[spec] run the chat server as part of rspec

Rakefile

@@ -3,22 +3,4 @@ require 'rspec/core/rake_task'
 
 RSpec::Core::RakeTask.new(:spec)
 
-task :server do
-  pid = 0
-  Bundler.with_clean_env do
-    nul = RbConfig::CONFIG['host_os'] =~ /mswin|mingw/ ? 'nul' : '/dev/null'
-    pid = spawn "bundle exec puma 'spec/chat_server.ru' 2>#{nul}"
-  end
-
-  at_exit do
-    $stderr.puts "Killing pid #{pid}"
-    Process.kill('KILL', pid)
-    Process.wait(pid)
-  end
-
-  sleep 3
-end
-
-task :spec => :server
-
 task default: :spec

spec/chat_server.ru → spec/chat_server_helper.rb

@@ -10,5 +10,27 @@
 MessageBus.config[:backend] = :memory
 
 # Run the Chat Sinatra app.
-require "#{chat_example_path}/chat"
-run Chat
+require File.join(chat_example_path, 'chat')
+
+RSpec.configure do |config|
+  config.before(:suite) do
+    Thread.abort_on_exception = true
+    Chat.set :port, 9292
+
+    Thread.new { Chat.run! }
+
+    retries = 0
+    begin
+      Socket.tcp('localhost', 9292, connect_timeout: 1)
+    rescue Errno::ECONNREFUSED
+      if (retries = retries.succ) < 10
+        sleep 1
+        retry
+      end
+    end
+  end
+
+  config.after(:suite) do
+    Chat.quit!
+  end
+end

spec/spec_helper.rb

@@ -1,6 +1,7 @@
 $LOAD_PATH.unshift File.expand_path('../../lib', __FILE__)
 require 'coverage_helper'
 require 'message_bus/client'
+require 'chat_server_helper'
 
 # This file was generated by the `rspec --init` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.