Add tests to LabelsFinder

spec/finders/labels_finder_spec.rb

+require 'spec_helper'
+
+describe LabelsFinder do
+  describe '#execute' do
+    let(:group_1) { create(:group) }
+    let(:group_2) { create(:group) }
+    let(:group_3) { create(:group) }
+
+    let(:project_1) { create(:empty_project, namespace: group_1) }
+    let(:project_2) { create(:empty_project, namespace: group_2) }
+    let(:project_3) { create(:empty_project) }
+    let(:project_4) { create(:empty_project, :public) }
+    let(:project_5) { create(:empty_project, namespace: group_1) }
+
+    let!(:project_label_1) { create(:label, project: project_1, title: 'Label 1') }
+    let!(:project_label_2) { create(:label, project: project_2, title: 'Label 2') }
+    let!(:project_label_4) { create(:label, project: project_4, title: 'Label 4') }
+    let!(:project_label_5) { create(:label, project: project_5, title: 'Label 5') }
+
+    let!(:group_label_1) { create(:group_label, group: group_1, title: 'Label 1') }
+    let!(:group_label_2) { create(:group_label, group: group_1, title: 'Group Label 2') }
+    let!(:group_label_3) { create(:group_label, group: group_2, title: 'Group Label 3') }
+
+    let(:user) { create(:user) }
+
+    before do
+      create(:label, project: project_3, title: 'Label 3')
+      create(:group_label, group: group_3, title: 'Group Label 4')
+
+      project_1.team << [user, :developer]
+    end
+
+    context 'with no filter' do
+      it 'returns labels from projects the user have access' do
+        group_2.add_developer(user)
+
+        finder = described_class.new(user)
+
+        expect(finder.execute).to eq [group_label_2, group_label_3, project_label_1, group_label_1, project_label_2, project_label_4]
+      end
+    end
+
+    context 'filtering by group_id' do
+      it 'returns labels available for any project within the group' do
+        group_1.add_developer(user)
+
+        finder = described_class.new(user, group_id: group_1.id)
+
+        expect(finder.execute).to eq [group_label_2, project_label_1, group_label_1, project_label_5]
+      end
+    end
+
+    context 'filtering by project_id' do
+      it 'returns labels available for the project' do
+        finder = described_class.new(user, project_id: project_1.id)
+
+        expect(finder.execute).to eq [group_label_2, project_label_1, group_label_1]
+      end
+    end
+
+    context 'filtering by title' do
+      it 'returns label with that title' do
+        finder = described_class.new(user, title: 'Group Label 2')
+
+        expect(finder.execute).to eq [group_label_2]
+      end
+    end
+  end
+end