使用 Appium 测试微信小程序 Webview

学向勤中得，萤窗万卷书。这篇文章主要讲述使用 Appium 测试微信小程序 Webview相关的知识，希望能为你提供帮助。
打开调试功能通过微信打开debugx5.qq.com，或者直接扫下面二维码

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勾选【打开TBS内核Inspector调试功能】

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Chrome查看页面元素手机连接电脑，查看是否连接成功。如下展示设备号则为连接成功

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【使用 Appium 测试微信小程序 Webview】
进入任意小程序，以【X东】为例，在Chrome浏览器访问chrome://inspect/#devices

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点击inspact，即可查看页面元素

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小程序的进程微信有很多的进程，每一个小程序都运行在不同的进程中。
进入【X东】后，看下当前运行在哪个进程中

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我们可以看到，当前的小程序运行在com.tencent.mm:appbrand0中，记住这个进程，记住啦

Appium编写测试用例最关键的一点，需要添加androidProcess这一项，也就是我们上面的com.tencent.mm:appbrand0
我用python写一个简单的demo

desired_caps = { ‘platformName‘: ‘Android‘, ‘fastReset‘: ‘false‘, ‘deviceName‘: ‘XXXXXX‘, ‘appPackage‘: ‘com.tencent.mm‘, ‘appActivity‘: ‘.ui.LauncherUI‘, ‘fullReset‘: ‘false‘, ‘unicodeKeyboard‘: ‘True‘, ‘resetKeyboard‘: ‘True‘, ‘chromeOptions‘: { ‘androidProcess‘: ‘com.tencent.mm:appbrand0‘ } } driver = webdriver.Remote(‘http://localhost:4723/wd/hub‘, desired_caps) driver.find_element_by_name("发现").click() driver.find_element_by_name("小程序").click() driver.find_element_by_name("X东购物").click() driver.switch_to.context(‘WEBVIEW_com.tencent.mm:appbrand0‘) time.sleep(5) print(driver.page_source)

切换Webview失败我遇到过一种切换Webview失败的情况，下面贴上appium的报错日志。

> info: Chromedriver: Changed state to ‘stopped‘ > error: Chromedriver: Chromedriver exited unexpectedly with code null, signal SIGTERM > warn: Chromedriver for context WEBVIEW_com.tencent.mm:appbrand1 stopped unexpectedly > warn: Chromedriver quit unexpectedly, but it wasn‘t the active context, ignoring > error: Chromedriver: Error: A new session could not be created. (Original error: session not created exception > from unknown error: Runtime.executionContextCreated has invalid ‘context‘: {"auxData":{"frameId":"32496.2","isDefault":true},"id":2,"name":"","origin":"https://servicewechat.com"} > (Session info: chrome=57.0.2987.132) > (Driver info: chromedriver=2.18.343845 (73dd713ba7fbfb73cbb514e62641d8c96a94682a),platform=Windows NT 6.1 SP1 x86_64)) > at JWProxy.command$ (lib/proxy.js:133:15) > at tryCatch (D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\regenerator\runtime.js:67:40) > at GeneratorFunctionPrototype.invoke [as _invoke] (D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\regenerator\runtime.js:315:22) > at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\regenerator\runtime.js:100:21) > at GeneratorFunctionPrototype.invoke (D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\regenerator\runtime.js:136:37) > at bound (domain.js:284:14) > at GeneratorFunctionPrototype.runBound (domain.js:297:12) > at run (D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\node_modules\core-js\library\modules\es6.promise.js:89:39) > at D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\node_modules\core-js\library\modules\es6.promise.js:100:28 > at flush (D:\Appium\node_modules\appium\node_modules\appium-chromedriver\node_modules\appium-jsonwp-proxy\node_modules\babel-runtime\node_modules\core-js\library\modules\$.microtask.js:17:13) > at process._tickDomainCallback (node.js:381:11) > { [Error: A new session could not be created. (Original error: session not created exception > from unknown error: Runtime.executionContextCreated has invalid ‘context‘: {"auxData":{"frameId":"32496.2","isDefault":true},"id":2,"name":"","origin":"https://servicewechat.com"} > (Session info: chrome=57.0.2987.132) > (Driver info: chromedriver=2.18.343845 (73dd713ba7fbfb73cbb514e62641d8c96a94682a),platform=Windows NT 6.1 SP1 x86_64))] > status: 33, > value: { message: ‘session not created exception\nfrom unknown error: Runtime.executionContextCreated has invalid \‘context\‘: {"auxData":{"frameId":"32496.2","isDefault":true},"id":2,"name":"","origin":"https://servicewechat.com"}\n(Session info: chrome=57.0.2987.132)\n(Driver info: chromedriver=2.18.343845 (73dd713ba7fbfb73cbb514e62641d8c96a94682a),platform=Windows NT 6.1 SP1 x86_64)‘ },

注意最后那一段的chrome和chromedriver的版本