selenium+junit4实现参数化自动化测试

package com.m1905.junit;

import java.util.Arrays;
import java.util.Collection;

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebDriver.Navigation;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

@RunWith(Parameterized.class)
public class LoginParameterTest {
    private static WebDriver driver;
    private static Navigation navigate;
    private static String url="http://www.1905.com";
    
    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
        driver = new FirefoxDriver();
        navigate = driver.navigate();
        navigate.to(url);
        driver.manage().window().maximize();
    }
    private String username;
    private String password;
    public LoginParameterTest(String username,String password){
        this.username = username;
        this.password = password;
    }
    @Parameters
    public static Collection<Object[]> prepareData(){
        Object[][] object = {{"user1","pwd1"},{"user2","pwd2"}};
        return Arrays.asList(object);
    }
    @Test
    public void testLogin() {
        try {
            Thread.sleep(8000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        WebElement LogAndReg = driver.findElement(By.xpath(".//*[@id=‘site_nav_md‘]/ul/li[2]/a"));
        LogAndReg.click();
        WebElement usernameBox = driver.findElement(By.xpath(".//*[@id=‘inputUsername‘]"));
        WebElement passwordBox = driver.findElement(By.xpath(".//*[@id=‘inputPassword‘]"));
        WebElement loginButton = driver.findElement(By.xpath(".//*[@id=‘loginreg‘]/div/div[1]/form/p/button"));
        usernameBox.clear();
        usernameBox.sendKeys(username);
        passwordBox.sendKeys(password);
        loginButton.click();
        WebDriverWait wait = new WebDriverWait(driver,10);
        WebElement logoutButton = wait.until(ExpectedConditions.elementToBeClickable(By.xpath(".//*[@id=‘site_nav_md‘]/ul/li[3]/a[2]")));
        logoutButton.click();
    }    
    @AfterClass
    public static void tearDownAfterClass() throws Exception {
        driver.close();
    }
}