appium - 三种等待

强制等待

• sleep(sec)
• 不推荐，但调试或不得不使用时强制等待时可使用

隐式等待

• driver.implicitly_wait(sec)
• 隐式等待时长设置为3-6s，不宜太长

显示等待

• webdriverwait(self.driver,10).until(expected_conditions.visibility_of_element_located(locator))
• 一般页面元素的呈现
  1.首先，title
  2.其次，dom（隐式等待判断元素是否已出现在dom树里，但无法判断其属性是否展示）
  3.然后，css（可见visibility）
  4.最后，js（可点击clickable，显示等待一般判断元素是否可见、可点击）
• html是自上而下加载的
• js加载会阻塞html的加载，为此有些js使用异步加载的方式
• 显示等待设置时长可长一些，比如上传文件需要20s，显示等待时间就可设置为20s

expected_condition

• presence_of_element_located 只能判断此元素在dom里，不能判断元素的属性（如可点击、可见的等）已添加

案例

from time import sleep
from appium import webdriver
from appium.webdriver.common.mobileby import MobileBy
from selenium.webdriver.support import expected_conditions
from selenium.webdriver.support.wait import webdriverwait


class TestDW:
    def setup(self):
        desired_caps = {
            "platformName": "Android",
            "deviceName": "127.0.0.1:7555",
            "platformVersion": "6.0",
            "appPackage": "com.xueqiu.android",
            "appActivity": ".view.WelcomeActivityAlias",
            "noreset": "true",
            # "dontStopAppOnReset": "true",  
            "skipDeviceInitialization": "true",
            "unicodeKeyBoard": "true",
            "resetKeyBoard": "true"
        }

        self.driver = webdriver.Remote('http://127.0.0.1:4723/wd/hub', desired_caps)
        self.driver.implicitly_wait(10)

    def teardown(self):
        self.driver.back()
        # self.driver.quit()

    def test_search(self):
        self.driver.find_element_by_id("com.xueqiu.android:id/tv_search").click()
        self.driver.find_element_by_id("com.xueqiu.android:id/search_input_text").send_keys("alibaba")
        self.driver.find_element_by_xpath("//*[@resource-id='com.xueqiu.android:id/name' and @text='阿里巴巴']").click()

        locator = (MobileBy.XPATH, "//*[@text='09988']/../../..//*[@resource-id='com.xueqiu.android:id/current_price']")
        # webdriverwait(self.driver, 10).until(expected_conditions.element_to_be_clickable(locator))
        ele = webdriverwait(self.driver, 10).until(lambda x: x.find_element(*locator))
        # ele = self.driver.find_element(*locator)
        print(ele.text)
        current_price = float(ele.text)
        expect_price = 170
        assert current_price > expect_price
        sleep(3)