Nightwatch testing: Set browser to fixed size

set it up once and for all in your env configuration (under test_settings in the nightwatch config file):

"desiredCapabilities": {
    "chromeOptions": {
        "args": [
            "window-size=1280,800"
        ]
    }
}

note that this method will work because we're setting a chrome flag, so implementation may vary (e.g. safari does not have such flags).

for browsers that do not support these options, it's best to resize the window imperatively in the globals beforeEach hook:

{
    beforeEach: function (browser, done) {
        browser.resizeWindow(1280, 800, done);
    }
}

have a read on the nightwatch settings docs to see how globals are used.

using the above methods, you won't have to specify it in each test :)

You can fix the screen size before each test like that :

module.exports = {
  tags: ['myTest'],
  before : function (browser) {
    browser.resizeWindow(800, 600);
  },
  'Test #1' : function (browser) {
    return browser
      .url('http://localhost/test1')
      .waitForElementVisible('body', 2000); 
  },
  'Test #2' : function (browser) {
    return browser
      .url('http://localhost/test2')
      .waitForElementVisible('body', 2000); 
  },
  after : function (browser) {
    browser.end();
  }
}