These are classes used to describe what needs to be waited for.
Expected Conditions are used with Explicit Waits. Instead of defining the block of code to be executed with a lambda, an expected conditions method can be created to represent common things that get waited on. Some methods take locators as arguments, others take elements as arguments.
wait = WebDriverWait(driver, timeout=2)
wait.until(EC.visibility_of_element_located((By.ID, "revealed")))from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.wait import WebDriverWait
# Expected Conditions API Documentation:
# https://www.selenium.dev/selenium/docs/api/py/webdriver_support/selenium.webdriver.support.expected_conditions.html
def test_expected_condition(driver):
driver.get("https://www.selenium.dev/selenium/web/dynamic.html")
revealed = driver.find_element(By.ID, "revealed")
driver.find_element(By.ID, "reveal").click()
wait = WebDriverWait(driver, timeout=2)
wait.until(EC.visibility_of_element_located((By.ID, "revealed")))
revealed.send_keys("Displayed")
assert revealed.get_property("value") == "Displayed"
.NET stopped supporting Expected Conditions in Selenium 4 to minimize maintenance hassle and redundancy.
Ruby makes frequent use of blocks, procs and lambdas and does not need Expected Conditions classes
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