correctif(data): ajoute une classe pour ajouter les champs manquant a des dossiers qui ont subit une perte de donnée supposant qu'une race-condition sur le dossier.merge(fork) puisse detruire des champs

spec/lib/data_fixer/dossier_champs_missing_spec.rb

@@ -0,0 +1,36 @@
+describe DataFixer::DossierChampsMissing do
+  describe '#fix' do
+    let(:procedure) { create(:procedure, :with_datetime, :with_dossier_link) }
+    let(:dossier) { create(:dossier, procedure:) }
+
+    context 'when dossier does not have a fork' do
+      before { dossier.champs_public.first.destroy }
+      subject { described_class.new(dossier:).fix }
+
+      it 'add missing champs to the dossier' do
+        expect { subject }.to change { dossier.champs_public.count }.from(1).to(2)
+      end
+
+      it 'returns number of added champs' do
+        expect(subject).to eq(1)
+      end
+    end
+
+    context 'when dossier have a fork' do
+      before { dossier.champs_public.first.destroy }
+      let(:create_fork) { dossier.find_or_create_editing_fork(dossier.user) }
+      subject do
+        create_fork
+        described_class.new(dossier:).fix
+      end
+
+      it 'add missing champs to the fork too' do
+        expect { subject }.to change { create_fork.champs_public.count }.from(1).to(2)
+      end
+
+      it 'sums number of added champs for dossier and editing_fork_origin_id' do
+        expect(subject).to eq(2)
+      end
+    end
+  end
+end