Improve _project.html.haml_spec.rb test

Add test for logged out user to confirm unauthorized
users can not see the Iterations link

ee/spec/views/layouts/nav/sidebar/_project.html.haml_spec.rb

@@ -247,6 +247,7 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
   end
 
   describe 'iterations link' do
+    context 'with authorized user' do
       let_it_be(:current_user) { create(:user) }
 
       before do
@@ -297,4 +298,49 @@ RSpec.describe 'layouts/nav/sidebar/_project' do
         end
       end
     end
+
+    context 'with unauthorized user' do
+      context 'with iterations licensed feature available' do
+        before do
+          stub_licensed_features(iterations: true)
+        end
+
+        context 'with project_iterations feature flag enabled' do
+          before do
+            stub_feature_flags(project_iterations: true)
+          end
+
+          it 'is not visible' do
+            render
+
+            expect(rendered).not_to have_text 'Iterations'
+          end
+        end
+
+        context 'with project_iterations feature flag disabled' do
+          before do
+            stub_feature_flags(project_iterations: false)
+          end
+
+          it 'is not visible' do
+            render
+
+            expect(rendered).not_to have_text 'Iterations'
+          end
+        end
+      end
+
+      context 'with iterations licensed feature disabled' do
+        before do
+          stub_licensed_features(iterations: false)
+        end
+
+        it 'is not visible' do
+          render
+
+          expect(rendered).not_to have_text 'Iterations'
+        end
+      end
+    end
+  end
 end