{"id":22030,"date":"2025-12-22T13:46:18","date_gmt":"2025-12-22T13:46:18","guid":{"rendered":"https:\/\/www.kaashivinfotech.com\/blog\/?p=22030"},"modified":"2025-12-23T10:46:47","modified_gmt":"2025-12-23T10:46:47","slug":"what-is-testng-selenium-framework","status":"publish","type":"post","link":"https:\/\/www.kaashivinfotech.com\/blog\/what-is-testng-selenium-framework\/","title":{"rendered":"What Is TestNG? The Ultimate &#038; Powerful Guide to Selenium Automation (2026)"},"content":{"rendered":"<p>If you\u2019re a <strong>manual tester planning to move into automation<\/strong> or a <strong>fresher learning Selenium<\/strong>, you\u2019ll hear one word again and again \u2014 <strong>TestNG<\/strong>.<\/p>\n<p>But what exactly is TestNG?<br \/>\nWhy is it so popular in Selenium automation?<br \/>\nAnd why do almost all real-time automation frameworks use <strong>TestNG framework<\/strong>?<\/p>\n<p>Let\u2019s break it down step by step \u2014 no jargon, no boring theory.<\/p>\n<figure id=\"attachment_22033\" aria-describedby=\"caption-attachment-22033\" style=\"width: 1536px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-22033\" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG.webp\" alt=\"TestNG\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-300x200.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-1024x683.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-768x512.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-440x293.webp 440w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-680x453.webp 680w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption id=\"caption-attachment-22033\" class=\"wp-caption-text\">TestNG<\/figcaption><\/figure>\n<hr \/>\n<h2>What is TestNG?<\/h2>\n<p><strong>TestNG<\/strong> is a <strong>testing framework for Java<\/strong> inspired by JUnit and NUnit.<br \/>\nThe name <strong>TestNG<\/strong> stands for <strong>\u201cTest Next Generation\u201d<\/strong>.<\/p>\n<p>In simple words:<\/p>\n<blockquote><p><strong>TestNG helps you design, execute, manage, and report automated test cases efficiently.<\/strong><\/p><\/blockquote>\n<h3>Why TestNG Exists<\/h3>\n<p>JUnit was good, but it had limitations:<\/p>\n<ul>\n<li>No easy way to run tests in parallel<\/li>\n<li>Limited test configuration<\/li>\n<li>Weak reporting<\/li>\n<\/ul>\n<p>TestNG solved these problems and became the <strong>default framework for Selenium automation<\/strong>.<\/p>\n<p>\ud83d\udc49 That\u2019s why \u201c<strong>what is TestNG<\/strong>\u201d is one of the most searched automation questions today.<\/p>\n<hr \/>\n<h2>What is TestNG in Selenium?<\/h2>\n<p>This is the most important question \u2014 and often the most misunderstood one.<\/p>\n<h3>Simple Answer<\/h3>\n<p><strong>TestNG in Selenium is a testing framework that manages how Selenium test cases are organized, executed, and reported.<\/strong><\/p>\n<p>Selenium focuses on <strong>browser interaction<\/strong> \u2014 opening pages, clicking elements, and entering data.<br \/>\nTestNG focuses on <strong>test control<\/strong> \u2014 deciding <em>what<\/em> runs, <em>when<\/em> it runs, and <em>how<\/em> results are tracked.<\/p>\n<p>That clear separation of responsibility is why they work so well together.<\/p>\n<hr \/>\n<h2>Why Selenium Alone Is Not Enough<\/h2>\n<p>Selenium is excellent at automating browsers, but it does not handle <strong>test management<\/strong>.<\/p>\n<p>Consider a real project with:<\/p>\n<ul>\n<li>Hundreds of test cases<\/li>\n<li>Multiple browsers and environments<\/li>\n<li>Daily or nightly regression runs<\/li>\n<\/ul>\n<p>Now think about common requirements:<\/p>\n<ul>\n<li>Running only failed test cases<\/li>\n<li>Executing tests in parallel to save time<\/li>\n<li>Separating smoke, regression, and sanity tests<\/li>\n<\/ul>\n<p>These are <strong>framework-level concerns<\/strong>, and Selenium does not address them by design.<\/p>\n<p>This gap is exactly where TestNG fits in.<\/p>\n<figure id=\"attachment_22034\" aria-describedby=\"caption-attachment-22034\" style=\"width: 1536px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-22034\" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG.webp\" alt=\"Selenium and TestNG\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG-300x200.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG-1024x683.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG-768x512.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG-440x293.webp 440w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/Selenium-and-TestNG-680x453.webp 680w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption id=\"caption-attachment-22034\" class=\"wp-caption-text\">Selenium and TestNG<\/figcaption><\/figure>\n<hr \/>\n<h2>How TestNG Complements Selenium<\/h2>\n<p>When TestNG is used with Selenium, it adds the control layer that Selenium lacks:<\/p>\n<ul>\n<li>Structured test execution flow<\/li>\n<li>Annotations to manage setup and teardown<\/li>\n<li>XML-based configuration for selective execution<\/li>\n<li>Parallel execution support<\/li>\n<li>Dependency handling between test cases<\/li>\n<li>Built-in test reporting<\/li>\n<\/ul>\n<p>Together, Selenium and TestNG form a <strong>complete, production-ready automation solution<\/strong>.<\/p>\n<hr \/>\n<h2>TestNG Framework in Selenium &#8211; How It Works in Real Projects<\/h2>\n<p>Many beginners learn TestNG syntax but struggle to explain the <strong>TestNG framework in Selenium<\/strong> from a project perspective.<\/p>\n<p>Here\u2019s the practical view.<\/p>\n<figure id=\"attachment_22037\" aria-describedby=\"caption-attachment-22037\" style=\"width: 1536px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-22037\" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart.webp\" alt=\"TestNG Execution Flowchart\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart-300x200.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart-1024x683.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart-768x512.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart-440x293.webp 440w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Execution-Flowchart-680x453.webp 680w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption id=\"caption-attachment-22037\" class=\"wp-caption-text\">TestNG Execution Flowchart<\/figcaption><\/figure>\n<hr \/>\n<h2>What Is a TestNG Framework?<\/h2>\n<p>A <strong>TestNG framework<\/strong> is a structured automation setup where each tool has a clear role:<\/p>\n<ul>\n<li><strong>Selenium<\/strong> performs browser actions<\/li>\n<li><strong>TestNG<\/strong> controls test execution and lifecycle<\/li>\n<li><strong>Maven<\/strong> manages dependencies and builds<\/li>\n<li>The framework ensures scalability and maintainability<\/li>\n<\/ul>\n<p>This is the model followed in real-world automation teams.<\/p>\n<hr \/>\n<h2>High-Level TestNG Framework Flow<\/h2>\n<p>In a typical Selenium project using TestNG:<\/p>\n<ol>\n<li>TestNG reads configuration from the XML file<\/li>\n<li>Test cases are selected and ordered<\/li>\n<li>Selenium executes browser interactions<\/li>\n<li>TestNG records test results<\/li>\n<li>Reports are generated automatically<\/li>\n<\/ol>\n<p>The key point here is <strong>predictability<\/strong> \u2014 test execution is planned, not random.<\/p>\n<hr \/>\n<h2>Where TestNG Fits in the Framework<\/h2>\n<p>Within the framework, TestNG is responsible for:<\/p>\n<ul>\n<li>Defining the test lifecycle<\/li>\n<li>Controlling execution order<\/li>\n<li>Grouping test cases (smoke, regression, etc.)<\/li>\n<li>Running tests in parallel<\/li>\n<li>Retrying failed tests<\/li>\n<li>Integrating listeners and reports<\/li>\n<\/ul>\n<p>This execution control is why TestNG is often called the <strong>backbone of Selenium frameworks<\/strong>.<\/p>\n<hr \/>\n<h2>Why Companies Prefer TestNG Frameworks<\/h2>\n<p>Companies prefer the <strong>TestNG framework in Selenium<\/strong> because it:<\/p>\n<ul>\n<li>Handles large test suites efficiently<\/li>\n<li>Integrates easily with CI\/CD tools<\/li>\n<li>Reduces overall execution time<\/li>\n<li>Improves test organization and maintenance<\/li>\n<\/ul>\n<p>For anyone targeting <strong>mid-level automation roles<\/strong>, understanding this framework-level usage of TestNG is essential.<\/p>\n<hr \/>\n<h3>\ud83d\udd39 Where TestNG Is Used in CI\/CD Pipelines<\/h3>\n<p>In real-world projects, TestNG is deeply integrated into CI\/CD pipelines to automate continuous testing.<\/p>\n<p>TestNG is commonly used with:<\/p>\n<p><strong>Jenkins<\/strong><br \/>\nTestNG test suites are triggered automatically whenever new code is pushed. Jenkins runs TestNG tests and publishes HTML reports.<\/p>\n<p><strong>Maven<\/strong><br \/>\nMaven manages TestNG dependencies and executes tests using the <code class=\"\" data-line=\"\">mvn test<\/code> command, making automation builds consistent.<\/p>\n<p><strong>Nightly Regression Runs<\/strong><br \/>\nLarge regression suites are scheduled to run every night using TestNG XML configurations.<\/p>\n<p><strong>Parallel Grid Execution<\/strong><br \/>\nTestNG supports parallel execution across browsers and machines using Selenium Grid, reducing execution time drastically.<\/p>\n<p>\ud83d\udc49 This CI\/CD compatibility is one major reason why TestNG is preferred in enterprise Selenium automation projects.<\/p>\n<hr \/>\n<h2>Why TestNG Framework is So Popular<\/h2>\n<p>Here\u2019s why most companies prefer the <strong>TestNG framework in Selenium<\/strong>:<\/p>\n<h3>Key Benefits of TestNG<\/h3>\n<ul>\n<li>Easy annotations<\/li>\n<li>Parallel execution support<\/li>\n<li>Dependency management<\/li>\n<li>Data-driven testing<\/li>\n<li>XML-based execution<\/li>\n<li>Detailed HTML reports<\/li>\n<li>Integration with Maven &amp; Jenkins<\/li>\n<\/ul>\n<p>This makes TestNG ideal for <strong>real-time automation projects<\/strong>.<\/p>\n<hr \/>\n<h2>TestNG vs JUnit<\/h2>\n<table>\n<thead>\n<tr>\n<th>Feature<\/th>\n<th>TestNG<\/th>\n<th>JUnit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Parallel execution<\/td>\n<td>\u2705 Yes<\/td>\n<td>\u274c Limited<\/td>\n<\/tr>\n<tr>\n<td>Annotations<\/td>\n<td>Advanced<\/td>\n<td>Basic<\/td>\n<\/tr>\n<tr>\n<td>Test dependency<\/td>\n<td>Yes<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>XML support<\/td>\n<td>Yes<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>Reporting<\/td>\n<td>Strong<\/td>\n<td>Weak<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>That\u2019s why TestNG dominates <strong>enterprise Selenium projects<\/strong>.<\/p>\n<h3>\ud83d\udd39 TestNG vs Modern Alternatives &#8211; 2026 Perspective<\/h3>\n<p><strong>TestNG vs JUnit 5<\/strong><br \/>\nJUnit 5 has improved significantly, but TestNG still offers better parallel execution control and XML-based configuration for large Selenium projects.<\/p>\n<p><strong>Why TestNG Still Dominates Selenium<\/strong><br \/>\nMost existing enterprise automation frameworks are built on TestNG, making it the preferred choice for maintenance, scalability, and CI\/CD integration in 2025.<\/p>\n<hr \/>\n<h2>How to Install TestNG in Eclipse<\/h2>\n<p>One of the most searched topics by biginers is <strong>how to install TestNG in Eclipse<\/strong>.<\/p>\n<h3>Steps to Install TestNG in Eclipse<\/h3>\n<ol>\n<li>Open Eclipse<\/li>\n<li>Go to <strong>Help \u2192 Eclipse Marketplace<\/strong><\/li>\n<li>Search for <strong>TestNG<\/strong><\/li>\n<li>Click <strong>Install<\/strong><\/li>\n<li>Restart Eclipse<\/li>\n<\/ol>\n<p>After installation, you\u2019ll see:<\/p>\n<ul>\n<li><strong>TestNG<\/strong> while creating a new class<\/li>\n<li><strong>Run as \u2192 TestNG Test<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h2>TestNG Maven Dependency<\/h2>\n<p>In real projects, TestNG is added using Maven.<\/p>\n<h3>TestNG Maven Dependency (pom.xml)<\/h3>\n<pre><code class=\"language-xml\" data-line=\"\">&lt;dependency&gt;\n    &lt;groupId&gt;org.testng&lt;\/groupId&gt;\n    &lt;artifactId&gt;testng&lt;\/artifactId&gt;\n    &lt;version&gt;7.9.0&lt;\/version&gt;\n    &lt;scope&gt;test&lt;\/scope&gt;\n&lt;\/dependency&gt;\n<\/code><\/pre>\n<p>Using <strong>TestNG Maven dependency<\/strong> helps:<\/p>\n<ul>\n<li>Manage versions<\/li>\n<li>Integrate with CI\/CD<\/li>\n<li>Avoid manual JAR downloads<\/li>\n<\/ul>\n<hr \/>\n<h2>TestNG Annotations Explained<\/h2>\n<p><strong>TestNG annotations<\/strong> define <strong>when and how a method runs<\/strong>.<\/p>\n<h3>Common TestNG Annotations<\/h3>\n<table>\n<thead>\n<tr>\n<th>Annotation<\/th>\n<th>Purpose<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>@BeforeSuite<\/td>\n<td>Runs before suite<\/td>\n<\/tr>\n<tr>\n<td>@BeforeTest<\/td>\n<td>Runs before test<\/td>\n<\/tr>\n<tr>\n<td>@BeforeClass<\/td>\n<td>Runs before class<\/td>\n<\/tr>\n<tr>\n<td>@BeforeMethod<\/td>\n<td>Runs before each test<\/td>\n<\/tr>\n<tr>\n<td>@Test<\/td>\n<td>Actual test case<\/td>\n<\/tr>\n<tr>\n<td>@AfterMethod<\/td>\n<td>Runs after each test<\/td>\n<\/tr>\n<tr>\n<td>@AfterClass<\/td>\n<td>Runs after class<\/td>\n<\/tr>\n<tr>\n<td>@AfterTest<\/td>\n<td>Runs after test<\/td>\n<\/tr>\n<tr>\n<td>@AfterSuite<\/td>\n<td>Runs after suite<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr \/>\n<h2>TestNG Annotations Order<\/h2>\n<p>Execution order is:<\/p>\n<ol>\n<li>@BeforeSuite<\/li>\n<li>@BeforeTest<\/li>\n<li>@BeforeClass<\/li>\n<li>@BeforeMethod<\/li>\n<li>@Test<\/li>\n<li>@AfterMethod<\/li>\n<li>@AfterClass<\/li>\n<li>@AfterTest<\/li>\n<li>@AfterSuite<\/li>\n<\/ol>\n<p>Interviewers <em>love<\/em> asking this.<\/p>\n<figure id=\"attachment_22038\" aria-describedby=\"caption-attachment-22038\" style=\"width: 1536px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-22038\" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order.webp\" alt=\"TestNG Annotations Order\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order-300x200.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order-1024x683.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order-768x512.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order-440x293.webp 440w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/TestNG-Annotations-Order-680x453.webp 680w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption id=\"caption-attachment-22038\" class=\"wp-caption-text\">TestNG Annotations Order<\/figcaption><\/figure>\n<hr \/>\n<h3>\ud83d\udd39 Common TestNG Mistakes Beginners Make<\/h3>\n<p>Even though TestNG is easy to learn, beginners often make mistakes that affect test stability and scalability.<\/p>\n<p><strong>Mixing JUnit and TestNG<\/strong><br \/>\nUsing JUnit annotations inside TestNG projects leads to confusion and execution issues. A project should follow <strong>one framework consistently<\/strong>.<\/p>\n<p><strong>Not Using TestNG XML<\/strong><br \/>\nMany beginners run tests only from classes. In real projects, execution is controlled using TestNG XML files.<\/p>\n<p><strong>Hardcoding Waits Instead of Using Framework Controls<\/strong><br \/>\nUsing <code class=\"\" data-line=\"\">Thread.sleep()<\/code> instead of proper test setup and execution flow makes tests slow and unreliable.<\/p>\n<p><strong>Ignoring Test Dependencies<\/strong><br \/>\nNot using <code class=\"\" data-line=\"\">dependsOnMethods<\/code> leads to false failures when prerequisite tests fail.<\/p>\n<p>Avoiding these mistakes makes your TestNG framework production-ready.<\/p>\n<hr \/>\n<h2>Sample TestNG Program<\/h2>\n<pre><code class=\"language-java\" data-line=\"\">import org.testng.annotations.Test;\n\npublic class LoginTest {\n\n    @Test\n    public void loginTest() {\n        System.out.println(&quot;Login test executed&quot;);\n    }\n}\n<\/code><\/pre>\n<p>Run \u2192 <strong>Run as TestNG Test<\/strong><\/p>\n<p>That\u2019s your first TestNG automation test \ud83c\udf89<\/p>\n<hr \/>\n<h2>TestNG Framework in Selenium<\/h2>\n<p>A typical <strong>TestNG framework<\/strong> includes:<\/p>\n<ul>\n<li>Test classes<\/li>\n<li>Page Object classes<\/li>\n<li>Utility classes<\/li>\n<li>TestNG XML<\/li>\n<li>Maven configuration<\/li>\n<\/ul>\n<p>This structure is what companies expect from <strong>mid-level automation testers<\/strong>.<\/p>\n<hr \/>\n<h2>TestNG XML File Explained<\/h2>\n<p>The XML file controls <strong>which tests run and how<\/strong>.<\/p>\n<pre><code class=\"language-xml\" data-line=\"\">&lt;suite name=&quot;TestSuite&quot;&gt;\n    &lt;test name=&quot;LoginTests&quot;&gt;\n        &lt;classes&gt;\n            &lt;class name=&quot;tests.LoginTest&quot;\/&gt;\n        &lt;\/classes&gt;\n    &lt;\/test&gt;\n&lt;\/suite&gt;\n<\/code><\/pre>\n<p>Using XML you can:<\/p>\n<ul>\n<li>Group tests<\/li>\n<li>Run selectively<\/li>\n<li>Control execution order<\/li>\n<\/ul>\n<hr \/>\n<h2>TestNG Dependency (DependsOnMethods)<\/h2>\n<p><strong>TestNG dependency<\/strong> allows one test to depend on another.<\/p>\n<pre><code class=\"language-java\" data-line=\"\">@Test\npublic void login() {\n    System.out.println(&quot;Login&quot;);\n}\n\n@Test(dependsOnMethods = &quot;login&quot;)\npublic void dashboard() {\n    System.out.println(&quot;Dashboard&quot;);\n}\n<\/code><\/pre>\n<p>If <code class=\"\" data-line=\"\">login<\/code> fails, <code class=\"\" data-line=\"\">dashboard<\/code> won\u2019t run.<\/p>\n<hr \/>\n<h2>DataProvider in TestNG (Data-Driven Testing)<\/h2>\n<p><strong>DataProvider in TestNG<\/strong> is used to run a test multiple times with different data.<\/p>\n<pre><code class=\"language-java\" data-line=\"\">@DataProvider\npublic Object[][] loginData() {\n    return new Object[][] {\n        {&quot;user1&quot;, &quot;pass1&quot;},\n        {&quot;user2&quot;, &quot;pass2&quot;}\n    };\n}\n\n@Test(dataProvider = &quot;loginData&quot;)\npublic void loginTest(String user, String pass) {\n    System.out.println(user + &quot; &quot; + pass);\n}\n<\/code><\/pre>\n<p>This covers:<\/p>\n<ul>\n<li><strong>data provider in TestNG<\/strong><\/li>\n<li><strong>dataprovider in TestNG<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h2>Parallel Execution in TestNG<\/h2>\n<p>One of the biggest advantages is <strong>parallel execution in TestNG<\/strong>.<\/p>\n<pre><code class=\"language-xml\" data-line=\"\">&lt;suite name=&quot;ParallelSuite&quot; parallel=&quot;methods&quot; thread-count=&quot;2&quot;&gt;\n<\/code><\/pre>\n<p>This:<\/p>\n<ul>\n<li>Reduces execution time<\/li>\n<li>Is heavily used in CI\/CD pipelines<\/li>\n<\/ul>\n<hr \/>\n<h2>Listeners in TestNG<\/h2>\n<p><strong>TestNG listeners<\/strong> help you:<\/p>\n<ul>\n<li>Capture screenshots<\/li>\n<li>Track test status<\/li>\n<li>Customize reports<\/li>\n<\/ul>\n<p>Common listeners:<\/p>\n<ul>\n<li>ITestListener<\/li>\n<li>ISuiteListener<\/li>\n<\/ul>\n<p>This covers:<\/p>\n<ul>\n<li><strong>listeners in TestNG<\/strong><\/li>\n<li><strong>TestNG listeners<\/strong><\/li>\n<\/ul>\n<hr \/>\n<h2>How to Run Failed Test Cases in TestNG<\/h2>\n<p>After execution, TestNG generates:<\/p>\n<ul>\n<li><code class=\"\" data-line=\"\">testng-failed.xml<\/code><\/li>\n<\/ul>\n<p>Simply run that file to <strong>re-execute only failed tests<\/strong>.<\/p>\n<p>This is extremely useful in real projects.<\/p>\n<hr \/>\n<h2>What TestNG Is Used for Today<\/h2>\n<p>Fast forward to today, and TestNG is no longer \u201cjust another testing framework\u201d.<\/p>\n<p>It is the <strong>standard test execution framework for Selenium automation<\/strong>, widely used in:<\/p>\n<ul>\n<li>Enterprise-level test automation projects<\/li>\n<li>Large regression and smoke test suites<\/li>\n<li>CI\/CD pipelines with Maven and Jenkins<\/li>\n<\/ul>\n<p>In short, TestNG became popular because <strong>automation needed structure<\/strong>, and it remains relevant because <strong>test suites keep growing in size and complexity<\/strong>.<\/p>\n<figure id=\"attachment_22040\" aria-describedby=\"caption-attachment-22040\" style=\"width: 1536px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-22040\" src=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today.webp\" alt=\"What TestNG Is Used for Today\" width=\"1536\" height=\"1024\" srcset=\"https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today.webp 1536w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today-300x200.webp 300w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today-1024x683.webp 1024w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today-768x512.webp 768w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today-440x293.webp 440w, https:\/\/www.kaashivinfotech.com\/blog\/wp-content\/uploads\/2025\/12\/What-TestNG-Is-Used-for-Today-680x453.webp 680w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><figcaption id=\"caption-attachment-22040\" class=\"wp-caption-text\">What TestNG Is Used for Today<\/figcaption><\/figure>\n<hr \/>\n<h2>TestNG Interview Questions (Freshers + Mid-Level)<\/h2>\n<h3>1. What is TestNG?<\/h3>\n<p>A testing framework used with Selenium for managing test execution.<\/p>\n<h3>2. What is TestNG in Selenium?<\/h3>\n<p>It controls Selenium test flow, parallel execution, and reporting.<\/p>\n<h3>3. What are TestNG annotations?<\/h3>\n<p>Annotations define test execution order.<\/p>\n<h3>4. What is DataProvider?<\/h3>\n<p>Used for data-driven testing.<\/p>\n<h3>5. How to run tests in parallel?<\/h3>\n<p>Using TestNG XML configuration.<\/p>\n<hr \/>\n<h2>Why You Should Learn TestNG in 2025<\/h2>\n<p>If you\u2019re:<\/p>\n<ul>\n<li>A <strong>manual tester moving to automation<\/strong><\/li>\n<li>A <strong>fresher learning Selenium<\/strong><\/li>\n<li>A <strong>tester aiming for mid-level roles<\/strong><\/li>\n<\/ul>\n<p>Then <strong>TestNG tutorial knowledge is non-negotiable<\/strong>.<\/p>\n<p>Almost every automation job expects:<\/p>\n<ul>\n<li>TestNG framework<\/li>\n<li>Maven integration<\/li>\n<li>XML handling<\/li>\n<li>Parallel execution<\/li>\n<\/ul>\n<hr \/>\n<h2>Final Thoughts<\/h2>\n<p>TestNG is not just a framework \u2014 it\u2019s the <strong>foundation of Selenium automation<\/strong>.<\/p>\n<p>If you truly understand:<\/p>\n<ul>\n<li><strong>what is TestNG<\/strong><\/li>\n<li><strong>TestNG in Selenium<\/strong><\/li>\n<li><strong>TestNG annotations<\/strong><\/li>\n<li><strong>TestNG framework<\/strong><\/li>\n<\/ul>\n<p>You\u2019re already ahead of many testers in the job market.<\/p>\n<hr \/>\n<h2>\ud83d\udd17 Related Reads<\/h2>\n<ul>\n<li><strong><a href=\"https:\/\/www.kaashivinfotech.com\/blog\/testing-framework-for-e-commerce\/\">7 Smart Steps to Build a Testing Framework for E-Commerce Checkout and Payments<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.kaashivinfotech.com\/blog\/manual-vs-automation-testing-comparison-2025\/\">Manual vs Automation Testing (2025): 7 Real-Life Lessons to Choose the Right One for Your Software Project \ud83d\ude80<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.kaashivinfotech.com\/blog\/developer-vs-tester-in-2025\/\">Developer vs Tester in 2025 \u2013 Skills, Roles, Career Trends, and Challenges \ud83d\ude80<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.wikitechy.com\/tutorial\/software-testing\/what-is-software-testing\" target=\"_blank\" rel=\"noopener\">What Is Software Testing? \u2013 Software for Testing Explained<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.wikitechy.com\/software-testing-process-guide\/\" target=\"_blank\" rel=\"noopener\">Software Testing Process: A Complete Guide to Ensuring Quality<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/www.wikitechy.com\/types-of-software-testing\/\" target=\"_blank\" rel=\"noopener\">15 Powerful Types of Software Testing You Must Know \ud83d\udcbb\ud83d\udee0\ufe0f<\/a><\/strong><\/li>\n<\/ul>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you\u2019re a manual tester planning to move into automation or a fresher learning Selenium, you\u2019ll hear one word again and again \u2014 TestNG. But what exactly is TestNG? Why is it so popular in Selenium automation? And why do almost all real-time automation frameworks use TestNG framework? Let\u2019s break it down step by step [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":22041,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3482,3702],"tags":[11253,11249,11244,11252,11246,11256,11240,11241,11243,11251,11254,682,11248,11239,11245,11250,11247,11255,11242,11238],"class_list":["post-22030","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software-testing","category-what-is","tag-ci-cd-selenium-testng","tag-maven-testng","tag-parallel-execution-testng","tag-selenium-automation-framework","tag-selenium-automation-testing","tag-selenium-testing-2025","tag-selenium-testng","tag-testng-annotations","tag-testng-dataprovider","tag-testng-dependsonmethods","tag-testng-for-beginners","tag-testng-framework","tag-testng-framework-in-selenium","tag-testng-in-selenium","tag-testng-interview-questions","tag-testng-listeners","tag-testng-tutorial","tag-testng-vs-junit","tag-testng-xml","tag-what-is-testng"],"_links":{"self":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/posts\/22030","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/comments?post=22030"}],"version-history":[{"count":0,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/posts\/22030\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/media\/22041"}],"wp:attachment":[{"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/media?parent=22030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/categories?post=22030"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kaashivinfotech.com\/blog\/wp-json\/wp\/v2\/tags?post=22030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}