Consolidate system specs into single directory, use rspec tags for configuration (#30206)

spec/system/admin/custom_emojis_spec.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe 'Admin::CustomEmojis' do
+  let(:current_user) { Fabricate(:user, role: UserRole.find_by(name: 'Admin')) }
+
+  before do
+    sign_in current_user
+  end
+
+  describe 'Performing batch updates' do
+    before do
+      visit admin_custom_emojis_path
+    end
+
+    context 'without selecting any records' do
+      it 'displays a notice about selection' do
+        click_on button_for_enable
+
+        expect(page).to have_content(selection_error_text)
+      end
+    end
+
+    def button_for_enable
+      I18n.t('admin.custom_emojis.enable')
+    end
+
+    def selection_error_text
+      I18n.t('admin.custom_emojis.no_emoji_selected')
+    end
+  end
+end