Show if a user is using a license seat

Adds a field to the admin user view that shows whether that user is
using a license seat.

app/views/admin/users/show.html.haml

@@ -124,6 +124,8 @@
           %strong
             = Gitlab::Access.human_access_with_none(@user.highest_role)
 
+        = render_if_exists 'admin/users/using_license_seat', user: @user
+
         - if @user.ldap_user?
           %li
             %span.light LDAP uid:

ee/app/models/ee/user.rb

@@ -217,6 +217,16 @@ module EE
       License.current.present?
     end
 
+    def using_license_seat?
+      return false unless active?
+
+      if License.current&.exclude_guests_from_active_count?
+        highest_role > ::Gitlab::Access::GUEST
+      else
+        highest_role > ::Gitlab::Access::NO_ACCESS
+      end
+    end
+
     def group_sso?(group)
       return false unless group
 

ee/app/views/admin/users/_using_license_seat.html.haml

+%li
+  %span.light= _("Is using license seat:")
+  %strong
+    = @user.using_license_seat? ? _("Yes") : _("No")

ee/changelogs/unreleased/tpresa-using-license-seat.yml

+---
+title: Show if user is using a license seat on admin user page
+merge_request: 11449
+author:
+type: added

ee/spec/models/user_spec.rb

@@ -565,4 +565,36 @@ describe User do
       end
     end
   end
+
+  describe '#using_license_seat?' do
+    let(:user) { create(:user) }
+
+    context 'when user is inactive' do
+      before do
+        user.block
+      end
+
+      it 'returns false' do
+        expect(user.using_license_seat?).to eq false
+      end
+    end
+
+    context 'when user is active' do
+      let(:project_guest_user) { create(:project_member, :guest).user }
+
+      context 'user is guest' do
+        it 'returns false if license is ultimate' do
+          create(:license, plan: License::ULTIMATE_PLAN)
+
+          expect(project_guest_user.using_license_seat?).to eq false
+        end
+
+        it 'returns true if license is not ultimate' do
+          create(:license, plan: License::STARTER_PLAN)
+
+          expect(project_guest_user.using_license_seat?).to eq true
+        end
+      end
+    end
+  end
 end

locale/gitlab.pot

@@ -7000,6 +7000,9 @@ msgstr ""
 msgid "Invoke Time"
 msgstr ""
 
+msgid "Is using license seat:"
+msgstr ""
+
 msgid "IssuableStatus|Closed (%{moved_link_start}moved%{moved_link_end})"
 msgstr ""