TestNG Annotations Explained with Examples
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TestNG Annotations Explained with Examples
TestNG is a popular testing framework for Java that simplifies writing and managing automated tests. Annotations in TestNG control the flow of test execution, making it more organized and efficient.
Common TestNG Annotations:
@BeforeSuite / @AfterSuite – Run once before/after all tests in the suite.
@BeforeSuite
public void setupSuite() { System.out.println("Before Suite"); }
@BeforeTest / @AfterTest – Execute before/after <test> tags in the XML.
@BeforeClass / @AfterClass – Run before/after the first and last method in a class.
@BeforeMethod / @AfterMethod – Execute before/after each test method.
@BeforeMethod
public void login() { System.out.println("Login before each test"); }
@Test – Marks a method as a test case. You can set priority, groups, or dependsOnMethods.
@Test(priority=1)
public void verifyTitle() { System.out.println("Verifying title"); }
Example Execution Flow:
@BeforeSuite → @BeforeTest → @BeforeClass → @BeforeMethod → @Test → @AfterMethod → @AfterClass → @AfterTest → @AfterSuite
Conclusion:
TestNG annotations provide fine control over test execution, making tests cleaner, reusable, and easier to maintain. Mastering these ensures efficient automation frameworks.
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