How to use getTmpFsBasedOn method of org.openqa.selenium.io.TemporaryFilesystem class

As you mentioned

• yes, Chrome and Firefox browsers have headless mode.
• you need to update versions it is also yes

But you can eliminate that issue by using web-driver manager. Because of this Even you don't need to download chromedriver.exe manually.

WebDriverManager.chromedriver().setup();
ChromeOptions chromeOptions = new ChromeOptions();
chromeOptions.addArguments("--no-sandbox");
chromeOptions.addArguments("--headless");
chromeOptions.addArguments("disable-gpu");
ChromeDriver driver = new ChromeDriver(chromeOptions);
  

Web driver manager dependency

<dependency>
    <groupId>io.github.bonigarcia</groupId>
    <artifactId>webdrivermanager</artifactId>
    <version>3.6.2</version>
</dependency>

Git Hub Link https://github.com/bonigarcia/webdrivermanager

DesiredCapabilities would help you to change user agent.

You can achieve this by calling these methods:

• setBrowserName(java.lang.String browserName)
• setPlatform(Platform platform)
• setVersion(java.lang.String version)

Or

• static DesiredCapabilities chrome()
• static DesiredCapabilities firefox()
• static DesiredCapabilities iphone()
• ...

More here.

WebDriverWait inherits methods like wait until.

So something like

webDriverWait.until(ExpectedConditions.visibilityOfElementLocated( elementLocator)

should work. You can use ExpectedConditions, it would make things simpler. You can also use the method visibilityOfAllElements

To my knowledge you can only disable that behaviour globally. There is a preference called dom.disable_beforeunload. You should change its value to true. With Selenium, you can create a new customized Firefox profile:

FirefoxProfile customProfile = new FirefoxProfile();
customProfile.setPreference("dom.disable_beforeunload", true);
FirefoxDriver driver = new FirefoxDriver(customProfile);

You can use JavaScriptExecutor for scrolling.

Scroll Down

((JavascriptExecutor)driver).executeScript("window.scrollTo(0,document.body.scr‌​ollHeight);");

Scroll Up

((JavascriptExecutor)driver).executeScript("window.scrollTo(0,0);");

You are probably picking up JUnit3 on your classpath somewhere, which effectively disables JUnit4.

Run mvn dependency:tree to find out where it's coming in from and add exclude if from the dependency.

Given you already found your element and you want to check for a certain class inside the class-attribute:

public boolean hasClass(WebElement element) {
    String classes = element.getAttribute("class");
    for (String c : classes.split(" ")) {
        if (c.equals(theClassYouAreSearching)) {
            return true;
        }
    }
    
    return false;
}

#EDIT As @aurelius rightly pointed out, there is an even simpler way (that doesn't work very well):

public boolean elementHasClass(WebElement element, String active) {
    return element.getAttribute("class").contains(active);
}

This approach looks simpler but has one big caveat:

As pointed out by @JuanMendes you will run into problems if the class-name you're searching for is a substring of other class-names:

for example class="test-a test-b", searching for class.contains("test") will return true but it should be false

#EDIT 2 Try combining the two code snippets:

public boolean elementHasClass(WebElement element, String active) {
    return Arrays.asList(element.getAttribute("class").split(" ")).contains(active);
}

That should fix your caveat.

I ran across this same problem and could not find any solutions. Came up with a solution and posting it here, hope this helps someone with the same problem. I created a class to handle stale elements depending on their type, cssselector, id, etc and simply call it like I would any other page object.

public void StaleElementHandleByID (String elementID)
{
    int count = 0;
    boolean clicked = false;
    while (count < 4 && !clicked)
    {
        try 
        {
            WebElement yourSlipperyElement= driver.findElement(By.id(elementID));
            yourSlipperyElement.click(); 
            clicked = true;
        } 
        catch (StaleElementReferenceException e)
        {
            e.toString();
            System.out.println("Trying to recover from a stale element :" + e.getMessage());
            count = count+1;
        }
    }
}

I'd recommend only using this on elements you know cause problems for WebDriver.

DatePicker are not Select element. What your doing in your code is wrong.

Datepicker are in fact table with set of rows and columns.To select a date you just have to navigate to the cell where our desired date is present.

So your code should be like this:

WebElement dateWidget = driver.findElement(your locator);
List<WebElement> columns=dateWidget.findElements(By.tagName("td"));

for (WebElement cell: columns){
   //Select 13th Date 
   if (cell.getText().equals("13")){
      cell.findElement(By.linkText("13")).click();
      break;
 }