associate_user take a target email

app/controllers/france_connect/particulier_controller.rb

@@ -13,7 +13,7 @@ class FranceConnect::ParticulierController < ApplicationController
     fci = FranceConnectService.find_or_retrieve_france_connect_information(params[:code])
 
     if fci.user.nil?
-      fci.associate_user!
+      fci.associate_user!(fci.email_france_connect)
     end
 
     user = fci.user

app/models/france_connect_information.rb

@@ -24,10 +24,10 @@ class FranceConnectInformation < ApplicationRecord
 
   validates :france_connect_particulier_id, presence: true, allow_blank: false, allow_nil: false
 
-  def associate_user!
+  def associate_user!(email)
     begin
       user = User.create!(
-        email: email_france_connect.downcase,
+        email: email.downcase,
         password: Devise.friendly_token[0, 20],
         confirmed_at: Time.zone.now
       )

spec/models/france_connect_information_spec.rb

@@ -9,13 +9,16 @@ describe FranceConnectInformation, type: :model do
 
   describe 'associate_user!' do
     context 'when there is no user with same email' do
+      let(:email) { 'A@email.com' }
       let(:fci) { build(:france_connect_information) }
-      let(:subject) { fci.associate_user! }
+
+      subject { fci.associate_user!(email) }
 
       it { expect { subject }.to change(User, :count).by(1) }
+
       it do
         subject
-        expect(fci.user.email).to eq(fci.email_france_connect)
+        expect(fci.user.email).to eq('a@email.com')
       end
     end
   end