How to use send_cmd method of Selenium.WebDriver Package

If you install the headless gem (and its system dependencies) it should be easy to start the browser in headless scope:

Headless.ly do
  # start your browser
end

Selenium and capybara-webkit use separate threads when launching processes. When you run activate_authlogic it does the following

Authlogic::Session::Base.controller = (@request && Authlogic::TestCase::RailsRequestAdapter.new(@request)) || controller

This winds up setting a thread local variable for :authlogic_controller. The problem is that this gets lost when you start using new threads in scenarios tagged with @javascript.

For me, the fix was to monkeypatch authlogic code like so

module Authlogic
  module Session
    module Activation
      module ClassMethods
        def controller
          if !Thread.current[:authlogic_controller]
            Thread.current[:authlogic_controller] = Authlogic::TestCase::MockController.new
          end
          Thread.current[:authlogic_controller]
        end
      end
    end
  end
end

This replicates what is done in acivate_authlogic. Make sure you only patch your test environment.

Well I found the reason of the issue and the solution.

Reason: We use responsive design, and apparently travis uses a small window size which turned on the mobile design and that is why it couldn't find the elements.

Solution:

script:
- xvfb-run --server-args="-screen 0 1024x768x24" bundle exec rspec spec/features/*.rb

You basically set windows size to a larger size.

I don't think there is a way but you could always do something like this (with watir-webdriver):

browser.divs.each do |div|
    puts '<span ' + ['id','class','title'].map{|x| "#{x}='#{div.attribute_value(x)}'"}.join(' ') + '>'
end

Just write a code as below :

wait = Selenium::WebDriver::Wait.new(:timeout => 1000) 
wait.until do
    # you can chose any key instead of :control      
    driver.action.key_down(:control).perform.nil?
end
# to release the key :control
driver.action.key_up(:control).perform

Look the documentation of key_down :

Performs a modifier key press. Does not release the modifier key - subsequent interactions may assume it's kept pressed. Note that the modifier key is never released implicitly - either #key_up(key) or #send_keys(:null) must be called to release the modifier.

As @spickermann mentioned in the comments, the display of the rating image is controlled by the CSS classes. For example, the following has a "appx-rating-stars-45" class that creates the 4.5 star appearance:

<span id="appxListingDetailPageId:AppxLayout:j_id841:j_id842:j_id845" class="appx-rating-stars appx-rating-stars-45"></span>

To determine the star rating, we can retrieve this class and then parse the number:

star_rating_element = browser.div(class: 'appx-listing-detail').span(class: 'appx-rating-stars')
star_rating_raw = star_rating_element.class_name[/appx-rating-stars-(\d\d)/, 1]
#=> "45"
star_rating_value = star_rating_raw.to_i / 10.0
#=> 4.5

Here are some approaches you could try

1. Change your driver and us webkit. Setup webkit to not load external links. See http://robots.thoughtbot.com/speed-up-javascript-capybara-specs-by-blacklisting-urls

2. Ensure you understand and us the has_no methods if you are testing that something is not present e.g. use

   expect(page).to have_no_css '.test' # fast
   

   rather than

   expect(page).to !have_css('.test') # slow will always wait until timeout
   

3. Change the default timeout to something shorter (perhaps only for this scenario, using a tag)

As you don't give the page url,I took this Chinese language.Now I tried to find out the table column values for the second row of the first table having class name "wikitable sortable.

require 'selenium-webdriver'

driver = Selenium::WebDriver.for :firefox
driver.navigate.to "http://en.wikipedia.org/wiki/Chinese_language"

table = driver.find_element(:css,"table.wikitable") # !> assigned but unused variable - table
tb_col = driver.find_elements(:css,"tr:nth-of-type(2)>td")
tb_col[0..5].each{|e| p e.text}
# >> "汉语／漢語 or 中文\nHànyǔ or Zhōngwén"
# >> "汉语"
# >> "中文"
# >> "Wu\nNotes: includes Shanghainese"
# >> "Wu; 吴/吳"
# >> "Wúyǔ"

The way you tried table.find_elements(:css, '> tbody > tr') is not valid css syntax in selenium-webdriver.It should be table.find_elements(:css, 'tbody > tr').I would suggest you to write this way:

table = driver.find_element(:css, 'div#myelement table.myclass>tbody')
rows = table.find_elements(:css, 'tr')

or jsfiddle

table = driver.find_element(:css, 'div#myelement table.myclass')
rows = table.find_elements(:css, 'tbody:nth-of-type(1) > tr')

This is for firefox 60+ and the new marionette/geckodriver.

After fiddling a lot, this is how I got it working with a custom profile:

$ xvfb-run firefox -CreateProfile test
options = Selenium::WebDriver::Firefox::Options.new # no profile specified here
options.add_argument "--profile"
options.add_argument "/home/jenkins/.mozilla/firefox/f0jecsmr.test"
@browser = Watir::Browser.new :firefox, options: options, driver_opts: {marionette_port: 2828}, **capabilities

It is close to how documentation suggests to do with python. It took reading the source to figure out these driver_opts though (or I didn't find relevant documentation).

HTH somebody.