Selenium Webdriver TestNG (Java) using While loop for all tests

Question

I am new to Selenium Webdriver Testng and trying to Develop Data Driven framework using CSVReader

I have 5 tests in Testng and have to run those all on different environments. So basically I have to pick a different url and client, but other pages, elements remain same.

My Question is, Where do I put while loop so that it reads first line and execute all the tests and then read second line and so on.

I tried initialize CSV reader at class level, before suite, before method etc. but it throws error, it works for a particular test if I am putting inside @Test but that doesn't resolve the purpose, I couldn't find any relevant answer on the internet.

Below is the high level code:

public class Portal1 {
    WebDriver driver;
    @BeforeSuite
    public void beforeMethod() {
    }
    @BeforeTest
    public void SetUp() {
    config = new Configreader();

    }
@DataProvider(name = "TestData") 
public Object [][] getData() { Object [][] 
data=new Object[2][2]; 
data[0][0]="url1"; 
data[0][1]="client1"; 
data[1][0]="url2"; 
data[1][1]="client2"; 
return data; 
} 

@Test(dataProvider = "TestData",priority =0) 
public void RI_Select_an_Employer_page(String url,String client) throws Exception { 
driver.get(url); 
} 
@Test(dataProvider = "TestData",priority =1) 
    public void RI_Employer_Information_page(String url,String client) {
    WebElement  linkclient = driver.findElement(By.linkText(client));
    linkclient.click();
  @AfterMethod
          public void tearDown(ITestResult result) {
        }
  @AfterSuite
  public void tearDown() {
  driver.quit();
  }

Answer 1

You shouldn't use while loops to provide test data to your tests if you use some dedicated test frameworks like TestNg.

Instead you should use the mechanisms provided by such frameworks. For TestNg you can provide test data either through xml file or though a special method providing test data for each run.

Details: http://testng.org/doc/documentation-main.html#parameters

For example if you would like your tests are fed with test data from excel, then you should implement code like this (a bit changed code from the documentation example):

@DataProvider(name = "test1")
public Object[][] createData1() {

    int n = 0; // Load the number of the excel file rows later here
    int k = 0; // Load the number of parameter later here

    // Read your excel file. Assign the corresponding values to n and k

    Object[][] testData = new Object[n][k];

    // Fill testData with values from excel

    return testData;

}

Then you just describe your test methods in the following way:

@Test(dataProvider = "test1")
public void verifyData1(Object[] params) {
    // Here you use params[0], params[1], .. to take 
    // new set of parameters for each new run of your test.
    // testNg will automatically run your single test for
    // one time for EACH test data entry
}

I would also recommend to read carefully TestNg documentation to learn what are the other interesting things you can use to make your tests more effective.

UPD: I have tested the code from your question and it works fine for me:

Answer 2

You can do it in a simple way. Read the data from CSV and store it in data provider and after that and while writing test pass it as parameter. Below is just an example .

 @Test(dataProvider = "TestData",priority =1) 
       public void RI_Employer_Information_page(String url,String client) {
       driver.get(url);
       WebElement  linkclient = driver.findElement(By.linkText(client));
       linkclient.click();
       }

it will run for all the different 'url' and client.