How to scroll webpage in automation test in Pytest on LambdaTest

If you want to test scrolling of a webpage using an automation test in Pytest on LambdaTest, you can use the follwing steps. You can refer to sample test repo here.

Steps

Scrolling to bottom of the page

To scroll to the bottom of the page, you can use the following line of code (refer to tests/scroll.py for full code):

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

Infitinite scroll

If you want to scroll to a page with infinite loading, like social network ones, facebook etc. You can use the following code (refer to scroll.py for full code):

SCROLL_PAUSE_TIME = 0.5

# Get scroll height
last_height = driver.execute_script("return document.body.scrollHeight")

#controls how many times scrolled to bottom
scroll_pass = 0

#change to True for infinite scroll
while scroll_pass < 10:
    # Scroll down to bottom
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

    # Wait to load page
    time.sleep(SCROLL_PAUSE_TIME)

    # Calculate new scroll height and compare with last scroll height
    new_height = driver.execute_script("return document.body.scrollHeight")
    if new_height == last_height:
        break
    last_height = new_height 
    scroll_passs+=1

Run your test

python scroll.py

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