Abstract out method from spec to support

spec/features/boards/sidebar_spec.rb

@@ -129,6 +129,7 @@ describe 'Issue Boards', :js do
           click_link 'Unassigned'
         end
 
+        close_dropdown_menu_if_visible
         wait_for_requests
 
         expect(page).to have_content('No assignee')

spec/support/helpers/filtered_search_helpers.rb

@@ -149,4 +149,10 @@ module FilteredSearchHelpers
       loop until find('.filtered-search').value.strip == text
     end
   end
+
+  def close_dropdown_menu_if_visible
+    find('.dropdown-menu-toggle', visible: :all).tap do |toggle|
+      toggle.click if toggle.visible?
+    end
+  end
 end