Rspec and Chrome/headless flag

Question

I've got headless Chrome and Chrome working for my Rspec tests. I want a flag to switch between the two so I can see the tests happen when I want and hide them when I don't. How can I implement something like:

rspec --headless

Right now I just have this secret tied to a .env var:

Capybara.javascript_driver = Rails.application.secrets.headless ? :headless_chrome : :chrome

score 3 · Answer 1 · answered Nov 19 '19 at 08:53

in your rails_helper.rb you should create a statement like that:

RSpec.configure do |config|

  config.before(:each) do
    if  ENV['HEADLESS'] == 'true'
      Capybara.current_driver = :selenium_chrome_headless
    else
      Capybara.current_driver = :selenium_chrome
    end
  end
end

then send a variable when running specs

$ HEADLESS=true rspec ./spec/features

score 1 · Accepted Answer · answered Jan 31 '19 at 21:33

1

Well, overriding the env var works so that's something.

HEADLESS=true rspec

answered Jan 31 '19 at 21:33

t56k

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Just a note for anyone who finds this now. This apparently only works with Rails >= 5.1, not on Rails 5.0. – Jack R-G Dec 01 '20 at 19:49

score 0 · Answer 3 · answered Feb 01 '19 at 15:12

Hmm, I personally use this code to register driver:

Capybara.register_driver :chrome do |app|
  capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
    chromeOptions: {
      args: [
        ('headless' if ENV.fetch('HEADLESS', '1') == '1')
      ].compact
    }   
  )

  Capybara::Selenium::Driver.new(
    app,
    browser: :chrome,
    desired_capabilities: capabilities
  )
end

then in .env you can set the variable to be HEADLESS or not by default and then if you want to overwrite it just type HEADLESS=0 rspec

Not sure how that's different to what I wrote. – t56k Feb 02 '19 at 01:31 — t56k, Feb 02 '19 at 01:31

Rspec and Chrome/headless flag

3 Answers3