量角器错误 - 无法启动WebDriver会话

Question

我正试图在http://angular.github.io/protractor/#/上运行普通的Protillactor示例.我已完成所有步骤,但我收到以下错误.

我曾尝试解决这里和这里 有binary: "/Applications/Google\ Chrome.app"和binary: "/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome",和没有工作

我不确定我还能配置什么; 它似乎没有用.知道我能做些什么才能让它发挥作用？

编辑 我可以在http:// localhost:4444/wd/hub看到状态,所以不确定问题是使用protractor配置还是使用webdriver-manager.

webdriver-manager出错:

Starting ChromeDriver 2.13.307650 (feffe1dd547ee7b5c16d38784cd0cd679dfd7850) on port 10276
Only local connections are allowed.
15:18:35.760 WARN - Exception thrown
java.util.concurrent.ExecutionException: org.openqa.selenium.WebDriverException: java.lang.reflect.InvocationTargetException
Build info: version: '2.44.0', revision: '76d78cf', time: '2014-10-23 20:02:37'
System info: host: 'localhost', ip: '127.0.0.1', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.9.5', java.version: '1.8.0_31'
Driver info: driver.version: unknown
  at java.util.concurrent.FutureTask.report(FutureTask.java:122)
  at java.util.concurrent.FutureTask.get(FutureTask.java:192)
  at org.openqa.selenium.remote.server.DefaultSession.execute(DefaultSession.java:175)
  at org.openqa.selenium.remote.server.DefaultSession.<init>(DefaultSession.java:111)
  at org.openqa.selenium.remote.server.DefaultSession.createSession(DefaultSession.java:88)
  at org.openqa.selenium.remote.server.DefaultDriverSessions.newSession(DefaultDriverSessions.java:108)
  at org.openqa.selenium.remote.server.handler.NewSession.handle(NewSession.java:57)`

量角器运行出错:

Using the selenium server at http://localhost:4444/wd/hub
[launcher] Running 1 instances of WebDriver
ERROR - Unable to start a WebDriver session.
/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/atoms/error.js:113
  var template = new Error(this.message);
                 ^
UnknownError: The process has not exited yet therefore no result is available ...
    at new bot.Error (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/atoms/error.js:113:18)
    at Object.bot.response.checkResponse (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/atoms/response.js:106:9)
    at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:152:24
    at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/goog/base.js:1582:15
    at [object Object].webdriver.promise.ControlFlow.runInNewFrame_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:1654:20)
    at notify (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:465:12)
    at notifyAll (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:442:7)
    at resolve (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:420:7)
    at fulfill (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:535:5)
    at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/goog/base.js:1582:15
    at [object Object].webdriver.promise.ControlFlow.runInNewFrame_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:1654:20)
    at notify (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:465:12)
    at notifyAll (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:442:7)
    at resolve (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:420:7)
    at [object Object].fulfill (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:535:5)
    at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/promise.js:721:49
    at /usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/http/http.js:96:5
    at IncomingMessage.<anonymous> (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/http/index.js:131:7)
    at IncomingMessage.emit (events.js:117:20)
    at _stream_readable.js:943:16
    at process._tickCallback (node.js:419:13)
==== async task ====
WebDriver.createSession()
    at Function.webdriver.WebDriver.acquireSession_ (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:149:22)
    at Function.webdriver.WebDriver.createSession (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:123:30)
    at [object Object].Builder.build (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/builder.js:294:22)
    at [object Object].DriverProvider.getNewDriver (/usr/local/lib/node_modules/protractor/lib/driverProviders/driverProvider.js:38:7)
    at [object Object].Runner.createBrowser (/usr/local/lib/node_modules/protractor/lib/runner.js:180:37)
    at /usr/local/lib/node_modules/protractor/lib/runner.js:246:21
    at _fulfilled (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:797:54)
    at self.promiseDispatch.done (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:826:30)
    at Promise.promise.promiseDispatch (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:759:13)
    at /usr/local/lib/node_modules/protractor/node_modules/q/q.js:573:44
    at flush (/usr/local/lib/node_modules/protractor/node_modules/q/q.js:108:17)
    at process._tickCallback (node.js:419:13)
    at Function.Module.runMain (module.js:499:11)
    at startup (node.js:119:16)
    at node.js:906:3
[launcher] Process exited with error code 1`

Answer 1

通过更改为Firefox,我能够将其缩小到查找/初始化Chrome的问题:

exports.config = {
  seleniumAddress: 'http://localhost:4444/wd/hub',
  specs: ['spec.js'],
  capabilities: {
        'browserName': 'firefox'
  },
}

此配置工作正常,并在FF中运行测试.

随后我挖到这个线程:https://github.com/angular/protractor/issues/1424并且看到chromedriver偶尔会出现兼容性问题.

所以我尝试了在http://chromedriver.storage.googleapis.com/index.html上找到的不同版本,最终取代/usr/local/lib/node_modules/protractor/selenium/chromedriver了早期版本(2.9)的最新版本(2.13 ).

这解决了我.

UPDATE

看起来安装较新的Chromedriver版本2.15也可以解决这个问题