在main方法之后不执行的下一个方法

Question

我必须使用第一个文件包含登录详细信息的文件。第一个文件是loginDetailsClass.java，下面是文件中的代码。

public class loginDetailsClass {

    @SuppressWarnings("deprecation")
    public static void browserLaunch() {

        WebDriver driver;
        String baseurl = "https://www.facebook.com/";       
        System.setProperty("webdriver.chrome.driver","D:\\eclipse-workspace\\chromedriver.exe");
        DesiredCapabilities capabilities = DesiredCapabilities.chrome();
    capabilities.setCapability("chrome.switches", Arrays.asList("--incognito"));
        ChromeOptions options = new ChromeOptions();
        options.addArguments("--test-type");
        options.addArguments("--disable-extensions");
        options.addArguments("--disable-infobars");
        capabilities.setCapability("chrome.binary","D:\\eclipse-workspace\\chromedriver.exe");
        capabilities.setCapability(ChromeOptions.CAPABILITY, options);
        driver = new ChromeDriver(capabilities);
        driver.manage().deleteAllCookies();
        driver.manage().window().maximize();
        driver.get(baseurl);

    //Login section
        try {
            Thread.sleep(7000); // 1000 milliseconds is one second.
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        } 

        WebElement usnfield = driver.findElement(By.id("email"));
        usnfield.sendKeys("alex");
        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }
        WebElement pwdfield = driver.findElement(By.id("pass"));
        pwdfield.sendKeys("alex42");
        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt(); 
        }
        WebElement lgn_btn = driver.findElement(By.id("u_0_8"));
        lgn_btn.click();

    }
 }

第二个文件是facebookClass.java，下面是文件中的代码。

public class facebookClass {

    static WebDriver driver;

    @Test(priority = 0)
    public static void main(String[] args) {

        loginDetailsClass.browserLaunch(); //function called from loginDetailsClass.java page
        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

    @Test(priority = 1) 
    public static void searchfriends() {


        //Switching to iFrame for locating elements
         driver.switchTo().frame(driver.findElement(By.id("contentFrame")));

        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
        Thread.currentThread().interrupt();
        }

        //Searching a friend using friend name field
        WebDriverWait wait = new WebDriverWait (driver, 20);
        WebElement friendName = wait.until(ExpectedConditions.elementToBeClickable(By.id("txtFriendName")));
        friendName.sendKeys("James");

        try {
            Thread.sleep(10000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

        WebElement clck_Search = driver.findElement(By.id("btnSearch"));
        clck_Search.click();

        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

        WebElement select_friend = driver.findElement(By.xpath("//*[@id=\"trFriend_3\"]"));
        select_friend.click();

        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

        //Switching back to main frame from iFrame
        driver.switchTo().defaultContent();
        try {
            Thread.sleep(7000);
        } catch (InterruptedException ex) {
            Thread.currentThread().interrupt();
        }


     }

     @Test(priority = 2)
     public static void logout() {

         //Logout
         WebElement logout = driver.findElement(By.xpath("/html/body/form/table/tbody/tr[1]/td/div/div[8]/table/tbody/tr/td[2]"));
         logout.click();        

         try {
             Thread.sleep(7000);
         } catch (InterruptedException ex) {
             Thread.currentThread().interrupt(); 
         }
         driver.close();
         }

   }

执行facebookClass.java时，正确调用login方法并且登录成功。但是从 public static void searchfriends（）方法开始，执行不起作用。在最初的几天，所有方法都成功执行。但是从第二天起它就开始工作了。