fix(champs.orphaned): add maintenance task to clean orphaned champs where dossier is missing

spec/tasks/maintenance/delete_orphaned_champs_with_missing_dossier_task_spec.rb

@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+module Maintenance
+  RSpec.describe DeleteOrphanedChampsWithMissingDossierTask do
+    describe "#process" do
+      let(:procedure) { create(:procedure, types_de_champ_public:) }
+      let(:dossier) { create(:dossier, :with_populated_champs, procedure:) }
+      let(:champ) { dossier.champs.first }
+
+      subject(:process) { described_class.process(champ) }
+
+      context 'with other champs' do
+        let(:types_de_champ_public) { [{ type: :text }] }
+        it 'delete champ' do
+          expect { subject }.to change { Champ.exists?(champ.id) }.from(true).to(false)
+        end
+      end
+
+      context "with carte" do
+        let(:types_de_champ_public) { [{ type: :carte }] }
+        it 'deletes champ.geo_areas' do
+          geo_area_ids = champ.geo_areas.ids
+          expect { subject }.to change { GeoArea.where(id: geo_area_ids).count }.from(2).to(0)
+          expect(Champ.exists?(champ.id)).to be_falsey
+        end
+      end
+
+      context "with repetition" do
+        let(:types_de_champ_public) { [{ type: :repetition, mandatory: true, children: [{ type: :text }] }] }
+        it 'deletes champ.champs (children)' do
+          expect { subject }.to change { champ.champs.count }.from(2).to(0)
+          expect(Champ.exists?(champ.id)).to be_falsey
+        end
+      end
+
+      context "with siret" do
+        let(:types_de_champ_public) { [{ type: :siret }] }
+        it 'delete champ.etablissement' do
+          expect { subject }.to change { Etablissement.exists?(champ.etablissement_id) }.from(true).to(false)
+          expect(Champ.exists?(champ.id)).to be_falsey
+        end
+      end
+    end
+  end
+end