ruby on rails - Continuous Integration - Running parallel tests suites that require xvfb -
i'm having issues parallel builds running require xvfb server. using headless ruby gem, had sporadic failures when test suites both require capybara-webkit , xvfb server running in parallel. my guess both trying use same display, attempted set different display values , run them in parallel, there still failure. i tried removing headless gem , running test suite with: display=localhost:$display_num.0 xvfb-run bundle exec rake $display_num set bash variable different between 2 test suites. i error: xvfb-run: error: xvfb failed start when run in parallel. any assistance on deciphering great! here gist , need start 1 headless per process. this done features/support/javascript.rb file referenced in gist, relevant section being: # unnecessary on mac if (!os.mac? && !$headless_started) require 'headless' # allow display autopick (by default) # allow each headless destroy_at_exit (by default) # allow each process have own h...