Скачать или смотреть TestNG From Chaos to Control & How It’s Used in Java + Selenium Frameworks

Table of Contents:

What is TestNG?

Key Features of TestNG

Core Annotations & Test Lifecycle

Integration with Selenium WebDriver + Java

Basic Framework Usage with TestNG

Why This Matters for Testers & Automation Engineers

1. What is TestNG?
‑ TestNG is a testing framework for Java, designed to cover various types of tests (unit, functional, end‑to‑end) and provide advanced features like data‑driven testing, parallel execution and flexible configuration.
‑ It is often paired with Selenium for web automation to manage test execution, reporting, parameterization and suites.

2. Key Features of TestNG
‑ Annotation‑based setup: simple to declare test methods and lifecycle methods.
‑ Configuration via XML suites (e.g., testng.xml) to define groups, test order, parallel runs.
‑ Data‑driven testing support via @DataProvider and parameter annotations.
‑ Support for test grouping, test dependencies, invocation counts, skipping tests.
‑ Built‑in HTML/XML reporting of test results.
‑ Integration with build tools (Maven, Gradle), CI/CD (Jenkins) and Selenium.

3. Core Annotations & Test Lifecycle
‑ @BeforeSuite / @AfterSuite: Run once before/after all tests in suite.
‑ @BeforeTest / @AfterTest: Run before/after all tests in test tag in suite.
‑ @BeforeClass / @AfterClass: Run once before/after all test methods in one class.
‑ @BeforeMethod / @AfterMethod: Run before/after each @Test method.
‑ @Test: Marks a test method. You can specify priority, groups, dataProvider.
‑ Additional: @DataProvider (for supplying test data), @Parameters (from XML), @Listeners, @Factory (for dynamic tests).

4. Integration with Selenium + Java
‑ In a Selenium‑automation project you might:

Use @BeforeSuite/@BeforeClass to set up WebDriver, read configs, open browser.

Use @Test methods to perform browser actions: navigate, click, assert UI behaviour.

Use @AfterMethod to capture screenshots on failure, clean up browser state.

Use @AfterSuite to close browser, generate report, send summary.
‑ By using TestNG you get control over test execution, parameterization (e.g., same test with multiple browsers or data sets) and reporting out‑of‑the‑box.

5. Basic Framework Usage with TestNG
‑ Step 1: Add TestNG dependency in your Maven/Gradle project.
‑ Step 2: Annotate your test class methods with TestNG annotations.
‑ Step 3: Create a testng.xml file to define which classes/tests to run, specify groups, parallel mode.
‑ Step 4: In your Selenium test code use WebDriver inside TestNG‑annotated methods.
‑ Step 5: Run via IDE, Maven command (mvn test) or CI job. Results will show test counts, passes/fails, groups, etc.
‑ Step 6: Use groups/data providers to run multiple scenarios, or use listeners/reporters for advanced logging.

6. Why This Matters for Testers & Automation Engineers
‑ TestNG enables structured, scalable automation frameworks instead of simple scripts.
‑ For testers using Selenium + Java, knowing TestNG means you can handle multiple tests, data sets, browsers and CI pipelines.
‑ Good framework setup reduces maintenance, improves clarity of test execution, and gives better insight via reports.
‑ In modern automation projects, you’ll often be working with TestNG‑based frameworks; mastering it boosts your automation skill‑set and career readiness.

Hashtags:
#TestNG, #SeleniumJava, #TestAutomation, #AutomationQA, #JavaForTesters, #FrameworkDesign, #DataDrivenTesting, #ParallelTesting, #AutomationFramework, #QA2026, #TestingCareer, #WebDriver, #TestNGAnnotations, #CleanCode, #CI_CD, #BuildTools, #ScalableAutomation, #QualityAssurance, #TestNGIntegration, #JavaAutomation