Exception Handling

Selenium has its own set of exceptions while writing automation scripts. A programmer has to handle or throw those exceptions.

WebDriver exception #

All runtime exception classes in Selenium WebDriver come under the superclass WebDriverException.

The most common exceptions under WebDriverException class are:

• NoSuchElementException - the element is not found during runtime using FindBy method
• StaleElementReferenceException - the referenced element is no longer present on the DOM page
• NoSuchWindowException - switching to an invalid window
• InvalidSelectorException - wrong or invalid selector used to find an element
• ElementNotSelectableException - the element present but disabled in the DOM
• TimeoutException - the element didn’t display in the specified time
• NoSuchFrameException - switching to an invalid frame
• NoAlertPresentException - switching to an invalid alert
• ElementNotVisibleException - when an element is present in the DOM but cannot be interacted with, e.g., Hidden Elements