Administrateur can be param the acknowledgement of delivery mail object and body.

spec/controllers/admin/mails_controller_spec.rb

@@ -0,0 +1,42 @@
+require 'spec_helper'
+
+describe Admin::MailsController, type: :controller do
+  let(:procedure) { create :procedure }
+
+  before do
+    sign_in procedure.administrateur
+  end
+
+  describe 'GET index' do
+    subject { get :index, procedure_id: procedure.id }
+
+    it { expect(subject.status).to eq 200 }
+  end
+
+  describe 'PATCH update' do
+    let(:object) { 'plop modif' }
+    let(:body) { 'plip modif' }
+
+    context 'when is mail_received id' do
+      subject { patch :update,
+                      procedure_id: procedure.id,
+                      id: procedure.mail_received.id,
+                      mail_received: {
+                          object: object,
+                          body: body
+                      } }
+
+      it { expect(subject).to redirect_to admin_procedure_mails_path }
+
+      describe 'values in database for mail received' do
+        before do
+          subject
+          procedure.reload
+        end
+
+        it { expect(procedure.mail_received.object).to eq object }
+        it { expect(procedure.mail_received.body).to eq body }
+      end
+    end
+  end
+end