Separate notifications preferences from general preferences (#4447)

* Separate notifications preferences from general preferences

* Refine settings/notifications/show

* remove preferences.notifications

spec/controllers/settings/notifications_controller_spec.rb

@@ -0,0 +1,37 @@
+require 'rails_helper'
+
+describe Settings::NotificationsController do
+  render_views
+
+  let(:user) { Fabricate(:user) }
+
+  before do
+    sign_in user, scope: :user
+  end
+
+  describe 'GET #show' do
+    it 'returns http success' do
+      get :show
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'PUT #update' do
+    it 'updates notifications settings' do
+      user.settings['notification_emails'] = user.settings['notification_emails'].merge('follow' => false)
+      user.settings['interactions'] = user.settings['interactions'].merge('must_be_follower' => true)
+
+      put :update, params: {
+        user: {
+          notification_emails: { follow: '1' },
+          interactions: { must_be_follower: '0' },
+        }
+      }
+
+      expect(response).to redirect_to(settings_notifications_path)
+      user.reload
+      expect(user.settings['notification_emails']['follow']).to be true
+      expect(user.settings['interactions']['must_be_follower']).to be false
+    end
+  end
+end