DataProvider Annotation in TestNG

here are many functions provided by TestNG and you can use them in different ways one of them I will mention in this blog.

@DataProvider

A DataProvider provide data to the function which depends on it. And whenever we define a DataProvider it should always return a double object array “Object[][]”. The function which calls dataprovider will be executed based on no. of array returned from the DataProvider.

The DataProvider can be used for getting data from some file or database according to test requirements

 

 

public class ParameterizedLoginTest {

 

@Test(dataProvider = "parameterIntTestProvider")

 public void parameterIntTest(String UserName, String Password){

 System.out.println("UserName " + UserName);

 System.out.println("Password " + Password);

 }

 

 //This function will provide the parameter data

 // Selenium framework - read the data from xls file  

//and put it in Object array

 // rows - number of time test has to be repeated

 // cols - number of parameters in test data

 @DataProvider(name = "Data-Provider-Function")

 public Object[][] parameterIntTestProvider() {

 

 Object[][] data = new Object[3][2];

 

 data[0][0] = "UserName1";

 data[0][1] = "UserName1@123";

 

 data[1][0] = "UserName2";

 data[1][1] = "UserName2@123";

 

 data[2][0] = "UserName2";

 data[2][1] = "UserName2@123";

 

 return data;

 }

}