Java – test the browser at the same time; Received error

Now, I'm trying my first test, which will test browsers chrome, Firefox, ie and safari at the same time But I got the following error:

I am using selenium, TestNG, Maven and Java XML test suite files and java files are located in the same folder in the directory I can find the content of the test suite XML file online as follows (set the class name value to the correct package and class name):

<?xml version="1.0" encoding="UTF-8"?>
<DOCTYPE suite SYstem "http://testng.org/testng-1.0.dtd">
<suite name="TestSuite" thread-count="2" parallel="tests">
 <test name="ChromeTest">
  <parameter name="browser" value="chrome" />
    <classes>
        <class name="com.sqa.ts.multiBrowser.BrowserTest">
        </class>
    </classes>
 </test>
 <test name="FirefoxTest">
    <parameter name="browser" value="firefox" />
    <classes>
        <class name="com.sqa.ts.multiBrowser.BrowserTest">
        </class>
    </classes>  
 </test>
 <test name="IETest">
    <parameter name="browser" value="ie" />
     <classes>
        <class name="com.sqa.ts.multiBrowser.BrowserTest">
        </class>
     </classes>
 </test>
 <test name="SafariTest">
    <parameter name="browser" value="safari" />
    <classes>
        <class name="com.sqa.ts.multiBrowser.BrowserTest">
        </class>
    </classes>
 </test>
</suite>

Here's my code. Just open the browser to make sure it will run and pass:

package com.sqa.ts.multiBrowser;

import java.net.MalformedURLException;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.ie.InternetExplorerDriver;
import org.openqa.selenium.safari.SafariDriver;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test;

public class BrowserTest {

  private WebDriver driver;

  @Test
  public void testCaSEOne() {
    driver.get("http://www.google.com");
    driver.close();
  } 

  @BeforeMethod
  @Parameters("browser")
  public void beforeMethod(String browser) throws MalformedURLException {
    if (browser.equalsIgnoreCase("chrome")) {
        System.setProperty("webdriver.chrome.driver","C:/Users/Trevor/workspace/BrowserTest/drivers/chromedriver.exe");
        driver = new ChromeDriver();

    } else if (browser.equalsIgnoreCase("firefox")) {
        driver = new FirefoxDriver();

    } else if (browser.equalsIgnoreCase("ie")) {
        System.setProperty("webdriver.ie.driver","C:/Users/Trevor/workspace/BrowserTest/drivers/IEDriverServer.exe");
        driver = new InternetExplorerDriver();

    } else if (browser.equalsIgnoreCase("safari")) {
        driver = new SafariDriver();
    }
}

  @AfterMethod
  public void afterMethod() {
    driver.quit();
  }

}

I would appreciate it if someone could let me know the cause of this problem thank you.

Solution

Looks like you lack POM TestNG configuration in XML

<build>
    <plugins>
        <!-- Following plugin executes the testng tests -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.19</version>
            <configuration>
                <!-- Suite testng xml file to consider for test execution -->
                <suiteXmlFiles>
                    <suiteXmlFile>src/test/java/com/sqa/ts/multiBrowser/testng.xml</suiteXmlFile>
                </suiteXmlFiles>
            </configuration>
        </plugin>
</build>

Running MVN clean install or MVN clean install should run test cases I hope it will help you