Add retention policy for cached content and media (#19232)

spec/lib/vacuum/access_tokens_vacuum_spec.rb

@@ -0,0 +1,33 @@
+require 'rails_helper'
+
+RSpec.describe Vacuum::AccessTokensVacuum do
+  subject { described_class.new }
+
+  describe '#perform' do
+    let!(:revoked_access_token) { Fabricate(:access_token, revoked_at: 1.minute.ago) }
+    let!(:active_access_token) { Fabricate(:access_token) }
+
+    let!(:revoked_access_grant) { Fabricate(:access_grant, revoked_at: 1.minute.ago) }
+    let!(:active_access_grant) { Fabricate(:access_grant) }
+
+    before do
+      subject.perform
+    end
+
+    it 'deletes revoked access tokens' do
+      expect { revoked_access_token.reload }.to raise_error ActiveRecord::RecordNotFound
+    end
+
+    it 'deletes revoked access grants' do
+      expect { revoked_access_grant.reload }.to raise_error ActiveRecord::RecordNotFound
+    end
+
+    it 'does not delete active access tokens' do
+      expect { active_access_token.reload }.to_not raise_error
+    end
+
+    it 'does not delete active access grants' do
+      expect { active_access_grant.reload }.to_not raise_error
+    end
+  end
+end