What restrictions exist when using Selenium for web testing automation?

• Performance: Running tests through a browser can be slow, especially with a large number of tests or complex UI.
• Browser dependency: Requires an installed browser and the appropriate driver, which can complicate environment setup.
• Version dependency: Compatibility between Selenium, drivers, and browser versions requires constant maintenance.
• Testing non-web applications: Selenium is designed exclusively for web UI and is not suitable for API, desktop, or mobile native applications.
• Interacting with individual elements: Interaction occurs at the interface element level, which limits "black box" testing when internal logic needs to be checked.
• Synchronization: Managing expectations for element loading and asynchronous processes requires careful implementation of waits (Implicit, Explicit Waits).
• Instability: Tests can be sensitive to changes in the DOM, leading to "failing" tests due to element search issues.
• Lack of built-in reporting: Selenium does not provide comprehensive mechanisms for generating test pass reports (requires integration with TestNG, JUnit, Allure, etc.).
• Captchas and complex UI: Automating captcha bypass or interacting with complex, non-standard UI elements can be difficult or impossible.
• Limited iframe support: Working with nested iframes requires manual context switching.

# Example of wait that helps with synchronization but still requires configuration
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as ec
from selenium.webdriver.common.by import By

# Wait for the visibility of an element for up to 10 seconds
element = WebDriverWait(driver, 10).until(
    ec.visibility_of_element_located((By.ID, "some_element_id"))
)