TestNG Data Provider

When you need to pass complex parameters for example created from Java (complex objects, objects read from a property file or a database, etc…), in such cases parameters can be passed using Dataproviders. A Data Provider is a method annotated with @DataProvider. A Data Provider returns an array of objects.

Let us check out the same Search examples using Dataproviders.

Video Tutorial -

 

How to do it ?

1)  Define the method searchValue() which is defined as a Dataprovider using the annotation. This method returns array of object array.

2) Add a method test() to your DataProviderTest class. This method takes two strings as input parameters.

3) Add the annotation @Test(dataProvider = “search”) to this method. The attribute dataProvider is mapped to “search”.

4) Run the below code as testNG test case then the test will execute two times as we are passing two Data Values.

package test;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
 
import org.testng.annotations.DataProvider;
 
import org.testng.annotations.Test;
 
public class TestNGDataProvider {
 
 private static WebDriver driver;
 
  @DataProvider(name = "search")
 
  public static Object[][] searchValue() {
 
        return new Object[][] { { "appium" }, { "selenium" }};
 
  }
 
  // Here we are calling the Data Provider object with its Name
 
  @Test(dataProvider = "search")
 
  public void test(String searchtext) throws Exception {
 
   System.setProperty("webdriver.chrome.driver", "C:\\Softwares\\chromedriver_win32\\chromedriver.exe");
  
   driver=new ChromeDriver();
      
      driver.get("http://www.qaautomated.com");
 
      Thread.sleep(5000);
      driver.findElement(By.xpath("*//input[@class='search-field']")).sendKeys(searchtext);
      
      driver.findElement(By.xpath("*//input[@class='search-submit']")).click();
 
      driver.quit();
  }
 
}

TestNG Parameters

As we all know the value of Parameterization in automation testing. It allows us to automatically run a test case multiple times with various inputs and validation values. while creating a automation framework we need to put in some effort to support data driven testing in our automated tests. In this video we will see how we can parameterize a test case using TestNG parameters.

TestNG provides us interesting feature called TestNG Parameters. TestNG lets you pass parameters directly to your test methods with your testng.xml.

Video Tutorial -

How to do it?

Let me take a very simple example of Search on our site www.qaautomated.com, where the search text  is required to perform authentication.

1) Create a test case to perform Search which takes the one string argument as searchtext.

2) Provide searchtext as parameter using TestNG Annotation.

package test;


import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.Test;
import org.testng.annotations.Parameters;
 
public class TestNGParameters{
 
 private static WebDriver driver;
 
  @Parameters("searchtext")
  @Test  
  public void test(String searchtext) throws InterruptedException {
 
   System.setProperty("webdriver.chrome.driver", "C:\\Softwares\\chromedriver_win32\\chromedriver.exe");
  
   driver=new ChromeDriver();
      
      driver.get("http://www.qaautomated.com");
 
      Thread.sleep(5000);
      driver.findElement(By.xpath("*//input[@class='search-field']")).sendKeys(searchtext);
      
      driver.findElement(By.xpath("*//input[@class='search-submit']")).click();
 
      driver.quit();
 
  }
 
}

3) Provide Search text value in testng.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Suite">
  <test thread-count="5" name="Test">
   <parameter name="searchtext" value="appium"/>
    <classes>
      <class name="test.TestNGParameters"/>
    </classes>
  </test> <!-- Test -->
</suite> <!-- Suite -->

4) Right click on testng.xml and run as TestNG Suit