def test_guest_can_go_to_sign_in(self, browser):
"""go to sign in page"""
home_page = HomePage(browser) # open home page
home_page.go_to_sign_in() # click sign in button
sign_in_page = SignIn(browser)
sign_in_page.should_be_authentication_header() # check if the page is sign in page
sign_in_page.authentication_should_be_in_breadcrumbs() # check if the page is followed in breadcrumbs
