diff --git a/.rspec b/.rspec
new file mode 100644
index 00000000000..4e1e0d2f722
--- /dev/null
+++ b/.rspec
@@ -0,0 +1 @@
+--color
diff --git a/plugins/github_relation/Gemfile b/plugins/github_relation/Gemfile
new file mode 100644
index 00000000000..70688299dda
--- /dev/null
+++ b/plugins/github_relation/Gemfile
@@ -0,0 +1,6 @@
+gem "octokit"
+group :development, :test do
+  gem 'rspec-rails'
+  gem 'debugger'
+  gem 'hashie'
+end
\ No newline at end of file
diff --git a/plugins/github_relation/Gemfile.lock b/plugins/github_relation/Gemfile.lock
new file mode 100644
index 00000000000..36e9e2f3a6d
--- /dev/null
+++ b/plugins/github_relation/Gemfile.lock
@@ -0,0 +1,87 @@
+GEM
+  specs:
+    actionpack (3.2.14)
+      activemodel (= 3.2.14)
+      activesupport (= 3.2.14)
+      builder (~> 3.0.0)
+      erubis (~> 2.7.0)
+      journey (~> 1.0.4)
+      rack (~> 1.4.5)
+      rack-cache (~> 1.2)
+      rack-test (~> 0.6.1)
+      sprockets (~> 2.2.1)
+    activemodel (3.2.14)
+      activesupport (= 3.2.14)
+      builder (~> 3.0.0)
+    activesupport (3.2.14)
+      i18n (~> 0.6, >= 0.6.4)
+      multi_json (~> 1.0)
+    addressable (2.3.5)
+    builder (3.0.4)
+    columnize (0.3.6)
+    debugger (1.6.3)
+      columnize (>= 0.3.1)
+      debugger-linecache (~> 1.2.0)
+      debugger-ruby_core_source (~> 1.2.4)
+    debugger-linecache (1.2.0)
+    debugger-ruby_core_source (1.2.4)
+    diff-lcs (1.2.5)
+    erubis (2.7.0)
+    faraday (0.8.8)
+      multipart-post (~> 1.2.0)
+    hashie (2.0.5)
+    hike (1.2.3)
+    i18n (0.6.4)
+    journey (1.0.4)
+    json (1.8.1)
+    multi_json (1.8.2)
+    multipart-post (1.2.0)
+    octokit (2.6.3)
+      sawyer (~> 0.5.1)
+    rack (1.4.5)
+    rack-cache (1.2)
+      rack (>= 0.4)
+    rack-ssl (1.3.3)
+      rack
+    rack-test (0.6.2)
+      rack (>= 1.0)
+    railties (3.2.14)
+      actionpack (= 3.2.14)
+      activesupport (= 3.2.14)
+      rack-ssl (~> 1.3.2)
+      rake (>= 0.8.7)
+      rdoc (~> 3.4)
+      thor (>= 0.14.6, < 2.0)
+    rake (10.1.0)
+    rdoc (3.12.2)
+      json (~> 1.4)
+    rspec-core (2.14.7)
+    rspec-expectations (2.14.4)
+      diff-lcs (>= 1.1.3, < 2.0)
+    rspec-mocks (2.14.4)
+    rspec-rails (2.14.0)
+      actionpack (>= 3.0)
+      activesupport (>= 3.0)
+      railties (>= 3.0)
+      rspec-core (~> 2.14.0)
+      rspec-expectations (~> 2.14.0)
+      rspec-mocks (~> 2.14.0)
+    sawyer (0.5.1)
+      addressable (~> 2.3.5)
+      faraday (~> 0.8, < 0.10)
+    sprockets (2.2.2)
+      hike (~> 1.2)
+      multi_json (~> 1.0)
+      rack (~> 1.0)
+      tilt (~> 1.1, != 1.3.0)
+    thor (0.18.1)
+    tilt (1.4.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  debugger
+  hashie
+  octokit
+  rspec-rails
diff --git a/plugins/github_relation/README.rdoc b/plugins/github_relation/README.rdoc
new file mode 100644
index 00000000000..0ce203c4127
--- /dev/null
+++ b/plugins/github_relation/README.rdoc
@@ -0,0 +1,3 @@
+= github_relation
+
+Description goes here
diff --git a/plugins/github_relation/app/controllers/github_project_controller.rb b/plugins/github_relation/app/controllers/github_project_controller.rb
new file mode 100644
index 00000000000..0f12ea31687
--- /dev/null
+++ b/plugins/github_relation/app/controllers/github_project_controller.rb
@@ -0,0 +1,57 @@
+class GithubProjectController < ApplicationController
+  unloadable
+
+  before_filter :find_project, :authorize
+
+  def index
+    if @github_project.present?
+      redirect_to :action => :show, id: @github_project.id, project_id: @project.id
+    else
+      redirect_to action: :new, project_id: @project.id
+    end
+  end
+
+  def show
+  end
+
+  def new
+    @github_project = GithubProject.new()
+  end
+
+  def edit
+  end
+
+  def create
+    @github_project = GithubProject.new(params[:github_project])
+    @github_project.project_id = @project.id
+
+    unless @github_project.save
+      render :action => :new
+      return
+    end
+    redirect_to :action => :show, id: @github_project.id, project_id: @project.id
+  end
+
+  def update
+    @github_project.attributes = params[:github_project]
+    @github_project.project_id = @project.id
+
+    unless @github_project.save
+      render :action => :edit
+      return
+    end
+    redirect_to :action => :show, id: @github_project.id, project_id: @project.id
+  end
+
+  def get_data
+    @github_project.get_from_github(params[:login], params[:password])
+    redirect_to :action => :show, id: @github_project.id, project_id: @project.id
+  end
+
+  private
+  def find_project
+    @project = Project.find(params[:project_id])
+    @github_project = GithubProject.where(project_id: @project.id).first
+  end
+
+end
diff --git a/plugins/github_relation/app/models/github_issue.rb b/plugins/github_relation/app/models/github_issue.rb
new file mode 100644
index 00000000000..6b9e90d70c4
--- /dev/null
+++ b/plugins/github_relation/app/models/github_issue.rb
@@ -0,0 +1,95 @@
+class GithubIssue < ActiveRecord::Base
+  attr_accessible :issue_number
+
+  has_many :github_issue_comments
+  has_many :relation_to, :class_name => 'GithubIssueRelation', :foreign_key => 'issue_from_id'
+
+  belongs_to :issue
+
+  def self.create_issues(project, list_issues)
+    created_data = list_issues.select do |issue_from_github|
+      github_issue = GithubIssue.where(issue_number: issue_from_github.number).first_or_create()
+      github_issue.update_from_github(project, issue_from_github)
+    end
+
+    GithubIssue.where(issue_number: created_data.map{|issue| issue.number})
+  end
+
+  def update_from_github(project, issue_from_github, status = :open)
+    self.build_issue if issue.nil?
+    return if issue.updated_on.present? && issue.updated_on > issue_from_github.updated_at
+
+    issue.subject = issue_from_github.title
+    issue.description = issue_from_github.body
+    issue.project = project
+    issue.tracker = Tracker.first
+    issue.author = GithubUser.user_by_github_login(issue_from_github.user)
+    if issue_from_github.assignee.present?
+      issue.assigned_to = GithubUser.user_by_github_login(issue_from_github.assignee)
+    end
+    issue.created_on = issue_from_github.created_at
+    issue.updated_on = issue_from_github.updated_at
+    case status
+      when :open
+        issue.closed_on = nil
+        issue.status = IssueStatus.where(is_closed: false).first
+      when :close
+        issue.closed_on = issue_from_github.closed_at
+        issue.status = IssueStatus.where(is_closed: true).first
+      else
+    end
+
+    Issue.skip_callback(:save, :before, :force_updated_on_change)
+    Issue.skip_callback(:save, :before, :update_closed_on)
+    issue.save!
+    Issue.set_callback(:save, :before, :force_updated_on_change)
+    Issue.set_callback(:save, :before, :update_closed_on)
+    self.save!
+    true
+  end
+
+  def self.closed_issues(list_issues)
+    github_issue_number = list_issues.map{|issue_from_github| issue_from_github.number}
+    GithubIssue.where(issue_id: self.project.issues.open.map{|issue| issue.id}).
+        where( GithubIssue.arel_table[:issue_number].not_in(github_issue_number))
+  end
+
+  def set_issue_comment_from_github(issue_comments)
+    issue_comments.each do |issue_comment_from_github|
+      issue_comment = github_issue_comments.where(issue_comment_number: issue_comment_from_github.id.to_s).first_or_create
+      issue_comment.github_issue = self
+      issue_comment.update_from_github(issue_comment_from_github)
+      issue_comment.save!
+    end
+
+    issue_comment_number = issue_comments.map {|issue_comment_from_github| issue_comment_from_github.id.to_s}
+    closed_issue_comments = github_issue_comments.where( GithubIssueComment.arel_table[:issue_comment_number].not_in(issue_comment_number))
+    closed_issue_comments.each do |issue_comment|
+      issue_comment.destroy
+    end
+  end
+
+  def create_and_delete_relation_issues
+    relation_to_issues.reject{|issue| relation_issues.any? {|relation| relation == issue}}.each do |issue|
+      relation_to.where(issue_to_id: issue.id).each do |to_issue|
+        to_issue.destroy
+      end
+    end
+
+    relation_issues.reject{|issue| relation_to_issues.any? {|relation| relation == issue}}.each do |issue|
+      relation_to.create issue_to_id: issue.id
+    end
+  end
+
+  private
+  def relation_issues
+    issue_numbers = github_issue_comments(true).inject([]) do |numbers, github_issue|
+      numbers + github_issue.relation_issues
+    end
+    GithubIssue.where(issue_number: issue_numbers.uniq)
+  end
+
+  def relation_to_issues
+    relation_to.map {|relation| relation.issue_to}
+  end
+end
diff --git a/plugins/github_relation/app/models/github_issue_comment.rb b/plugins/github_relation/app/models/github_issue_comment.rb
new file mode 100644
index 00000000000..66211743157
--- /dev/null
+++ b/plugins/github_relation/app/models/github_issue_comment.rb
@@ -0,0 +1,32 @@
+class GithubIssueComment < ActiveRecord::Base
+  attr_accessible :issue_comment_number
+
+  belongs_to :github_issue
+  belongs_to :journal
+
+  after_destroy :destroy_issue_comment
+
+  def update_from_github(issue_comment)
+    new_journal = self.journal || Journal.new(:journalized => github_issue.issue, :user => User.current)
+    new_journal.notes = issue_comment.body
+    new_journal.save!
+    self.journal = new_journal
+  end
+
+  def relation_issues
+    match_data = journal.notes.match /#(\d*)/
+
+    issue_ids = []
+    while match_data.present?
+      issue_ids << match_data[1].to_i
+      match_data = match_data.post_match.match /#(\d*)/
+    end
+
+    issue_ids
+  end
+
+  def destroy_issue_comment
+    self.journal.destroy
+  end
+
+end
diff --git a/plugins/github_relation/app/models/github_issue_relation.rb b/plugins/github_relation/app/models/github_issue_relation.rb
new file mode 100644
index 00000000000..01e8c1cc27c
--- /dev/null
+++ b/plugins/github_relation/app/models/github_issue_relation.rb
@@ -0,0 +1,24 @@
+class GithubIssueRelation < ActiveRecord::Base
+  attr_accessible :issue_from_id, :issue_to_id
+
+  belongs_to :issue_from, :class_name => 'GithubIssue', :foreign_key => 'issue_from_id'
+  belongs_to :issue_to, :class_name => 'GithubIssue', :foreign_key => 'issue_to_id'
+  belongs_to :issue_relation
+
+  after_create :create_issue_relation
+  after_destroy :destroy_issue_relation
+
+  private
+  def create_issue_relation
+    issue_relation = IssueRelation.new
+    issue_relation.issue_from = issue_from.issue
+    issue_relation.issue_to = issue_to.issue
+    issue_relation.save!
+    self.issue_relation = issue_relation
+    self.save!
+  end
+
+  def destroy_issue_relation
+    self.issue_relation.destroy
+  end
+end
diff --git a/plugins/github_relation/app/models/github_project.rb b/plugins/github_relation/app/models/github_project.rb
new file mode 100644
index 00000000000..8078d39a15c
--- /dev/null
+++ b/plugins/github_relation/app/models/github_project.rb
@@ -0,0 +1,28 @@
+class GithubProject < ActiveRecord::Base
+  attr_accessible :organization, :project_name
+
+  validates :organization, presence: true
+  validates :project_name, presence: true
+
+  belongs_to :project
+
+  def get_from_github(login, password)
+    github_relation = Github::Relation.new(login, password)
+
+    list_issues = github_relation.issues(self.organization, self.project_name)
+
+    updated_issues = GithubIssue.create_issues(self.project, list_issues)
+
+    closed_issues = GithubIssue.closed_issues(list_issues)
+    closed_issues.each do |issue|
+      github_issue = github_relation.issue(self.organization, self.project_name, issue.issue_number)
+      issue.update_from_github(self.project, github_issue, true)
+    end
+
+    (updated_issues + closed_issues).each do |issue|
+      issue_comments = github_relation.issue_comments(self.organization, self.project_name, issue.issue_number)
+      issue.set_issue_comment_from_github issue_comments
+      issue.create_and_delete_relation_issues
+    end
+  end
+end
diff --git a/plugins/github_relation/app/models/github_user.rb b/plugins/github_relation/app/models/github_user.rb
new file mode 100644
index 00000000000..fa008400fc1
--- /dev/null
+++ b/plugins/github_relation/app/models/github_user.rb
@@ -0,0 +1,33 @@
+class GithubUser < ActiveRecord::Base
+  attr_accessible :login
+
+  belongs_to :user
+
+  after_create :create_user
+
+  def self.create_users(users)
+    users.each do |user_from_github|
+      next if GithubUser.exists?(login: user_from_github.login)
+
+      GithubUser.create(login: user_from_github.login)
+    end
+  end
+
+  def self.user_by_github_login(user_by_github)
+    github_user = self.where(login: user_by_github.login).first_or_create
+    github_user.user
+  end
+
+  private
+  def create_user
+    return if User.exists?(login: self.login)
+
+    user = self.build_user
+    user.login = self.login
+    user.firstname = self.login
+    user.lastname = self.login
+    user.mail = "#{self.login}@piyo.hoge"
+    user.save!
+    self.save!
+  end
+end
diff --git a/plugins/github_relation/app/views/github_project/_form.html.erb b/plugins/github_relation/app/views/github_project/_form.html.erb
new file mode 100644
index 00000000000..0e32ab3144b
--- /dev/null
+++ b/plugins/github_relation/app/views/github_project/_form.html.erb
@@ -0,0 +1,12 @@
+<%= hidden_field_tag :project_id, @project.id %>
+<table>
+  <tr>
+    <th><%= f.label :organization %></th>
+    <td><%= f.text_field :organization %></td>
+  </tr>
+  <tr>
+    <th><%= f.label :project_name %></th>
+    <td><%= f.text_field :project_name %></td>
+  </tr>
+</table>
+<%= f.submit %>
\ No newline at end of file
diff --git a/plugins/github_relation/app/views/github_project/edit.html.erb b/plugins/github_relation/app/views/github_project/edit.html.erb
new file mode 100644
index 00000000000..1f51a2bfca8
--- /dev/null
+++ b/plugins/github_relation/app/views/github_project/edit.html.erb
@@ -0,0 +1,3 @@
+<%= form_for(@github_project,:url => {:action => :update} ) do |f| %>
+    <%= render 'form', f: f %>
+<% end %>
\ No newline at end of file
diff --git a/plugins/github_relation/app/views/github_project/index.html.erb b/plugins/github_relation/app/views/github_project/index.html.erb
new file mode 100644
index 00000000000..c9a970ec7af
--- /dev/null
+++ b/plugins/github_relation/app/views/github_project/index.html.erb
@@ -0,0 +1,15 @@
+<h2>GithubRelationController#index</h2>
+<%= form_tag(get_data_github_project_index_path, :method => :put) do %>
+  <%= hidden_field_tag :project_id, params[:project_id] %>
+  <table>
+    <tr>
+      <th><%= label_tag :login, 'login' %></th>
+      <td><%= text_field_tag :login %></td>
+    </tr>
+    <tr>
+      <th><%= label_tag :password, 'password' %></th>
+      <td><%= text_field_tag :password %></td>
+    </tr>
+  </table>
+  <%= submit_tag "get_data", {class: "btn"} %>
+<% end %>
\ No newline at end of file
diff --git a/plugins/github_relation/app/views/github_project/new.html.erb b/plugins/github_relation/app/views/github_project/new.html.erb
new file mode 100644
index 00000000000..cfb5a985953
--- /dev/null
+++ b/plugins/github_relation/app/views/github_project/new.html.erb
@@ -0,0 +1,3 @@
+<%= form_for(@github_project,:url => {:action => :create} ) do |f| %>
+  <%= render 'form', f: f %>
+<% end %>
\ No newline at end of file
diff --git a/plugins/github_relation/app/views/github_project/show.html.erb b/plugins/github_relation/app/views/github_project/show.html.erb
new file mode 100644
index 00000000000..eedf3752e44
--- /dev/null
+++ b/plugins/github_relation/app/views/github_project/show.html.erb
@@ -0,0 +1,31 @@
+<table>
+<tr>
+  <th>organization</th>
+  <td><%= @github_project.organization %></td>
+</tr>
+<tr>
+  <th>project_name</th>
+  <td><%= @github_project.project_name %></td>
+</tr>
+</table>
+<% if User.current.allowed_to?(:manage_github_relation, @project) %>
+  <%= link_to 'edit', edit_github_project_path(id:@github_project.id, project_id: @github_project.project.id), class: "icon icon-edit" %>
+<% end %>
+<br>
+<% if User.current.allowed_to?(:get_from_github, @project) %>
+  <%= form_tag(get_data_github_project_index_path, method: :put) do %>
+    <%= hidden_field_tag :project_id, @project.id %>
+    <table>
+      <tr>
+        <th><%= label_tag :login %></th>
+        <td><%= text_field_tag :login %></td>
+      </tr>
+      <tr>
+        <th><%= label_tag :password %></th>
+        <td><%= text_field_tag :password %></td>
+      </tr>
+    </table>
+
+    <%= submit_tag 'get_from_github' %>
+  <% end %>
+<% end %>
\ No newline at end of file
diff --git a/plugins/github_relation/config/locales/en.yml b/plugins/github_relation/config/locales/en.yml
new file mode 100644
index 00000000000..642b07f8211
--- /dev/null
+++ b/plugins/github_relation/config/locales/en.yml
@@ -0,0 +1,3 @@
+# English strings go here for Rails i18n
+en:
+  # my_label: "My label"
diff --git a/plugins/github_relation/config/routes.rb b/plugins/github_relation/config/routes.rb
new file mode 100644
index 00000000000..7f0eb189e21
--- /dev/null
+++ b/plugins/github_relation/config/routes.rb
@@ -0,0 +1,9 @@
+# Plugin's routes
+# See: http://guides.rubyonrails.org/routing.html
+RedmineApp::Application.routes.draw do
+  resources :github_project do
+    collection do
+      put :get_data
+    end
+  end
+end
diff --git a/plugins/github_relation/db/migrate/001_create_github_issues.rb b/plugins/github_relation/db/migrate/001_create_github_issues.rb
new file mode 100644
index 00000000000..95c4a7b9d82
--- /dev/null
+++ b/plugins/github_relation/db/migrate/001_create_github_issues.rb
@@ -0,0 +1,8 @@
+class CreateGithubIssues < ActiveRecord::Migration
+  def change
+    create_table :github_issues do |t|
+      t.column :issue_number, :integer, :default => 0
+      t.references :issue
+    end
+  end
+end
diff --git a/plugins/github_relation/db/migrate/002_create_github_users.rb b/plugins/github_relation/db/migrate/002_create_github_users.rb
new file mode 100644
index 00000000000..b2333fbbbf9
--- /dev/null
+++ b/plugins/github_relation/db/migrate/002_create_github_users.rb
@@ -0,0 +1,8 @@
+class CreateGithubUsers < ActiveRecord::Migration
+  def change
+    create_table :github_users do |t|
+      t.column :login, :string
+      t.references :user
+    end
+  end
+end
diff --git a/plugins/github_relation/db/migrate/003_create_github_projects.rb b/plugins/github_relation/db/migrate/003_create_github_projects.rb
new file mode 100644
index 00000000000..9011e5908a2
--- /dev/null
+++ b/plugins/github_relation/db/migrate/003_create_github_projects.rb
@@ -0,0 +1,9 @@
+class CreateGithubProjects < ActiveRecord::Migration
+  def change
+    create_table :github_projects do |t|
+      t.column :organization, :string
+      t.column :project_name, :string
+      t.references :project
+    end
+  end
+end
\ No newline at end of file
diff --git a/plugins/github_relation/db/migrate/004_create_github_issue_comments.rb b/plugins/github_relation/db/migrate/004_create_github_issue_comments.rb
new file mode 100644
index 00000000000..50b61923c74
--- /dev/null
+++ b/plugins/github_relation/db/migrate/004_create_github_issue_comments.rb
@@ -0,0 +1,9 @@
+class CreateGithubIssueComments < ActiveRecord::Migration
+  def change
+    create_table :github_issue_comments do |t|
+      t.column :issue_comment_number, :string
+      t.references :github_issue
+      t.references :journal
+    end
+  end
+end
\ No newline at end of file
diff --git a/plugins/github_relation/db/migrate/005_create_github_issue_relations.rb b/plugins/github_relation/db/migrate/005_create_github_issue_relations.rb
new file mode 100644
index 00000000000..1129420385e
--- /dev/null
+++ b/plugins/github_relation/db/migrate/005_create_github_issue_relations.rb
@@ -0,0 +1,9 @@
+class CreateGithubIssueRelations < ActiveRecord::Migration
+  def change
+    create_table :github_issue_relations do |t|
+      t.references :issue_relation
+      t.references :issue_from
+      t.references :issue_to
+    end
+  end
+end
\ No newline at end of file
diff --git a/plugins/github_relation/init.rb b/plugins/github_relation/init.rb
new file mode 100644
index 00000000000..27066120dc6
--- /dev/null
+++ b/plugins/github_relation/init.rb
@@ -0,0 +1,15 @@
+Redmine::Plugin.register :github_relation do
+  name 'Github Relation plugin'
+  author 'Author name'
+  description 'This is a plugin for Redmine'
+  version '0.0.1'
+  url 'http://example.com/path/to/plugin'
+  author_url 'http://example.com/about'
+
+  project_module :github_project do
+    permission :manage_github_relation, :github_project => [:new, :edit, :create, :update]
+    permission :show_github_relation, :github_project => [:index, :show]
+    permission :get_from_github, :github_project => [:get_data]
+  end
+  menu :project_menu, :github_project, {controller: :github_project, action: :index}, :caption => 'github_relation', :after => :activity, :param => :project_id
+end
diff --git a/plugins/github_relation/lib/github/relation.rb b/plugins/github_relation/lib/github/relation.rb
new file mode 100644
index 00000000000..01d56b9ef44
--- /dev/null
+++ b/plugins/github_relation/lib/github/relation.rb
@@ -0,0 +1,49 @@
+module Github
+  class Relation
+
+    def initialize(login, password)
+      @login = login
+      @password = password
+    end
+
+    def client
+      @client || Octokit::Client.new(login: @login, password: @password)
+    end
+
+    def issues(organization, project)
+      all_list_from_github(organization, project) do |repo, option|
+        client.list_issues(repo, option)
+      end
+    end
+
+    def issue_comments(organization, project, number)
+      all_list_from_github(organization, project) do |repo, option|
+        client.issue_comments(repo, number, option)
+      end
+    end
+
+    def issue(organization, project, number)
+      target = "#{organization}/#{project}"
+      client.issue(target, number)
+    end
+
+    def users(organization)
+      client.organization_members(organization)
+    rescue
+      []
+    end
+
+    private
+    def all_list_from_github(organization, project)
+      repo = "#{organization}/#{project}"
+
+      list_all = []
+      begin
+        page = (page || 0) + 1
+        list = yield repo, {page: page, per_page: 100}
+        list_all += list
+      end
+      list_all
+    end
+  end
+end
\ No newline at end of file
diff --git a/plugins/github_relation/spec/models/github_issue_spec.rb b/plugins/github_relation/spec/models/github_issue_spec.rb
new file mode 100644
index 00000000000..8ede0527f92
--- /dev/null
+++ b/plugins/github_relation/spec/models/github_issue_spec.rb
@@ -0,0 +1,178 @@
+require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
+
+describe 'github_issue' do
+  fixtures :trackers, :issue_statuses, :enumerations, :users
+
+  let!(:project){Project.create(name: 'github_test', identifier: 'github_test')}
+
+  let!(:github_users){
+    %w{user assignee}.map do |user_name|
+      user = Hashie::Mash.new
+      user.login = "#{user_name}_login"
+      user
+    end
+  }
+
+  before do
+    github_issues = 10.times.map do |index|
+      issue = Hashie::Mash.new
+      issue.number = index
+      issue.title = "title#{index}"
+      issue.body = "body#{index}"
+      issue.created_at = Time.parse("2010/01/01")
+      issue.updated_at = Time.parse("2011/01/01")
+      issue.user = github_users[0]
+      issue
+    end
+    github_issues[5].assignee = github_users[1]
+    github_issues[6].user.login = "hoge"
+
+    GithubIssue.create_issues(project, github_issues)
+  end
+
+  context "create_issues" do
+    subject{GithubIssue.scoped.order(:issue_number)}
+    its(:count){should == 10}
+    it "GithubIssues" do
+      subject.each_with_index do |github_issue, index|
+        github_issue.issue_number.should == index
+        github_issue.issue.subject.should == "title#{index}"
+        github_issue.issue.description.should == "body#{index}"
+        github_issue.issue.created_on.should == Time.parse("2010/01/01")
+        github_issue.issue.updated_on.should == Time.parse("2011/01/01")
+      end
+    end
+    it "GithubIssues User" do
+      user = GithubUser.where(login: "user_login").first.user
+
+      (0..4).each do |index|
+        subject[index].issue.author.should == user
+        subject[index].issue.assigned_to.should == nil
+      end
+      (7..9).each do |index|
+        subject[index].issue.author.should == user
+        subject[index].issue.assigned_to.should == nil
+      end
+
+      subject[5].issue.author.should == user
+      subject[5].issue.assigned_to.should == GithubUser.where(login: "assignee_login").first.user
+      subject[6].issue.author.should == GithubUser.where(login: "hoge").first.user
+      subject[6].issue.assigned_to.should == nil
+    end
+  end
+
+  context "update_closed_issues" do
+    before do
+      issue = Hashie::Mash.new
+      issue.number = 3
+      issue.title = "title3"
+      issue.body = "body3"
+      issue.created_at = Time.parse("2010/01/01")
+      issue.updated_at = Time.parse("2011/01/01")
+      issue.closed_at = Time.parse("2012/01/01")
+      issue.user = github_users[0]
+
+      github_issue = GithubIssue.where(issue_number: 3).first
+      github_issue.update_from_github(project, issue, :close)
+    end
+
+    subject{GithubIssue.scoped.order(:issue_number)}
+
+    it "GithubIssues closed_on" do
+      subject.each_with_index do |github_issue, index|
+        unless index == 3
+          github_issue.issue.closed_on.present?.should == false
+          github_issue.issue.status.is_closed?.should == false
+        end
+      end
+      subject[3].issue.closed_on.should == Time.parse("2012/01/01")
+      subject[3].issue.status.is_closed?.should == true
+    end
+
+  end
+
+  describe "issue_comments" do
+    let!(:issue){GithubIssue.first}
+    before do
+      issue_comments = 10.times.map do |index|
+        comment = Hashie::Mash.new
+        comment.id = index
+        comment.body = "body#{index} ##{index + 1} ##{index + 2}"
+        comment
+      end
+
+      issue.set_issue_comment_from_github(issue_comments)
+      issue.create_and_delete_relation_issues
+    end
+
+    subject{GithubIssueComment.scoped.order(:id)}
+
+    context "create_from_github" do
+      its(:count){should == 10}
+      it "github_comment" do
+        subject.each_with_index do |issue_comment, index|
+          issue_comment.issue_comment_number.should == index.to_s
+          issue_comment.github_issue.should == issue
+          issue_comment.journal.notes.should == "body#{index} ##{index + 1} ##{index + 2}"
+        end
+      end
+
+      it "github_relation" do
+        issue_relations = IssueRelation.all
+        issue_relations.count.should == 9
+
+        issue_relations.each_with_index do |issue_relation, index|
+          issue_relation.issue_from.should == issue.issue
+          issue_relation.issue_to.should == GithubIssue.where(issue_number: (index + 1).to_s).first.issue
+        end
+      end
+    end
+
+    context "update_and_delete_from_github" do
+      before do
+        issue_comments = 4.times.map do |index|
+          comment = Hashie::Mash.new
+          comment.id = index
+          comment.body = "body#{index + 1}"
+          comment
+        end
+        issue_comments += 4.times.map do |index|
+          comment = Hashie::Mash.new
+          comment.id = index + 4
+          comment.body = "body#{index + 5} ##{index + 6} ##{index + 7}"
+          comment
+        end
+
+        issue.set_issue_comment_from_github(issue_comments)
+        issue.create_and_delete_relation_issues
+      end
+
+      its(:count){should == 8}
+      it "github_comment" do
+        (0..3).each do |index|
+          issue_comment = subject[index]
+          issue_comment.issue_comment_number.should == index.to_s
+          issue_comment.github_issue.should == issue
+          issue_comment.journal.notes.should == "body#{index + 1}"
+        end
+        (4..7).each do |index|
+          issue_comment = subject[index]
+          issue_comment.issue_comment_number.should == index.to_s
+          issue_comment.github_issue.should == issue
+          issue_comment.journal.notes.should == "body#{index + 1} ##{index + 2} ##{index + 3}"
+        end
+
+      end
+
+      it "github_relation" do
+        issue_relations = IssueRelation.all
+        issue_relations.count.should == 4
+
+        issue_relations.each_with_index do |issue_relation, index|
+          issue_relation.issue_from.should == issue.issue
+          issue_relation.issue_to.should == GithubIssue.where(issue_number: (index + 6).to_s).first.issue
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/plugins/github_relation/spec/models/github_user_spec.rb b/plugins/github_relation/spec/models/github_user_spec.rb
new file mode 100644
index 00000000000..3041a64bed6
--- /dev/null
+++ b/plugins/github_relation/spec/models/github_user_spec.rb
@@ -0,0 +1,61 @@
+require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
+
+describe 'github_user' do
+  let!(:project){Project.create(name: 'github_test', identifier: 'github_test')}
+
+  describe "create_users" do
+    before do
+      github_users =
+          10.times.map do |index|
+            user = Hashie::Mash.new
+            user.login = "login#{index}"
+            user
+          end
+      GithubUser.create_users(github_users)
+    end
+
+    context "create" do
+      subject{GithubUser.scoped.order(:login)}
+      its(:count){should == 10}
+      it "GithubUsers" do
+        subject.each_with_index do |github_user, index|
+          github_user.login.should == "login#{index}"
+        end
+      end
+    end
+
+    context "duplicate" do
+      before do
+        user = Hashie::Mash.new
+        user.login = "login6"
+        GithubUser.create_users([user])
+      end
+
+      subject{GithubUser.scoped.order(:login)}
+      its(:count){should == 10}
+      it "GithubUsers" do
+        subject.each_with_index do |github_user, index|
+          github_user.login.should == "login#{index}"
+        end
+      end
+    end
+
+    context "add" do
+      before do
+        user = Hashie::Mash.new
+        user.login = "login10"
+        GithubUser.create_users([user])
+      end
+
+      subject{GithubUser.scoped.order(:login)}
+      its(:count){should == 11}
+      it "GithubUsers" do
+        login_idx = [0,1,10,2,3,4,5,6,7,8,9]
+
+        subject.each_with_index do |github_user, index|
+          github_user.login.should == "login#{login_idx[index]}"
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/plugins/github_relation/spec/spec_helper.rb b/plugins/github_relation/spec/spec_helper.rb
new file mode 100644
index 00000000000..e8387235334
--- /dev/null
+++ b/plugins/github_relation/spec/spec_helper.rb
@@ -0,0 +1,39 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+ENV["RAILS_ENV"] ||= 'test'
+require File.expand_path("../../../../config/environment", __FILE__)
+require 'rspec/rails'
+require 'rspec/autorun'
+require 'hashie'
+
+# Requires supporting ruby files with custom matchers and macros, etc,
+# in spec/support/ and its subdirectories.
+Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
+
+RSpec.configure do |config|
+  # ## Mock Framework
+  #
+  # If you prefer to use mocha, flexmock or RR, uncomment the appropriate line:
+  #
+  # config.mock_with :mocha
+  # config.mock_with :flexmock
+  # config.mock_with :rr
+
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  config.fixture_path = "#{::Rails.root}/test/fixtures"
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  config.use_transactional_fixtures = true
+
+  # If true, the base class of anonymous controllers will be inferred
+  # automatically. This will be the default behavior in future versions of
+  # rspec-rails.
+  config.infer_base_class_for_anonymous_controllers = false
+
+  # Run specs in random order to surface order dependencies. If you find an
+  # order dependency and want to debug it, you can fix the order by providing
+  # the seed, which is printed after each run.
+  #     --seed 1234
+  config.order = "random"
+end
diff --git a/plugins/github_relation/test/functional/github_relation_controller_test.rb b/plugins/github_relation/test/functional/github_relation_controller_test.rb
new file mode 100644
index 00000000000..474001e1726
--- /dev/null
+++ b/plugins/github_relation/test/functional/github_relation_controller_test.rb
@@ -0,0 +1,8 @@
+require File.expand_path('../../test_helper', __FILE__)
+
+class GithubRelationControllerTest < ActionController::TestCase
+  # Replace this with your real tests.
+  def test_truth
+    assert true
+  end
+end
diff --git a/plugins/github_relation/test/functional/index_controller_test.rb b/plugins/github_relation/test/functional/index_controller_test.rb
new file mode 100644
index 00000000000..606b4c89b90
--- /dev/null
+++ b/plugins/github_relation/test/functional/index_controller_test.rb
@@ -0,0 +1,8 @@
+require File.expand_path('../../test_helper', __FILE__)
+
+class IndexControllerTest < ActionController::TestCase
+  # Replace this with your real tests.
+  def test_truth
+    assert true
+  end
+end
diff --git a/plugins/github_relation/test/test_helper.rb b/plugins/github_relation/test/test_helper.rb
new file mode 100644
index 00000000000..54685d33ca5
--- /dev/null
+++ b/plugins/github_relation/test/test_helper.rb
@@ -0,0 +1,2 @@
+# Load the Redmine helper
+require File.expand_path(File.dirname(__FILE__) + '/../../../test/test_helper')