[#2180] Expose migrated types PJ as legacy types PJ in procedure API

spec/serializers/procedure_serializer_spec.rb

@@ -8,4 +8,38 @@ describe ProcedureSerializer do
       is_expected.to include(state: "publiee")
     }
   end
+
+  context 'when a type PJ was cloned to a type champ PJ' do
+    let(:original_procedure) do
+      p = create(:procedure, :published)
+      p.types_de_piece_justificative.create(
+        libelle: "Vidéo de votre demande de subvention",
+        description: "Pour optimiser vos chances, soignez la chorégraphie et privilégiez le chant polyphonique",
+        lien_demarche: "https://www.dance-academy.gouv.fr",
+        order_place: 0
+      )
+      p
+    end
+
+    let(:procedure) { original_procedure.clone(original_procedure.administrateur, false) }
+
+    let(:type_pj) { original_procedure.types_de_piece_justificative.first }
+    let(:migrated_type_champ) { procedure.types_de_champ.find_by(libelle: type_pj.libelle) }
+
+    subject { ProcedureSerializer.new(procedure).serializable_hash }
+
+    it "is exposed as a legacy type PJ" do
+      is_expected.to include(
+        types_de_piece_justificative: [
+          {
+            "id" => type_pj.id,
+            "libelle" => type_pj.libelle,
+            "description" => type_pj.description,
+            "lien_demarche" => type_pj.lien_demarche,
+            "order_place" => type_pj.order_place
+          }
+        ]
+      )
+    end
+  end
 end