Add password challenge to 2FA settings, e-mail notifications (#11878)

Fix #3961

spec/controllers/auth/challenges_controller_spec.rb

@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe Auth::ChallengesController, type: :controller do
+  render_views
+
+  let(:password) { 'foobar12345' }
+  let(:user) { Fabricate(:user, password: password) }
+
+  before do
+    sign_in user
+  end
+
+  describe 'POST #create' do
+    let(:return_to) { edit_user_registration_path }
+
+    context 'with correct password' do
+      before { post :create, params: { form_challenge: { return_to: return_to, current_password: password } } }
+
+      it 'redirects back' do
+        expect(response).to redirect_to(return_to)
+      end
+
+      it 'sets session' do
+        expect(session[:challenge_passed_at]).to_not be_nil
+      end
+    end
+
+    context 'with incorrect password' do
+      before { post :create, params: { form_challenge: { return_to: return_to, current_password: 'hhfggjjd562' } } }
+
+      it 'renders challenge' do
+        expect(response).to render_template('auth/challenges/new')
+      end
+
+      it 'displays error' do
+        expect(response.body).to include 'Invalid password'
+      end
+
+      it 'does not set session' do
+        expect(session[:challenge_passed_at]).to be_nil
+      end
+    end
+  end
+end