当试图运行对MochaJS的测试时，带有iOS“不是JSON响应”的Appium

Question

我已经尝试了http://appium.io/slate/en/1.5.3/?javascript#ios列出的故障排除步骤，但没有成功。

我做测试的时候：

$ mocha sample.js

这将成功地将应用程序安装到设备上并打开它，但是每次在第一步测试都会失败，出现以下错误：

错误:elementByName(“用户名”)不是JSON响应

  at exports.newError (node_modules/wd/lib/utils.js:145:13)
  at node_modules/wd/lib/callbacks.js:59:17
  at node_modules/wd/lib/webdriver.js:179:5
  at Request._callback (node_modules/wd/lib/http-utils.js:88:7)
  at Request.self.callback (node_modules/request/request.js:187:22)
  at Request.<anonymous> (node_modules/request/request.js:1048:10)
  at IncomingMessage.<anonymous> (node_modules/request/request.js:969:12)
  at endReadableNT (_stream_readable.js:974:12)
  at _combinedTickCallback (internal/process/next_tick.js:74:11)
  at process._tickCallback (internal/process/next_tick.js:98:9)

这是我的测试：

​

//example from built.io
"use strict";
require("./helpers/setup");
require('colors');

var wd = require("wd"),
	_ = require('underscore'),
	Q = require('q'),
	serverConfigs = require('./helpers/appium-servers');

var serverConfig = serverConfigs.local;
var driver = wd.promiseChainRemote(serverConfig);
var pry  =  require('pryjs');

var _p        = require('./helpers/promise-utils');  // needed?
var simulator = false
var chai      = require("chai");
// var assert    = require('assert'); //needed?
var assert    = chai.assert;

// var config  = require('./helpers/config')
chai.config.includeStack = true;



describe("Node Sample Automation Code", function() {
	this.timeout(300000);
	var allPassed = true;

	before(function() {
		var serverConfig = process.env.SAUCE ? serverConfigs.sauce : serverConfigs.local;
		var driver = wd.promiseChainRemote(serverConfig);
		require("./helpers/logging").configure(driver);
		var desired = _.clone(require("./helpers/caps").mycapabilities);
		desired.app = require("./helpers/apps").myTestApp;
		if (process.env.SAUCE) {
			desired.name = 'Automation Code';
			desired.tags = ['sample'];
		}
		return driver.init(desired);
	});

	after(function() {
		return driver
		.sleep(3000).quit().finally(function() {
			if (process.env.SAUCE) {
				return driver.sauceJobStatus(allPassed);
			}
		});
	});

	afterEach(function() {
		allPassed = allPassed && this.currentTest.state === 'passed';
	});

	it("Should Login", function() {
		return driver
		.elementByName('Username').click()
		//same field - this doesn't work either
		// .elementByXPath("//UIAApplication[1]/UIAWindow[1]/UIATextField[1]")
	});
});

​

对于elementByXPath命令，我也有相同的错误，它使用Appium检查器显示的元素的确切路径。在这两种情况下，我使用的命令与在其他设置(也是iOS和mocha)中工作的其他测试的示例完全一样，这使我相信这不是我使用命令的原因，而是设备和Appium之间的通信出现了根本问题。

以下是Appium日志的摘录，它似乎适用于错误：

2016-12-26 03:47:43:217 - [MJSONWP] Responding to client with driver.getStatus() result: {"build":{"version":"1.5.3"...
2016-12-26 03:47:43:233 - [HTTP] --> POST /wd/hub/session/element {"using":"name","value":"Username"}
2016-12-26 03:47:43:237 - [debug] [HTTP] No route found. Setting content type to 'text/plain'
2016-12-26 03:47:43:239 - [HTTP] <-- POST /wd/hub/session/element 404 5 ms - 65 
2016-12-26 03:47:43:242 - [MJSONWP] Responding to client with driver.getStatus() result: {"build":{"version":"1.5.3"...

--我希望任何人能提供任何帮助，甚至猜测或提示“非JSON响应”错误意味着什么，以及为什么会发生这种情况。提前谢谢。。

Answer 1

我定义了两次驱动程序--在“前”块中注释它之后，并使用XPath命令而不是.elementByName，它起了作用。