Merge branch 'fix-issue-2382' into 'master'

Create a "destroyed Milestone" event and keep Milestone events around in the DB for posterity

Also fix issue where destroying a Milestone would cause odd, transient messages like "created milestone" or "imported milestone".

Now if a milestone is destroyed, at least it will indicate in the activity feed even if it's not clear which milestone was destroyed:

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/c89cc8a0a9fa549deac433f17b890913/image.png)

Closes #2382

See merge request !1227

2 files changed, 14 insertions, 0 deletions

diff --git a/spec/controllers/projects/milestones_controller_spec.rb b/spec/controllers/projects/milestones_controller_spec.rb
index d3868c13202..35446640929 100644
--- a/spec/controllers/projects/milestones_controller_spec.rb
+++ b/spec/controllers/projects/milestones_controller_spec.rb
@@ -15,8 +15,12 @@ describe Projects::MilestonesController do
   describe "#destroy" do
     it "should remove milestone" do
       expect(issue.milestone_id).to eq(milestone.id)
+
       delete :destroy, namespace_id: project.namespace.id, project_id: project.id, id: milestone.id, format: :js
       expect(response).to be_success
+
+      expect(Event.first.action).to eq(Event::DESTROYED)
+
       expect { Milestone.find(milestone.id) }.to raise_exception(ActiveRecord::RecordNotFound)
       issue.reload
       expect(issue.milestone_id).to eq(nil)
diff --git a/spec/services/event_create_service_spec.rb b/spec/services/event_create_service_spec.rb
index 007a9eed192..7756b973ecd 100644
--- a/spec/services/event_create_service_spec.rb
+++ b/spec/services/event_create_service_spec.rb
@@ -99,5 +99,15 @@ describe EventCreateService do
         expect { service.close_milestone(milestone, user) }.to change { Event.count }
       end
     end
+
+    describe :destroy_mr do
+      let(:milestone) { create(:milestone) }
+
+      it { expect(service.destroy_milestone(milestone, user)).to be_truthy }
+
+      it "should create new event" do
+        expect { service.destroy_milestone(milestone, user) }.to change { Event.count }
+      end
+    end
   end
 end