How to use loadClasses method of org.testng.xml.Xml class

Best Testng code snippet using org.testng.xml.Xml.loadClasses

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...86 * property from test configuration87 * 88 * @return the List of XmlClass that are a part of this Test89 */​90 public List<XmlClass> getXmlClasses(boolean loadClasses) {91 List<XmlClass> xmlClasses = null;92 List<String> classes = this.getClassNames();93 if (classes != null) {94 xmlClasses = new ArrayList<XmlClass>();95 for (int i = 0; i < classes.size(); i++) {96 /​/​ new XmlClass, loadClasses determines if classes are loaded.97 /​/​ If not loaded and classes are not found, testng will throw98 /​/​ excpetion during execution99 XmlClass cls = new XmlClass(classes.get(i), i, loadClasses);100 xmlClasses.add(i, cls);101 }102 }103 return xmlClasses;104 }105 /​**106 * Returns this test as a TestNG XmlTest107 * 108 * @param suite109 * @param loadClasses whether to load classes when creating the XmlTest110 * @return this test as TestNG XmlTest111 */​112 public XmlTest getTestAsXmlTest(XmlSuite suite, boolean loadClasses) {113 XmlTest xmltest = new XmlTest(suite);114 xmltest.setName(this.id + "." + this.name); /​/​ set name like115 /​/​ "<id>.<name>"116 /​/​ add parameters to this test case117 Properties params = this.getParametersAsProperties();118 for (Enumeration<?> e = params.keys(); e.hasMoreElements();) {119 String key = (String) e.nextElement();120 xmltest.addParameter(key, params.getProperty(key));121 }122 /​/​ add test classes123 xmltest.setXmlClasses(this.getXmlClasses(loadClasses));124 return xmltest;125 }126 /​*127 * (non-Javadoc)128 * 129 * @see java.lang.Object#toString()130 */​131 @Override132 public String toString() {133 return "ExcelTestCase [Id: " + id + ", Name: " + name + ", Description: "134 + description + ", Configuration: " + configuration + ", Parameters: "135 + parameters + "]";136 }137}...

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...12import java.io.IOException;13import java.io.InputStream;14public class DomXmlParser extends XMLParser<XmlSuite> implements ISuiteParser {15 @Override16 public XmlSuite parse(String currentFile, InputStream inputStream, boolean loadClasses) {17 XmlSuite result = null;18 try {19 result = parse2(currentFile, inputStream, loadClasses);20 } catch (Exception e) {21 Logger.getLogger(DomXmlParser.class).error(e.getMessage(), e);22 }23 return result;24 }25 @Override26 public boolean accept(String fileName) {27 return Parser.hasFileScheme(fileName) && fileName.endsWith(".xml");28 }29 public XmlSuite parse2(String currentFile, InputStream inputStream, boolean loadClasses)30 throws ParserConfigurationException, SAXException, IOException {31 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();32 factory.setNamespaceAware(true); /​/​ never forget this!33 DocumentBuilder builder = factory.newDocumentBuilder();34 Document doc = builder.parse(inputStream);35 DomUtil xpu = new DomUtil(doc);36 XmlSuite result = new XmlSuite();37 xpu.populate(result);38 System.out.println(result.toXml());39 return result;40 }41}...

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loadClasses

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1package com.test;2import org.testng.xml.XmlClass;3import org.testng.xml.XmlSuite;4import org.testng.xml.XmlTest;5import java.util.ArrayList;6import java.util.List;7public class TestNGTest {8 public static void main(String[] args) {9 XmlSuite suite = new XmlSuite();10 suite.setName("MySuite");11 XmlTest test = new XmlTest(suite);12 test.setName("MyTest");13 List<XmlClass> classes = new ArrayList<XmlClass>();14 classes.add(new XmlClass("com.test.Test1"));15 classes.add(new XmlClass("com.test.Test2"));16 test.setXmlClasses(classes);17 List<XmlSuite> suites = new ArrayList<XmlSuite>();18 suites.add(suite);19 org.testng.TestNG tng = new org.testng.TestNG();20 tng.setXmlSuites(suites);21 tng.run();22 }23}24package com.test;25import org.testng.annotations.Test;26public class Test1 {27 public void test1(){28 System.out.println("Test1");29 }30}31package com.test;32import org.testng.annotations.Test;33public class Test2 {34 public void test2(){35 System.out.println("Test2");36 }37}

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loadClasses

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1XmlSuite suite = new XmlSuite();2suite.setName("Suite");3XmlTest test = new XmlTest(suite);4test.setName("Test");5List<XmlClass> classes = new ArrayList<XmlClass>();6classes.add(new XmlClass("testng.examples.simple.SimpleTest"));7test.setXmlClasses(classes);8List<XmlSuite> suites = new ArrayList<XmlSuite>();9suites.add(suite);10TestNG tng = new TestNG();11tng.setXmlSuites(suites);12tng.run();

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loadClasses

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1Xml.loadClasses();2XmlClass.loadClasses();3XmlTest.loadClasses();4XmlSuite.loadClasses();5XmlPackage.loadClasses();6XmlGroups.loadClasses();7XmlRun.loadClasses();8XmlClass.loadClasses();

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loadClasses

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1import java.io.BufferedReader;2import java.io.FileReader;3import java.io.IOException;4public class ReadFile {5 public static void main(String[] args) {6 BufferedReader br = null;7 try {8 br = new BufferedReader(new FileReader("C:\\test.txt"));9 String line = null;10 while ((line = br.readLine()) != null) {11 System.out.println(line);12 }13 } catch (IOException e) {14 e.printStackTrace();15 } finally {16 if (br != null) {17 try {18 br.close();19 } catch (IOException e) {20 e.printStackTrace();21 }22 }23 }24 }25}26Exception in thread "main" java.io.FileNotFoundException: C:\test.txt (The system cannot find the file specified)27 at java.io.FileInputStream.open(Native Method)28 at java.io.FileInputStream.<init>(FileInputStream.java:146)29 at java.io.FileReader.<init>(FileReader.java:58)30 at ReadFile.main(ReadFile.java:8)

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TestNG dependsOnMethods from different class

You've added transitive dependencies (dependencies of your dependencies) to your pom. These should be the same version as the ones required by your dependencies. Otherwise you'll see problems like the ones you see now.

So you should remove: cucumber-jvm-deps, cucumber-core and gherkin. Maven will ensure they're present and have the correct version.

You can inspect your dependency tree by using mvn dependency:tree -Dverbose. See Apache Maven Dependency Plugin - Resolving conflicts using the dependency tree .

https://stackoverflow.com/questions/55461861/java-lang-noclassdeffounderror-gherkin-igherkindialectprovider-while-running-se

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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.
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