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rails--rails/railties/test/application/server_test.rb
Edouard Chin 868866c1fd
Allow a new server Railtie block:
- This is similar to other railties blocks (such as `console`,
  `tasks` ...). The goal of this block is to allow the application
  or a railtie to load code after the server start.

  The use case can be to fire the webpack or react server in
  development or start some job worker like sidekiq or resque.

  Right now, all these tasks needs to be done in a separate
  shell and gem maintainer needs to add documentation on
  how to run their libraries if another program needs to run
  next to the Rails server.

  This feature can be used like this:

  ```ruby
    class SuperRailtie < Rails::Railtie
      server do
        WebpackServer.run
      end
    end
  ```
2020-11-02 18:11:41 +00:00

78 lines
2 KiB
Ruby

# frozen_string_literal: true
require "isolation/abstract_unit"
require "console_helpers"
require "rails/command"
require "rails/commands/server/server_command"
module ApplicationTests
class ServerTest < ActiveSupport::TestCase
include ActiveSupport::Testing::Isolation
include ConsoleHelpers
def setup
build_app
end
def teardown
teardown_app
end
test "restart rails server with custom pid file path" do
skip "PTY unavailable" unless available_pty?
File.open("#{app_path}/config/boot.rb", "w") do |f|
f.puts "ENV['BUNDLE_GEMFILE'] = '#{Bundler.default_gemfile}'"
f.puts 'require "bundler/setup"'
end
primary, replica = PTY.open
pid = nil
Bundler.with_original_env do
pid = Process.spawn("bin/rails server -b localhost -P tmp/dummy.pid", chdir: app_path, in: replica, out: replica, err: replica)
assert_output("Listening", primary)
rails("restart")
assert_output("Restarting", primary)
assert_output("Listening", primary)
ensure
kill(pid) if pid
end
end
test "run +server+ blocks after the server starts" do
skip "PTY unavailable" unless available_pty?
File.open("#{app_path}/config/boot.rb", "w") do |f|
f.puts "ENV['BUNDLE_GEMFILE'] = '#{Bundler.default_gemfile}'"
f.puts 'require "bundler/setup"'
end
add_to_config(<<~CODE)
server do
puts 'Hello world'
end
CODE
primary, replica = PTY.open
pid = nil
Bundler.with_original_env do
pid = Process.spawn("bin/rails server -b localhost", chdir: app_path, in: replica, out: primary, err: replica)
assert_output("Hello world", primary)
assert_output("Listening", primary)
ensure
kill(pid) if pid
end
end
private
def kill(pid)
Process.kill("TERM", pid)
Process.wait(pid)
rescue Errno::ESRCH
end
end
end