Question

我一直在尝试使用此页面中的Selenium示例：https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Cross_browser_testing/Your_own_automation_environment。

我已完成以下步骤：

设置新的npm项目
使用npm install selenium-webdriver
我还得到了GeckoDriver和ChromeDriver，并将它们添加到我的路径中。
然后我创建了示例google_test.js的本地副本（如下所示）并使用命令node google_test运行它。

var webdriver = require（'selenium-webdriver'），     通过= webdriver.By，     until = webdriver.until;

var driver = new webdriver.Builder（）     .forBrowser（ '火狐'）     .build（）;

driver.get（ 'http://www.google.com'）;

driver.findElement（By.name（ 'Q'））的SendKeys（ '的webdriver'）;

driver.sleep（1000）.then（function（）{   driver.findElement（By.name（ 'Q'））的SendKeys（webdriver.Key.TAB）。 }）;

driver.findElement（By.name（ 'btnK'））点击（）;

driver.sleep（2000）.then（function（）{   driver.getTitle（）。then（function（title）{     if（title ==='webdriver - Google Search'）{       console.log（'测试通过'）;     } else {       console.log（'测试失败'）;     }   }）; }）;

driver.quit（）;

我的问题是，对我来说，上面的例子只会打开一个新的Firefox实例，并立即关闭而不执行任何操作。

运行命令node google_test后，我收到以下错误消息：

(node:23652) UnhandledPromiseRejectionWarning: SessionNotCreatedError: Tried to run command without establishing a connection
    at Object.throwDecodedError (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/error.js:550:15)
    at parseHttpResponse (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:542:13)
    at Executor.execute (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:468:26)
    at process._tickCallback (internal/process/next_tick.js:178:7)
(node:23652) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:23652) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
(node:23652) UnhandledPromiseRejectionWarning: SessionNotCreatedError: Tried to run command without establishing a connection
    at Object.throwDecodedError (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/error.js:550:15)
    at parseHttpResponse (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:542:13)
    at Executor.execute (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:468:26)
    at process._tickCallback (internal/process/next_tick.js:178:7)
(node:23652) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:23652) UnhandledPromiseRejectionWarning: SessionNotCreatedError: Tried to run command without establishing a connection
    at Object.throwDecodedError (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/error.js:550:15)
    at parseHttpResponse (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:542:13)
    at Executor.execute (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:468:26)
    at process._tickCallback (internal/process/next_tick.js:178:7)
(node:23652) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 3)
(node:23652) UnhandledPromiseRejectionWarning: SessionNotCreatedError: Tried to run command without establishing a connection
    at Object.throwDecodedError (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/error.js:550:15)
    at parseHttpResponse (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:542:13)
    at Executor.execute (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:468:26)
    at process._tickCallback (internal/process/next_tick.js:178:7)
(node:23652) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 5)
(node:23652) UnhandledPromiseRejectionWarning: SessionNotCreatedError: Tried to run command without establishing a connection
    at Object.throwDecodedError (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/error.js:550:15)
    at parseHttpResponse (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:542:13)
    at Executor.execute (/home/hanbin/programman/webdev/selenium-test/node_modules/selenium-webdriver/lib/http.js:468:26)
    at process._tickCallback (internal/process/next_tick.js:178:7)
(node:23652) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 6)

我的package.json文件是：

{
  "name": "selenium-test",
  "version": "1.0.0",
  "description": "", 
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },  
  "author": "", 
  "license": "ISC",
  "dependencies": {
    "selenium-webdriver": "^4.0.0-alpha.1"
  }
}

有人可以帮助我吗？

使用MDN的Node.js的Selenium示例不起作用？

0 个答案: