames = new HashSet<>();40 //41 // Collect all methods that start with test42 //43 Class current = cls;44 while (!(current == Object.class)) {45 Method[] allMethods = ReflectionHelper.excludingMain(current);46 for (Method allMethod : allMethods) {47 ITestNGMethod m =48 new TestNGMethod(49 /* allMethods[i].getDeclaringClass(), */ allMethod,50 m_annotationFinder,51 null,52 null); /* @@@ */53 ConstructorOrMethod method = m.getConstructorOrMethod();54 String methodName = method.getName();55 if (filter.accept(method) && !acceptedMethodNames.contains(methodName)) {56 vResult.add(m);57 acceptedMethodNames.add(methodName);58 }59 }60 current = current.getSuperclass();61 }62 return vResult.toArray(new ITestNGMethod[0]);63 }64 @Override65 public ITestNGMethod[] getBeforeTestMethods(Class cls) {66 return privateFindTestMethods(method -> "setUp".equals(method.getName()), cls);67 }68 @Override69 public ITestNGMethod[] getAfterTestMethods(Class cls) {70 return privateFindTestMethods(method -> "tearDown".equals(method.getName()), cls);71 }72 @Override73 public ITestNGMethod[] getAfterClassMethods(Class cls) {74 return new ITestNGMethod[0];75 }76 @Override77 public ITestNGMethod[] getBeforeClassMethods(Class cls) {78 return new ITestNGMethod[0];79 }80 @Override81 public ITestNGMethod[] getBeforeSuiteMethods(Class cls) {82 return new ITestNGMethod[0];83 }84 @Override85 public ITestNGMethod[] getAfterSuiteMethods(Class cls) {86 return new ITestNGMethod[0];87 }88 @Override89 public ITestNGMethod[] getBeforeTestConfigurationMethods(Class testClass) {90 return new ITestNGMethod[0];91 }92 @Override93 public ITestNGMethod[] getAfterTestConfigurationMethods(Class testClass) {94 return new ITestNGMethod[0];95 }96 @Override97 public ITestNGMethod[] getBeforeGroupsConfigurationMethods(Class testClass) {98 return new ITestNGMethod[0];99 }100 @Override101 public ITestNGMethod[] getAfterGroupsConfigurationMethods(Class testClass) {102 return new ITestNGMethod[0];103 }104}105/////////////106interface INameFilter {107 boolean accept(ConstructorOrMethod method);108}...

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Interface ITestMethodFinder

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1import org.testng.ITestMethodFinder;2import org.testng.ITestNGMethod;3import org.testng.ITestContext;4import org.testng.ITestResult;5import org.testng.IAnnotationTransformer;6import org.testng.IClass;7import org.testng.IClassListener;8import org.testng.IConfigurable;9import org.testng.IConfigurationListener;10import org.testng.IDataProviderListener;11import org.testng.IInvokedMethod;12import org.testng.IInvokedMethodListener;13import org.testng.IMethodInterceptor;14import org.testng.IMethodSelector;15import org.testng.IMethodSelectorContext;16import org.testng.IMethodSelectorListener;17import org.testng.IObjectFactory;18import org.testng.IObjectFactory2;19import org.testng.IRetryAnalyzer;20import org.testng.ISuite;21import org.testng.ISuiteListener;22import org.testng.ISuiteResult;23import org.testng.ITest;24import org.testng.ITestAnnotation

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Interface ITestMethodFinder

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1import org.testng.ITestMethodFinder;2import org.testng.ITestNGMethod;3import org.testng.ITestContext;4import org.testng.ITestResult;5import org.testng.IAnnotationTransformer;6import org.testng.IRetryAnalyzer;7import org.testng.ITestListener;8import org.testng.IInvokedMethodListener;9import org.testng.IInvokedMethod;10import org.testng.IHookable;11import org.testng.IHookCallBack;12import org.testng.IHookable;13import org.testng.IHookCallBack;14import org.testng.IHookable;15import org.testng.IHookCallBack;16import org.testng.IHookable;17import org.testng.IHookCallBack;18import org.testng.IHookable;19import org.testng.IHookCallBack;20import org.testng.IHookable;21import org.testng.IHookCallBack;22import org.testng.IHookable;23import org.testng.IHookCallBack;24import org.testng.IHookable

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Interface ITestMethodFinder

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1import org.testng.ITestMethodFinder;2import org.testng.ITestNGMethod;3import org.testng.ITestResult;4import org.testng.TestNG;5import org.testng.annotations.Test;6import org.testng.internal.MethodHelper;7import org.testng.xml.XmlSuite;8import java.util.ArrayList;9import java.util.Arrays;10import java.util.List;11public class TestNGTest {12 public void test() {13 TestNG testNG = new TestNG();14 testNG.setTestClasses(new Class[]{Test1.class, Test2.class});15 testNG.setMethodSelectors(Arrays.asList(new ITestMethodFinder() {16 public List<ITestNGMethod> getTestMethods(List<ITestNGMethod> testMethods, XmlSuite suite) {17 List<ITestNGMethod> testNGMethods = new ArrayList<>();18 for (ITestNGMethod method : testMethods) {19 if (method.getTestClass().getRealClass().equals(Test1.class)) {20 testNGMethods.add(method);21 }22 }23 return testNGMethods;24 }25 }));26 testNG.run();27 }28 public void test2() {29 TestNG testNG = new TestNG();30 testNG.setTestClasses(new Class[]{Test1.class, Test2.class});31 testNG.setMethodSelectors(Arrays.asList(new ITestMethodFinder() {32 public List<ITestNGMethod> getTestMethods(List<ITestNGMethod> testMethods, XmlSuite suite) {33 List<ITestNGMethod> testNGMethods = new ArrayList<>();34 for (ITestNGMethod method : testMethods) {35 if (method.getTestClass().getRealClass().equals(Test2.class)) {36 testNGMethods.add(method);37 }38 }39 return testNGMethods;40 }41 }));42 testNG.run();43 }44 public void test3() {45 TestNG testNG = new TestNG();46 testNG.setTestClasses(new Class[]{Test1.class, Test2.class});47 testNG.setMethodSelectors(Arrays.asList(new ITestMethodFinder() {48 public List<ITestNGMethod> getTestMethods(List<ITestNGMethod> testMethods, XmlSuite suite) {49 List<ITestNGMethod> testNGMethods = new ArrayList<>();50 for (ITestNGMethod method : testMethods) {51 if (method.getTestClass

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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

  1. JUnit 5 vs. TestNG: Compare and explore the core differences between JUnit 5 and TestNG from the Selenium WebDriver viewpoint.
  2. 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.
  3. Create TestNG Project in Eclipse: Get started with creating a TestNG project and write your first TestNG test script.
  4. 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.
  5. Parallel Test Execution in TestNG: Here are some essential elements of parallel testing with TestNG in this Selenium TestNG tutorial.
  6. 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.
  7. 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.
  8. 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.
  9. Group Test Cases in TestNG: Along with the explanation and demonstration using relevant TestNG group examples, learn how to group test cases in TestNG.
  10. Prioritizing Tests in TestNG: Get started with how to prioritize test cases in TestNG for Selenium automation testing.
  11. Assertions in TestNG: Examine what TestNG assertions are, the various types of TestNG assertions, and situations that relate to Selenium automated testing.
  12. 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.
  13. Parameterization in TestNG: Here are the several parameterization strategies used in TestNG tests and how to apply them in Selenium automation scripts.
  14. 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.
  15. TestNG Annotations: Learn more about the execution order and annotation attributes, and refer to the prerequisites required to set up TestNG.
  16. 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.
  17. 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.

YouTube

Watch this complete tutorial to learn how you can leverage the capabilities of the TestNG framework for Selenium automation testing.

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