Merge Request on forked projects

The good:

 - You can do a merge request for a forked commit and it will merge properly (i.e. it does work).
 - Push events take into account merge requests on forked projects
 - Tests around merge_actions now present, spinach, and other rspec tests
 - Satellites now clean themselves up rather then recreate

The questionable:

 - Events only know about target projects
 - Project's merge requests only hold on to MR's where they are the target
 - All operations performed in the satellite

The bad:

  -  Duplication between project's repositories and satellites (e.g. commits_between)

(for reference: http://feedback.gitlab.com/forums/176466-general/suggestions/3456722-merge-requests-between-projects-repos)

Fixes:

Make test repos/satellites only create when needed
-Spinach/Rspec now only initialize test directory, and setup stubs (things that are relatively cheap)
-project_with_code, source_project_with_code, and target_project_with_code now create/destroy their repos individually
-fixed remote removal
-How to merge renders properly
-Update emails to show project/branches
-Edit MR doesn't set target branch
-Fix some failures on editing/creating merge requests, added a test
-Added back a test around merge request observer
-Clean up project_transfer_spec, Remove duplicate enable/disable observers
-Ensure satellite lock files are cleaned up, Attempted to add some testing around these as well
-Signifant speed ups for tests
-Update formatting ordering in notes_on_merge_requests
-Remove wiki schema update
Fixes for search/search results
-Search results was using by_project for a list of projects, updated this to use in_projects
-updated search results to reference the correct (target) project
-udpated search results to print both sides of the merge request

Change-Id: I19407990a0950945cc95d62089cbcc6262dab1a8

1 files changed, 42 insertions, 5 deletions

diff --git a/app/mailers/emails/merge_requests.rb b/app/mailers/emails/merge_requests.rb
index de47903c0d4..3dc3ddc3efd 100644
--- a/app/mailers/emails/merge_requests.rb
+++ b/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))
+      mail(to: @merge_request.assignee_email, 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