Allow more flexible host/port treatment with LOCAL_DOMAIN values in tests (#35040)

spec/models/remote_follow_spec.rb

@@ -61,7 +61,16 @@ RSpec.describe RemoteFollow do
     let(:account) { Fabricate(:account, username: 'alice') }
 
     it 'returns subscribe address' do
-      expect(subject).to eq "https://quitter.no/main/ostatussub?profile=https%3A%2F%2F#{Rails.configuration.x.local_domain}%2Fusers%2Falice"
+      expect(subject).to eq(expected_subscribe_url)
+    end
+
+    def expected_subscribe_url
+      Addressable::URI.new(
+        host: 'quitter.no',
+        path: '/main/ostatussub',
+        query_values: { profile: "https://#{Rails.configuration.x.local_domain}/users/alice" },
+        scheme: 'https'
+      ).to_s
     end
   end
 end