Coverage improvement round-out following up previous work (#23987)

spec/models/admin/appeal_filter_spec.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Admin::AppealFilter do
+  describe '#results' do
+    let(:approved_appeal) { Fabricate(:appeal, approved_at: 10.days.ago) }
+    let(:not_approved_appeal) { Fabricate(:appeal, approved_at: nil) }
+
+    it 'returns filtered appeals' do
+      filter = described_class.new(status: 'approved')
+
+      expect(filter.results).to eq([approved_appeal])
+    end
+  end
+end