Remove MergeRequest observer

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/observers/merge_request_observer.rb

-class MergeRequestObserver < BaseObserver
-  def after_create(merge_request)
-    event_service.open_mr(merge_request, current_user)
-    notification.new_merge_request(merge_request, current_user)
-    merge_request.create_cross_references!(merge_request.project, current_user)
-    execute_hooks(merge_request)
-  end
-
-  def after_close(merge_request, transition)
-    event_service.close_mr(merge_request, current_user)
-    notification.close_mr(merge_request, current_user)
-    create_note(merge_request)
-    execute_hooks(merge_request)
-  end
-
-  def after_reopen(merge_request, transition)
-    event_service.reopen_mr(merge_request, current_user)
-    create_note(merge_request)
-    execute_hooks(merge_request)
-    merge_request.reload_code
-    merge_request.mark_as_unchecked
-  end
-
-  def after_update(merge_request)
-    notification.reassigned_merge_request(merge_request, current_user) if merge_request.is_being_reassigned?
-
-    merge_request.notice_added_references(merge_request.project, current_user)
-    execute_hooks(merge_request)
-  end
-
-  private
-
-  # Create merge request note with service comment like 'Status changed to closed'
-  def create_note(merge_request)
-    Note.create_status_change_note(merge_request, merge_request.target_project, current_user, merge_request.state, nil)
-  end
-
-  def execute_hooks(merge_request)
-    if merge_request.project
-      merge_request.project.execute_hooks(merge_request.to_hook_data, :merge_request_hooks)
-    end
-  end
-end

config/application.rb

@@ -21,7 +21,6 @@ module Gitlab
     # Activate observers that should always be running.
     config.active_record.observers = :milestone_observer,
                                      :project_activity_cache_observer,
-                                     :merge_request_observer,
                                      :note_observer,
                                      :project_observer,
                                      :system_hook_observer,

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(:project) { create :project }
-  let(:mr_mock) { double(:merge_request, id: 42, assignee: assignee, author: author).as_null_object }
-  let(:assigned_mr) { create(:merge_request, assignee: assignee, author: author, source_project: project) }
-  let(:unassigned_mr) { create(:merge_request, author: author, source_project: project) }
-  let(:closed_assigned_mr) { create(:closed_merge_request, assignee: assignee, author: author, source_project: project) }
-  let(:closed_unassigned_mr) { create(:closed_merge_request, author: author, source_project: project) }
-
-  before { subject.stub(:current_user).and_return(some_user) }
-  before { subject.stub(notification: double('NotificationService').as_null_object) }
-  before { mr_mock.stub(:author_id) }
-  before { mr_mock.stub(:source_project) }
-  before { mr_mock.stub(:source_project) }
-  before { mr_mock.stub(:project) }
-  before { mr_mock.stub(:create_cross_references!).and_return(true) }
-  before { Repository.any_instance.stub(commit: nil) }
-
-  before(:each) { enable_observers }
-  after(:each) { disable_observers }
-
-  subject { MergeRequestObserver.instance }
-
-  describe '#after_create' do
-    it 'trigger notification service' do
-      subject.should_receive(:notification)
-      subject.after_create(mr_mock)
-    end
-
-    it 'creates cross-reference notes' do
-       project = create :project
-       mr_mock.stub(title: "this mr references !#{assigned_mr.id}", project: project)
-       mr_mock.should_receive(:create_cross_references!).with(project, some_user)
-
-       subject.after_create(mr_mock)
-    end
-  end
-
-  context '#after_update' do
-    before(:each) do
-      mr_mock.stub(:is_being_reassigned?).and_return(false)
-      mr_mock.stub(:notice_added_references)
-    end
-
-    it 'is called when a merge request is changed' do
-      changed = create(:merge_request, source_project: project)
-      subject.should_receive(:after_update)
-
-      MergeRequest.observers.enable :merge_request_observer do
-        changed.title = 'I changed'
-        changed.save
-      end
-    end
-
-    it 'checks for new references' do
-      mr_mock.should_receive(:notice_added_references)
-
-      subject.after_update(mr_mock)
-    end
-
-    context 'a notification' do
-      it 'is sent if the merge request is being reassigned' do
-        mr_mock.should_receive(:is_being_reassigned?).and_return(true)
-        subject.should_receive(:notification)
-
-        subject.after_update(mr_mock)
-      end
-
-      it 'is not sent if the merge request is not being reassigned' do
-        mr_mock.should_receive(:is_being_reassigned?).and_return(false)
-        subject.should_not_receive(:notification)
-
-        subject.after_update(mr_mock)
-      end
-    end
-  end
-
-  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, assigned_mr.source_project, some_user, 'closed', nil)
-
-        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, unassigned_mr.source_project, some_user, 'closed', nil)
-
-        unassigned_mr.close
-      end
-    end
-  end
-
-  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, closed_assigned_mr.source_project, some_user, 'reopened', nil)
-
-        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, closed_unassigned_mr.source_project, some_user, 'reopened', nil)
-
-        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
-
-    before do
-      @merge_request = create(:merge_request, source_project: project, target_project: project)
-      @event = Event.last
-    end
-
-    it_should_be_valid_event
-    it { @event.action.should == Event::CREATED }
-    it { @event.target.should == @merge_request }
-  end
-end