Hide how-to-upgrade link if ultimate plan

- no need to show how-to-upgrade link if
  we are already on the highest possible.

ee/app/models/license.rb

@@ -439,10 +439,12 @@ class License < ApplicationRecord
     restricted_attr(:trial)
   end
 
-  def exclude_guests_from_active_count?
+  def ultimate?
     plan == License::ULTIMATE_PLAN
   end
 
+  alias_method :exclude_guests_from_active_count?, :ultimate?
+
   def remaining_days
     return 0 if expired?
 

ee/app/views/admin/licenses/_info.html.haml

@@ -16,6 +16,7 @@
         %li
           %span.light= _('Plan:')
           %strong= @license.plan.capitalize
+          - unless @license.ultimate?
             = ' - '
             = link_to _('How to upgrade'),
               help_page_path('subscriptions/index.md', anchor: 'upgrade-your-self-managed-subscription-tier'),

ee/changelogs/unreleased/238191-hide-the-upgrade-link-on-the-admin-license-page-if-the-current-.yml

+---
+title: Hide the upgrade link on the admin license page if plan Ultimate
+merge_request: 40977
+author:
+type: changed

ee/spec/models/license_spec.rb

@@ -767,6 +767,26 @@ RSpec.describe License do
     end
   end
 
+  describe '#ultimate?' do
+    using RSpec::Parameterized::TableSyntax
+
+    let(:license) { build(:license, plan: plan) }
+
+    subject { license.ultimate? }
+
+    where(:plan, :expected) do
+      nil | false
+      described_class::STARTER_PLAN | false
+      described_class::PREMIUM_PLAN | false
+      described_class::EARLY_ADOPTER_PLAN | false
+      described_class::ULTIMATE_PLAN | true
+    end
+
+    with_them do
+      it { is_expected.to eq(expected) }
+    end
+  end
+
   describe 'Trial Licenses' do
     before do
       ApplicationSetting.create_from_defaults

ee/spec/views/admin/licenses/_info.html.haml_spec.rb

@@ -3,13 +3,14 @@
 require 'spec_helper'
 
 RSpec.describe 'admin/licenses/_info' do
-  let_it_be(:license) { create(:license) }
-
+  context 'when observing the license' do
     before do
       assign(:license, license)
     end
 
-  context 'when observing licensees' do
+    context 'when plan can be upgraded' do
+      let(:license) { create(:license, plan: License::STARTER_PLAN) }
+
       it 'shows "How to upgrade" link' do
         render
 
@@ -17,4 +18,16 @@ RSpec.describe 'admin/licenses/_info' do
         expect(rendered).to have_link('How to upgrade')
       end
     end
+
+    context 'when plan can not be upgraded' do
+      let(:license) { create(:license, plan: License::ULTIMATE_PLAN) }
+
+      it 'does not show "How to upgrade" link' do
+        render
+
+        expect(rendered).to have_content('Plan: Ultimate')
+        expect(rendered).not_to have_link('How to upgrade')
+      end
+    end
+  end
 end