class ParallelSpecs

def self.color
  ($stdout.tty? ? 'RSPEC_COLOR=1 ; export RSPEC_COLOR ;' : '')
end

def self.executable
  cmd = if File.file?("script/spec")
    "script/spec"
  elsif bundler_enabled?
    cmd = (run("bundle show rspec") =~ %r{/rspec-1[^/]+$} ? "spec" : "rspec")
    "bundle exec #{cmd}"
  else
    %w[spec rspec].detect{|cmd| system "#{cmd} --version > /dev/null 2>&1" }
  end
  cmd or raise("Can't find executables rspec or spec")
end

def self.run(cmd)
  `#{cmd}`
end

def self.run_tests(test_files, process_number, options)
  cmd = "#{color} #{executable} #{options} #{spec_opts} #{test_files*' '}"
  execute_command(cmd, process_number)[:stdout]
end

def self.spec_opts
  opts = ['spec/parallel_spec.opts', 'spec/spec.opts'].detect{|f| File.file?(f) }
  opts ? "-O #{opts}" : nil
end

def self.test_suffix
  "_spec.rb"
end