Not able to close the browser using NightwatchJS

问题

I am trying to open my url using Nightwatch and I wan't able to close the browser afterwards.

I tried using timeouts, as well as browser.end(), or browser.closeWindow(). None of them seem to be working for my url.

module.exports = {
  'Demo test mywrkouts' : function (browser) {
    browser.url('https://www.mywrkouts.com/workouts/search')
    browser.timeouts('script', 10000, function(result) {
    browser.end();
      console.log("Test result"+result);
    });
    //browser.closeWindow();
  }
};

It opens the page, but doesn't close the browser. I am using Chrome browser with chromedriver. I am expecting to close the window, but it doesn't work.

Any advice is appreciated.

回答1:

LE: Like I extensibly described below, you don't need to explicitly close the browser at the end of the test (via browser.end()) as the Nightwatch test-runner does that for you at the end of each feature-file.

But, if you need to do some teardown operations and then explicitly close the session, do it in an after (or afterEach) hook. Try the following snippet:

module.exports = {

  before(browser) {
    browser.maximizeWindow();
  },

  'My Wrkouts Test': (browser) => {

    browser.url('https://www.mywrkouts.com/');
    // Check if the website logo is visible:
    browser.expect.element('#barbell-homepage-top-image-desktop img.app-bar-desktop-logo').to.be.visible;
    // Check the articles heading text:
    browser.expect.element('h3.blog-carousel-title.primary-blue-text.center').text.to.contain('Foundational Education Series');
  },

  after(browser, done) {
    browser.end(() => {
      console.info('*--*--*--*--*--*--*--*--*--*--*--*--*');
      console.info('*-- Clossing session... Good bye! --*');
      console.info('*--*--*--*--*--*--*--*--*--*--*--*--*');
      done();
    });
  }
};

---

Anyways, I feel you are confusing the way NightwatchJS/WebdriverIO/Protractor (or any other Webdriver-based test solution) is handling a browser session.

First off, you need not worry about closing the active session. Nightwatch does it for you at the end of each test feature-file. Thus, running a suit of let's say three test suites (login.js, register.js, forgot_password.js) will sequentially spawn & close three different browser sessions.

Also, browser.closeWindow() is only used for closing a window instance (taking into account that you have multiple windows associated with the same browser session). It won't close your main window, unless you have switched to another window instance (which was previously opened during your test run).

If you use browser.end() in the middle of your test, then you basically kill the active session, nullifying the following logic from your feature-file:

INFO Request: DELETE /wd/hub/session/4a4bb4cb1b38409ee466b0fc8af78101
 - data:
 - headers:  {"Content-Length":0,"Authorization":"Basic Z29wcm86YmM3MDk2MGYtZGE0Yy00OGUyLTk5MGMtMzA5MmNmZGJhZTMz"}
INFO Response 200 DELETE /wd/hub/session/4a4bb4cb1b38409ee466b0fc8af78101 (56ms) { sessionId: '4a4bb4cb1b38409ee466b0fc8af78101',
  status: 0,
  value: null }
LOG     → Completed command end (57 ms)

Everything after will look like this:

INFO Response 404 POST /wd/hub/session/null/elements (11ms) { sessionId: 'null',
  value:
   { error: 'invalid session id',
     message: 'No active session with ID null',
     stacktrace: '' },
  status: 6 }

!Note: There is no support for doing what you are trying to do, nor is it a common use-case, thus the lack of support for it across all of these testing solutions.

They say a picture is worth 1000 words, so let's me simply put it this way... what you are trying to do is synonymous with the following:

来源：https://stackoverflow.com/questions/54507540/not-able-to-close-the-browser-using-nightwatchjs