Merge branch 'issue_18135' into 'master'

Todos sorting dropdown

Implements #18135 

![todos_sorting](/uploads/bff76827c421628134dfb8b864e47c74/todos_sorting.png)  


- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5691

1 files changed, 70 insertions, 0 deletions

diff --git a/spec/finders/todos_finder_spec.rb b/spec/finders/todos_finder_spec.rb
new file mode 100644
index 00000000000..f7e7e733cf7
--- /dev/null
+++ b/spec/finders/todos_finder_spec.rb
@@ -0,0 +1,70 @@
+require 'spec_helper'
+
+describe TodosFinder do
+  describe '#execute' do
+    let(:user)          { create(:user) }
+    let(:project)       { create(:empty_project) }
+    let(:finder)        { described_class }
+
+    before { project.team << [user, :developer] }
+
+    describe '#sort' do
+      context 'by date' do
+        let!(:todo1) { create(:todo, user: user, project: project) }
+        let!(:todo2) { create(:todo, user: user, project: project) }
+        let!(:todo3) { create(:todo, user: user, project: project) }
+
+        it 'sorts with oldest created first' do
+          todos = finder.new(user, { sort: 'id_asc' }).execute
+
+          expect(todos.first).to eq(todo1)
+          expect(todos.second).to eq(todo2)
+          expect(todos.third).to eq(todo3)
+        end
+
+        it 'sorts with newest created first' do
+          todos = finder.new(user, { sort: 'id_desc' }).execute
+
+          expect(todos.first).to eq(todo3)
+          expect(todos.second).to eq(todo2)
+          expect(todos.third).to eq(todo1)
+        end
+      end
+
+      it "sorts by priority" do
+        label_1         = create(:label, title: 'label_1', project: project, priority: 1)
+        label_2         = create(:label, title: 'label_2', project: project, priority: 2)
+        label_3         = create(:label, title: 'label_3', project: project, priority: 3)
+
+        issue_1         = create(:issue, title: 'issue_1', project: project)
+        issue_2         = create(:issue, title: 'issue_2', project: project)
+        issue_3         = create(:issue, title: 'issue_3', project: project)
+        issue_4         = create(:issue, title: 'issue_4', project: project)
+        merge_request_1 = create(:merge_request, source_project: project)
+
+        merge_request_1.labels << label_1
+
+        # Covers the case where Todo has more than one label
+        issue_3.labels         << label_1
+        issue_3.labels         << label_3
+
+        issue_2.labels         << label_3
+        issue_1.labels         << label_2
+
+        todo_1 = create(:todo, user: user, project: project, target: issue_4)
+        todo_2 = create(:todo, user: user, project: project, target: issue_2)
+        todo_3 = create(:todo, user: user, project: project, target: issue_3, created_at: 2.hours.ago)
+        todo_4 = create(:todo, user: user, project: project, target: issue_1)
+        todo_5 = create(:todo, user: user, project: project, target: merge_request_1, created_at: 1.hour.ago)
+
+        todos = finder.new(user, { sort: 'priority' }).execute
+
+        expect(todos.first).to eq(todo_3)
+        expect(todos.second).to eq(todo_5)
+        expect(todos.third).to eq(todo_4)
+        expect(todos.fourth).to eq(todo_2)
+        expect(todos.fifth).to eq(todo_1)
+      end
+    end
+  end
+end