Merge branch 'mr-on-fork' of https://github.com/karlhungus/gitlabhq into karlhungus-mr-on-fork

Conflicts:
	app/views/projects/commit/show.html.haml
	app/views/projects/compare/show.html.haml
	app/views/projects/merge_requests/branch_from.js.haml

app/assets/stylesheets/common.scss

@@ -400,6 +400,18 @@ img.emoji {
   margin-bottom: 10px;
 }
 
+.label-project {
+  @include border-radius(4px);
+  padding: 2px 4px;
+  border: none;
+  font-size: 14px;
+  background: #474D57;
+  color: #fff;
+  font-family: $monospace_font;
+  text-shadow: 0 1px 1px #111;
+  font-weight: normal;
+}
+
 .group-name {
   font-size: 14px;
   line-height: 24px;

app/contexts/filter_context.rb

@@ -12,7 +12,7 @@ class FilterContext
 
   def apply_filter items
     if params[:project_id]
-      items = items.where(project_id: params[:project_id])
+      items = items.by_project(params[:project_id])
     end
 
     if params[:search].present?

app/contexts/merge_requests_load_context.rb

@@ -14,7 +14,7 @@ class MergeRequestsLoadContext < BaseContext
                      end
 
     merge_requests = merge_requests.page(params[:page]).per(20)
-    merge_requests = merge_requests.includes(:author, :project).order("created_at desc")
+    merge_requests = merge_requests.includes(:author, :source_project, :target_project).order("created_at desc")
 
     # Filter by specific assignee_id (or lack thereof)?
     if params[:assignee_id].present?

app/contexts/search_context.rb

@@ -19,7 +19,7 @@ class SearchContext
     if params[:search_code].present?
       result[:blobs] = project.repository.search_files(query, params[:repository_ref]) unless project.empty_repo?
     else
-      result[:merge_requests] = MergeRequest.where(project_id: project_ids).search(query).limit(10)
+      result[:merge_requests] = MergeRequest.in_projects(project_ids).search(query).limit(10)
       result[:issues] = Issue.where(project_id: project_ids).search(query).limit(10)
       result[:wiki_pages] = []
     end

app/controllers/projects/merge_requests_controller.rb

@@ -24,8 +24,8 @@ class Projects::MergeRequestsController < Projects::ApplicationController
       format.html
       format.js
 
-      format.diff  { render text: @merge_request.to_diff }
-      format.patch { render text: @merge_request.to_patch }
+      format.diff { render text: @merge_request.to_diff(current_user) }
+      format.patch { render text: @merge_request.to_patch(current_user) }
     end
   end
 
@@ -33,27 +33,37 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     @commit = @merge_request.last_commit
 
     @comments_allowed = @reply_allowed = true
-    @comments_target  = { noteable_type: 'MergeRequest',
-                          noteable_id: @merge_request.id }
+    @comments_target = {noteable_type: 'MergeRequest',
+                        noteable_id: @merge_request.id}
     @line_notes = @merge_request.notes.where("line_code is not null")
   end
 
   def new
-    @merge_request = @project.merge_requests.new(params[:merge_request])
+    @merge_request = MergeRequest.new(params[:merge_request])
+    @merge_request.source_project = @project unless @merge_request.source_project
+    @merge_request.target_project = @project unless @merge_request.target_project
+    @target_branches = @merge_request.target_project.nil? ? [] : @merge_request.target_project.repository.branch_names
+    @source_project = @merge_request.source_project
+    @merge_request
   end
 
   def edit
+    @source_project = @merge_request.source_project
+    @target_project = @merge_request.target_project
+    @target_branches = @merge_request.target_project.repository.branch_names
   end
 
   def create
-    @merge_request = @project.merge_requests.new(params[:merge_request])
+    @merge_request = MergeRequest.new(params[:merge_request])
     @merge_request.author = current_user
-
+    @target_branches ||= []
     if @merge_request.save
       @merge_request.reload_code
-      redirect_to [@project, @merge_request], notice: 'Merge request was successfully created.'
+      redirect_to [@merge_request.target_project, @merge_request], notice: 'Merge request was successfully created.'
     else
-      render "new"
+      @source_project = @merge_request.source_project
+      @target_project = @merge_request.target_project
+      render action: "new"
     end
   end
 
@@ -61,7 +71,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     if @merge_request.update_attributes(params[:merge_request].merge(author_id_of_changes: current_user.id))
       @merge_request.reload_code
       @merge_request.mark_as_unchecked
-      redirect_to [@project, @merge_request], notice: 'Merge request was successfully updated.'
+      redirect_to [@merge_request.target_project, @merge_request], notice: 'Merge request was successfully updated.'
     else
       render "edit"
     end
@@ -89,22 +99,35 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   end
 
   def branch_from
+    #This is always source
+    @source_project = @merge_request.nil? ? @project : @merge_request.source_project
     @commit = @repository.commit(params[:ref])
   end
 
   def branch_to
-    @commit = @repository.commit(params[:ref])
+    @target_project = selected_target_project
+    @commit = @target_project.repository.commit(params[:ref])
+  end
+
+  def update_branches
+    @target_project = selected_target_project
+    @target_branches = @target_project.repository.branch_names
+    @target_branches
   end
 
   def ci_status
     status = project.gitlab_ci_service.commit_status(merge_request.last_commit.sha)
-    response = { status: status }
+    response = {status: status}
 
     render json: response
   end
 
   protected
 
+  def selected_target_project
+    ((@project.id.to_s == params[:target_project_id]) || @project.forked_project_link.nil?) ? @project : @project.forked_project_link.forked_from_project
+  end
+
   def merge_request
     @merge_request ||= @project.merge_requests.find(params[:id])
   end
@@ -123,11 +146,11 @@ class Projects::MergeRequestsController < Projects::ApplicationController
 
   def validates_merge_request
     # Show git not found page if target branch doesn't exist
-    return invalid_mr unless @project.repository.branch_names.include?(@merge_request.target_branch)
+    return invalid_mr unless @merge_request.target_project.repository.branch_names.include?(@merge_request.target_branch)
 
     # Show git not found page if source branch doesn't exist
     # and there is no saved commits between source & target branch
-    return invalid_mr if !@project.repository.branch_names.include?(@merge_request.source_branch) && @merge_request.commits.blank?
+    return invalid_mr if !@merge_request.source_project.repository.branch_names.include?(@merge_request.source_branch) && @merge_request.commits.blank?
   end
 
   def define_show_vars

app/helpers/commits_helper.rb

@@ -108,8 +108,8 @@ module CommitsHelper
     end
   end
 
-  def commit_to_html commit
-    escape_javascript(render 'projects/commits/commit', commit: commit)
+  def commit_to_html commit, project
+    escape_javascript(render 'projects/commits/commit', commit: commit, project: project) unless commit.nil?
   end
 
   def diff_line_content(line)

app/helpers/merge_requests_helper.rb

@@ -2,14 +2,27 @@ module MergeRequestsHelper
   def new_mr_path_from_push_event(event)
     new_project_merge_request_path(
       event.project,
-      merge_request: {
-        source_branch: event.branch_name,
-        target_branch: event.project.repository.root_ref,
-        title: event.branch_name.titleize
-      }
+      new_mr_from_push_event(event, event.project)
     )
   end
 
+  def new_mr_path_for_fork_from_push_event(event)
+    new_project_merge_request_path(
+      event.project,
+      new_mr_from_push_event(event, event.project.forked_from_project)
+    )
+  end
+
+  def new_mr_from_push_event(event, target_project)
+    return :merge_request => {
+      source_project_id: event.project.id,
+      target_project_id: target_project.id,
+      source_branch: event.branch_name,
+      target_branch: target_project.repository.root_ref,
+      title: event.branch_name.titleize
+    }
+  end
+
   def mr_css_classes mr
     classes = "merge-request"
     classes << " closed" if mr.closed?
@@ -18,6 +31,14 @@ module MergeRequestsHelper
   end
 
   def ci_build_details_path merge_request
-    merge_request.project.gitlab_ci_service.build_page(merge_request.last_commit.sha)
+    merge_request.source_project.gitlab_ci_service.build_page(merge_request.last_commit.sha)
+  end
+
+  def merge_path_description(merge_request, separator)
+    if merge_request.for_fork?
+      "Project:Branches: #{@merge_request.source_project.path_with_namespace}:#{@merge_request.source_branch} #{separator} #{@merge_request.target_project.path_with_namespace}:#{@merge_request.target_branch}"
+    else
+      "Branches: #{@merge_request.source_branch} #{separator} #{@merge_request.target_branch}"
+    end
   end
 end

app/mailers/emails/merge_requests.rb

@@ -2,28 +2,65 @@ module Emails
   module MergeRequests
     def new_merge_request_email(recipient_id, merge_request_id)
       @merge_request = MergeRequest.find(merge_request_id)
-      @project = @merge_request.project
       mail(to: recipient(recipient_id), subject: subject("new merge request !#{@merge_request.id}", @merge_request.title))
     end
 
     def reassigned_merge_request_email(recipient_id, merge_request_id, previous_assignee_id)
       @merge_request = MergeRequest.find(merge_request_id)
       @previous_assignee = User.find_by_id(previous_assignee_id) if previous_assignee_id
-      @project = @merge_request.project
       mail(to: recipient(recipient_id), subject: subject("changed merge request !#{@merge_request.id}", @merge_request.title))
     end
 
     def closed_merge_request_email(recipient_id, merge_request_id, updated_by_user_id)
       @merge_request = MergeRequest.find(merge_request_id)
-      @project = @merge_request.project
       @updated_by = User.find updated_by_user_id
       mail(to: recipient(recipient_id), subject: subject("Closed merge request !#{@merge_request.id}", @merge_request.title))
     end
 
     def merged_merge_request_email(recipient_id, merge_request_id)
       @merge_request = MergeRequest.find(merge_request_id)
-      @project = @merge_request.project
       mail(to: recipient(recipient_id), subject: subject("Accepted merge request !#{@merge_request.id}", @merge_request.title))
     end
   end
+
+  # Over rides default behavour to show source/target
+  # Formats arguments into a String suitable for use as an email subject
+  #
+  # extra - Extra Strings to be inserted into the subject
+  #
+  # Examples
+  #
+  #   >> subject('Lorem ipsum')
+  #   => "GitLab Merge Request | Lorem ipsum"
+  #
+  #   # Automatically inserts Project name:
+  #   Forked MR
+  #   => source project => <Project id: 1, name: "Ruby on Rails", path: "ruby_on_rails", ...>
+  #   => target project => <Project id: 2, name: "My Ror", path: "ruby_on_rails", ...>
+  #   => source branch => source
+  #   => target branch => target
+  #   >> subject('Lorem ipsum')
+  #   => "GitLab Merge Request | Ruby on Rails:source >> My Ror:target | Lorem ipsum "
+  #
+  #   Non Forked MR
+  #   => source project => <Project id: 1, name: "Ruby on Rails", path: "ruby_on_rails", ...>
+  #   => target project => <Project id: 1, name: "Ruby on Rails", path: "ruby_on_rails", ...>
+  #   => source branch => source
+  #   => target branch => target
+  #   >> subject('Lorem ipsum')
+  #   => "GitLab Merge Request | Ruby on Rails | source >> target | Lorem ipsum "
+  #   # Accepts multiple arguments
+  #   >> subject('Lorem ipsum', 'Dolor sit amet')
+  #   => "GitLab Merge Request | Lorem ipsum | Dolor sit amet"
+  def subject(*extra)
+    subject = "GitLab Merge Request |"
+    if @merge_request.for_fork?
+      subject << "#{@merge_request.source_project.name_with_namespace}:#{merge_request.source_branch} >> #{@merge_request.target_project.name_with_namespace}:#{merge_request.target_branch}"
+    else
+      subject << "#{@merge_request.source_project.name_with_namespace} | #{merge_request.source_branch} >> #{merge_request.target_branch}"
+    end
+    subject << " | " + extra.join(' | ') if extra.present?
+    subject
+  end
+
 end

app/mailers/notify.rb

@@ -6,6 +6,7 @@ class Notify < ActionMailer::Base
 
   add_template_helper ApplicationHelper
   add_template_helper GitlabMarkdownHelper
+  add_template_helper MergeRequestsHelper
 
   default_url_options[:host]     = Gitlab.config.gitlab.host
   default_url_options[:protocol] = Gitlab.config.gitlab.protocol

app/models/concerns/issuable.rb

@@ -9,19 +9,14 @@ module Issuable
   include Mentionable
 
   included do
-    belongs_to :project
     belongs_to :author, class_name: "User"
     belongs_to :assignee, class_name: "User"
     belongs_to :milestone
     has_many :notes, as: :noteable, dependent: :destroy
 
-    validates :project, presence: true
     validates :author, presence: true
     validates :title, presence: true, length: { within: 0..255 }
 
-    scope :opened, -> { with_state(:opened) }
-    scope :closed, -> { with_state(:closed) }
-    scope :of_group, ->(group) { where(project_id: group.project_ids) }
     scope :assigned_to, ->(u) { where(assignee_id: u.id)}
     scope :recent, -> { order("created_at DESC") }
     scope :assigned, -> { where("assignee_id IS NOT NULL") }

app/models/issue.rb

@@ -17,8 +17,18 @@
 #
 
 class Issue < ActiveRecord::Base
+
   include Issuable
 
+  belongs_to :project
+  validates :project, presence: true
+
+  scope :of_group, ->(group) { where(project_id: group.project_ids) }
+  scope :of_user_team, ->(team) { where(project_id: team.project_ids, assignee_id: team.member_ids) }
+  scope :opened, -> { with_state(:opened) }
+  scope :closed, -> { with_state(:closed) }
+  scope :by_project, ->(project_id) {where(project_id:project_id)}
+
   attr_accessible :title, :assignee_id, :position, :description,
                   :milestone_id, :label_list, :author_id_of_changes,
                   :state_event

app/models/merge_request.rb

@@ -2,30 +2,35 @@
 #
 # Table name: merge_requests
 #
-#  id            :integer          not null, primary key
-#  target_branch :string(255)      not null
-#  source_branch :string(255)      not null
-#  project_id    :integer          not null
-#  author_id     :integer
-#  assignee_id   :integer
-#  title         :string(255)
-#  created_at    :datetime
-#  updated_at    :datetime
-#  st_commits    :text(2147483647)
-#  st_diffs      :text(2147483647)
-#  milestone_id  :integer
-#  state         :string(255)
-#  merge_status  :string(255)
+#  id             :integer          not null, primary key
+#  target_project_id :integer       not null
+#  target_branch  :string(255)      not null
+#  source_project_id :integer       not null
+#  source_branch  :string(255)      not null
+#  author_id      :integer
+#  assignee_id    :integer
+#  title          :string(255)
+#  created_at     :datetime
+#  updated_at     :datetime
+#  st_commits     :text(2147483647)
+#  st_diffs       :text(2147483647)
+#  milestone_id   :integer
+#  state          :string(255)
+#  merge_status   :string(255)
 #
 
 require Rails.root.join("app/models/commit")
 require Rails.root.join("lib/static_model")
 
 class MergeRequest < ActiveRecord::Base
+
   include Issuable
 
-  attr_accessible :title, :assignee_id, :target_branch, :source_branch, :milestone_id,
-                  :author_id_of_changes, :state_event
+  belongs_to :target_project, foreign_key: :target_project_id, class_name: "Project"
+  belongs_to :source_project, foreign_key: :source_project_id, class_name: "Project"
+
+  attr_accessible :title, :assignee_id, :source_project_id, :source_branch, :target_project_id, :target_branch, :milestone_id, :author_id_of_changes, :state_event
+
 
   attr_accessor :should_remove_source_branch
 
@@ -74,30 +79,37 @@ class MergeRequest < ActiveRecord::Base
   serialize :st_commits
   serialize :st_diffs
 
+  validates :source_project, presence: true
   validates :source_branch, presence: true
+  validates :target_project, presence: true
   validates :target_branch, presence: true
-  validate  :validate_branches
+  validate :validate_branches
 
+  scope :of_group, ->(group) { where("source_project_id in (:group_project_ids) OR target_project_id in (:group_project_ids)", group_project_ids: group.project_ids) }
+  scope :of_user_team, ->(team) { where("(source_project_id in (:team_project_ids) OR target_project_id in (:team_project_ids) AND assignee_id in (:team_member_ids))", team_project_ids: team.project_ids, team_member_ids: team.member_ids) }
+  scope :opened, -> { with_state(:opened) }
+  scope :closed, -> { with_state(:closed) }
   scope :merged, -> { with_state(:merged) }
-  scope :by_branch, ->(branch_name) { where("source_branch LIKE :branch OR target_branch LIKE :branch", branch: branch_name) }
+  scope :by_branch, ->(branch_name) { where("(source_branch LIKE :branch) OR (target_branch LIKE :branch)", branch: branch_name) }
   scope :cared, ->(user) { where('assignee_id = :user OR author_id = :user', user: user.id) }
   scope :by_milestone, ->(milestone) { where(milestone_id: milestone) }
-
+  scope :by_project, ->(project_id) { where("source_project_id = :project_id OR target_project_id = :project_id", project_id: project_id) }
+  scope :in_projects, ->(project_ids) { where("source_project_id in (:project_ids) OR target_project_id in (:project_ids)", project_ids: project_ids) }
   # Closed scope for merge request should return
   # both merged and closed mr's
   scope :closed, -> { with_states(:closed, :merged) }
 
   def validate_branches
-    if target_branch == source_branch
-      errors.add :branch_conflict, "You can not use same branch for source and target branches"
+    if target_project==source_project && target_branch == source_branch
+      errors.add :branch_conflict, "You can not use same project/branch for source and target"
     end
 
     if opened? || reopened?
-      similar_mrs = self.project.merge_requests.where(source_branch: source_branch, target_branch: target_branch).opened
+      similar_mrs = self.target_project.merge_requests.where(source_branch: source_branch, target_branch: target_branch, source_project_id: source_project.id).opened
       similar_mrs = similar_mrs.where('id not in (?)', self.id) if self.id
 
       if similar_mrs.any?
-        errors.add :base, "There is already an open merge request for this branches"
+        errors.add :base, "Cannot Create: This merge request already exists: #{similar_mrs.pluck(:title)}"
       end
     end
   end
@@ -137,7 +149,13 @@ class MergeRequest < ActiveRecord::Base
   end
 
   def unmerged_diffs
-    project.repository.diffs_between(source_branch, target_branch)
+    if for_fork?
+      diffs = Gitlab::Satellite::MergeAction.new(author, self).diffs_between_satellite
+    else
+      diffs = target_project.repository.diffs_between(source_branch, target_branch)
+    end
+    diffs ||= []
+    diffs
   end
 
   def last_commit
@@ -145,11 +163,11 @@ class MergeRequest < ActiveRecord::Base
   end
 
   def merge_event
-    self.project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::MERGED).last
+    self.target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::MERGED).last
   end
 
   def closed_event
-    self.project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::CLOSED).last
+    self.target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::CLOSED).last
   end
 
   def commits
@@ -165,15 +183,23 @@ class MergeRequest < ActiveRecord::Base
     if opened? && unmerged_commits.any?
       self.st_commits = dump_commits(unmerged_commits)
       save
+
     end
     commits
   end
 
   def unmerged_commits
-    self.project.repository.
-      commits_between(self.target_branch, self.source_branch).
+    if for_fork?
+      commits = Gitlab::Satellite::MergeAction.new(self.author, self).commits_between
+    else
+      commits = target_project.repository.commits_between(self.target_branch, self.source_branch)
+    end
+    if commits.present?
+      commits = Commit.decorate(commits).
       sort_by(&:created_at).
       reverse
+    end
+    commits
   end
 
   def merge!(user_id)
@@ -199,21 +225,29 @@ class MergeRequest < ActiveRecord::Base
   # Returns the raw diff for this merge request
   #
   # see "git diff"
-  def to_diff
-    project.repo.git.native(:diff, {timeout: 30, raise: true}, "#{target_branch}...#{source_branch}")
+  def to_diff(current_user)
+    Gitlab::Satellite::MergeAction.new(current_user, self).diff_in_satellite
   end
 
   # Returns the commit as a series of email patches.
   #
   # see "git format-patch"
-  def to_patch
-    project.repo.git.format_patch({timeout: 30, raise: true, stdout: true}, "#{target_branch}..#{source_branch}")
+  def to_patch(current_user)
+    Gitlab::Satellite::MergeAction.new(current_user, self).format_patch
   end
 
   def last_commit_short_sha
     @last_commit_short_sha ||= last_commit.sha[0..10]
   end
 
+  def for_fork?
+    target_project != source_project
+  end
+
+  def disallow_source_branch_removal?
+    (source_project.root_ref? source_branch) || for_fork?
+  end
+
   private
 
   def dump_commits(commits)

app/models/note.rb

@@ -42,18 +42,18 @@ class Note < ActiveRecord::Base
 
   # Scopes
   scope :for_commit_id, ->(commit_id) { where(noteable_type: "Commit", commit_id: commit_id) }
-  scope :inline, -> { where("line_code IS NOT NULL") }
-  scope :not_inline, -> { where(line_code: [nil, '']) }
+  scope :inline, ->{ where("line_code IS NOT NULL") }
+  scope :not_inline, ->{ where(line_code: [nil, '']) }
 
   scope :common, ->{ where(noteable_type: ["", nil]) }
   scope :fresh, ->{ order("created_at ASC, id ASC") }
   scope :inc_author_project, ->{ includes(:project, :author) }
   scope :inc_author, ->{ includes(:author) }
 
-  def self.create_status_change_note(noteable, author, status)
+  def self.create_status_change_note(noteable, project, author, status)
     create({
       noteable: noteable,
-      project: noteable.project,
+      project: project,
       author: author,
       note: "_Status changed to #{status}_"
     }, without_protection: true)
@@ -62,7 +62,7 @@ class Note < ActiveRecord::Base
   def commit_author
     @commit_author ||=
       project.users.find_by_email(noteable.author_email) ||
-      project.users.find_by_name(noteable.author_name)
+        project.users.find_by_name(noteable.author_name)
   rescue
     nil
   end

app/models/project.rb

@@ -53,7 +53,7 @@ class Project < ActiveRecord::Base
 
   has_many :services,           dependent: :destroy
   has_many :events,             dependent: :destroy
-  has_many :merge_requests,     dependent: :destroy
+  has_many :merge_requests,     dependent: :destroy, foreign_key: "target_project_id"
   has_many :issues,             dependent: :destroy, order: "state DESC, created_at DESC"
   has_many :milestones,         dependent: :destroy
   has_many :notes,              dependent: :destroy

app/observers/activity_observer.rb

 class ActivityObserver < BaseObserver
-  observe :issue, :merge_request, :note, :milestone
+  observe :issue, :note, :milestone
 
   def after_create(record)
     event_author_id = record.author_id
@@ -13,47 +13,27 @@ class ActivityObserver < BaseObserver
     end
 
     if event_author_id
-      Event.create(
-        project: record.project,
-        target_id: record.id,
-        target_type: record.class.name,
-        action: Event.determine_action(record),
-        author_id: event_author_id
-      )
+      create_event(record, Event.determine_action(record))
     end
   end
 
   def after_close(record, transition)
-    Event.create(
-      project: record.project,
-      target_id: record.id,
-      target_type: record.class.name,
-      action: Event::CLOSED,
-      author_id: record.author_id_of_changes
-    )
+    create_event(record, Event::CLOSED)
   end
 
   def after_reopen(record, transition)
-    Event.create(
-      project: record.project,
-      target_id: record.id,
-      target_type: record.class.name,
-      action: Event::REOPENED,
-      author_id: record.author_id_of_changes
-    )
+    create_event(record, Event::REOPENED)
   end
 
-  def after_merge(record, transition)
-    # Since MR can be merged via sidekiq
-    # to prevent event duplication do this check
-    return true if record.merge_event
+  protected
 
+  def create_event(record, status)
     Event.create(
-      project: record.project,
-      target_id: record.id,
-      target_type: record.class.name,
-      action: Event::MERGED,
-      author_id: record.author_id_of_changes
+        project: record.project,
+        target_id: record.id,
+        target_type: record.class.name,
+        action: status,
+        author_id: record.author_id
     )
   end
 end

app/observers/issue_observer.rb

@@ -23,6 +23,6 @@ class IssueObserver < BaseObserver
 
   # Create issue note with service comment like 'Status changed to closed'
   def create_note(issue)
-    Note.create_status_change_note(issue, current_user, issue.state)
+    Note.create_status_change_note(issue, issue.project, current_user, issue.state)
   end
 end

app/observers/merge_request_observer.rb

-class MergeRequestObserver < BaseObserver
+class MergeRequestObserver < ActivityObserver
+  observe :merge_request
+
   def after_create(merge_request)
+    if merge_request.author_id
+      create_event(merge_request, Event.determine_action(merge_request))
+    end
+
     notification.new_merge_request(merge_request, current_user)
   end
 
   def after_close(merge_request, transition)
-    Note.create_status_change_note(merge_request, current_user, merge_request.state)
+    create_event(merge_request, Event::CLOSED)
+    Note.create_status_change_note(merge_request, merge_request.target_project, current_user, merge_request.state)
 
     notification.close_mr(merge_request, current_user)
   end
 
   def after_merge(merge_request, transition)
     notification.merge_mr(merge_request)
+    # Since MR can be merged via sidekiq
+    # to prevent event duplication do this check
+    return true if merge_request.merge_event
+
+    Event.create(
+      project: merge_request.target_project,
+      target_id: merge_request.id,
+      target_type: merge_request.class.name,
+      action: Event::MERGED,
+      author_id: merge_request.author_id_of_changes
+    )
   end
 
   def after_reopen(merge_request, transition)
-    Note.create_status_change_note(merge_request, current_user, merge_request.state)
+    create_event(merge_request, Event::REOPENED)
+    Note.create_status_change_note(merge_request, merge_request.target_project, current_user, merge_request.state)
   end
 
   def after_update(merge_request)
     notification.reassigned_merge_request(merge_request, current_user) if merge_request.is_being_reassigned?
   end
+
+  def create_event(record, status)
+    Event.create(
+      project: record.target_project,
+      target_id: record.id,
+      target_type: record.class.name,
+      action: status,
+      author_id: record.author_id
+    )
+  end
+
 end

app/services/notification_service.rb

@@ -23,7 +23,7 @@ class NotificationService
   #  * project team members with notification level higher then Participating
   #
   def new_issue(issue, current_user)
-    new_resource_email(issue, 'new_issue_email')
+    new_resource_email(issue, issue.project, 'new_issue_email')
   end
 
   # When we close an issue we should send next emails:
@@ -33,7 +33,7 @@ class NotificationService
   #  * project team members with notification level higher then Participating
   #
   def close_issue(issue, current_user)
-    close_resource_email(issue, current_user, 'closed_issue_email')
+    close_resource_email(issue, issue.project, current_user, 'closed_issue_email')
   end
 
   # When we reassign an issue we should send next emails:
@@ -42,7 +42,7 @@ class NotificationService
   #  * issue new assignee if his notification level is not Disabled
   #
   def reassigned_issue(issue, current_user)
-    reassign_resource_email(issue, current_user, 'reassigned_issue_email')
+    reassign_resource_email(issue, issue.project, current_user, 'reassigned_issue_email')
   end
 
 
@@ -51,7 +51,7 @@ class NotificationService
   #  * mr assignee if his notification level is not Disabled
   #
   def new_merge_request(merge_request, current_user)
-    new_resource_email(merge_request, 'new_merge_request_email')
+    new_resource_email(merge_request, merge_request.target_project, 'new_merge_request_email')
   end
 
   # When we reassign a merge_request we should send next emails:
@@ -60,7 +60,7 @@ class NotificationService
   #  * merge_request assignee if his notification level is not Disabled
   #
   def reassigned_merge_request(merge_request, current_user)
-    reassign_resource_email(merge_request, current_user, 'reassigned_merge_request_email')
+    reassign_resource_email(merge_request, merge_request.target_project, current_user, 'reassigned_merge_request_email')
   end
 
   # When we close a merge request we should send next emails:
@@ -70,7 +70,7 @@ class NotificationService
   #  * project team members with notification level higher then Participating
   #
   def close_mr(merge_request, current_user)
-    close_resource_email(merge_request, current_user, 'closed_merge_request_email')
+    close_resource_email(merge_request, merge_request.target_project, current_user, 'closed_merge_request_email')
   end
 
   # When we merge a merge request we should send next emails:
@@ -80,8 +80,8 @@ class NotificationService
   #  * project team members with notification level higher then Participating
   #
   def merge_mr(merge_request)
-    recipients = reject_muted_users([merge_request.author, merge_request.assignee], merge_request.project)
-    recipients = recipients.concat(project_watchers(merge_request.project)).uniq
+    recipients = reject_muted_users([merge_request.author, merge_request.assignee], merge_request.target_project)
+    recipients = recipients.concat(project_watchers(merge_request.target_project)).uniq
 
     recipients.each do |recipient|
       mailer.merged_merge_request_email(recipient.id, merge_request.id)
@@ -191,14 +191,14 @@ class NotificationService
     end
   end
 
-  def new_resource_email(target, method)
+  def new_resource_email(target, project, method)
     if target.respond_to?(:participants)
       recipients = target.participants
     else
       recipients = []
     end
-    recipients = reject_muted_users(recipients, target.project)
-    recipients = recipients.concat(project_watchers(target.project)).uniq
+    recipients = reject_muted_users(recipients, project)
+    recipients = recipients.concat(project_watchers(project)).uniq
     recipients.delete(target.author)
 
     recipients.each do |recipient|
@@ -206,9 +206,9 @@ class NotificationService
     end
   end
 
-  def close_resource_email(target, current_user, method)
-    recipients = reject_muted_users([target.author, target.assignee], target.project)
-    recipients = recipients.concat(project_watchers(target.project)).uniq
+  def close_resource_email(target, project, current_user, method)
+    recipients = reject_muted_users([target.author, target.assignee], project)
+    recipients = recipients.concat(project_watchers(project)).uniq
     recipients.delete(current_user)
 
     recipients.each do |recipient|
@@ -216,14 +216,14 @@ class NotificationService
     end
   end
 
-  def reassign_resource_email(target, current_user, method)
+  def reassign_resource_email(target, project, current_user, method)
     recipients = User.where(id: [target.assignee_id, target.assignee_id_was])
 
     # Add watchers to email list
-    recipients = recipients.concat(project_watchers(target.project))
+    recipients = recipients.concat(project_watchers(project))
 
     # reject users with disabled notifications
-    recipients = reject_muted_users(recipients, target.project)
+    recipients = reject_muted_users(recipients, project)
 
     # Reject me from recipients if I reassign an item
     recipients.delete(current_user)

app/views/events/_event_last_push.html.haml

@@ -9,6 +9,9 @@
       = time_ago_in_words(event.created_at)
       ago.
     .pull-right
-      = link_to new_mr_path_from_push_event(event), title: "New Merge Request", class: "btn btn-create btn-small" do
+      = link_to new_mr_path_from_push_event(event), title: "New Merge Request", class: "btn btn-new-mr" do
         Create Merge Request
+      - if !event.project.nil? && event.project.forked?
+        = link_to new_mr_path_for_fork_from_push_event(event), title: "New Merge Request", class: "btn btn-create btn-small" do
+          Create Merge Request on fork
   %hr

app/views/notify/closed_merge_request_email.html.haml

 %p
   = "Merge Request #{@merge_request.id} was closed by #{@updated_by.name}"
 %p
-  = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.project, @merge_request)
+  = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.target_project, @merge_request)
 %p
-  Branches: #{@merge_request.source_branch} → #{@merge_request.target_branch}
+  != merge_path_description(@merge_request, '→')
 %p
   Assignee: #{@merge_request.author_name} → #{@merge_request.assignee_name}
 

app/views/notify/closed_merge_request_email.text.haml

 = "Merge Request #{@merge_request.id} was closed by #{@updated_by.name}"
 
-Merge Request url: #{project_merge_request_url(@merge_request.project, @merge_request)}
+Merge Request url: #{project_merge_request_url(@merge_request.target_project, @merge_request)}
 
-Branches: #{@merge_request.source_branch} - #{@merge_request.target_branch}
+= merge_path_description(@merge_request, 'to')
 
 Author: #{@merge_request.author_name}
 Assignee: #{@merge_request.assignee_name}

app/views/notify/merged_merge_request_email.html.haml

 %p
   = "Merge Request #{@merge_request.id} was merged"
 %p
-  = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.project, @merge_request)
+  = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.target_project, @merge_request)
 %p
-  Branches: #{@merge_request.source_branch} → #{@merge_request.target_branch}
+  != merge_path_description(@merge_request, '→')
 %p
   Assignee: #{@merge_request.author_name} → #{@merge_request.assignee_name}
 

app/views/notify/merged_merge_request_email.text.haml

 = "Merge Request #{@merge_request.id} was merged"
 
-Merge Request Url: #{project_merge_request_url(@merge_request.project, @merge_request)}
+Merge Request Url: #{project_merge_request_url(@merge_request.target_project, @merge_request)}
 
-Branches: #{@merge_request.source_branch} - #{@merge_request.target_branch}
+= merge_path_description(@merge_request, 'to')
 
 Author: #{@merge_request.author_name}
 Assignee: #{@merge_request.assignee_name}

app/views/notify/new_merge_request_email.html.haml

 %p
   = "New Merge Request !#{@merge_request.id}"
 %p
-  = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.project, @merge_request)
+  = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.target_project, @merge_request)
 %p
-  Branches: #{@merge_request.source_branch} → #{@merge_request.target_branch}
+  != merge_path_description(@merge_request, '→')
 %p
   Assignee: #{@merge_request.author_name} → #{@merge_request.assignee_name}
 

app/views/notify/new_merge_request_email.text.erb

 New Merge Request <%= @merge_request.id %>
 
-<%= url_for(project_merge_request_url(@merge_request.project, @merge_request)) %>
-          
+<%= url_for(project_merge_request_url(@merge_request.target_project, @merge_request)) %>
 
-Branches: <%= @merge_request.source_branch %> to <%= @merge_request.target_branch %>
+<%= merge_path_description(@merge_request, 'to') %>
 Author:   <%= @merge_request.author_name %>
 Asignee:  <%= @merge_request.assignee_name %>
 

app/views/notify/note_merge_request_email.html.haml

 %p
   - if @note.for_diff_line?
-    = link_to "New comment on diff", diffs_project_merge_request_url(@merge_request.project, @merge_request, anchor: "note_#{@note.id}")
+    = link_to "New comment on diff", diffs_project_merge_request_url(@merge_request.target_project, @merge_request, anchor: "note_#{@note.id}")
   - else
-    = link_to "New comment", project_merge_request_url(@merge_request.project, @merge_request, anchor: "note_#{@note.id}")
+    = link_to "New comment", project_merge_request_url(@merge_request.target_project, @merge_request, anchor: "note_#{@note.id}")
   for Merge Request ##{@merge_request.id}
   %cite "#{truncate(@merge_request.title, length: 20)}"
 = render 'note_message'

app/views/notify/note_merge_request_email.text.erb

 New comment for Merge Request <%= @merge_request.id %>
 
-<%= url_for(project_merge_request_url(@merge_request.project, @merge_request, anchor: "note_#{@note.id}")) %>
+<%= url_for(project_merge_request_url(@merge_request.target_project, @merge_request, anchor: "note_#{@note.id}")) %>
       
 
 <%= @note.author_name %>

app/views/notify/reassigned_merge_request_email.html.haml

 %p
   = "Reassigned Merge Request !#{@merge_request.id}"
-  = link_to_gfm truncate(@merge_request.title, length: 30), project_merge_request_url(@merge_request.project, @merge_request)
+  = link_to_gfm truncate(@merge_request.title, length: 30), project_merge_request_url(@merge_request.target_project, @merge_request)
 %p
   Assignee changed
   - if @previous_assignee

app/views/notify/reassigned_merge_request_email.text.erb

 Reassigned Merge Request <%= @merge_request.id %>
 
-<%= url_for(project_merge_request_url(@merge_request.project, @merge_request)) %>
+<%= url_for(project_merge_request_url(@merge_request.target_project, @merge_request)) %>
           
 
 Assignee changed <%= "from #{@previous_assignee.name}" if @previous_assignee %> to <%= @merge_request.assignee_name %>

app/views/projects/commit/show.html.haml

 = render "commit_box"
-= render "projects/commits/diffs", diffs: @commit.diffs
+= render "projects/commits/diffs", diffs: @commit.diffs, project: @project
 = render "projects/notes/notes_with_form"

app/views/projects/commits/_commit.html.haml

 %li.commit
   .browse_code_link_holder
     %p
-      %strong= link_to "Browse Code »", project_tree_path(@project, commit), class: "right"
+      %strong= link_to "Browse Code »", project_tree_path(project, commit), class: "right"
   %p
-    = link_to commit.short_id(8), project_commit_path(@project, commit), class: "commit_short_id"
+    = link_to commit.short_id(8), project_commit_path(project, commit), class: "commit_short_id"
     = commit_author_link(commit, avatar: true, size: 24)
      
-    = link_to_gfm truncate(commit.title, length: 70), project_commit_path(@project, commit.id), class: "row_title"
+    = link_to_gfm truncate(commit.title, length: 70), project_commit_path(project, commit.id), class: "row_title"
 
     %time.committed_ago{ datetime: commit.committed_date, title: commit.committed_date.stamp("Aug 21, 2011 9:23pm") }
       = time_ago_in_words(commit.committed_date)
@@ -14,7 +14,7 @@
        
 
     %span.notes_count
-      - notes = @project.notes.for_commit_id(commit.id)
+      - notes = project.notes.for_commit_id(commit.id)
       - if notes.any?
         %span.badge.badge-info
           %i.icon-comment

app/views/projects/commits/_commits.html.haml

@@ -3,7 +3,6 @@
     .title
       %i.icon-calendar
       %span= day.stamp("28 Aug, 2010")
-
       .pull-right
         %small= pluralize(commits.count, 'commit')
-    %ul.well-list= render commits
+    %ul.well-list= render commits, project: @project

app/views/projects/commits/_diffs.html.haml

@@ -5,7 +5,7 @@
     %p To prevent performance issue we rejected diff information.
     %p
       But if you still want to see diff
-      = link_to "click this link", project_commit_path(@project, @commit, force_show_diff: true), class: "underlined_link"
+      = link_to "click this link", project_commit_path(project, @commit, force_show_diff: true), class: "underlined_link"
 
 %p.commit-stat-summary
   Showing
@@ -23,8 +23,8 @@
   - unless @suppress_diff
     - diffs.each_with_index do |diff, i|
       - next if diff.diff.empty?
-      - file = Gitlab::Git::Blob.new(@repository, @commit.id, @ref, diff.new_path)
-      - file = Gitlab::Git::Blob.new(@repository, @commit.parent_id, @ref, diff.old_path) unless file.exists?
+      - file = Gitlab::Git::Blob.new(project.repository, @commit.id, @ref, diff.new_path)
+      - file = Gitlab::Git::Blob.new(project.repository, @commit.parent_id, @ref, diff.old_path) unless file.exists?
       - next unless file.exists?
       .file{id: "diff-#{i}"}
         .header
@@ -32,7 +32,7 @@
             %span= diff.old_path
 
             - if @commit.parent_ids.present?
-              = link_to project_blob_path(@project, tree_join(@commit.parent_id, diff.new_path)), {:class => 'btn btn-tiny pull-right view-file'} do
+              = link_to project_blob_path(project, tree_join(@commit.parent_id, diff.new_path)), {:class => 'btn btn-tiny pull-right view-file'} do
                 View file @
                 %span.commit-short-id= @commit.short_id(6)
           - else
@@ -40,7 +40,7 @@
             - if diff.a_mode && diff.b_mode && diff.a_mode != diff.b_mode
               %span.file-mode= "#{diff.a_mode} → #{diff.b_mode}"
 
-            = link_to project_blob_path(@project, tree_join(@commit.id, diff.new_path)), {:class => 'btn btn-tiny pull-right view-file'} do
+            = link_to project_blob_path(project, tree_join(@commit.id, diff.new_path)), {:class => 'btn btn-tiny pull-right view-file'} do
               View file @
               %span.commit-short-id= @commit.short_id(6)
 
@@ -50,7 +50,7 @@
           - if file.text?
             = render "projects/commits/text_file", diff: diff, index: i
           - elsif file.image?
-            - old_file = Gitlab::Git::Blob.new(@repository, @commit.parent_id, @ref, diff.old_path) if @commit.parent_id
+            - old_file = Gitlab::Git::Blob.new(project.repository, @commit.parent_id, @ref, diff.old_path) if @commit.parent_id
             = render "projects/commits/image", diff: diff, old_file: old_file, file: file, index: i
           - else
             %p.nothing_here_message No preview for this file type

app/views/projects/compare/show.html.haml

@@ -15,8 +15,8 @@
   %div.ui-box
     .title
       Commits (#{@commits.count})
-    %ul.well-list= render Commit.decorate(@commits)
+    %ul.well-list= render Commit.decorate(@commits), project: @project
 
   - unless @diffs.empty?
     %h4 Diff
-    = render "projects/commits/diffs", diffs: @diffs
+    = render "projects/commits/diffs", diffs: @diffs, project: @project

app/views/projects/merge_requests/_form.html.haml

@@ -12,18 +12,20 @@
   .row
     .span5
       .light-well
-        %h5.cgray From (Head Branch)
-        = f.select(:source_branch, @repository.branch_names, { include_blank: "Select branch" }, {class: 'chosen span4'})
+        %h5.cgray From
+        .padded= f.select(:source_project_id,[[@merge_request.source_project.path_with_namespace,@merge_request.source_project.id]] , {}, {class: 'source_project chosen span4'})
+        .padded= f.select(:source_branch, @merge_request.source_project.repository.branch_names, { include_blank: "Select branch" }, {class: 'source_branch chosen span4'})
         .mr_source_commit.prepend-top-10
-
     .span2
       %h1.merge-request-angle
         %i.icon-angle-right
     .span5
       .light-well
-        %h5.cgray To (Base Branch)
-        = f.select(:target_branch, @repository.branch_names, { include_blank: "Select branch" }, {class: 'chosen span4'})
-        .mr_target_commit.prepend-top-10
+        %h5.cgray To
+        - projects =  @project.forked_from_project.nil? ? [@project] : [ @project,@project.forked_from_project]
+        .padded= f.select(:target_project_id, projects.map { |proj| [proj.path_with_namespace,proj.id] }, {include_blank: "Select Target Project" }, {class: 'target_project chosen span4'})
+        .padded= f.select(:target_branch, @target_branches, { include_blank: "Select branch" }, {class: 'target_branch chosen span4'})
+      .mr_target_commit.prepend-top-10
 
   %hr
 
@@ -47,32 +49,34 @@
           Milestone
         .input= f.select(:milestone_id, @project.milestones.active.all.map {|p| [ p.title, p.id ] }, { include_blank: "Select milestone" }, {class: 'chosen'})
 
-
   .form-actions
     - if @merge_request.new_record?
       = f.submit 'Submit merge request', class: "btn btn-create"
     -else
       = f.submit 'Save changes', class: "btn btn-save"
     - if @merge_request.new_record?
-      = link_to project_merge_requests_path(@project), class: "btn btn-cancel" do
+      = link_to project_merge_requests_path(@source_project), class: "btn btn-cancel" do
         Cancel
     - else
-      = link_to project_merge_request_path(@project, @merge_request), class: "btn btn-cancel" do
+      = link_to project_merge_request_path(@target_project, @merge_request), class: "btn btn-cancel" do
         Cancel
 
 :javascript
   disableButtonIfEmptyField("#merge_request_title", ".btn-save");
 
   var source_branch = $("#merge_request_source_branch")
-    , target_branch = $("#merge_request_target_branch");
+    , target_branch = $("#merge_request_target_branch")
+    , target_project = $("#merge_request_target_project_id");
 
-  $.get("#{branch_from_project_merge_requests_path(@project)}", {ref: source_branch.val() });
-  $.get("#{branch_to_project_merge_requests_path(@project)}", {ref: target_branch.val() });
+  $.get("#{branch_from_project_merge_requests_path(@source_project)}", {ref: source_branch.val() });
+  $.get("#{branch_to_project_merge_requests_path(@source_project)}", {target_project_id: target_project.val(),ref: target_branch.val() });
 
-  source_branch.live("change", function() {
-    $.get("#{branch_from_project_merge_requests_path(@project)}", {ref: $(this).val() });
+  target_project.on("change", function() {
+    $.get("#{update_branches_project_merge_requests_path(@source_project)}", {target_project_id:  $(this).val() });
   });
-
-  target_branch.live("change", function() {
-    $.get("#{branch_to_project_merge_requests_path(@project)}", {ref: $(this).val() });
+  source_branch.on("change", function() {
+    $.get("#{branch_from_project_merge_requests_path(@source_project)}", {ref: $(this).val() });
+  });
+  target_branch.on("change", function() {
+    $.get("#{branch_to_project_merge_requests_path(@source_project)}", {target_project_id: target_project.val(),ref: $(this).val() });
   });

app/views/projects/merge_requests/_merge_request.html.haml

 %li{ class: mr_css_classes(merge_request) }
   .merge-request-title
     %span.light= "##{merge_request.id}"
-    = link_to_gfm truncate(merge_request.title, length: 80), project_merge_request_path(merge_request.project, merge_request), class: "row_title"
+    = link_to_gfm truncate(merge_request.title, length: 80), project_merge_request_path(merge_request.target_project, merge_request), class: "row_title"
     - if merge_request.merged?
       %small.pull-right
         %i.icon-ok
         = "MERGED"
     - else
       %span.pull-right
-        %i.icon-angle-right
-        = merge_request.target_branch
+        - if merge_request.for_fork?
+          = "#{merge_request.source_project.path_with_namespace}/#{merge_request.source_branch}"
+          %i.icon-angle-right
+          = "#{merge_request.target_project.path_with_namespace}/#{merge_request.target_branch}"
+        - else
+          = "#{merge_request.source_branch}"
+          %i.icon-angle-right
+          = "#{merge_request.target_branch}"
   .merge-request-info
     - if merge_request.author
-      authored by #{link_to_member(@project, merge_request.author)}
+      authored by #{link_to_member(merge_request.source_project, merge_request.author)}
     - if merge_request.votes_count > 0
       = render 'votes/votes_inline', votable: merge_request
     - if merge_request.notes.any?

app/views/projects/merge_requests/branch_from.js.haml

 :plain
-  $(".mr_source_commit").html("#{commit_to_html(@commit)}");
+  $(".mr_source_commit").html("#{commit_to_html(@commit, @source_project)}");
   var mrTitle = $('#merge_request_title');
 
   if(mrTitle.is(":empty")) {

app/views/projects/merge_requests/branch_to.js.haml

 :plain
-  $(".mr_target_commit").html("#{commit_to_html(@commit)}");
+  $(".mr_target_commit").html("#{commit_to_html(@commit, @target_project)}");

app/views/projects/merge_requests/show/_commits.html.haml

@@ -7,19 +7,19 @@
       - if @commits.count > 8
         %ul.first-commits.well-list
           - @commits.first(8).each do |commit|
-            = render "projects/commits/commit", commit: commit
+            = render "projects/commits/commit", commit: commit, project: @merge_request.source_project
           %li.bottom
             8 of #{@commits.count} commits displayed.
             %strong
               %a.show-all-commits Click here to show all
         %ul.all-commits.hide.well-list
           - @commits.each do |commit|
-            = render "projects/commits/commit", commit: commit
+            = render "projects/commits/commit", commit: commit, project: @merge_request.source_project
 
       - else
         %ul.well-list
           - @commits.each do |commit|
-            = render "projects/commits/commit", commit: commit
+            = render "projects/commits/commit", commit: commit, project: @merge_request.source_project
 
 - else
   %h4.nothing_here_message

app/views/projects/merge_requests/show/_diffs.html.haml

 - if @merge_request.valid_diffs?
-  = render "projects/commits/diffs", diffs: @merge_request.diffs
+  = render "projects/commits/diffs", diffs: @merge_request.diffs, project: @merge_request.source_project
 - elsif @merge_request.broken_diffs?
   %h4.nothing_here_message
     Can't load diff.
     You can
-    = link_to "download it", project_merge_request_path(@project, @merge_request, format: :diff), class: "vlink"
+    = link_to "download it", project_merge_request_path(@merge_request.source_project, @merge_request), format: :diff, class: "vlink"
     instead.
 - else
   %h4.nothing_here_message Nothing to merge

app/views/projects/merge_requests/show/_how_to_merge.html.haml

@@ -3,17 +3,49 @@
     %a.close{href: "#"} ×
     %h3 How To Merge
   .modal-body
-    %p
-      %strong Step 1.
-      Checkout target branch and get recent objects from GitLab
-    %pre.dark
-      :preserve
-        git checkout #{@merge_request.target_branch}
-        git fetch origin
-    %p
-      %strong Step 2.
-      Merge source branch into target branch and push changes to GitLab
-    %pre.dark
-      :preserve
-        git merge origin/#{@merge_request.source_branch}
-        git push origin #{@merge_request.target_branch}
+    - if @merge_request.for_fork?
+      - source_remote = @merge_request.source_project.namespace.nil? ? "source" :@merge_request.source_project.namespace.path
+      - target_remote = @merge_request.target_project.namespace.nil? ? "target" :@merge_request.target_project.namespace.path
+      %p
+        %strong Step 1.
+        Checkout target branch and get recent objects from GitLab
+        Assuming remote for  #{@merge_request.target_project.path_with_namespace} is called #{target_remote}
+        remote for  #{@merge_request.source_project.path_with_namespace} is called #{source_remote}
+      %pre.dark
+        :preserve
+          git checkout #{target_remote} #{@merge_request.target_branch}
+          git fetch #{source_remote}
+      %p
+        %strong Step 2.
+        Merge source branch into target branch and push changes to GitLab
+      %pre.dark
+        :preserve
+          git merge #{source_remote}/#{@merge_request.source_branch}
+          git push #{target_remote} #{@merge_request.target_branch}
+    - else
+      %p
+        %strong Step 1.
+        Checkout target branch and get recent objects from GitLab
+      %pre.dark
+        :preserve
+          git checkout #{@merge_request.target_branch}
+          git fetch origin
+      %p
+        %strong Step 2.
+        Merge source branch into target branch and push changes to GitLab
+      %pre.dark
+        :preserve
+          git merge origin/#{@merge_request.source_branch}
+          git push origin #{@merge_request.target_branch}
+
+
+:javascript
+  $(function(){
+    var modal = $('#modal_merge_info').modal({modal: true, show:false});
+    $('.how_to_merge_link').bind("click", function(){
+      modal.show();
+    });
+    $('.modal-header .close').bind("click", function(){
+      modal.hide();
+    })
+  })

app/views/projects/merge_requests/show/_mr_accept.html.haml

@@ -15,7 +15,7 @@
             for instructions
           .accept_group
             = f.submit "Accept Merge Request", class: "btn btn-create accept_merge_request"
-            - unless @project.root_ref? @merge_request.source_branch
+            - unless @merge_request.disallow_source_branch_removal?
               .remove_branch_holder
                 = label_tag :should_remove_source_branch, class: "checkbox" do
                   = check_box_tag :should_remove_source_branch

app/views/projects/merge_requests/show/_mr_title.html.haml

 %h3.page-title
   = "Merge Request ##{@merge_request.id}:"
    
-  %span.label-branch= @merge_request.source_branch
-  →
-  %span.label-branch= @merge_request.target_branch
+  -if @merge_request.for_fork?
+    %span.label-project= @merge_request.source_project.path_with_namespace
+    %span.label-branch= @merge_request.source_branch
+    →
+    %span.label-project= @merge_request.target_project.path_with_namespace
+    %span.label-branch= @merge_request.target_branch
+  - else
+    %span.label-branch= @merge_request.source_branch
+    →
+    %span.label-branch= @merge_request.target_branch
 
   %span.pull-right
     - if can?(current_user, :modify_merge_request, @merge_request)
@@ -19,7 +26,7 @@
 
         = link_to 'Close', project_merge_request_path(@project, @merge_request, merge_request: {state_event: :close }), method: :put, class: "btn grouped btn-close", title: "Close merge request"
 
-        = link_to edit_project_merge_request_path(@project, @merge_request), class: "btn grouped" do
+        = link_to edit_project_merge_request_path(@project, @merge_request), class: "btn grouped", id:"edit_merge_request" do
           %i.icon-edit
           Edit
 

app/views/projects/merge_requests/update_branches.js.haml

+:plain
+  $(".target_branch").html("#{escape_javascript(options_for_select(@target_branches))}");
+  $(".target_branch").trigger("liszt:updated");
+  $(".mr_target_commit").html("");
+  $(".target_branch").trigger("change");
\ No newline at end of file

app/views/projects/notes/_discussion.html.haml

@@ -23,7 +23,7 @@
           discussion on this merge request diff
       - elsif note.for_commit?
         started a discussion on commit
-        #{link_to note.noteable.short_id, project_commit_path(@project, note.noteable)}
+        #{link_to note.noteable.short_id, project_commit_path(note.project, note.noteable)}
         = link_to_commit_diff_line_note(note) if note.for_diff_line?
       - else
         %cite.cgray started a discussion

app/views/search/_result.html.haml

@@ -22,11 +22,14 @@
     - @merge_requests.each do |merge_request|
       %li
         merge request:
-        = link_to [merge_request.project, merge_request] do
+        = link_to [merge_request.target_project, merge_request] do
           %span ##{merge_request.id}
           %strong.term
             = truncate merge_request.title, length: 50
-        %span.light (#{merge_request.project.name_with_namespace})
+        - if merge_request.for_fork?
+          %span.light (#{merge_request.source_project.name_with_namespace}:#{merge_request.source_branch} → #{merge_request.target_project.name_with_namespace}:#{merge_request.target_branch})
+        - else
+          %span.light (#{merge_request.source_branch} → #{merge_request.target_branch})
     - @issues.each do |issue|
       %li
         issue:

app/views/shared/_merge_requests.html.haml

 - if @merge_requests.any?
-  - @merge_requests.group_by(&:project).each do |group|
+  - @merge_requests.group_by(&:target_project).each do |group|
     .ui-box
       - project = group[0]
       .title

config/routes.rb

@@ -257,6 +257,7 @@ Gitlab::Application.routes.draw do
         collection do
           get :branch_from
           get :branch_to
+          get :update_branches
         end
       end
 

db/fixtures/development/10_merge_requests.rb

@@ -23,7 +23,8 @@ Gitlab::Seeder.quiet do
       id: i,
       source_branch: branches.first,
       target_branch: branches.last,
-      project_id: project.id,
+      source_project_id: project.id,
+      target_project_id: project.id,
       author_id: user_id,
       assignee_id: user_id,
       milestone: project.milestones.sample,

db/fixtures/test/001_repo.rb

@@ -19,5 +19,18 @@ FileUtils.cd(REPO_PATH) do
   # Remove the copy
   FileUtils.rm(SEED_REPO)
 end
+puts ' done.'
+print "Creating seed satellite..."
+
+SATELLITE_PATH = Rails.root.join('tmp', 'satellite')
+# Make directory
+FileUtils.mkdir_p(SATELLITE_PATH)
+# Clear any potential directory
+FileUtils.rm_rf("#{SATELLITE_PATH}/gitlabhq")
+#  Chdir, clone from the seed
+FileUtils.cd(SATELLITE_PATH) do
+  # Clone the satellite
 
+  `git clone --quiet #{REPO_PATH}/gitlabhq #{SATELLITE_PATH}/gitlabhq`
+end
 puts ' done.'

db/migrate/20130419190306_allow_merges_for_forks.rb

+class AllowMergesForForks < ActiveRecord::Migration
+
+  def self.up
+    add_column :merge_requests, :target_project_id, :integer, :null => false
+    MergeRequest.update_all("target_project_id = project_id")
+    rename_column :merge_requests, :project_id, :source_project_id
+  end
+
+  def self.down
+    remove_column :merge_requests, :target_project_id
+    rename_column :merge_requests, :source_project_id,:project_id
+  end
+
+end

db/schema.rb

@@ -84,9 +84,9 @@ ActiveRecord::Schema.define(:version => 20130624162710) do
   add_index "keys", ["user_id"], :name => "index_keys_on_user_id"
 
   create_table "merge_requests", :force => true do |t|
-    t.string   "target_branch",                       :null => false
-    t.string   "source_branch",                       :null => false
-    t.integer  "project_id",                          :null => false
+    t.string   "target_branch",                           :null => false
+    t.string   "source_branch",                           :null => false
+    t.integer  "source_project_id",                       :null => false
     t.integer  "author_id"
     t.integer  "assignee_id"
     t.string   "title"
@@ -97,14 +97,15 @@ ActiveRecord::Schema.define(:version => 20130624162710) do
     t.integer  "milestone_id"
     t.string   "state"
     t.string   "merge_status"
+    t.integer  "target_project_id",                       :null => false
   end
 
   add_index "merge_requests", ["assignee_id"], :name => "index_merge_requests_on_assignee_id"
   add_index "merge_requests", ["author_id"], :name => "index_merge_requests_on_author_id"
   add_index "merge_requests", ["created_at"], :name => "index_merge_requests_on_created_at"
   add_index "merge_requests", ["milestone_id"], :name => "index_merge_requests_on_milestone_id"
-  add_index "merge_requests", ["project_id"], :name => "index_merge_requests_on_project_id"
   add_index "merge_requests", ["source_branch"], :name => "index_merge_requests_on_source_branch"
+  add_index "merge_requests", ["source_project_id"], :name => "index_merge_requests_on_project_id"
   add_index "merge_requests", ["target_branch"], :name => "index_merge_requests_on_target_branch"
   add_index "merge_requests", ["title"], :name => "index_merge_requests_on_title"
 

features/dashboard/dashboard.feature

@@ -16,6 +16,7 @@ Feature: Dashboard
     And I visit dashboard page
     Then I should see groups list
 
+  @javascript
   Scenario: I should see last push widget
     Then I should see last push widget
     And I click "Create Merge Request" link

features/project/forked_merge_requests.feature

+Feature: Project Forked Merge Requests
+  Background:
+    Given I sign in as a user
+    And I am a member of project "Shop"
+    And I have a project forked off of "Shop" called "Forked Shop"
+
+  @javascript
+  Scenario: I can visit the target projects commit for a forked merge request
+    Given I visit project "Forked Shop" merge requests page
+    And I click link "New Merge Request"
+    And I fill out a "Merge Request On Forked Project" merge request
+    And I follow the target commit link
+    Then I should see the commit under the forked from project
+
+  @javascript
+  Scenario: I submit new unassigned merge request to a forked project
+    Given I visit project "Forked Shop" merge requests page
+    And I click link "New Merge Request"
+    And I fill out a "Merge Request On Forked Project" merge request
+    And I submit the merge request
+    Then I should see merge request "Merge Request On Forked Project"
+
+  @javascript
+  Scenario: I should see a push widget for forked merge requests
+    Given project "Forked Shop" has push event
+    And I visit dashboard page
+    Then I should see last push widget
+    And I click "Create Merge Request on fork" link
+    Then I see prefilled new Merge Request page for the forked project
+
+  @javascript
+  Scenario: I can edit a forked merge request
+    Given I visit project "Forked Shop" merge requests page
+    And I click link "New Merge Request"
+    And I fill out a "Merge Request On Forked Project" merge request
+    And I submit the merge request
+    And I should see merge request "Merge Request On Forked Project"
+    And I click link edit "Merge Request On Forked Project"
+    Then I see the edit page prefilled for "Merge Request On Forked Project"
+    And I update the merge request title
+    And I save the merge request
+    Then I should see the edited merge request
+
+  @javascript
+  Scenario: I cannot submit an invalid merge request
+    Given I visit project "Forked Shop" merge requests page
+    And I click link "New Merge Request"
+    And I fill out an invalid "Merge Request On Forked Project" merge request
+    And I submit the merge request
+    Then I should see validation errors
\ No newline at end of file

features/project/merge_requests.feature

@@ -29,6 +29,7 @@ Feature: Project Merge Requests
     And I click link "Close"
     Then I should see closed merge request "Bug NS-04"
 
+  @javascript
   Scenario: I submit new unassigned merge request
     Given I click link "New Merge Request"
     And I submit new merge request "Wiki Feature"

features/steps/dashboard/dashboard.rb

@@ -22,6 +22,7 @@ class Dashboard < Spinach::FeatureSteps
 
   Then 'I see prefilled new Merge Request page' do
     current_path.should == new_project_merge_request_path(@project)
+    find("#merge_request_target_project_id").value.should == @project.id.to_s
     find("#merge_request_source_branch").value.should == "new_design"
     find("#merge_request_target_branch").value.should == "master"
     find("#merge_request_title").value.should == "New Design"

features/steps/dashboard/dashboard_event_filters.rb

@@ -61,7 +61,7 @@ class EventFilters < Spinach::FeatureSteps
   end
 
   And 'this project has merge request event' do
-    merge_request = create :merge_request, author: @user, project: @project
+    merge_request = create :merge_request, author: @user, source_project: @project, target_project: @project
     Event.create(
       project: @project,
       action: Event::MERGED,

features/steps/dashboard/dashboard_merge_requests.rb

@@ -6,18 +6,24 @@ class DashboardMergeRequests < Spinach::FeatureSteps
     merge_requests = @user.merge_requests
     merge_requests.each do |mr|
       page.should have_content(mr.title[0..10])
-      page.should have_content(mr.project.name)
+      page.should have_content(mr.target_project.name)
+      page.should have_content(mr.source_project.name)
     end
   end
 
   And 'I have authored merge requests' do
-    project1 = create :project
-    project2 = create :project
+    project1_source = create :project
+    project1_target= create :project
+    project2_source = create :project
+    project2_target = create :project
 
-    project1.team << [@user, :master]
-    project2.team << [@user, :master]
 
-    merge_request1 = create :merge_request, author: @user, project: project1
-    merge_request2 = create :merge_request, author: @user, project: project2
+    project1_source.team << [@user, :master]
+    project1_target.team << [@user, :master]
+    project2_source.team << [@user, :master]
+    project2_target.team << [@user, :master]
+
+    merge_request1 = create :merge_request, author: @user, source_project: project1_source, target_project: project1_target
+    merge_request2 = create :merge_request, author: @user, source_project: project2_source, target_project: project2_target
   end
 end

features/steps/group/group.rb

@@ -60,7 +60,8 @@ class Groups < Spinach::FeatureSteps
 
   Given 'project from group has merge requests assigned to me' do
     create :merge_request,
-      project: project,
+      source_project: project,
+      target_project: project,
       assignee: current_user,
       author: current_user
   end

features/steps/project/project_fork.rb

@@ -4,6 +4,8 @@ class ForkProject < Spinach::FeatureSteps
   include SharedProject
 
   step 'I click link "Fork"' do
+    page.should have_content "Shop"
+    page.should have_content "Fork"
     Gitlab::Shell.any_instance.stub(:fork_repository).and_return(true)
     click_link "Fork"
   end
@@ -17,9 +19,13 @@ class ForkProject < Spinach::FeatureSteps
   step 'I should see the forked project page' do
     page.should have_content "Project was successfully forked."
     current_path.should include current_user.namespace.path
+    @forked_project = Project.find_by_namespace_id(current_user.namespace.path)
   end
 
   step 'I already have a project named "Shop" in my namespace' do
+    current_user.namespace ||= create(:namespace)
+    current_user.namespace.should_not be_nil
+    current_user.namespace.path.should_not be_nil
     @my_project = create(:project_with_code, name: "Shop", namespace: current_user.namespace)
   end
 

features/steps/project/project_forked_merge_requests.rb

+class ProjectForkedMergeRequests < Spinach::FeatureSteps
+  include SharedAuthentication
+  include SharedProject
+  include SharedNote
+  include SharedPaths
+
+  Given 'I am a member of project "Shop"' do
+    @project = Project.find_by_name "Shop"
+    @project ||= create(:project_with_code, name: "Shop")
+    @project.team << [@user, :reporter]
+  end
+
+  And 'I have a project forked off of "Shop" called "Forked Shop"' do
+    @forking_user = @user
+    forked_project_link = build(:forked_project_link)
+    @forked_project = Project.find_by_name "Forked Shop"
+    @forked_project ||= create(:source_project_with_code, name: "Forked Shop", forked_project_link: forked_project_link, creator_id: @forking_user.id , namespace: @forking_user.namespace)
+    forked_project_link.forked_from_project = @project
+    forked_project_link.forked_to_project = @forked_project
+    @forked_project.team << [@forking_user , :master]
+    forked_project_link.save!
+  end
+
+  Given 'I click link "New Merge Request"' do
+    click_link "New Merge Request"
+  end
+
+  Then 'I should see merge request "Merge Request On Forked Project"' do
+    page.should have_content "Merge Request On Forked Project"
+    @project.merge_requests.size.should >= 1
+    @merge_request = @project.merge_requests.last
+    current_path.should == project_merge_request_path(@project, @merge_request)
+    @merge_request.title.should == "Merge Request On Forked Project"
+    @merge_request.source_project.should == @forked_project
+    @merge_request.source_branch.should == "master"
+    @merge_request.target_branch.should == "stable"
+    page.should have_content @forked_project.path_with_namespace
+    page.should have_content @project.path_with_namespace
+    page.should have_content @merge_request.source_branch
+    page.should have_content @merge_request.target_branch
+  end
+
+  And 'I fill out a "Merge Request On Forked Project" merge request' do
+    #The ordering here is a bit whacky on purpose:
+    #Select the target right away, to give update_branches time to run and clean up the target_branches
+    find(:select, "merge_request_target_project_id", {}).value.should == @forked_project.id.to_s
+    select @project.path_with_namespace, from: "merge_request_target_project_id"
+
+
+    fill_in "merge_request_title", with: "Merge Request On Forked Project"
+    find(:select, "merge_request_source_project_id", {}).value.should == @forked_project.id.to_s
+
+    find(:select, "merge_request_target_project_id", {}).value.should == @project.id.to_s
+
+    #Ensure the option exists in the select
+    find(:select, "merge_request_source_branch", {}).should have_content "master"
+    select "master", from: "merge_request_source_branch"
+    #Ensure the option is selected
+    find(:select, "merge_request_source_branch", {}).value.should have_content "master"
+    verify_commit_link(".mr_source_commit",@forked_project)
+
+
+    #This could fail if the javascript hasn't run yet, there is a timing issue here -- this is why we do the select at the top
+    #Ensure the option exists in the select
+    find(:select, "merge_request_target_branch", {}).should have_content "stable"
+    #We must give apparently lots of time for update branches to finish
+
+    (find(:select, "merge_request_target_branch", {}).find(:option, "stable",{}).select_option).should be_true
+    #Ensure the option is selected
+    find(:select, "merge_request_target_branch", {}).value.should have_content "stable"
+    verify_commit_link(".mr_target_commit",@project)
+  end
+
+  And 'I submit the merge request' do
+    click_button "Submit merge request"
+  end
+
+  And 'I follow the target commit link' do
+    commit = @project.repository.commit
+    click_link commit.short_id(8)
+  end
+
+  Then 'I should see the commit under the forked from project' do
+    commit = @project.repository.commit
+    page.should have_content(commit.message)
+  end
+
+  And 'I click "Create Merge Request on fork" link' do
+    click_link "Create Merge Request on fork"
+  end
+
+  Then 'I see prefilled new Merge Request page for the forked project' do
+    current_path.should == new_project_merge_request_path(@forked_project)
+    find("#merge_request_source_project_id").value.should == @forked_project.id.to_s
+    find("#merge_request_target_project_id").value.should == @project.id.to_s
+    find("#merge_request_source_branch").value.should have_content "new_design"
+    find("#merge_request_target_branch").value.should have_content "master"
+    find("#merge_request_title").value.should == "New Design"
+    verify_commit_link(".mr_target_commit",@project)
+    verify_commit_link(".mr_source_commit",@forked_project)
+  end
+
+  And 'I update the merge request title' do
+    fill_in "merge_request_title", with: "An Edited Forked Merge Request"
+  end
+
+  And 'I save the merge request' do
+    click_button "Save changes"
+  end
+
+  Then 'I should see the edited merge request' do
+    page.should have_content "An Edited Forked Merge Request"
+    @project.merge_requests.size.should >= 1
+    @merge_request = @project.merge_requests.last
+    current_path.should == project_merge_request_path(@project, @merge_request)
+    @merge_request.source_project.should == @forked_project
+    @merge_request.source_branch.should == "master"
+    @merge_request.target_branch.should == "stable"
+    page.should have_content @forked_project.path_with_namespace
+    page.should have_content @project.path_with_namespace
+    page.should have_content @merge_request.source_branch
+    page.should have_content @merge_request.target_branch
+  end
+
+  Then 'I should see last push widget' do
+    page.should have_content "You pushed to new_design"
+    page.should have_link "Create Merge Request"
+  end
+
+  Given 'project "Forked Shop" has push event' do
+    @forked_project = Project.find_by_name("Forked Shop")
+
+    data = {
+      before: "0000000000000000000000000000000000000000",
+      after: "0220c11b9a3e6c69dc8fd35321254ca9a7b98f7e",
+      ref: "refs/heads/new_design",
+      user_id: @user.id,
+      user_name: @user.name,
+      repository: {
+        name: @forked_project.name,
+        url: "localhost/rubinius",
+        description: "",
+        homepage: "localhost/rubinius",
+        private: true
+      }
+    }
+
+    @event = Event.create(
+      project: @forked_project,
+      action: Event::PUSHED,
+      data: data,
+      author_id: @user.id
+    )
+  end
+
+
+  Then 'I click link edit "Merge Request On Forked Project"' do
+    find("#edit_merge_request").click
+  end
+
+  Then 'I see the edit page prefilled for "Merge Request On Forked Project"' do
+    current_path.should == edit_project_merge_request_path(@project, @merge_request)
+    page.should have_content "Edit merge request #{@merge_request.id}"
+    find("#merge_request_title").value.should == "Merge Request On Forked Project"
+    find("#merge_request_source_project_id").value.should == @forked_project.id.to_s
+    find("#merge_request_target_project_id").value.should == @project.id.to_s
+    find("#merge_request_source_branch").value.should have_content "master"
+    verify_commit_link(".mr_source_commit",@forked_project)
+    find("#merge_request_target_branch").value.should have_content "stable"
+    verify_commit_link(".mr_target_commit",@project)
+  end
+
+  And 'I fill out an invalid "Merge Request On Forked Project" merge request' do
+    #If this isn't filled in the rest of the validations won't be triggered
+    fill_in "merge_request_title", with: "Merge Request On Forked Project"
+    find(:select, "merge_request_source_project_id", {}).value.should == @forked_project.id.to_s
+    find(:select, "merge_request_target_project_id", {}).value.should == @forked_project.id.to_s
+    find(:select, "merge_request_source_branch", {}).value.should == ""
+    find(:select, "merge_request_target_branch", {}).value.should == ""
+  end
+
+  Then 'I should see validation errors' do
+    page.should have_content "Source branch can't be blank"
+    page.should have_content "Target branch can't be blank"
+    page.should have_content "Branch conflict You can not use same project/branch for source and target"
+  end
+
+  def project
+    @project ||= Project.find_by_name!("Shop")
+  end
+
+  #Verify a link is generated against the correct project
+  def verify_commit_link(container_div, container_project)
+    #This should force a wait for the javascript to execute
+    find(:div,container_div).should have_css ".browse_code_link_holder"
+    find(:div,container_div).find(".commit_short_id")['href'].should have_content "#{container_project.path_with_namespace}/commit"
+  end
+end

features/steps/project/project_merge_requests.rb

@@ -56,30 +56,41 @@ class ProjectMergeRequests < Spinach::FeatureSteps
   end
 
   And 'I submit new merge request "Wiki Feature"' do
-    fill_in "merge_request_title", with: "Wiki Feature"
-    select "bootstrap", from: "merge_request_source_branch"
-    select "master", from: "merge_request_target_branch"
+    #this must come first, so that the target branch is set by the time the "select" for "notes_refactoring" is executed
+    select project.path_with_namespace, :from => "merge_request_target_project_id"
+    fill_in "merge_request_title", :with => "Wiki Feature"
+    select "master", :from => "merge_request_source_branch"
+    find(:select, "merge_request_target_project_id", {}).value.should == project.id.to_s
+    find(:select, "merge_request_source_project_id", {}).value.should == project.id.to_s
+
+    #using "notes_refactoring" because "Bug NS-04" uses master/stable, this will fail merge_request validation if the branches are the same
+    find(:select, "merge_request_target_branch", {}).find(:option, "notes_refactoring", {}).value.should == "notes_refactoring"
+    select "notes_refactoring", :from => "merge_request_target_branch"
+
     click_button "Submit merge request"
   end
 
   And 'project "Shop" have "Bug NS-04" open merge request' do
     create(:merge_request,
            title: "Bug NS-04",
-           project: project,
+           source_project: project,
+           target_project: project,
            author: project.users.first)
   end
 
   And 'project "Shop" have "Bug NS-05" open merge request with diffs inside' do
     create(:merge_request_with_diffs,
            title: "Bug NS-05",
-           project: project,
+           source_project: project,
+           target_project: project,
            author: project.users.first)
   end
 
   And 'project "Shop" have "Feature NS-03" closed merge request' do
     create(:closed_merge_request,
            title: "Feature NS-03",
-           project: project,
+           source_project: project,
+           target_project: project,
            author: project.users.first)
   end
 

features/steps/shared/paths.rb

@@ -184,6 +184,10 @@ module SharedPaths
     visit project_path(project)
   end
 
+  step 'I visit project "Forked Shop" merge requests page' do
+    visit project_merge_requests_path(@forked_project)
+  end
+
   step 'I visit edit project "Shop" page' do
     visit edit_project_path(project)
   end
@@ -239,18 +243,22 @@ module SharedPaths
 
   step 'I visit merge request page "Bug NS-04"' do
     mr = MergeRequest.find_by_title("Bug NS-04")
-    visit project_merge_request_path(mr.project, mr)
+    visit project_merge_request_path(mr.target_project, mr)
   end
 
   step 'I visit merge request page "Bug NS-05"' do
     mr = MergeRequest.find_by_title("Bug NS-05")
-    visit project_merge_request_path(mr.project, mr)
+    visit project_merge_request_path(mr.target_project, mr)
   end
 
   step 'I visit project "Shop" merge requests page' do
     visit project_merge_requests_path(project)
   end
 
+  step 'I visit forked project "Shop" merge requests page' do
+    visit project_merge_requests_path(project)
+  end
+
   step 'I visit project "Shop" milestones page' do
     visit project_milestones_path(project)
   end

features/support/env.rb

@@ -35,8 +35,7 @@ Capybara.ignore_hidden_elements = false
 DatabaseCleaner.strategy = :truncation
 
 Spinach.hooks.before_scenario do
-  TestEnv.init(mailer: false)
-
+  TestEnv.setup_stubs
   DatabaseCleaner.start
 end
 
@@ -45,6 +44,7 @@ Spinach.hooks.after_scenario do
 end
 
 Spinach.hooks.before_run do
+  TestEnv.init(mailer: false, init_repos: true, repos: false)
   RSpec::Mocks::setup self
 
   include FactoryGirl::Syntax::Methods

lib/api/merge_requests.rb

@@ -14,6 +14,14 @@ module API
           end
           not_found!
         end
+
+        def not_fork?(target_project_id, user_project)
+          target_project_id.nil? || target_project_id == user_project.id.to_s
+        end
+
+        def target_matches_fork(target_project_id,user_project)
+          user_project.forked? && user_project.forked_from_project.id.to_s == target_project_id
+        end
       end
 
       # List merge requests
@@ -51,9 +59,10 @@ module API
       #
       # Parameters:
       #
-      #   id (required)            - The ID of a project
+      #   id (required)            - The ID of a project - this will be the source of the merge request
       #   source_branch (required) - The source branch
       #   target_branch (required) - The target branch
+      #   target_project           - The target project of the merge request defaults to the :id of the project
       #   assignee_id              - Assignee user ID
       #   title (required)         - Title of MR
       #
@@ -63,10 +72,20 @@ module API
       post ":id/merge_requests" do
         authorize! :write_merge_request, user_project
         required_attributes! [:source_branch, :target_branch, :title]
-
-        attrs = attributes_for_keys [:source_branch, :target_branch, :assignee_id, :title]
+        attrs = attributes_for_keys [:source_branch, :target_branch, :assignee_id, :title, :target_project_id]
         merge_request = user_project.merge_requests.new(attrs)
         merge_request.author = current_user
+        merge_request.source_project = user_project
+        target_project_id = attrs[:target_project_id]
+        if not_fork?(target_project_id, user_project)
+          merge_request.target_project = user_project
+        else
+          if target_matches_fork(target_project_id,user_project)
+            merge_request.target_project = Project.find_by_id(attrs[:target_project_id])
+          else
+            render_api_error!('(Bad Request) Specified target project that is not the source project, or the source fork of the project.', 400)
+          end
+        end
 
         if merge_request.save
           merge_request.reload_code

lib/gitlab/satellite/action.rb

@@ -25,25 +25,31 @@ module Gitlab
           end
         end
       rescue Errno::ENOMEM => ex
-        Gitlab::GitLogger.error(ex.message)
-        return false
+        return handle_exception(ex)
       rescue Grit::Git::GitTimeout => ex
-        Gitlab::GitLogger.error(ex.message)
-        return false
+        return handle_exception(ex)
       ensure
         Gitlab::ShellEnv.reset_env
       end
 
-      # * Clears the satellite
-      # * Updates the satellite from Gitolite
+      # * Recreates the satellite
       # * Sets up Git variables for the user
       #
       # Note: use this within #in_locked_and_timed_satellite
       def prepare_satellite!(repo)
         project.satellite.clear_and_update!
 
-        repo.git.config({}, "user.name", user.name)
-        repo.git.config({}, "user.email", user.email)
+        repo.config['user.name'] = user.name
+        repo.config['user.email'] = user.email
+      end
+
+      def default_options(options = {})
+        {raise: true, timeout: true}.merge(options)
+      end
+
+      def handle_exception(exception)
+        Gitlab::GitLogger.error(exception.message)
+        false
       end
     end
   end

lib/gitlab/satellite/merge_action.rb

@@ -5,48 +5,118 @@ module Gitlab
       attr_accessor :merge_request
 
       def initialize(user, merge_request)
-        super user, merge_request.project
+        super user, merge_request.target_project
         @merge_request = merge_request
       end
 
       # Checks if a merge request can be executed without user interaction
       def can_be_merged?
         in_locked_and_timed_satellite do |merge_repo|
+          prepare_satellite!(merge_repo)
           merge_in_satellite!(merge_repo)
         end
       end
 
       # Merges the source branch into the target branch in the satellite and
-      # pushes it back to Gitolite.
-      # It also removes the source branch if requested in the merge request.
+      # pushes it back to the repository.
+      # It also removes the source branch if requested in the merge request (and this is permitted by the merge request).
       #
       # Returns false if the merge produced conflicts
-      # Returns false if pushing from the satellite to Gitolite failed or was rejected
+      # Returns false if pushing from the satellite to the repository failed or was rejected
       # Returns true otherwise
       def merge!
         in_locked_and_timed_satellite do |merge_repo|
+          prepare_satellite!(merge_repo)
           if merge_in_satellite!(merge_repo)
             # push merge back to Gitolite
             # will raise CommandFailed when push fails
-            merge_repo.git.push({raise: true, timeout: true}, :origin, merge_request.target_branch)
-
+            merge_repo.git.push(default_options, :origin, merge_request.target_branch)
             # remove source branch
             if merge_request.should_remove_source_branch && !project.root_ref?(merge_request.source_branch)
               # will raise CommandFailed when push fails
-              merge_repo.git.push({raise: true, timeout: true}, :origin, ":#{merge_request.source_branch}")
+              merge_repo.git.push(default_options, :origin, ":#{merge_request.source_branch}")
             end
-
             # merge, push and branch removal successful
             true
           end
         end
       rescue Grit::Git::CommandFailed => ex
-        Gitlab::GitLogger.error(ex.message)
-        false
+        handle_exception(ex)
       end
 
-      private
+      # Get a raw diff of the source to the target
+      def diff_in_satellite
+        in_locked_and_timed_satellite do |merge_repo|
+          prepare_satellite!(merge_repo)
+
+          update_satellite_source_and_target!(merge_repo)
+          if merge_request.for_fork?
+            diff = merge_repo.git.native(:diff, default_options, "origin/#{merge_request.target_branch}", "source/#{merge_request.source_branch}")
+          else
+            diff = merge_repo.git.native(:diff, default_options, "#{merge_request.target_branch}", "#{merge_request.source_branch}")
+
+          end
+          return diff
+        end
+      rescue Grit::Git::CommandFailed => ex
+        handle_exception(ex)
+      end
+
+      # Only show what is new in the source branch compared to the target branch, not the other way around.
+      # The line below with merge_base is equivalent to diff with three dots (git diff branch1...branch2)
+      # From the git documentation: "git diff A...B" is equivalent to "git diff $(git-merge-base A B) B"
+      def diffs_between_satellite
+        in_locked_and_timed_satellite do |merge_repo|
+          prepare_satellite!(merge_repo)
+          update_satellite_source_and_target!(merge_repo)
+          if merge_request.for_fork?
+            common_commit = merge_repo.git.native(:merge_base, default_options, ["origin/#{merge_request.target_branch}", "source/#{merge_request.source_branch}"]).strip
+            #this method doesn't take default options
+            diffs = merge_repo.diff(common_commit, "source/#{merge_request.source_branch}")
+          else
+            raise "Attempt to determine diffs between for a non forked merge request in satellite MergeRequest.id:[#{merge_request.id}]"
+          end
+          diffs = diffs.map { |diff| Gitlab::Git::Diff.new(diff) }
+          return diffs
+        end
+      rescue Grit::Git::CommandFailed => ex
+        handle_exception(ex)
+      end
+
+      # Get commit as an email patch
+      def format_patch
+        in_locked_and_timed_satellite do |merge_repo|
+          prepare_satellite!(merge_repo)
+          update_satellite_source_and_target!(merge_repo)
+          if (merge_request.for_fork?)
+            patch = merge_repo.git.format_patch(default_options({stdout: true}), "origin/#{merge_request.target_branch}...source/#{merge_request.source_branch}")
+          else
+            patch = merge_repo.git.format_patch(default_options({stdout: true}), "#{merge_request.target_branch}...#{merge_request.source_branch}")
+          end
+          return patch
+        end
+      rescue Grit::Git::CommandFailed => ex
+        handle_exception(ex)
+      end
+
+      # Retrieve an array of commits between the source and the target
+      def commits_between
+        in_locked_and_timed_satellite do |merge_repo|
+          prepare_satellite!(merge_repo)
+          update_satellite_source_and_target!(merge_repo)
+          if (merge_request.for_fork?)
+            commits = merge_repo.commits_between("origin/#{merge_request.target_branch}", "source/#{merge_request.source_branch}")
+          else
+            raise "Attempt to determine commits between for a non forked merge request in satellite MergeRequest.id:[#{merge_request.id}]"
+          end
+          commits = commits.map { |commit| Gitlab::Git::Commit.new(commit, nil) }
+          return commits
+        end
+      rescue Grit::Git::CommandFailed => ex
+        handle_exception(ex)
+      end
 
+      private
       # Merges the source_branch into the target_branch in the satellite.
       #
       # Note: it will clear out the satellite before doing anything
@@ -54,18 +124,35 @@ module Gitlab
       # Returns false if the merge produced conflicts
       # Returns true otherwise
       def merge_in_satellite!(repo)
-        prepare_satellite!(repo)
-
-        # create target branch in satellite at the corresponding commit from Gitolite
-        repo.git.checkout({raise: true, timeout: true, b: true}, merge_request.target_branch, "origin/#{merge_request.target_branch}")
+        update_satellite_source_and_target!(repo)
 
-        # merge the source branch from Gitolite into the satellite
+        # merge the source branch into the satellite
         # will raise CommandFailed when merge fails
-        repo.git.pull({raise: true, timeout: true, no_ff: true}, :origin, merge_request.source_branch)
+        if merge_request.for_fork?
+          repo.git.pull(default_options({no_ff: true}), 'source', merge_request.source_branch)
+        else
+          repo.git.pull(default_options({no_ff: true}), 'origin', merge_request.source_branch)
+        end
       rescue Grit::Git::CommandFailed => ex
-        Gitlab::GitLogger.error(ex.message)
-        false
+        handle_exception(ex)
       end
+
+      # Assumes a satellite exists that is a fresh clone of the projects repo, prepares satellite for merges, diffs etc
+      def update_satellite_source_and_target!(repo)
+        if  merge_request.for_fork?
+          repo.remote_add('source', merge_request.source_project.repository.path_to_repo)
+          repo.remote_fetch('source')
+          repo.git.checkout(default_options({b: true}), merge_request.target_branch, "origin/#{merge_request.target_branch}")
+        else
+          # We can't trust the input here being branch names, we can't always check it out because it could be a relative ref i.e. HEAD~3
+          # we could actually remove the if true, because it should never ever happen (as long as the satellite has been prepared)
+          repo.git.checkout(default_options, "#{merge_request.source_branch}")
+          repo.git.checkout(default_options, "#{merge_request.target_branch}")
+        end
+      rescue Grit::Git::CommandFailed => ex
+        handle_exception(ex)
+      end
+
     end
   end
 end

lib/gitlab/satellite/satellite.rb

 module Gitlab
-  class SatelliteNotExistError < StandardError; end
+  class SatelliteNotExistError < StandardError;  end
 
   module Satellite
     class Satellite
@@ -24,8 +24,11 @@ module Gitlab
       def clear_and_update!
         raise_no_satellite unless exists?
 
+        File.exists? path
+        @repo = nil
         clear_working_dir!
         delete_heads!
+        remove_remotes!
         update_from_source!
       end
 
@@ -55,10 +58,11 @@ module Gitlab
         raise_no_satellite unless exists?
 
         File.open(lock_file, "w+") do |f|
-          f.flock(File::LOCK_EX)
-
-          Dir.chdir(path) do
-            return yield
+          begin
+            f.flock File::LOCK_EX
+            Dir.chdir(path) { return yield }
+          ensure
+            f.flock File::LOCK_UN
           end
         end
       end
@@ -100,20 +104,34 @@ module Gitlab
         if heads.include? PARKING_BRANCH
           repo.git.checkout({}, PARKING_BRANCH)
         else
-          repo.git.checkout({b: true}, PARKING_BRANCH)
+          repo.git.checkout(default_options({b: true}), PARKING_BRANCH)
         end
 
         # remove the parking branch from the list of heads ...
         heads.delete(PARKING_BRANCH)
         # ... and delete all others
-        heads.each { |head| repo.git.branch({D: true}, head) }
+        heads.each { |head| repo.git.branch(default_options({D: true}), head) }
+      end
+
+      # Deletes all remotes except origin
+      #
+      # This ensures we have no remote name clashes or issues updating branches when
+      # working with the satellite.
+      def remove_remotes!
+        remotes = repo.git.remote.split(' ')
+        remotes.delete('origin')
+        remotes.each { |name| repo.git.remote(default_options,'rm', name)}
       end
 
       # Updates the satellite from Gitolite
       #
       # Note: this will only update remote branches (i.e. origin/*)
       def update_from_source!
-        repo.git.fetch({timeout: true}, :origin)
+        repo.git.fetch(default_options, :origin)
+      end
+
+      def default_options(options = {})
+        {raise: true, timeout: true}.merge(options)
       end
 
       # Create directory for storing

spec/contexts/filter_context_spec.rb

+require 'spec_helper'
+
+describe FilterContext do
+
+  let(:user) { create :user }
+  let(:user2) { create :user }
+  let(:project1) { create(:project, creator_id: user.id) }
+  let(:project2) { create(:project, creator_id: user.id) }
+  let(:merge_request1) { create(:merge_request, author_id: user.id, source_project: project1, target_project: project2) }
+  let(:merge_request2) { create(:merge_request, author_id: user.id, source_project: project2, target_project: project1) }
+  let(:merge_request3) { create(:merge_request, author_id: user.id, source_project: project2, target_project: project2) }
+  let(:merge_request4) { create(:merge_request, author_id: user2.id, source_project: project2, target_project: project2, target_branch:"notes_refactoring") }
+  let(:issue1) { create(:issue, assignee_id: user.id, project: project1) }
+  let(:issue2) { create(:issue, assignee_id: user.id, project: project2) }
+  let(:issue3) { create(:issue, assignee_id: user2.id, project: project2) }
+
+  describe 'merge requests' do
+    before :each do
+      merge_request1
+      merge_request2
+      merge_request3
+      merge_request4
+    end
+    it 'should by default filter properly' do
+      merge_requests = user.cared_merge_requests
+      params ={}
+      merge_requests = FilterContext.new(merge_requests, params).execute
+      merge_requests.size.should == 3
+    end
+    it 'should apply blocks passed in on creation to the filters' do
+      merge_requests = user.cared_merge_requests
+      params = {:project_id => project1.id}
+      merge_requests = FilterContext.new(merge_requests, params).execute
+      merge_requests.size.should == 2
+    end
+  end
+
+  describe 'issues' do
+    before :each do
+      issue1
+      issue2
+      issue3
+    end
+    it 'should by default filter projects properly' do
+      issues = user.assigned_issues
+      params = {}
+      issues = FilterContext.new(issues, params).execute
+      issues.size.should == 2
+    end
+    it 'should apply blocks passed in on creation to the filters' do
+      issues = user.assigned_issues
+      params = {:project_id => project1.id}
+      issues = FilterContext.new(issues, params).execute
+      issues.size.should == 1
+    end
+  end
+end
\ No newline at end of file

spec/controllers/commit_controller_spec.rb

@@ -2,12 +2,11 @@ require 'spec_helper'
 
 describe Projects::CommitController do
   let(:project) { create(:project_with_code) }
-  let(:user)    { create(:user) }
-  let(:commit)  { project.repository.last_commit_for("master") }
+  let(:user) { create(:user) }
+  let(:commit) { project.repository.last_commit_for("master") }
 
   before do
     sign_in(user)
-
     project.team << [user, :master]
   end
 

spec/controllers/commits_controller_spec.rb

@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe Projects::CommitsController do
   let(:project) { create(:project_with_code) }
-  let(:user)    { create(:user) }
+  let(:user) { create(:user) }
 
   before do
     sign_in(user)

spec/controllers/merge_requests_controller_spec.rb

@@ -3,7 +3,7 @@ require 'spec_helper'
 describe Projects::MergeRequestsController do
   let(:project) { create(:project_with_code) }
   let(:user)    { create(:user) }
-  let(:merge_request) { create(:merge_request_with_diffs, project: project, target_branch: "bcf03b5d~3", source_branch: "bcf03b5d") }
+  let(:merge_request) { create(:merge_request_with_diffs, target_project: project, source_project: project, target_branch: "bcf03b5d~3", source_branch: "bcf03b5d") }
 
   before do
     sign_in(user)
@@ -28,7 +28,7 @@ describe Projects::MergeRequestsController do
       it "should render it" do
         get :show, project_id: project.code, id: merge_request.id, format: format
 
-        expect(response.body).to eq(merge_request.send(:"to_#{format}"))
+        expect(response.body).to eq((merge_request.send(:"to_#{format}",user)).to_s)
       end
 
       it "should not escape Html" do

spec/factories.rb

@@ -29,8 +29,19 @@ FactoryGirl.define do
     sequence(:name) { |n| "project#{n}" }
     path { name.downcase.gsub(/\s/, '_') }
     creator
+
+    trait :source do
+      sequence(:name) { |n| "source project#{n}" }
+    end
+    trait :target do
+      sequence(:name) { |n| "target project#{n}" }
+    end
+
+    factory :source_project, traits: [:source]
+    factory :target_project, traits: [:target]
   end
 
+
   factory :redmine_project, parent: :project do
     issues_tracker { "redmine" }
     issues_tracker_id { "project_name_in_redmine" }
@@ -39,11 +50,20 @@ FactoryGirl.define do
   factory :project_with_code, parent: :project do
     path { 'gitlabhq' }
 
+    trait :source_path do
+      path { 'source_gitlabhq' }
+    end
+
+    trait :target_path do
+      path { 'target_gitlabhq' }
+    end
+
+    factory :source_project_with_code, traits: [:source, :source_path]
+    factory :target_project_with_code, traits: [:target, :target_path]
+
     after :create do |project|
-      repos_path  = Rails.root.join('tmp', 'test-git-base-path')
-      seed_repo   = Rails.root.join('tmp', 'repositories', 'gitlabhq')
-      target_repo = File.join(repos_path, project.path_with_namespace + '.git')
-      system("ln -s #{seed_repo} #{target_repo}")
+      TestEnv.clear_repo_dir(project.namespace, project.path)
+      TestEnv.create_repo(project.namespace, project.path)
     end
   end
 
@@ -86,7 +106,8 @@ FactoryGirl.define do
   factory :merge_request do
     title
     author
-    project factory: :project_with_code
+    source_project factory: :source_project_with_code
+    target_project factory: :target_project_with_code
     source_branch "master"
     target_branch "stable"
 
@@ -96,13 +117,13 @@ FactoryGirl.define do
       source_branch "stable" # pretend bcf03b5d
       st_commits do
         [
-          project.repository.commit('bcf03b5d').to_hash,
-          project.repository.commit('bcf03b5d~1').to_hash,
-          project.repository.commit('bcf03b5d~2').to_hash
+          source_project.repository.commit('bcf03b5d').to_hash,
+          source_project.repository.commit('bcf03b5d~1').to_hash,
+          source_project.repository.commit('bcf03b5d~2').to_hash
         ]
       end
       st_diffs do
-        project.repo.diff("bcf03b5d~3", "bcf03b5d")
+        source_project.repo.diff("bcf03b5d~3", "bcf03b5d")
       end
     end
 
@@ -133,7 +154,7 @@ FactoryGirl.define do
 
     trait :on_commit do
       project factory: :project_with_code
-      commit_id     "bcf03b5de6c33f3869ef70d68cf06e679d1d7f9a"
+      commit_id "bcf03b5de6c33f3869ef70d68cf06e679d1d7f9a"
       noteable_type "Commit"
     end
 
@@ -143,12 +164,12 @@ FactoryGirl.define do
 
     trait :on_merge_request do
       project factory: :project_with_code
-      noteable_id   1
+      noteable_id 1
       noteable_type "MergeRequest"
     end
 
     trait :on_issue do
-      noteable_id   1
+      noteable_id 1
       noteable_type "Issue"
     end
 

spec/factories_spec.rb

 require 'spec_helper'
 
 INVALID_FACTORIES = [
-    :key_with_a_space_in_the_middle,
-    :invalid_key,
+  :key_with_a_space_in_the_middle,
+  :invalid_key,
 ]
 
 FactoryGirl.factories.map(&:name).each do |factory_name|

spec/features/gitlab_flavored_markdown_spec.rb

@@ -3,11 +3,11 @@ require 'spec_helper'
 describe "GitLab Flavored Markdown" do
   let(:project) { create(:project_with_code) }
   let(:issue) { create(:issue, project: project) }
-  let(:merge_request) { create(:merge_request, project: project) }
+  let(:merge_request) { create(:merge_request, source_project: project, target_project: project) }
   let(:fred) do
-      u = create(:user, name: "fred")
-      project.team << [u, :master]
-      u
+    u = create(:user, name: "fred")
+    project.team << [u, :master]
+    u
   end
 
   before do
@@ -83,9 +83,7 @@ describe "GitLab Flavored Markdown" do
 
   describe "for merge requests" do
     before do
-      @merge_request = create(:merge_request,
-                              project: project,
-                              title: "fix ##{issue.id}")
+      @merge_request = create(:merge_request, source_project: project, target_project: project, title: "fix ##{issue.id}")
     end
 
     it "should render title in merge_requests#index" do

spec/features/notes_on_merge_requests_spec.rb

@@ -2,8 +2,8 @@ require 'spec_helper'
 
 describe "On a merge request", js: true do
   let!(:project) { create(:project_with_code) }
-  let!(:merge_request) { create(:merge_request, project: project) }
-  let!(:note) { create(:note_on_merge_request_with_attachment, project: project) }
+  let!(:merge_request) { create(:merge_request, source_project: project, target_project: project) }
+  let!(:note) { create(:note_on_merge_request_with_attachment,  project: project) }
 
   before do
     login_as :user
@@ -62,7 +62,7 @@ describe "On a merge request", js: true do
 
     it 'should be added and form reset' do
       should have_content("This is awsome!")
-      within(".js-main-target-form") { should have_no_field("note[note]", with: "This is awesome!")  }
+      within(".js-main-target-form") { should have_no_field("note[note]", with: "This is awesome!") }
       within(".js-main-target-form") { should have_css(".js-note-preview", visible: false) }
       within(".js-main-target-form") { should have_css(".js-note-text", visible: true) }
     end
@@ -135,8 +135,8 @@ describe "On a merge request", js: true do
 end
 
 describe "On a merge request diff", js: true, focus: true do
-  let!(:project) { create(:project_with_code) }
-  let!(:merge_request) { create(:merge_request_with_diffs, project: project) }
+  let!(:project) { create(:source_project_with_code) }
+  let!(:merge_request) { create(:merge_request_with_diffs, source_project: project, target_project: project) }
 
   before do
     login_as :user
@@ -144,6 +144,7 @@ describe "On a merge request diff", js: true, focus: true do
     visit diffs_project_merge_request_path(project, merge_request)
   end
 
+
   subject { page }
 
   describe "when adding a note" do
@@ -183,6 +184,9 @@ describe "On a merge request diff", js: true, focus: true do
   end
 
   describe "with muliple note forms" do
+    let!(:project) { create(:source_project_with_code) }
+    let!(:merge_request) { create(:merge_request_with_diffs, source_project: project, target_project: project) }
+
     before do
       find('a[data-line-code="4735dfc552ad7bf15ca468adc3cad9d05b624490_185_185"]').click
       find('a[data-line-code="342e16cbbd482ac2047dc679b2749d248cc1428f_18_17"]').click
@@ -205,13 +209,13 @@ describe "On a merge request diff", js: true, focus: true do
 
       # TODO: fix
       #it 'should check if previews were rendered separately' do
-        #within("tr[id='4735dfc552ad7bf15ca468adc3cad9d05b624490_185_185'] + .js-temp-notes-holder") do
-          #should have_css(".js-note-preview", text: "One comment on line 185")
-        #end
+      #within("tr[id='4735dfc552ad7bf15ca468adc3cad9d05b624490_185_185'] + .js-temp-notes-holder") do
+      #should have_css(".js-note-preview", text: "One comment on line 185")
+      #end
 
-        #within("tr[id='342e16cbbd482ac2047dc679b2749d248cc1428f_18_17'] + .js-temp-notes-holder") do
-          #should have_css(".js-note-preview", text: "Another comment on line 17")
-        #end
+      #within("tr[id='342e16cbbd482ac2047dc679b2749d248cc1428f_18_17'] + .js-temp-notes-holder") do
+      #should have_css(".js-note-preview", text: "Another comment on line 17")
+      #end
       #end
     end
 
@@ -238,39 +242,38 @@ describe "On a merge request diff", js: true, focus: true do
 
       # TODO: fix
       #it "should remove last note of a discussion" do
-        #within("tr[id='342e16cbbd482ac2047dc679b2749d248cc1428f_18_17'] + .notes-holder") do
-          #find(".js-note-delete").click
-        #end
-
-        #should_not have_css(".note_holder")
+      # within("tr[id='342e16cbbd482ac2047dc679b2749d248cc1428f_18_17'] + .notes-holder") do
+      #   find(".js-note-delete").click
+      # end
+      # should_not have_css(".note_holder")
       #end
     end
   end
 
   # TODO: fix
   #describe "when replying to a note" do
-    #before do
-      ## create first note
-      #find('a[data-line-code="4735dfc552ad7bf15ca468adc3cad9d05b624490_184_184"]').click
+  #before do
+  ## create first note
+  # find('a[data-line-code="4735dfc552ad7bf15ca468adc3cad9d05b624490_184_184"]').click
 
-      #within(".js-temp-notes-holder") do
-        #fill_in "note[note]", with: "One comment on line 184"
-        #click_button("Add Comment")
-      #end
+  # within(".js-temp-notes-holder") do
+  # fill_in "note[note]", with: "One comment on line 184"
+  # click_button("Add Comment")
+  #end
 
-      #within(".js-temp-notes-holder") do
-        #find(".js-discussion-reply-button").click
-        #fill_in "note[note]", with: "An additional comment in reply"
-        #click_button("Add Comment")
-      #end
-    #end
-
-    #it 'should be inserted and form removed from reply' do
-      #should have_content("An additional comment in reply")
-      #within(".notes_holder") { should have_css(".note", count: 2) }
-      #within(".notes_holder") { should have_no_css("form") }
-      #within(".notes_holder") { should have_link("Reply") }
-    #end
+  # within(".js-temp-notes-holder") do
+  # find(".js-discussion-reply-button").click
+  # fill_in "note[note]", with: "An additional comment in reply"
+  # click_button("Add Comment")
+  # end
+  #end
+
+  #it 'should be inserted and form removed from reply' do
+  # should have_content("An additional comment in reply")
+  # within(".notes_holder") { should have_css(".note", count: 2) }
+  # within(".notes_holder") { should have_no_css("form") }
+  # within(".notes_holder") { should have_link("Reply") }
+  # end
   #end
 end
 

spec/features/profile_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe "Profile account page" do
   before(:each) { enable_observers }
+  after(:each) {disable_observers}
   let(:user) { create(:user) }
 
   before do

spec/features/projects_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe "Projects" do
   before(:each) { enable_observers }
+  after(:each) {disable_observers}
   before { login_as :user }
 
   describe "DELETE /projects/:id" do

spec/features/security/project_access_spec.rb

@@ -14,10 +14,10 @@ describe "Application access" do
   end
 
   describe "Project" do
-    let(:project)  { create(:project_with_code) }
+    let(:project) { create(:project_with_code) }
 
-    let(:master)   { create(:user) }
-    let(:guest)    { create(:user) }
+    let(:master) { create(:user) }
+    let(:guest) { create(:user) }
     let(:reporter) { create(:user) }
 
     before do
@@ -108,7 +108,7 @@ describe "Application access" do
     describe "GET /project_code/blob" do
       before do
         commit = project.repository.commit
-        path = commit.tree.contents.select { |i| i.is_a?(Grit::Blob)}.first.name
+        path = commit.tree.contents.select { |i| i.is_a?(Grit::Blob) }.first.name
         @blob_path = project_blob_path(project, File.join(commit.id, path))
       end
 
@@ -232,13 +232,13 @@ describe "Application access" do
 
 
   describe "PublicProject" do
-    let(:project)  { create(:project_with_code) }
+    let(:project) { create(:project_with_code) }
 
-    let(:master)   { create(:user) }
-    let(:guest)    { create(:user) }
+    let(:master) { create(:user) }
+    let(:guest) { create(:user) }
     let(:reporter) { create(:user) }
 
-    let(:admin)    { create(:user) }
+    let(:admin) { create(:user) }
 
     before do
       # public project
@@ -339,7 +339,7 @@ describe "Application access" do
     describe "GET /project_code/blob" do
       before do
         commit = project.repository.commit
-        path = commit.tree.contents.select { |i| i.is_a?(Grit::Blob)}.first.name
+        path = commit.tree.contents.select { |i| i.is_a?(Grit::Blob) }.first.name
         @blob_path = project_blob_path(project, File.join(commit.id, path))
       end
 

spec/helpers/gitlab_markdown_helper_spec.rb

@@ -9,7 +9,7 @@ describe GitlabMarkdownHelper do
   let(:user)          { create(:user, username: 'gfm') }
   let(:commit)        { project.repository.commit }
   let(:issue)         { create(:issue, project: project) }
-  let(:merge_request) { create(:merge_request, project: project) }
+  let(:merge_request) { create(:merge_request, source_project: project, target_project: project) }
   let(:snippet)       { create(:project_snippet, project: project) }
   let(:member)        { project.users_projects.where(user_id: user).first }
 

spec/lib/gitlab/satellite/action_spec.rb

+require 'spec_helper'
+
+describe 'Gitlab::Satellite::Action' do
+  let(:project) { create(:project_with_code) }
+  let(:user) { create(:user) }
+
+  describe '#prepare_satellite!' do
+
+    it 'create a repository with a parking branch and one remote: origin' do
+      repo = project.satellite.repo
+
+      #now lets dirty it up
+
+      starting_remote_count = repo.git.list_remotes.size
+      starting_remote_count.should >= 1
+      #kind of hookey way to add a second remote
+      origin_uri = repo.git.remote({v: true}).split(" ")[1]
+    begin
+      repo.git.remote({raise: true}, 'add', 'another-remote', origin_uri)
+      repo.git.branch({raise: true}, 'a-new-branch')
+
+      repo.heads.size.should > (starting_remote_count)
+      repo.git.remote().split(" ").size.should > (starting_remote_count)
+    rescue
+    end
+
+      repo.git.config({}, "user.name", "#{user.name} -- foo")
+      repo.git.config({}, "user.email", "#{user.email} -- foo")
+      repo.config['user.name'].should =="#{user.name} -- foo"
+      repo.config['user.email'].should =="#{user.email} -- foo"
+
+
+      #These must happen in the context of the satellite directory...
+      satellite_action = Gitlab::Satellite::Action.new(user, project)
+      project.satellite.lock {
+        #Now clean it up, use send to get around prepare_satellite! being protected
+        satellite_action.send(:prepare_satellite!, repo)
+      }
+
+      #verify it's clean
+      heads = repo.heads.map(&:name)
+      heads.size.should == 1
+      heads.include?(Gitlab::Satellite::Satellite::PARKING_BRANCH).should == true
+      remotes = repo.git.remote().split(' ')
+      remotes.size.should == 1
+      remotes.include?('origin').should == true
+      repo.config['user.name'].should ==user.name
+      repo.config['user.email'].should ==user.email
+    end
+  end
+
+  describe '#in_locked_and_timed_satellite' do
+
+    it 'should make use of a lockfile' do
+      repo = project.satellite.repo
+      called = false
+
+      #set assumptions
+      File.rm(project.satellite.lock_file) unless !File.exists? project.satellite.lock_file
+
+      File.exists?(project.satellite.lock_file).should be_false
+
+      satellite_action = Gitlab::Satellite::Action.new(user, project)
+      satellite_action.send(:in_locked_and_timed_satellite) do |sat_repo|
+        repo.should == sat_repo
+        (File.exists? project.satellite.lock_file).should be_true
+        called = true
+      end
+
+      called.should be_true
+
+    end
+
+    it 'should be able to use the satellite after locking' do
+      repo = project.satellite.repo
+      called = false
+
+      # Set base assumptions
+      if File.exists? project.satellite.lock_file
+        FileLockStatusChecker.new(project.satellite.lock_file).flocked?.should be_false
+      end
+
+      satellite_action = Gitlab::Satellite::Action.new(user, project)
+      satellite_action.send(:in_locked_and_timed_satellite) do |sat_repo|
+        called = true
+        repo.should == sat_repo
+        (File.exists? project.satellite.lock_file).should be_true
+        FileLockStatusChecker.new(project.satellite.lock_file).flocked?.should be_true
+      end
+
+      called.should be_true
+      FileLockStatusChecker.new(project.satellite.lock_file).flocked?.should be_false
+
+    end
+
+    class FileLockStatusChecker < File
+      def flocked? &block
+        status = flock LOCK_EX|LOCK_NB
+        case status
+          when false
+            return true
+          when 0
+            begin
+              block ? block.call : false
+            ensure
+              flock LOCK_UN
+            end
+          else
+            raise SystemCallError, status
+        end
+      end
+    end
+
+  end
+end
+

spec/lib/gitlab/satellite/merge_action_spec.rb

+require 'spec_helper'
+
+describe 'Gitlab::Satellite::MergeAction' do
+  before(:each) do
+#    TestEnv.init(mailer: false, init_repos: true, repos: true)
+    @master = ['master', 'bcf03b5de6c33f3869ef70d68cf06e679d1d7f9a']
+    @one_after_stable = ['stable', '6ea87c47f0f8a24ae031c3fff17bc913889ecd00'] #this commit sha is one after stable
+    @wiki_branch = ['wiki', '635d3e09b72232b6e92a38de6cc184147e5bcb41'] #this is the commit sha where the wiki branch goes off from master
+    @conflicting_metior = ['metior', '313d96e42b313a0af5ab50fa233bf43e27118b3f'] #this branch conflicts with the wiki branch
+
+    #these commits are quite close together, itended to make string diffs/format patches small
+    @close_commit1 = ['2_3_notes_fix', '8470d70da67355c9c009e4401746b1d5410af2e3']
+    @close_commit2 = ['scss_refactoring', 'f0f14c8eaba69ebddd766498a9d0b0e79becd633']
+  end
+
+  let(:project) { create(:project_with_code) }
+  let(:merge_request) { create(:merge_request, source_project: project, target_project: project) }
+  let(:merge_request_fork) { create(:merge_request) }
+  describe '#commits_between' do
+    def verify_commits(commits, first_commit_sha, last_commit_sha)
+      commits.each { |commit| commit.class.should == Gitlab::Git::Commit }
+      commits.first.id.should == first_commit_sha
+      commits.last.id.should == last_commit_sha
+    end
+
+    context 'on fork' do
+      it 'should get proper commits between' do
+        merge_request_fork.target_branch = @one_after_stable[0]
+        merge_request_fork.source_branch = @master[0]
+        commits = Gitlab::Satellite::MergeAction.new(merge_request_fork.author, merge_request_fork).commits_between
+        verify_commits(commits, @one_after_stable[1], @master[1])
+
+        merge_request_fork.target_branch = @wiki_branch[0]
+        merge_request_fork.source_branch = @master[0]
+        commits = Gitlab::Satellite::MergeAction.new(merge_request_fork.author, merge_request_fork).commits_between
+        verify_commits(commits, @wiki_branch[1], @master[1])
+      end
+    end
+
+    context 'between branches' do
+      it 'should raise exception -- not expected to be used by non forks' do
+        merge_request.target_branch = @one_after_stable[0]
+        merge_request.source_branch = @master[0]
+        expect {Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request).commits_between}.to raise_error
+
+        merge_request.target_branch = @wiki_branch[0]
+        merge_request.source_branch = @master[0]
+        expect {Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request).commits_between}.to raise_error
+      end
+    end
+  end
+
+  describe '#format_patch' do
+    context 'on fork' do
+      it 'should build a format patch' do
+        merge_request_fork.target_branch = @close_commit1[0]
+        merge_request_fork.source_branch = @close_commit2[0]
+        patch = Gitlab::Satellite::MergeAction.new(merge_request_fork.author, merge_request_fork).format_patch
+        (patch.include? "From #{@close_commit2[1]}").should be_true
+        (patch.include? "From #{@close_commit1[1]}").should be_true
+      end
+    end
+
+    context 'between branches' do
+      it 'should build a format patch' do
+        merge_request.target_branch = @close_commit1[0]
+        merge_request.source_branch = @close_commit2[0]
+        patch = Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request).format_patch
+        (patch.include? "From #{@close_commit2[1]}").should be_true
+        (patch.include? "From #{@close_commit1[1]}").should be_true
+      end
+    end
+  end
+
+  describe '#diffs_between_satellite tested against diff_in_satellite' do
+
+    def is_a_matching_diff(diff, diffs)
+      diff_count = diff.scan('diff --git').size
+      diff_count.should >= 1
+      diffs.size.should == diff_count
+      diffs.each do |a_diff|
+        a_diff.class.should == Gitlab::Git::Diff
+        (diff.include? a_diff.diff).should be_true
+      end
+    end
+
+    context 'on fork' do
+      it 'should get proper diffs' do
+        merge_request_fork.target_branch = @close_commit1[0]
+        merge_request_fork.source_branch = @master[0]
+        diffs = Gitlab::Satellite::MergeAction.new(merge_request_fork.author, merge_request_fork).diffs_between_satellite
+
+        merge_request_fork.target_branch = @close_commit1[0]
+        merge_request_fork.source_branch = @master[0]
+        diff = Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request_fork).diff_in_satellite
+
+        is_a_matching_diff(diff, diffs)
+      end
+    end
+
+    context 'between branches' do
+      it 'should get proper diffs' do
+        merge_request.target_branch = @close_commit1[0]
+        merge_request.source_branch = @master[0]
+        expect{Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request).diffs_between_satellite}.to raise_error
+      end
+    end
+  end
+
+  describe '#can_be_merged?' do
+    context 'on fork' do
+      it 'return true or false depending on if something is mergable' do
+        merge_request_fork.target_branch = @one_after_stable[0]
+        merge_request_fork.source_branch = @master[0]
+        Gitlab::Satellite::MergeAction.new(merge_request_fork.author, merge_request_fork).can_be_merged?.should be_true
+
+        merge_request_fork.target_branch = @conflicting_metior[0]
+        merge_request_fork.source_branch = @wiki_branch[0]
+        Gitlab::Satellite::MergeAction.new(merge_request_fork.author, merge_request_fork).can_be_merged?.should be_false
+      end
+    end
+
+    context 'between branches' do
+      it 'return true or false depending on if something is mergable' do
+        merge_request.target_branch = @one_after_stable[0]
+        merge_request.source_branch = @master[0]
+        Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request).can_be_merged?.should be_true
+
+        merge_request.target_branch = @conflicting_metior[0]
+        merge_request.source_branch = @wiki_branch[0]
+        Gitlab::Satellite::MergeAction.new(merge_request.author, merge_request).can_be_merged?.should be_false
+      end
+    end
+  end
+end
\ No newline at end of file

spec/mailers/notify_spec.rb

@@ -167,7 +167,7 @@ describe Notify do
       end
 
       context 'for merge requests' do
-        let(:merge_request) { create(:merge_request, assignee: assignee, project: project) }
+        let(:merge_request) { create(:merge_request, assignee: assignee, source_project: project, target_project: project) }
 
         describe 'that are new' do
           subject { Notify.new_merge_request_email(merge_request.assignee_id, merge_request.id) }
@@ -311,7 +311,7 @@ describe Notify do
       end
 
       describe 'on a merge request' do
-        let(:merge_request) { create(:merge_request, project: project) }
+        let(:merge_request) { create(:merge_request, source_project: project, target_project: project) }
         let(:note_on_merge_request_path) { project_merge_request_path(project, merge_request, anchor: "note_#{note.id}") }
         before(:each) { note.stub(:noteable).and_return(merge_request) }
 

spec/models/commit_spec.rb

@@ -3,7 +3,6 @@ require 'spec_helper'
 describe Commit do
   let(:commit) { create(:project_with_code).repository.commit }
 
-
   describe '#title' do
     it "returns no_commit_message when safe_message is blank" do
       commit.stub(:safe_message).and_return('')

spec/models/forked_project_link_spec.rb

@@ -12,9 +12,9 @@
 require 'spec_helper'
 
 describe ForkedProjectLink, "add link on fork" do
-  let(:project_from) {create(:project)}
-  let(:namespace) {create(:namespace)}
-  let(:user) {create(:user, namespace: namespace)}
+  let(:project_from) { create(:project) }
+  let(:namespace) { create(:namespace) }
+  let(:user) { create(:user, namespace: namespace) }
 
   before do
     @project_to = fork_project(project_from, user)
@@ -30,9 +30,9 @@ describe ForkedProjectLink, "add link on fork" do
 end
 
 describe :forked_from_project do
-  let(:forked_project_link) {build(:forked_project_link)}
-  let(:project_from) {create(:project)}
-  let(:project_to) {create(:project, forked_project_link: forked_project_link)}
+  let(:forked_project_link) { build(:forked_project_link) }
+  let(:project_from) { create(:project) }
+  let(:project_to) { create(:project, forked_project_link: forked_project_link) }
 
 
   before :each do

spec/models/merge_request_spec.rb

@@ -41,15 +41,12 @@ describe MergeRequest do
     it { should include_module(Issuable) }
   end
 
-  describe "#mr_and_commit_notes" do
-
-  end
 
   describe "#mr_and_commit_notes" do
     let!(:merge_request) { create(:merge_request) }
 
     before do
-      merge_request.stub(:commits) { [merge_request.project.repository.commit] }
+      merge_request.stub(:commits) { [merge_request.source_project.repository.commit] }
       create(:note, commit_id: merge_request.commits.first.id, noteable_type: 'Commit')
       create(:note, noteable: merge_request)
     end
@@ -71,4 +68,38 @@ describe MergeRequest do
       subject.is_being_reassigned?.should be_false
     end
   end
+
+  describe '#for_fork?' do
+    it 'returns true if the merge request is for a fork' do
+      subject.source_project = create(:source_project)
+      subject.target_project = create(:target_project)
+
+      subject.for_fork?.should be_true
+    end
+    it 'returns false if is not for a fork' do
+      subject.source_project = create(:source_project)
+      subject.target_project = subject.source_project
+      subject.for_fork?.should be_false
+    end
+  end
+
+  describe '#allow_source_branch_removal?' do
+    it 'should not allow removal when mr is a fork' do
+
+      subject.disallow_source_branch_removal?.should be_true
+    end
+    it 'should not allow removal when the mr is not a fork, but the source branch is the root reference' do
+      subject.target_project = subject.source_project
+      subject.source_branch = subject.source_project.repository.root_ref
+      subject.disallow_source_branch_removal?.should be_true
+    end
+
+    it 'should not disallow removal when the mr is not a fork, and but source branch is not the root reference' do
+      subject.target_project = subject.source_project
+      subject.source_branch = "Something Different #{subject.source_project.repository.root_ref}"
+      subject.for_fork?.should be_false
+      subject.disallow_source_branch_removal?.should be_false
+    end
+  end
+
 end

spec/models/note_spec.rb

@@ -144,12 +144,12 @@ describe Note do
   end
 
   describe '#create_status_change_note' do
-    let(:project)  { create(:project) }
-    let(:thing)    { create(:issue, project: project) }
-    let(:author)   { create(:user) }
-    let(:status)   { 'new_status' }
+    let(:project) { create(:project) }
+    let(:thing) { create(:issue, project: project) }
+    let(:author) { create(:user) }
+    let(:status) { 'new_status' }
 
-    subject { Note.create_status_change_note(thing, author, status) }
+    subject { Note.create_status_change_note(thing, project, author, status) }
 
     it 'creates and saves a Note' do
       should be_a Note
@@ -157,9 +157,9 @@ describe Note do
     end
 
     its(:noteable) { should == thing }
-    its(:project)  { should == thing.project }
-    its(:author)   { should == author }
-    its(:note)     { should =~ /Status changed to #{status}/ }
+    its(:project) { should == thing.project }
+    its(:author) { should == author }
+    its(:note) { should =~ /Status changed to #{status}/ }
   end
 
   describe :authorization do

spec/models/project_spec.rb

@@ -26,6 +26,9 @@
 require 'spec_helper'
 
 describe Project do
+  before(:each) { enable_observers }
+  after(:each) { disable_observers }
+
   describe "Associations" do
     it { should belong_to(:group) }
     it { should belong_to(:namespace) }
@@ -95,12 +98,11 @@ describe Project do
   end
 
   describe "last_activity methods" do
-    before { enable_observers }
-    let(:project)    { create(:project) }
+    let(:project) { create(:project) }
     let(:last_event) { double(created_at: Time.now) }
 
     describe "last_activity" do
-      it "should alias last_activity to last_event"do
+      it "should alias last_activity to last_event" do
         project.stub(last_event: last_event)
         project.last_activity.should == last_event
       end
@@ -122,7 +124,7 @@ describe Project do
     let(:project) { create(:project_with_code) }
 
     before do
-      @merge_request = create(:merge_request, project: project)
+      @merge_request = create(:merge_request, source_project: project, target_project: project)
       @key = create(:key, user_id: project.owner.id)
     end
 

spec/observers/activity_observer_spec.rb

@@ -8,18 +8,6 @@ describe ActivityObserver do
     it { @event.project.should == project }
   end
 
-  describe "Merge Request created" do
-    before do
-      MergeRequest.observers.enable :activity_observer do
-        @merge_request = create(:merge_request, project: project)
-        @event = Event.last
-      end
-    end
-
-    it_should_be_valid_event
-    it { @event.action.should == Event::CREATED }
-    it { @event.target.should == @merge_request }
-  end
 
   describe "Issue created" do
     before do

spec/observers/issue_observer_spec.rb

@@ -26,14 +26,13 @@ describe IssueObserver do
       before { mock_issue.stub(state: 'closed') }
 
       it 'note is created if the issue is being closed' do
-        Note.should_receive(:create_status_change_note).with(mock_issue, some_user, 'closed')
+        Note.should_receive(:create_status_change_note).with(mock_issue, mock_issue.project, some_user, 'closed')
 
         subject.after_close(mock_issue, nil)
       end
 
       it 'trigger notification to send emails' do
         subject.notification.should_receive(:close_issue).with(mock_issue, some_user)
-
         subject.after_close(mock_issue, nil)
       end
     end
@@ -42,8 +41,7 @@ describe IssueObserver do
       before { mock_issue.stub(state: 'reopened') }
 
       it 'note is created if the issue is being reopened' do
-        Note.should_receive(:create_status_change_note).with(mock_issue, some_user, 'reopened')
-
+        Note.should_receive(:create_status_change_note).with(mock_issue, mock_issue.project, some_user, 'reopened')
         subject.after_reopen(mock_issue, nil)
       end
     end

spec/observers/merge_request_observer_spec.rb

 require 'spec_helper'
 
 describe MergeRequestObserver do
-  let(:some_user)      { create :user }
-  let(:assignee)       { create :user }
-  let(:author)         { create :user }
-  let(:mr_mock)    { double(:merge_request, id: 42, assignee: assignee, author: author) }
-  let(:assigned_mr)   { create(:merge_request, assignee: assignee, author: author) }
+  let(:some_user) { create :user }
+  let(:assignee) { create :user }
+  let(:author) { create :user }
+  let(:mr_mock) { double(:merge_request, id: 42, assignee: assignee, author: author) }
+  let(:assigned_mr) { create(:merge_request, assignee: assignee, author: author) }
   let(:unassigned_mr) { create(:merge_request, author: author) }
-  let(:closed_assigned_mr)   { create(:closed_merge_request, assignee: assignee, author: author) }
+  let(:closed_assigned_mr) { create(:closed_merge_request, assignee: assignee, author: author) }
   let(:closed_unassigned_mr) { create(:closed_merge_request, author: author) }
 
   before { subject.stub(:current_user).and_return(some_user) }
   before { subject.stub(notification: mock('NotificationService').as_null_object) }
+  before { mr_mock.stub(:author_id) }
+  before { mr_mock.stub(:target_project) }
   before(:each) { enable_observers }
-
+  after(:each) { disable_observers }
 
   subject { MergeRequestObserver.instance }
 
@@ -30,7 +32,7 @@ describe MergeRequestObserver do
     end
 
     it 'is called when a merge request is changed' do
-      changed = create(:merge_request, project: create(:project))
+      changed = create(:merge_request, source_project: create(:project))
       subject.should_receive(:after_update)
 
       MergeRequest.observers.enable :merge_request_observer do
@@ -59,13 +61,13 @@ describe MergeRequestObserver do
   context '#after_close' do
     context 'a status "closed"' do
       it 'note is created if the merge request is being closed' do
-        Note.should_receive(:create_status_change_note).with(assigned_mr, some_user, 'closed')
+        Note.should_receive(:create_status_change_note).with(assigned_mr, assigned_mr.target_project, some_user, 'closed')
 
         assigned_mr.close
       end
 
       it 'notification is delivered only to author if the merge request is being closed' do
-        Note.should_receive(:create_status_change_note).with(unassigned_mr, some_user, 'closed')
+        Note.should_receive(:create_status_change_note).with(unassigned_mr, unassigned_mr.target_project, some_user, 'closed')
 
         unassigned_mr.close
       end
@@ -75,16 +77,41 @@ describe MergeRequestObserver do
   context '#after_reopen' do
     context 'a status "reopened"' do
       it 'note is created if the merge request is being reopened' do
-        Note.should_receive(:create_status_change_note).with(closed_assigned_mr, some_user, 'reopened')
+        Note.should_receive(:create_status_change_note).with(closed_assigned_mr, closed_assigned_mr.target_project, some_user, 'reopened')
 
         closed_assigned_mr.reopen
       end
 
       it 'notification is delivered only to author if the merge request is being reopened' do
-        Note.should_receive(:create_status_change_note).with(closed_unassigned_mr, some_user, 'reopened')
+        Note.should_receive(:create_status_change_note).with(closed_unassigned_mr, closed_unassigned_mr.target_project, some_user, 'reopened')
 
         closed_unassigned_mr.reopen
       end
     end
   end
+
+  describe "Merge Request created" do
+    def self.it_should_be_valid_event
+      it { @event.should_not be_nil }
+      it { @event.should_not be_nil }
+      it { @event.project.should == project }
+      it { @event.project.should == project }
+    end
+
+    let(:project) { create(:project) }
+    before do
+      TestEnv.enable_observers
+      @merge_request = create(:merge_request, source_project: project, target_project: project)
+      @event = Event.last
+    end
+
+    after do
+      TestEnv.disable_observers
+    end
+
+    it_should_be_valid_event
+    it { @event.action.should == Event::CREATED }
+    it { @event.target.should == @merge_request }
+  end
+
 end

spec/observers/user_observer_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe UserObserver do
   before(:each) { enable_observers }
+  after(:each) {disable_observers}
   subject { UserObserver.instance }
   before { subject.stub(notification: mock('NotificationService').as_null_object) }
 

spec/observers/users_project_observer_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe UsersProjectObserver do
   before(:each) { enable_observers }
+  after(:each) { disable_observers }
 
   let(:user) { create(:user) }
   let(:project) { create(:project) }

spec/requests/api/merge_requests_spec.rb

@@ -3,10 +3,12 @@ require "spec_helper"
 describe API::API do
   include ApiHelpers
 
-  let(:user) { create(:user ) }
-  let!(:project) { create(:project_with_code, creator_id: user.id) }
-  let!(:merge_request) { create(:merge_request, author: user, assignee: user, project: project, title: "Test") }
-  before { project.team << [user, :reporters] }
+  let(:user) { create(:user) }
+  let!(:project) {create(:project_with_code, creator_id: user.id) }
+  let!(:merge_request) { create(:merge_request, author: user, assignee: user, source_project: project, target_project: project, title: "Test") }
+  before {
+    project.team << [user, :reporters]
+  }
 
   describe "GET /projects/:id/merge_requests" do
     context "when unauthenticated" do
@@ -40,35 +42,104 @@ describe API::API do
   end
 
   describe "POST /projects/:id/merge_requests" do
-    it "should return merge_request" do
-      post api("/projects/#{project.id}/merge_requests", user),
-        title: 'Test merge_request', source_branch: "stable", target_branch: "master", author: user
-      response.status.should == 201
-      json_response['title'].should == 'Test merge_request'
-    end
+    context 'between branches projects' do
+      it "should return merge_request" do
+        post api("/projects/#{project.id}/merge_requests", user),
+             title: 'Test merge_request', source_branch: "stable", target_branch: "master", author: user
+        response.status.should == 201
+        json_response['title'].should == 'Test merge_request'
+      end
 
-    it "should return 422 when source_branch equals target_branch" do
-      post api("/projects/#{project.id}/merge_requests", user),
-        title: "Test merge_request", source_branch: "master", target_branch: "master", author: user
-      response.status.should == 422
-    end
+      it "should return 422 when source_branch equals target_branch" do
+        post api("/projects/#{project.id}/merge_requests", user),
+             title: "Test merge_request", source_branch: "master", target_branch: "master", author: user
+        response.status.should == 422
+      end
 
-    it "should return 400 when source_branch is missing" do
-      post api("/projects/#{project.id}/merge_requests", user),
-        title: "Test merge_request", target_branch: "master", author: user
-      response.status.should == 400
-    end
+      it "should return 400 when source_branch is missing" do
+        post api("/projects/#{project.id}/merge_requests", user),
+             title: "Test merge_request", target_branch: "master", author: user
+        response.status.should == 400
+      end
 
-    it "should return 400 when target_branch is missing" do
-      post api("/projects/#{project.id}/merge_requests", user),
-        title: "Test merge_request", source_branch: "stable", author: user
-      response.status.should == 400
+      it "should return 400 when target_branch is missing" do
+        post api("/projects/#{project.id}/merge_requests", user),
+             title: "Test merge_request", source_branch: "stable", author: user
+        response.status.should == 400
+      end
+
+      it "should return 400 when title is missing" do
+        post api("/projects/#{project.id}/merge_requests", user),
+             target_branch: 'master', source_branch: 'stable'
+        response.status.should == 400
+      end
     end
 
-    it "should return 400 when title is missing" do
-      post api("/projects/#{project.id}/merge_requests", user),
-        target_branch: 'master', source_branch: 'stable'
-      response.status.should == 400
+    context 'forked projects' do
+      let!(:user2) {create(:user)}
+      let!(:forked_project_link) { build(:forked_project_link) }
+      let!(:fork_project) {  create(:source_project_with_code, forked_project_link: forked_project_link,  namespace: user2.namespace, creator_id: user2.id)  }
+      let!(:unrelated_project) {  create(:target_project_with_code,  namespace: user2.namespace, creator_id: user2.id)  }
+
+      before :each do |each|
+        fork_project.team << [user2, :reporters]
+        forked_project_link.forked_from_project = project
+        forked_project_link.forked_to_project = fork_project
+        forked_project_link.save!
+      end
+
+      it "should return merge_request" do
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             title: 'Test merge_request', source_branch: "stable", target_branch: "master", author: user2, target_project_id: project.id
+        response.status.should == 201
+        json_response['title'].should == 'Test merge_request'
+      end
+
+      it "should not return 422 when source_branch equals target_branch" do
+        project.id.should_not == fork_project.id
+        fork_project.forked?.should be_true
+        fork_project.forked_from_project.should == project
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             title: 'Test merge_request', source_branch: "master", target_branch: "master", author: user2, target_project_id: project.id
+        response.status.should == 201
+        json_response['title'].should == 'Test merge_request'
+      end
+
+      it "should return 400 when source_branch is missing" do
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             title: 'Test merge_request', target_branch: "master", author: user2, target_project_id: project.id
+        response.status.should == 400
+      end
+
+      it "should return 400 when target_branch is missing" do
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             title: 'Test merge_request', target_branch: "master", author: user2, target_project_id: project.id
+        response.status.should == 400
+      end
+
+      it "should return 400 when title is missing" do
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             target_branch: 'master', source_branch: 'stable', author: user2, target_project_id: project.id
+        response.status.should == 400
+      end
+
+      it "should return 400 when target_branch is specified and not a forked project" do
+        post api("/projects/#{project.id}/merge_requests", user),
+             title: 'Test merge_request', target_branch: 'master', source_branch: 'stable', author: user, target_project_id: fork_project.id
+        response.status.should == 400
+      end
+
+      it "should return 400 when target_branch is specified and for a different fork" do
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             title: 'Test merge_request', target_branch: 'master', source_branch: 'stable', author: user2, target_project_id: unrelated_project.id
+        response.status.should == 400
+      end
+
+      it "should return 201 when target_branch is specified and for the same project" do
+        post api("/projects/#{fork_project.id}/merge_requests", user2),
+             title: 'Test merge_request', target_branch: 'master', source_branch: 'stable', author: user2, target_project_id: fork_project.id
+        response.status.should == 201
+      end
     end
   end
 
@@ -97,14 +168,14 @@ describe API::API do
 
     it "should return 422 when source_branch and target_branch are renamed the same" do
       put api("/projects/#{project.id}/merge_request/#{merge_request.id}", user),
-        source_branch: "master", target_branch: "master"
+          source_branch: "master", target_branch: "master"
       response.status.should == 422
     end
 
     it "should return merge_request with renamed target_branch" do
-      put api("/projects/#{project.id}/merge_request/#{merge_request.id}", user), target_branch: "test"
+      put api("/projects/#{project.id}/merge_request/#{merge_request.id}", user), target_branch: "wiki"
       response.status.should == 200
-      json_response['target_branch'].should == 'test'
+      json_response['target_branch'].should == 'wiki'
     end
   end
 

spec/requests/api/milestones_spec.rb

@@ -3,6 +3,7 @@ require 'spec_helper'
 describe API::API do
   include ApiHelpers
   before(:each) { enable_observers }
+  after(:each) {disable_observers}
 
   let(:user) { create(:user) }
   let!(:project) { create(:project, namespace: user.namespace ) }

spec/requests/api/notes_spec.rb

@@ -6,7 +6,7 @@ describe API::API do
   let(:user) { create(:user) }
   let!(:project) { create(:project, namespace: user.namespace ) }
   let!(:issue) { create(:issue, project: project, author: user) }
-  let!(:merge_request) { create(:merge_request, project: project, author: user) }
+  let!(:merge_request) { create(:merge_request, source_project: project, target_project: project, author: user) }
   let!(:snippet) { create(:project_snippet, project: project, author: user) }
   let!(:issue_note) { create(:note, noteable: issue, project: project, author: user) }
   let!(:merge_request_note) { create(:note, noteable: merge_request, project: project, author: user) }

spec/requests/api/projects_spec.rb

@@ -3,6 +3,7 @@ require 'spec_helper'
 describe API::API do
   include ApiHelpers
   before(:each) { enable_observers }
+  after(:each) { disable_observers }
 
   let(:user) { create(:user) }
   let(:user2) { create(:user) }
@@ -475,7 +476,6 @@ describe API::API do
     end
   end
 
-
   describe "GET /projects/:id/snippets" do
     it "should return an array of project snippets" do
       get api("/projects/#{project.id}/snippets", user)

spec/requests/api/repositories_spec.rb

@@ -3,6 +3,7 @@ require 'spec_helper'
 describe API::API do
   include ApiHelpers
   before(:each) { enable_observers }
+  after(:each) {disable_observers}
 
   let(:user) { create(:user) }
   let(:user2) { create(:user) }

spec/services/notification_service_spec.rb

@@ -2,7 +2,6 @@ require 'spec_helper'
 
 describe NotificationService do
   let(:notification) { NotificationService.new }
-
   describe 'Keys' do
     describe :new_key do
       let(:key) { create(:personal_key) }
@@ -156,7 +155,8 @@ describe NotificationService do
     let(:merge_request) { create :merge_request, assignee: create(:user) }
 
     before do
-      build_team(merge_request.project)
+      build_team(merge_request.source_project)
+      build_team(merge_request.target_project)
     end
 
     describe :new_merge_request do
@@ -232,11 +232,16 @@ describe NotificationService do
     end
   end
 
+  let(:u_watcher) { create(:user, notification_level: Notification::N_WATCH) }
+  let(:u_participating) { create(:user, notification_level: Notification::N_PARTICIPATING) }
+  let(:u_disabled) { create(:user, notification_level: Notification::N_DISABLED) }
+  let(:u_mentioned) { create(:user, username: 'mention', notification_level: Notification::N_WATCH) }
+
   def build_team(project)
-    @u_watcher = create(:user, notification_level: Notification::N_WATCH)
-    @u_participating = create(:user, notification_level: Notification::N_PARTICIPATING)
-    @u_disabled = create(:user, notification_level: Notification::N_DISABLED)
-    @u_mentioned = create(:user, username: 'mention', notification_level: Notification::N_WATCH)
+    @u_watcher = u_watcher
+    @u_participating = u_participating
+    @u_disabled = u_disabled
+    @u_mentioned = u_mentioned
 
     project.team << [@u_watcher, :master]
     project.team << [@u_participating, :master]

spec/services/project_transfer_service_spec.rb

@@ -2,6 +2,7 @@ require 'spec_helper'
 
 describe ProjectTransferService do
   before(:each) { enable_observers }
+  after(:each) {disable_observers}
 
   context 'namespace -> namespace' do
     let(:user) { create(:user) }
@@ -24,6 +25,7 @@ describe ProjectTransferService do
       @result = service.transfer(project, nil)
     end
 
+
     it { @result.should be_true }
     it { project.namespace.should == nil }
   end