def test_d1_logout(self):
#test log out.
#when success logged in, current page is HomePage.
home_page = HomePage(self.driver)
home_page.click_menu_button()
home_page.click_logout_button()
#should check(assert) logout successful
#when successfully logged out, current page is
login_page = LogInOutPage(self.driver)
assert login_page.check_if_loaded()
