Add rubocop

Author: vitalie

.rubocop.yml

@@ -0,0 +1,56 @@
+require:
+  - rubocop-performance
+  - rubocop-rake
+  - rubocop-rspec
+
+AllCops:
+  NewCops: enable
+  Exclude:
+    - vendor/**/*
+  TargetRubyVersion: 2.5
+
+Layout/LineLength:
+  Enabled: true
+  Max: 160
+
+Metrics/ModuleLength:
+  Enabled: false
+
+Metrics/ClassLength:
+  Enabled: false
+
+Metrics/MethodLength:
+  Enabled: false
+
+Metrics/BlockLength:
+  Enabled: false
+
+Metrics/AbcSize:
+  Enabled: false
+
+Metrics/CyclomaticComplexity:
+  Enabled: false
+
+Style/Documentation:
+  Enabled: false
+
+Style/ClassVars:
+  Enabled: false
+
+Bundler/OrderedGems:
+  Enabled: false
+
+RSpec/FilePath:
+  Enabled: false
+
+RSpec/MultipleExpectations:
+  Enabled: false
+
+RSpec/MultipleMemoizedHelpers:
+  Enabled: false
+
+RSpec/ExampleLength:
+  Enabled: false
+
+RSpec/AnyInstance:
+  Enabled: false

Gemfile

@@ -1,8 +1,11 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 ruby '2.5.9'
 
-gem 'travis-support',  git: 'https://github.com/travis-ci/travis-support', ref: '113cff17fe383bb72fcfae3a97a8ce98c228342f'
+gem 'travis-support', git: 'https://github.com/travis-ci/travis-support',
+                      ref: '113cff17fe383bb72fcfae3a97a8ce98c228342f'
 gem 'travis-config',   '~> 1.0.0'
 
 gem 'sidekiq',         '~> 4.0.0'
@@ -14,7 +17,7 @@ gem 'rake',            '~> 12.3.3'
 
 gem 'sentry-raven'
 
-gem 'activesupport',   '~> 4.1.11'
+gem 'activesupport', '~> 4.1.11'
 
 gem 'metriks'
 gem 'metriks-librato_metrics'
@@ -29,10 +32,16 @@ group :development, :test do
 end
 
 group :development do
-  gem 'foreman',       '~> 0.41.0'
+  gem 'foreman', '~> 0.41.0'
+  gem 'rubocop', require: false
+  gem 'rubocop-performance', require: false
+  gem 'rubocop-rake', require: false
+  gem 'rubocop-rspec', require: false
 end
 
 group :test do
   gem 'rack-test'
   gem 'timecop'
+  gem 'simplecov', require: false
+  gem 'simplecov-console', require: false
 end

Gemfile.lock

@@ -21,13 +21,16 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.1)
       tzinfo (~> 1.1)
+    ansi (1.5.0)
+    ast (2.4.2)
     atomic (1.1.99)
     avl_tree (1.2.1)
       atomic (~> 1.1)
     coderay (1.1.2)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
     diff-lcs (1.5.0)
+    docile (1.4.0)
     faraday (0.15.0)
       multipart-post (>= 1.2, < 3)
     foreman (0.41.0)
@@ -48,20 +51,28 @@ GEM
     multipart-post (2.0.0)
     mustermann (1.0.3)
     nio4r (2.5.8)
+    parallel (1.23.0)
+    parser (3.2.2.3)
+      ast (~> 2.4.1)
+      racc
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     puma (4.3.9)
       nio4r (~> 2.0)
+    racc (1.7.1)
     rack (2.2.3)
     rack-protection (2.0.3)
       rack
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
+    rainbow (3.1.1)
     rake (12.3.3)
     redis (3.3.5)
     redis-namespace (1.6.0)
       redis (>= 3.0.4)
+    regexp_parser (2.8.1)
+    rexml (3.2.6)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -75,17 +86,48 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.1)
+    rubocop (1.28.2)
+      parallel (~> 1.10)
+      parser (>= 3.1.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml
+      rubocop-ast (>= 1.17.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.17.0)
+      parser (>= 3.1.1.0)
+    rubocop-performance (1.13.3)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    rubocop-rake (0.6.0)
+      rubocop (~> 1.0)
+    rubocop-rspec (2.10.0)
+      rubocop (~> 1.19)
+    ruby-progressbar (1.13.0)
     sentry-raven (2.7.3)
       faraday (>= 0.7.6, < 1.0)
     sidekiq (4.0.2)
       concurrent-ruby (~> 1.0)
       connection_pool (~> 2.2, >= 2.2.0)
       redis (~> 3.2, >= 3.2.1)
+    simplecov (0.22.0)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-console (0.9.1)
+      ansi
+      simplecov
+      terminal-table
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.4)
     sinatra (2.0.3)
       mustermann (~> 1.0)
       rack (~> 2.0)
       rack-protection (= 2.0.3)
       tilt (~> 2.0)
+    terminal-table (3.0.2)
+      unicode-display_width (>= 1.1.1, < 3)
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
@@ -94,6 +136,7 @@ GEM
       hashr (~> 2.0.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
+    unicode-display_width (2.4.2)
     yajl-ruby (1.4.0)
 
 PLATFORMS
@@ -111,8 +154,14 @@ DEPENDENCIES
   rake (~> 12.3.3)
   redis-namespace
   rspec
+  rubocop
+  rubocop-performance
+  rubocop-rake
+  rubocop-rspec
   sentry-raven
   sidekiq (~> 4.0.0)
+  simplecov
+  simplecov-console
   sinatra (~> 2.0.3)
   timecop
   travis-config (~> 1.0.0)

config.ru

@@ -1,4 +1,6 @@
-$:.unshift File.expand_path('../lib', __FILE__)
+# frozen_string_literal: true
+
+$LOAD_PATH.unshift File.expand_path('lib', __dir__)
 
 require 'travis/listener'
 

config/puma.rb

@@ -1,16 +1,18 @@
-workers Integer(ENV['WEB_CONCURRENCY'] || 2)
-threads_count = Integer(ENV['RAILS_MAX_THREADS'] || 5)
+# frozen_string_literal: true
+
+workers Integer(ENV.fetch('WEB_CONCURRENCY', nil) || 2)
+threads_count = Integer(ENV.fetch('RAILS_MAX_THREADS', nil) || 5)
 threads threads_count, threads_count
 
 preload_app!
 
 rackup      DefaultRackup
-port        ENV['PORT']     || 3000
-environment ENV['RACK_ENV'] || 'development'
+port        ENV.fetch('PORT', nil)     || 3000
+environment ENV.fetch('RACK_ENV', nil) || 'development'
 
 on_worker_boot do
-  if reporter = Travis::Metrics.reporter
+  if (reporter = Travis::Metrics.reporter)
     reporter.stop
     reporter.start
   end
-end
+end

lib/travis/listener.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'travis/config'
 require 'travis/support'
 require 'travis/listener/app'
@@ -14,12 +16,14 @@ def config
 
   module Listener
     class Config < Travis::Config
-      define  redis:            { url: ENV.fetch('REDIS_URL', 'redis://localhost:6379'), namespace: 'sidekiq', network_timeout: 5 },
-              redis_gatekeeper: { url: ENV.fetch('REDIS_GATEKEEPER_URL', 'redis://localhost:6379'), namespace: 'sidekiq', network_timeout: 5 },
-              gator:            { queue: ENV.fetch('SIDEKIQ_GATEKEEPER_QUEUE', 'build_requests') },
-              sync:             { queue: ENV.fetch('SIDEKIQ_SYNC_QUEUE', 'sync.gh_apps') },
-              sentry:           { },
-              metrics:          { reporter: 'librato' }
+      define redis: { url: ENV.fetch('REDIS_URL', 'redis://localhost:6379'),
+                      namespace: 'sidekiq', network_timeout: 5 },
+             redis_gatekeeper: { url: ENV.fetch('REDIS_GATEKEEPER_URL', 'redis://localhost:6379'),
+                                 namespace: 'sidekiq', network_timeout: 5 },
+             gator: { queue: ENV.fetch('SIDEKIQ_GATEKEEPER_QUEUE', 'build_requests') },
+             sync: { queue: ENV.fetch('SIDEKIQ_SYNC_QUEUE', 'sync.gh_apps') },
+             sentry: {},
+             metrics: { reporter: 'librato' }
     end
 
     class << self
@@ -28,11 +32,11 @@ def setup
           require 'raven'
           ::Raven.configure do |config|
             config.dsn = Travis.config.sentry.dsn
-            config.excluded_exceptions = %w{Sinatra::NotFound}
+            config.excluded_exceptions = %w[Sinatra::NotFound]
           end
         end
 
-        Travis::Metrics.setup if ENV['RACK_ENV'] == "production"
+        Travis::Metrics.setup if ENV.fetch('RACK_ENV', nil) == 'production'
       end
 
       def disconnect