Hierarchy In TestNG Annotations
The full hierarchy of TestNG annotations—from suite-level to method-level:
1. @BeforeSuite / @AfterSuite – once before/after the entire suite
2. @BeforeTest / @AfterTest – before/after each <test> in your XML
3. @BeforeClass / @AfterClass – once before/after all methods in the class
4. @BeforeMethod / @AfterMethod – before/after each individual @Test method
Run it via the included testng.xml snippet to see the execution order printed in the console.
package com.example.tests;
import org.testng.annotations.*;
/**
* Demonstrates the hierarchy and execution order of TestNG annotations.
*/
public class AnnotationHierarchyExample {
@BeforeSuite
public void beforeSuite() {
System.out.println("[BeforeSuite] - runs once before all tests in the suite");
}
@BeforeTest
public void beforeTest() {
System.out.println("[BeforeTest] - runs before any @Test belonging to <test> tag");
}
@BeforeClass
public void beforeClass() {
System.out.println("[BeforeClass] - runs once before the first method in the current class");
}
@BeforeMethod
public void beforeMethod() {
System.out.println("[BeforeMethod] - runs before each @Test method");
}
@Test
public void testA() {
System.out.println("[Test] - testA execution");
}
@Test
public void testB() {
System.out.println("[Test] - testB execution");
}
@AfterMethod
public void afterMethod() {
System.out.println("[AfterMethod] - runs after each @Test method");
}
@AfterClass
public void afterClass() {
System.out.println("[AfterClass] - runs once after all methods in the current class");
}
@AfterTest
public void afterTest() {
System.out.println("[AfterTest] - runs after all @Test methods belonging to <test> tag");
}
@AfterSuite
public void afterSuite() {
System.out.println("[AfterSuite] - runs once after all tests in the suite");
}
/*
Optional: annotation for group-level demonstration
@BeforeGroups("regression")
public void beforeGroups() {
System.out.println("[BeforeGroups] - runs before first test in 'regression' group");
}
@AfterGroups("regression")
public void afterGroups() {
System.out.println("[AfterGroups] - runs after last test in 'regression' group");
}
@Test(groups = "regression")
public void regressionTest() {
System.out.println("[Test group=regression] - regressionTest execution");
}
*/
}
/*Sample testng.xml to execute this class:
<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd">
<suite name="AnnotationHierarchySuite">
<test name="HierarchyTest">
<classes>
<class name="com.example.tests.AnnotationHierarchyExample"/>
</classes>
</test>
</suite>
*/Execution Result
[BeforeSuite] - runs once before all tests in the suite
[BeforeTest] - runs before any @Test belonging to <test> tag
[BeforeClass] - runs once before the first method in the current class
[BeforeMethod] - runs before each @Test method
[Test] - testA execution
[AfterMethod] - runs after each @Test method
[BeforeMethod] - runs before each @Test method
[Test] - testB execution
[AfterMethod] - runs after each @Test method
[AfterClass] - runs once after all methods in the current class
[AfterTest] - runs after all @Test methods belonging to <test> tag
[AfterSuite] - runs once after all tests in the suite
