PAGE 4: PARAMETERIZATION USING TestNG.XML

PARAMETERIZATION IN TestNG: TestNG allows the user to pass values to test methods as arguments by using parameter annotations through testng.xml file.

Some times it may be required for us to pass values to test methods during run time. Like we can pass user name and password through testng.xml instead of hard coding it in testmethods. or we can pass browser name as parameter to execute in specific browser.

Let us now try to understand parameterization with a basic example.

package com.parameterization;

import org.testng.annotations.Parameters;

import org.testng.annotations.Test;

public class TestParameters {

               @Parameters({ "browser" })

               @Test

               public void testCaseOne(String browser) {

                               System.out.println("browser passed as :- " + browser);

               }

               @Parameters({ "username", "password" })

               @Test

               public void testCaseTwo(String username, String password) {

                               System.out.println("Parameter for User Name passed as :- " + username);

                               System.out.println("Parameter for Password passed as :- " + password);

               }

}

In the above class, for Test Method 'testCaseOne', we are passing two parameters 'username' and 'password' as input to test method.

The below is the testng.xml file, in which we need to pass the parameter values for the test method

The below is the testng.xml file, in which we need to pass the parameter values for the test method

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">

<suite name="Parameterization Test Suite">

               <test name="Testing Parameterization">

               <parameter name="browser" value="Firefox"/>

               <parameter name="username" value="testuser"/>

               <parameter name="password" value="testpassword"/>

                               <classes>

                                              <class name="com.parameterization.TestParameters" />

                               </classes>

               </test>

</suite>

In the above testng.xml file, we have two attributes for parameter tag, the name attribute which defines name of the parameter, and the value attribute defines the value of the parameter.