Remove unneeded code and fix offenses

app/models/project.rb

@@ -224,6 +224,7 @@ class Project < ActiveRecord::Base
 
   scope :with_project_feature, -> { joins('LEFT JOIN project_features ON projects.id = project_features.project_id') }
   scope :with_statistics, -> { includes(:statistics) }
+  scope :with_shared_runners, -> { where(shared_runners_enabled: true) }
 
   # "enabled" here means "not disabled". It includes private features!
   scope :with_feature_enabled, ->(feature) {
@@ -1096,12 +1097,20 @@ class Project < ActiveRecord::Base
     project_feature.update_attribute(:builds_access_level, ProjectFeature::ENABLED)
   end
 
+  def shared_runners_available?
+    shared_runners_enabled?
+  end
+
+  def shared_runners
+    shared_runners_available? ? Ci::Runner.shared : Ci::Runner.none
+  end
+
   def any_runners?(&block)
     if runners.active.any?(&block)
       return true
     end
 
-    shared_runners_enabled? && Ci::Runner.shared.active.any?(&block)
+    shared_runners.active.any?(&block)
   end
 
   def valid_runners_token?(token)

lib/prependable.rb

-# This module is based on: https://gist.github.com/bcardarella/5735987
-
-module Prependable
-  include ActiveSupport::Concern
-
-  def self.extended(base) #:nodoc:
-    base.instance_variable_set(:@_dependencies, [])
-  end
-
-  def prepend_features(base)
-    if base.instance_variable_defined?(:@_dependencies)
-      base.instance_variable_get(:@_dependencies) << self
-      return false
-    else
-      return false if base < self
-      super
-      base.singleton_class.send(:prepend, const_get('ClassMethods'))  if const_defined?(:ClassMethods)
-      @_dependencies.each { |dep| base.send(:include, dep) }
-      base.class_eval(&@_included_block) if instance_variable_defined?(:@_included_block)
-    end
-  end
-
-  alias_method :prepended, :included
-end

spec/lib/prependable_spec.rb

-require 'spec_helper'
-
-describe Prependable do
-  subject { FooObject }
-
-  context 'class methods' do
-    it "has a method" do
-      expect(subject).to respond_to(:class_value)
-    end
-
-    it 'can execute a method' do
-      expect(subject.class_value).to eq(20)
-    end
-  end
-
-  context 'instance methods' do
-    it "has a method" do
-      expect(subject.new).to respond_to(:value)
-    end
-
-    it 'chains a method execution' do
-      expect(subject.new.value).to eq(100)
-    end
-  end
-
-  module Foo
-    extend Prependable
-
-    prepended do
-      def self.class_value
-        20
-      end
-    end
-
-    def value
-      super * 10
-    end
-  end
-
-  class FooObject
-    prepend Foo
-
-    def value
-      10
-    end
-  end
-end