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require 'fileutils'
require 'excon'
require 'spec_helper'
describe 'Unicorn' do
before(:all) do
config_lines = File.read('config/unicorn.rb.example').split("\n")
# Remove these because they make setup harder.
config_lines = config_lines.reject do |line|
%w[
working_directory
worker_processes
listen
pid
stderr_path
stdout_path
].any? { |prefix| line.start_with?(prefix) }
end
config_lines << "working_directory '#{Rails.root}'"
# We want to have exactly 1 worker process because that makes it
# predictable which process will handle our requests.
config_lines << 'worker_processes 1'
@socket_path = File.join(Dir.pwd, 'tmp/tests/unicorn.socket')
config_lines << "listen '#{@socket_path}'"
ready_file = 'tmp/tests/unicorn-worker-ready'
FileUtils.rm_f(ready_file)
after_fork_index = config_lines.index { |l| l.start_with?('after_fork') }
config_lines.insert(after_fork_index + 1, "File.write('#{ready_file}', Process.pid)")
config_path = 'tmp/tests/unicorn.rb'
File.write(config_path, config_lines.join("\n") + "\n")
cmd = %W[unicorn -E test -c #{config_path} #{Rails.root.join('config.ru')}]
@unicorn_master_pid = spawn(*cmd)
wait_unicorn_boot!(@unicorn_master_pid, ready_file)
WebMock.allow_net_connect!
end
%w[SIGQUIT SIGTERM SIGKILL].each do |signal|
it "has a worker that self-terminates on signal #{signal}" do
response = Excon.get('unix:///unicorn_test/pid', socket: @socket_path)
expect(response.status).to eq(200)
worker_pid = response.body.to_i
expect(worker_pid).to be > 0
begin
Excon.post('unix:///unicorn_test/kill', socket: @socket_path, body: "signal=#{signal}")
rescue Excon::Error::Socket
# The connection may be closed abruptly
end
expect(pid_gone?(worker_pid)).to eq(true)
end
end
after(:all) do
WebMock.disable_net_connect!(allow_localhost: true)
Process.kill('TERM', @unicorn_master_pid)
end
def wait_unicorn_boot!(master_pid, ready_file)
# Unicorn should boot in under 60 seconds so 120 seconds seems like a good timeout.
timeout = 120
timeout.times do
return if File.exist?(ready_file)
pid = Process.waitpid(master_pid, Process::WNOHANG)
raise "unicorn failed to boot: #{$?}" unless pid.nil?
sleep 1
end
raise "unicorn boot timed out after #{timeout} seconds"
end
def pid_gone?(pid)
# Worker termination should take less than a second. That makes 10
# seconds a generous timeout.
10.times do
begin
Process.kill(0, pid)
rescue Errno::ESRCH
return true
end
sleep 1
end
false
end
end
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