Create insert_before_sub_nav_item helper

ee/spec/features/groups/navbar_spec.rb

@@ -35,7 +35,7 @@ describe 'Group navbar' do
     before do
       stub_licensed_features(cycle_analytics_for_groups: true)
 
-      insert_after_sub_nav_item(
+      insert_before_sub_nav_item(
         _('Contribution'),
         within: _('Analytics'),
         new_sub_nav_item_name: _('Value Stream')

spec/support/helpers/navbar_structure_helper.rb

@@ -18,4 +18,15 @@ module NavbarStructureHelper
     index = hash[:nav_sub_items].find_index(before_sub_nav_item_name)
     hash[:nav_sub_items].insert(index + 1, new_sub_nav_item_name)
   end
+
+  def insert_before_sub_nav_item(after_sub_nav_item_name, within:, new_sub_nav_item_name:)
+    expect(structure).to include(a_hash_including(nav_item: within))
+    hash = structure.find { |h| h[:nav_item] == within }
+
+    expect(hash).to have_key(:nav_sub_items)
+    expect(hash[:nav_sub_items]).to include(after_sub_nav_item_name)
+
+    index = hash[:nav_sub_items].find_index(after_sub_nav_item_name)
+    hash[:nav_sub_items].insert(index, new_sub_nav_item_name)
+  end
 end