'should is element not visible by xpath returns false if element is visible'

def test_is_element_not_visible_by_xpath_returns_false_if_element_is_visible(self):

    self.browser.find_by_css('.show-invisible-element').click()
    self.assertFalse(self.browser.is_element_not_visible_by_xpath('//div[@id="invisible"]'))
