Make server set up and tear down automatic.

.travis.yml

@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - 2.1.7
-  - 2.2.4
-  - 2.3.0
-before_install: gem install bundler -v 1.11.2
+  - 2.1.9
+  - 2.2.5
+  - 2.3.1
+before_install: gem update bundler

README.md

@@ -48,6 +48,9 @@ MessageBus::Client.poll_interval = 15 # seconds
 After checking out the repo, run `bundle install` to install dependencies. Then, run `rake spec` to
 run the tests.
 
+If you are running Windows, Ruby is not able to kill the server process. Run it separately using
+`rake server` before running the specs.
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at

Rakefile

@@ -4,9 +4,20 @@ require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new(:spec)
 
 task :server do
+  pid = 0
   Bundler.with_clean_env do
-    sh "bundle exec puma 'spec/chat_server.ru'"
+    pid = spawn "bundle exec puma 'spec/chat_server.ru'"
   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