app: add controller and view to generate a deposit receipt

spec/views/users/dossiers/papertrail.pdf.prawl_spec.rb

@@ -0,0 +1,25 @@
+describe 'users/dossiers/papertrail.pdf.prawn', type: :view do
+  before do
+    assign(:dossier, dossier)
+  end
+
+  subject { render }
+
+  context 'for a dossier with an individual' do
+    let(:dossier) { create(:dossier, :en_construction, :with_service, :with_individual) }
+
+    it 'renders a PDF document with the dossier state' do
+      subject
+      expect(rendered).to be_present
+    end
+  end
+
+  context 'for a dossier with a SIRET' do
+    let(:dossier) { create(:dossier, :en_construction, :with_service, :with_entreprise) }
+
+    it 'renders a PDF document with the dossier state' do
+      subject
+      expect(rendered).to be_present
+    end
+  end
+end