I use headless in a rails project, only in CI environment.

I'm using this rake task to start/stop the server.

# lib/tasks/headless.rake
require 'headless'

namespace :headless do
  desc 'Start headless with destroy_at_exit: false on default port'
  task :start do
    Headless.new(destroy_at_exit: false).start
  end

  desc 'Stop headless'
  task :stop do
    Headless.new(reuse: true).destroy
  end
end

In spec_helper.rb

if ci?
  require 'headless'
  headless = Headless.new(reuse: true, destroy_at_exit: false)
  puts "Running in Headless mode. Display :#{headless.display}"
end

from headless.

What if I am running 4 processes in parallel?

On 20 May 2013, at 15:26, tomykaira [email protected] wrote:

I use headless in a rails project, only in CI environment.

I'm using this rake task to start/stop the server.

lib/tasks/headless.rake

require 'headless'

namespace :headless do
desc 'Start headless with destroy_at_exit: false on default port'
task :start do
Headless.new(destroy_at_exit: false).start
end

desc 'Stop headless'
task :stop do
Headless.new(reuse: true).destroy
end
end
In spec_helper.rb

if ci?
require 'headless'
headless = Headless.new(reuse: true, destroy_at_exit: false)
puts "Running in Headless mode. Display :#{headless.display}"
end
—
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from headless.

In my environment, 8 processes can run in parallel.

• rake headless:start when you start coding
• rake parallel:spec as usually, any times
• rake parallel:stop when you leave work

Please try it.

from headless.

@pusewicz - here's a complete example that seems to work well: https://gist.github.com/rosskevin/5937888

from headless.

@rosskevin Great, thanks. I'll have a look.

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I don't use CI but I have single script that gets data from CSV I checks it on UI with Watir web-driver and Headless. Can I run Watir code in parallel?

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@yuri-karpovich a single virtual display can maintain as many applications as necessary as long as you don't do any screenshots or video recording - that would get you just the topmost window.

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