Refactor presenter specs

spec/presenters/project_presenter_spec.rb

@@ -429,22 +429,27 @@ describe ProjectPresenter do
         a_string_including('CONTRIBUTING')
       )
     end
+  end
 
-    context 'empty repo' do
-      let(:project) { create(:project, :repository) }
+  describe '#empty_repo_statistics_buttons' do
+    let(:project) { create(:project, :repository) }
+    let(:presenter) { described_class.new(project, current_user: user) }
 
-      it 'orders the items correctly in an empty project' do
-        project.add_developer(user)
-        allow(project).to receive(:auto_devops_enabled?).and_return(false)
-        buttons = presenter.empty_repo_statistics_buttons
-        expect(buttons.map(&:label)).to start_with(
-          a_string_including('New'),
-          a_string_including('README'),
-          a_string_including('CHANGELOG'),
-          a_string_including('CONTRIBUTING'),
-          a_string_including('CI/CD')
-        )
-      end
+    subject(:empty_repo_statistics_buttons) { presenter.empty_repo_statistics_buttons }
+
+    before do
+      project.add_developer(user)
+      allow(project).to receive(:auto_devops_enabled?).and_return(false)
+    end
+
+    it 'orders the items correctly in an empty project' do
+      expect(empty_repo_statistics_buttons.map(&:label)).to start_with(
+        a_string_including('New'),
+        a_string_including('README'),
+        a_string_including('CHANGELOG'),
+        a_string_including('CONTRIBUTING'),
+        a_string_including('CI/CD')
+      )
     end
   end
-end
\ No newline at end of file
+end