An admin has always a gestionnaire role

app/models/administration.rb

@@ -19,11 +19,17 @@ class Administration < ApplicationRecord
     if administrateur.save
       AdministrationMailer.new_admin_email(administrateur, self).deliver_later
       administrateur.invite!(id)
+
       User.create({
         email: email,
         password: password,
         confirmed_at: Time.zone.now
       })
+
+      Gestionnaire.create({
+        email: email,
+        password: password
+      })
     end
 
     administrateur

lib/tasks/2018_10_30_admin_has_gestionnaire.rake

@@ -0,0 +1,15 @@
+namespace :'2018_10_30_admin_has_gestionnaire' do
+  task run: :environment do
+    admin_without_gestionnaire_ids = Administrateur
+      .find_by_sql('SELECT administrateurs.id FROM administrateurs LEFT OUTER JOIN gestionnaires ON gestionnaires.email = administrateurs.email WHERE gestionnaires.email IS NULL')
+      .pluck(:id)
+
+    admin_without_gestionnaire_ids.each do |admin_id|
+      admin = Administrateur.find(admin_id)
+      g = Gestionnaire.new
+      g.email = admin.email
+      g.encrypted_password = admin.encrypted_password
+      g.save(validate: false)
+    end
+  end
+end

spec/features/admin/connection_spec.rb

@@ -1,7 +1,10 @@
 require 'spec_helper'
 
 feature 'Administrator connection' do
-  let(:admin) { create(:administrateur) }
+  let(:email) { 'admin1@admin.com' }
+  let(:password) { 'mon chien aime les bananes' }
+  let!(:admin) { create(:administrateur, email: email, password: password) }
+  let!(:gestionnaire) { create(:gestionnaire, email: email, password: password) }
   before do
     visit new_administrateur_session_path
   end

spec/models/administration_spec.rb

@@ -20,6 +20,12 @@ describe Administration, type: :model do
       expect(user).to be_present
     end
 
+    it 'creates a corresponding gestionnaire account for the email' do
+      subject
+      gestionnaire = Gestionnaire.find_by(email: valid_email)
+      expect(gestionnaire).to be_present
+    end
+
     context 'when there already is a user account with the same email' do
       before { create(:user, email: valid_email) }
       it 'still creates an admin account' do