smaller font-size for large footers in attestation

app/views/new_administrateur/attestation_templates/show.pdf.prawn

@@ -74,6 +74,11 @@ prawn_document(margin: [top_margin, right_margin, bottom_margin, left_margin], p
   pdf.repeat(:all) do
     pdf.move_cursor_to footer_height - 10
     pdf.fill_color grey
-    pdf.text footer, align: :center, size: 8
+    if footer.present?
+      # We reduce the size of large footer so they can be drawn in the corresponding area.
+      # This is due to a font change, the replacing font is slightly bigger than the previous one
+      footer_font_size = footer.length > 170 ? 7 : 8
+      pdf.text footer, align: :center, size: footer_font_size
+    end
   end
 end

spec/controllers/new_administrateur/attestation_templates_controller_spec.rb

@@ -66,6 +66,22 @@ describe NewAdministrateur::AttestationTemplatesController, type: :controller do
         it { expect(assigns(:attestation)[:signature]).to eq(nil) }
         it_behaves_like 'rendering a PDF successfully'
       end
+
+      context 'with empty footer' do
+        let!(:attestation_template) do
+          create(:attestation_template, { title: 't', body: 'b', footer: nil })
+        end
+
+        it_behaves_like 'rendering a PDF successfully'
+      end
+
+      context 'with large footer' do
+        let!(:attestation_params) do
+          create(:attestation_template, { title: 't', body: 'b', footer: ' ' * 190 })
+        end
+
+        it_behaves_like 'rendering a PDF successfully'
+      end
     end
   end