@BeforeTest is one of the TestNG Annotations. As the name defines, @BeforeTest is executed before the execution of all the @test annotated methods inside a TestNG Suite. This annotation allows developers to specify various actions to be taken before the execution of all the @test annotated methods inside a TestNG Suite.

Let’s understand the @BeforeTest annotation through an example.

Step 1: In the Maven project, create a TestNG Class that contains @BeforeTest.

Before_Test1.Java

Java

package com.geeksforgeeks.test;

import org.testng.annotations.Test;
import org.testng.annotations.BeforeTest;

public class Before_Test1 {
  
  @BeforeTest
  public void beforeTest() {
      System.out.println("This method will be executed before the execution of all @Test annotated methods");
  }
 
  @Test
  public void test1() {
      System.out.println("Test1 Executed");
  }

  @Test
  public void test2() {
      System.out.println("Test2 Executed");
  }

}

Now, let’s explain what this code does:

Package Declaration: Before_Test1 Class is on the com.geeksforgeeks.test package.
Imports: Before_Test1 Class imports annotations and classes from the TestNG framework (org.testng.annotations.BeforeMethod and org.testng.annotations.Test).
Before_Test1 Class: This is the main test class. It contains test methods and beforeTest method.

beforeTest (@BeforeTest):

This method is annotated with @BeforeTest, indicating that it should be executed before test execution this suite contains many classes.
It prints this "This method will be executed before the execution of all @Test annotated methods" statement.

Test Methods (@Test):

Each test method is annotated with @Test, indicating that it is a test case.
There are two test methods: test1() and test2().
Each test method prints their respective statement.

After performing the operation, the result is printed to the console.

Step 2: Now, we create the AnnotationsTest.xml file to configure the Before_Test1 Class.

XML

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd">
<suite name="suite">
    <test name="test1">
        <classes>
               <class name="com.geeksforgeeks.test.Before_Test1" /> 
                
        </classes>
    </test>
</suite>

Step 3: Run the AnnotationsTest.xml. Right click on the AnnotationsTest.xml file, move the cursor down to Run As and then click on the TestNG Suite.

TestNG Annotations - @BeforeTest

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