Python selenium.webdriver.common.keys.Keys 模块，NULL 实例源码

def _map_ascii_key_code_to_key(self, key_code):
        map = {
            0: Keys.NULL,
            8: Keys.BACK_SPACE,
            9: Keys.TAB,
            10: Keys.RETURN,
            13: Keys.ENTER,
            24: Keys.CANCEL,
            27: Keys.ESCAPE,
            32: Keys.SPACE,
            42: Keys.MULTIPLY,
            43: Keys.ADD,
            44: Keys.SEPARATOR,
            45: Keys.SUBTRACT,
            56: Keys.DECIMAL,
            57: Keys.DIVIDE,
            59: Keys.SEMICOLON,
            61: Keys.EQUALS,
            127: Keys.DELETE
        }
        key = map.get(key_code)
        if key is None:
            key = chr(key_code)
        return key

def test_performs_key_combinations(self, browser):
        receiver = browser.text_field(id='receiver')
        receiver.send_keys('foo')
        receiver.send_keys(MODIFIER + 'a' + Keys.NULL)
        receiver.send_keys(Keys.BACKSPACE)
        assert receiver.value == ''
        assert len(browser.element(id='output').ps()) == 6

def test_performs_arbitrary_list_of_key_combinations(self, browser):
        receiver = browser.text_field(id='receiver')
        receiver.send_keys('foo')
        receiver.send_keys(MODIFIER + 'a' + Keys.NULL + MODIFIER + 'x' + Keys.NULL)
        assert receiver.value == ''
        assert len(browser.element(id='output').ps()) == 7

def GetFocus(cls):
        log.step_normal(u"Element [%s]: GetFocus()" % (cls.__name__, ))

        # cls.__wait()
        WebDriverWait(env.driver, 10).until(lambda the_driver:
                                            the_driver.find_element(cls.by, cls.value).is_displayed())
        elements = env.driver.find_elements(cls.by, cls.value)

        elements[cls.index].send_keys(Keys.NULL)

        action = webdriver.ActionChains(env.driver)
        action.send_keys_to_element(elements[cls.index], Keys.NULL)
        action.perform()

        cls.__clearup()