making feature test and removing view test

app/views/shared/_header_navbar.html.erb

@@ -2,4 +2,5 @@
   <%= render blacklight_config.header_component.new(blacklight_config: blacklight_config) %>
 <% else %>
   <%= render Spotlight::HeaderComponent.new(blacklight_config: blacklight_config) %>
+  <% ActiveSupport::Deprecation.warn("_header_navbar.html.erb will be deprecated in future versions. Please use Blacklight configuration to specify your HeaderComponent.") %> 
 <% end %>

spec/features/header_links_spec.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+RSpec.describe 'header links', type: :feature do
+  context 'when not signed in' do
+    it 'shows sign in' do
+      visit main_app.root_path
+
+      expect(page).to have_link('Sign in', href: '/users/sign_in')
+    end
+  end
+
+  context 'when signed in' do
+    let(:user) { FactoryBot.create(:site_admin) }
+
+    it 'shows user util links for admin user' do
+      login_as user
+
+      visit main_app.root_path
+
+      expect(page).to have_selector '#user-util-collapse', text: 'Site administration'
+      expect(page).to have_selector '#user-util-collapse', text: 'Create new exhibit'
+      expect(page).to have_selector '#user-util-collapse', text: 'Change Password'
+      expect(page).to have_selector '#user-util-collapse', text: 'Sign out'
+    end
+  end
+end