app: retain user email on sign-in error

app/views/users/sessions/new.html.haml

@@ -2,7 +2,7 @@
 
 .auth-form.sign-in-form
 
-  = form_for User.new, url: user_session_path, html: { class: "form" } do |f|
+  = form_for resource, url: user_session_path, html: { class: "form" } do |f|
     %h1.huge-title= t('views.sessions.new.title')
 
     = render partial: 'shared/france_connect_login', locals: { url: france_connect_particulier_path }

spec/features/sessions/sign_in_spec.rb

@@ -6,8 +6,11 @@ feature 'Signin in:' do
     visit root_path
     click_on 'Connexion'
 
-    sign_in_with user.email, password
+    sign_in_with user.email, 'invalid-password'
+    expect(page).to have_content 'Courriel ou mot de passe incorrect.'
+    expect(page).to have_field('Email', with: user.email)
 
+    sign_in_with user.email, password
     expect(page).to have_current_path dossiers_path
   end
 

spec/views/users/sessions/new.html.haml_spec.rb

@@ -3,7 +3,7 @@ describe 'users/sessions/new.html.haml', type: :view do
 
   before(:each) do
     allow(view).to receive(:devise_mapping).and_return(Devise.mappings[:user])
-    allow(view).to receive(:resource_name).and_return(:user)
+    allow(view).to receive(:resource).and_return(:user)
   end
 
   before do