javascript - 如何在 Protractor 中使用异步等待？

Question

我已经将我的node.js版本更新到7.6以上，并且我正在使用ES6。我还附加了错误消息。我正在使用jasmine和javascript来编写测试。没有aysnc-await它工作正常..我无法弄清楚为什么会出现以下错误。任何帮助将不胜感激

  My code is :-
  SELENIUM_PROMISE_MANAGER: false,
  describe("testing login functionalties", function() {

     it("entering the text", async function () {

    browser.get("https://weather.com/en-IN");
    //console.log('ddd')
    browser.ignoreSynchronization= true;
    element(by.xpath("//button[@class='user-login']")).click()
    //browser.ignoreSynchronization= true;
    console.log('ddd')
    element(by.xpath("//input[@type='email']")).sendKeys("offsite.mail1@gmail.com");
    element(by.xpath("//input[@type='password']")).sendKeys("xxxxx");
    var a= element(by.xpath("//button[@class='btn btn-disabled sign-button login-button']"));
    await a.getText();
    console.log(a);
    a.click();


});

});

    And the error i am getting is:-
    /usr/local/Cellar/node/7.9.0/bin/node /usr/local/lib/node_modules/protractor/built/cli.js /Users/amrit/WebstormProjects/E2E/conf.js
    (node:13230) DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
    (node:13230) DeprecationWarning: `DEBUG_FD` is deprecated. Override `debug.log` if you want to use a different log function (https://git.io/vMUyr)
    [16:03:41] I/local - Starting selenium standalone server...
    [16:03:41] I/launcher - Running 1 instances of WebDriver
    [16:03:42] I/local - Selenium standalone server started at http://10.101.23.28:60360/wd/hub
    Started
    F

    Failures:
    1) testing login functionalties encountered a declaration exception
      Message:
        Error: async function () {

                browser.get("https://weather.com/en-IN");
                //console.log('ddd')
                browser.ignoreSynchronization= true;
                element(by.xpath("//button[@class='user-login']")).click()
                //browser.ignoreSynchronization= true;
                console.log('ddd')
                element(by.xpath("//input[@type='email']")).sendKeys("offsite.mail1@gmail.com");
                element(by.xpath("//input[@type='password']")).sendKeys("xxxxx");
                var a= element(by.xpath("//button[@class='btn btn-disabled sign-button login-button']"));
                await a.getText();
                console.log(a);
                a.click();


            } is not a function
      Stack:
        Error: async function () {

                browser.get("https://weather.com/en-IN");
                //console.log('ddd')
                browser.ignoreSynchronization= true;
                element(by.xpath("//button[@class='user-login']")).click()
                //browser.ignoreSynchronization= true;
                console.log('ddd')
                element(by.xpath("//input[@type='email']")).sendKeys("offsite.mail1@gmail.com");
                element(by.xpath("//input[@type='password']")).sendKeys("xxxxx");
                var a= element(by.xpath("//button[@class='btn btn-disabled sign-button login-button']"));
                await a.getText();
                console.log(a);
                a.click();


            } is not a function
            at validateFunction (/usr/local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:30:11)
            at /usr/local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:116:16
            at Suite.<anonymous> (/Users/amrit/WebstormProjects/E2E/Describe.js:8:5)
            at Object.<anonymous> (/Users/amrit/WebstormProjects/E2E/Describe.js:6:1)
            at Module._compile (module.js:571:32)
            at Object.Module._extensions..js (module.js:580:10)
            at Module.load (module.js:488:32)

    1 spec, 1 failure
    Finished in 0.011 seconds
    [16:03:44] I/local - Shutting down selenium standalone server.
    [16:03:44] I/launcher - 0 instance(s) of WebDriver still running
    [16:03:44] I/launcher - chrome #01 failed 1 test(s)
    [16:03:44] I/launcher - overall: 1 failed spec(s)
    [16:03:44] E/launcher - Process exited with error code 1

    Process finished with exit code 1

Answer 1

刚刚运行了快速测试并能够重现您的错误。经过一点调试，问题似乎出在 Jasmine 上(至少是 Protractor 5.1.1 附带的那个)。我能够通过安装 Mocha 来让 async-await 工作。 ，并在配置中选择它作为framework。