Fix bug revisualization controller

spec/services/previsualisation_service_spec.rb

@@ -0,0 +1,31 @@
+require 'spec_helper'
+
+describe PrevisualisationService do
+
+  describe '.destroy_all_champs' do
+    subject { described_class.destroy_all_champs dossier }
+
+    let(:procedure_1) { create :procedure, :with_type_de_champ }
+    let(:procedure_2) { create :procedure, :with_type_de_champ }
+
+    let!(:dossier_1) { create :dossier, procedure: procedure_1 }
+    let!(:dossier_2) { create :dossier, procedure: procedure_2 }
+
+    it { expect(Dossier.all.size).to eq 2 }
+    it { expect(TypeDeChamp.all.size).to eq 2 }
+    it { expect(Champ.all.size).to eq 2 }
+
+    context 'when function destroy_all_champs is call' do
+      let(:dossier) { dossier_1 }
+
+      before do
+        subject
+      end
+
+      it { expect(Dossier.all.size).to eq 2 }
+      it { expect(TypeDeChamp.all.size).to eq 2 }
+      it { expect(Champ.all.size).to eq 1 }
+      it { expect(Champ.first.type_de_champ).to eq procedure_2.types_de_champ.first }
+    end
+  end
+end