how to resolve methodmatcher exception in data driven testing using TestNG?

Question

package testNG;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.openqa.selenium.By;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.Assert;
import org.testng.ITestResult;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;

public class Datadriven_testing_in_testNG
{
    public WebDriver driver;
@DataProvider(name="testData")
public  Object[][] readExcel() throws BiffException, IOException 
{

    File f=new File("C:\\Users\\Akshay\\Desktop\\SELENIUM\\Amazon.xls");
    Workbook readwb=Workbook.getWorkbook(f);
    Sheet readsht=readwb.getSheet(0);
    int noofrows=readsht.getRows();
    int noofcolumns=readsht.getColumns();
    String inputData[][]= new String[noofrows-1][noofcolumns];
    int count=0;
    for(int i=1;i<noofrows;i++)
    {
        for(int j=0;j<noofcolumns;j++)
        {
            Cell c=readsht.getCell(j,i);
            inputData[count][j]=c.getContents();
        }
        count++;

    }
    return inputData;


}
@Test(dataProvider="testData")
public static void  login(String uname, String password) throws InterruptedException
{



    //launch chrome
    System.setProperty("webdriver.chrome.driver","C:\\Users\\Akshay\\Desktop\\SELENIUM\\chromedriver.exe");
    WebDriver driver= new ChromeDriver();
    // navigate to url
    driver.get("https://www.amazon.in/");
    //click on sign in
    driver.findElement(By.xpath("(//span[text()='Sign in'])[3]")).click();
    Thread.sleep(5000);
    // to enter user name
    driver.findElement(By.xpath("//input[@name='email']")).sendKeys(uname);
    Thread.sleep(5000);
    //to click continue
    driver.findElement(By.xpath("//input[@id='ap_email']/following::*[9]")).click();
    Thread.sleep(5000);
    //to enter password
    driver.findElement(By.xpath("//input[@id='ap_password']")).sendKeys(password);
    Thread.sleep(5000);
    //to click login button
    driver.findElement(By.xpath("//input[@id='ap_password']/following::*[6]")).click();

   //verification
    String actual=driver.getCurrentUrl();
    String expected="https://www.amazon.in/ap/cvf/request?arb=19308965-aa56-4383-b19a-acc78826528b";
    Assert.assertEquals(actual, expected);
}
@AfterMethod
public void getResult(ITestResult testResult)
{
    System.out.println("Testcase name "+testResult.getName());
    System.out.println("Testcase Result "+testResult.getStatus());
    int status=testResult.getStatus();
    if(status==1){
        driver.close();
    }
    else{
        //take screenshot
        File outfile=((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
        try {
            FileUtils.copyFile(outfile, new File("C:\\Users\\Akshay\\Desktop\\SELENIUM"+testResult.getParameters()[0]+"Defect.jpg"));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    driver.close();
    }

    }

This is the code I have written, but it's showing dataProvider mismatch error. I tried to search for solution but couldn't get it Error message in console is as below:

FAILED: login org.testng.internal.reflect.MethodMatcherException: Data provider mismatch Method: login([Parameter{index=0, type=java.lang.String, declaredAnnotations=[]}, Parameter{index=1, type=java.lang.String, declaredAnnotations=[]}]) Arguments: [(java.lang.String)[email protected],(java.lang.String)GSaA2509,(java.lang.String)] at org.testng.internal.reflect.DataProviderMethodMatcher.getConformingArguments(DataProviderMethodMatcher.java:52) at org.testng.internal.Invoker.injectParameters(Invoker.java:1278) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1171) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112) at org.testng.TestRunner.privateRun(TestRunner.java:756) at org.testng.TestRunner.run(TestRunner.java:610) at org.testng.SuiteRunner.runTest(SuiteRunner.java:387) at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:382) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:340) at org.testng.SuiteRunner.run(SuiteRunner.java:289) at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) at org.testng.TestNG.runSuitesSequentially(TestNG.java:1293) at org.testng.TestNG.runSuitesLocally(TestNG.java:1218) at org.testng.TestNG.runSuites(TestNG.java:1133) at org.testng.TestNG.run(TestNG.java:1104) at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132) at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236) at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)

UnknownBeast UnknownBeast · Accepted Answer · 2020-06-15T20:54:43

Instead of String uname and string password in test parameters, use Object uname and Object password and after that you can convert that Object to string.

how to resolve methodmatcher exception in data driven testing using TestNG?

1 Answers