Selenium setting window size is inaccurate, finally solved

The window size set by selenium is not accurate, and an error occurs during functional testing. It turns out that this is the reason. Let’s summarize!

from selenium import webdriver
self.browser = webdriver.Firefox()
self.browser.set_window_size(1024, 768)
self.browser.get_window_size()    
    {u'height': 638, 'value': None, u'width': 1229}

This is how it passed during the test:

inputbox = self.browser.find_element_by_id('id_new_item')
self.assertAlmostEqual(
    inputbox.location['x'] + inputbox.size['width']/2,
    # 512,
    self.browser.get_window_size().get("width")/2,
    delta=5
)

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