Hide subs expiration banner before eligible

Update the expiration banner to be visible
15 days before expiration

Changelog: changed
EE: true

ee/app/presenters/subscription_presenter.rb

@@ -2,6 +2,7 @@
 
 class SubscriptionPresenter < Gitlab::View::Presenter::Delegated
   GRACE_PERIOD_EXTENSION_DAYS = 14.days
+  RENEWAL_ALLOWED_PERIOD_DAYS = 15
 
   presents ::Subscription, as: :subscription
 
@@ -14,7 +15,7 @@ def plan
   end
 
   def notify_admins?
-    remaining_days && remaining_days < 30
+    remaining_days.present? && remaining_days <= RENEWAL_ALLOWED_PERIOD_DAYS
   end
 
   def notify_users?

ee/spec/features/subscriptions/expiring_subscription_message_spec.rb

@@ -115,11 +115,11 @@
         end
       end
 
-      context 'with a license expiring in less than 30 days' do
-        let(:end_date) { Date.current + 29.days }
+      context 'with a license expiring in less than 15 days' do
+        let(:end_date) { Date.current + 14.days }
 
         it 'notifies the group owner of a soon expiring subscription' do
-          expect(page).to have_content('Your subscription will expire in 29 days')
+          expect(page).to have_content('Your subscription will expire in 14 days')
         end
       end
 

ee/spec/presenters/subscription_presenter_spec.rb

@@ -3,6 +3,8 @@
 require 'spec_helper'
 
 RSpec.describe SubscriptionPresenter, :saas do
+  using RSpec::Parameterized::TableSyntax
+
   let(:subscription) { create(:gitlab_subscription) }
   let(:presenter) { described_class.new(subscription) }
 
@@ -15,26 +17,20 @@
   describe '#notify_admins?' do
     subject { presenter.notify_admins? }
 
-    let(:today) { Time.utc(2020, 3, 7, 10) }
-
-    it 'is false when remaining days is nil' do
-      expect(subject).to be false
+    where(:remaining_days_count, :expected_result) do
+      nil  | false
+      0    | true
+      described_class::RENEWAL_ALLOWED_PERIOD_DAYS - 1.day   | true
+      described_class::RENEWAL_ALLOWED_PERIOD_DAYS           | true
+      described_class::RENEWAL_ALLOWED_PERIOD_DAYS + 1.day   | false
     end
 
-    it 'remaining days more than 30 is false' do
-      allow(subscription).to receive(:end_date).and_return(Time.utc(2020, 4, 9, 10).to_date)
-
-      travel_to(today) do
-        expect(subject).to be false
+    with_them do
+      before do
+        allow(presenter).to receive(:remaining_days).and_return(remaining_days_count)
       end
-    end
-
-    it 'remaining days less than 30 is true' do
-      allow(subscription).to receive(:end_date).and_return(Time.utc(2020, 3, 9, 10).to_date)
 
-      travel_to(today) do
-        expect(subject).to be true
-      end
+      it { expect(subject).to be(expected_result) }
     end
   end