Introduce Pipeline#merge_requests_with_active_first,

Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6019#note_16956802

2 files changed, 40 insertions, 1 deletions

diff --git a/spec/models/ci/pipeline_spec.rb b/spec/models/ci/pipeline_spec.rb
index 550a890797e..2a0b00dc545 100644
--- a/spec/models/ci/pipeline_spec.rb
+++ b/spec/models/ci/pipeline_spec.rb
@@ -523,4 +523,35 @@ describe Ci::Pipeline, models: true do
       expect(pipeline.merge_requests).to be_empty
     end
   end
+
+  describe '#merge_requests_with_active_first' do
+    let(:project) { create(:project) }
+
+    let(:pipeline) do
+      create(:ci_empty_pipeline,
+             status: 'created',
+             project: project,
+             ref: 'master',
+             sha: project.repository.commit('master').sha)
+    end
+
+    let!(:merge_requests) do
+      [create_merge_request(:merged, Time.at(0)),
+       create_merge_request(:merged, Time.at(9)),
+       create_merge_request(:opened, Time.at(0))]
+    end
+
+    it 'returns opened/recent merge requests first, then closed ones' do
+      expect(pipeline.merge_requests_with_active_first).
+        to eq(merge_requests.reverse)
+    end
+
+    def create_merge_request(state, updated_at)
+      create(:merge_request,
+             source_project: project,
+             source_branch: pipeline.ref,
+             state: state,
+             updated_at: updated_at)
+    end
+  end
 end
diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb
index 38b6da50168..8cf53fd1dee 100644
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -58,6 +58,14 @@ describe MergeRequest, models: true do
     it { is_expected.to respond_to(:merge_when_build_succeeds) }
   end
 
+  describe '#state_priority' do
+    it 'returns the priority of state' do
+      %w[opened reopened closed merged locked].each.with_index do |state, idx|
+        expect(MergeRequest.new(state: state).state_priority).to eq(idx)
+      end
+    end
+  end
+
   describe '.in_projects' do
     it 'returns the merge requests for a set of projects' do
       expect(described_class.in_projects(Project.all)).to eq([subject])
@@ -334,7 +342,7 @@ describe MergeRequest, models: true do
       wip_title = "WIP: #{subject.title}"
 
       expect(subject.wip_title).to eq wip_title
-    end 
+    end
 
     it "does not add the WIP: prefix multiple times" do
       wip_title = "WIP: #{subject.title}"