等待UI

一些复杂的测试用例中，不可能只是不断地主动控制或者读取属性。通过被动地获取UI状态改变的事件，这样有助于写出不混乱的测试脚本。Poco提供了简单的轮询机制去同时轮询1个或多个UI控件，所谓轮询就是依次判断UI是否存在。本节将详细介绍UI同步方法，以让你的脚本时刻保持与当前UI状态同步，适应各种各样的运行环境。

下面例子展示的是最简单的UI同步

# coding=utf-8

from poco.drivers.unity3d import UnityPoco

poco = UnityPoco()

# start and waiting for switching scene
start_btn = poco('start')
start_btn.click()
start_btn.wait_for_disappearance()

# waiting for the scene ready then click
exit_btn = poco('exit')
exit_btn.wait_for_appearance()
exit_btn.click()

下面例子展示轮询UI时等待 任意一个 UI出现就往下走

The fish and bomb will come up from bottom right to left. Click the fish and avoid the bomb.

../../../_images/wait_any_ui.gif 
# coding=utf-8

from poco.drivers.unity3d import UnityPoco
from poco.exceptions import PocoTargetTimeout

poco = UnityPoco()

bomb_count = 0
while True:
    blue_fish = poco('fish_emitter').child('blue')
    yellow_fish = poco('fish_emitter').child('yellow')
    bomb = poco('fish_emitter').child('bomb')
    fish = poco.wait_for_any([blue_fish, yellow_fish, bomb])
    if fish is bomb:
        # skip the bomb and count to 3 to exit
        bomb_count += 1
        if bomb_count > 3:
            return
    else:
        # otherwise click the fish to collect.
        fish.click()
    time.sleep(2.5)

下面例子展示轮询UI时等待 所有 UI出现才往下走

Wait until all 3 fishes appear on the screen.

../../../_images/wait_all_ui.gif 
# coding=utf-8

import time
from poco.drivers.unity3d import UnityPoco

poco = UnityPoco()

poco(text='wait UI 2').click()

blue_fish = poco('fish_area').child('blue')
yellow_fish = poco('fish_area').child('yellow')
shark = poco('fish_area').child('black')

poco.wait_for_all([blue_fish, yellow_fish, shark])
poco('btn_back').click()
time.sleep(2.5)

更多示例：