Add checkbox in UI to opt into receiving notifications about your activity

app/assets/javascripts/profile/profile.js.es6

@@ -25,6 +25,7 @@
     bindEvents() {
       $('.js-preferences-form').on('change.preference', 'input[type=radio]', this.submitForm);
       $('#user_notification_email').on('change', this.submitForm);
+      $('#user_notified_of_own_activity').on('change', this.submitForm);
       $('.update-username').on('ajax:before', this.beforeUpdateUsername);
       $('.update-username').on('ajax:complete', this.afterUpdateUsername);
       $('.update-notifications').on('ajax:success', this.onUpdateNotifs);

app/views/profiles/notifications/show.html.haml

@@ -34,6 +34,11 @@
 
       .clearfix
 
+      = form_for @user, url: profile_notifications_path, method: :put do |f|
+        %label{ for: 'user_notified_of_own_activity' }
+          = f.check_box :notified_of_own_activity
+          %span Receive notifications about your own activity
+
       %hr
       %h5
         Groups (#{@group_notifications.count})

spec/features/profiles/user_changes_notified_of_own_activity_spec.rb

+require 'spec_helper'
+
+feature 'Profile > Notifications > User changes notified_of_own_activity setting', feature: true, js: true do
+  let(:user) { create(:user) }
+
+  before do
+    login_as(user)
+  end
+
+  scenario 'User opts into receiving notifications about their own activity' do
+    visit profile_notifications_path
+
+    expect(page).not_to have_checked_field('user[notified_of_own_activity]')
+
+    page.find('#user_notified_of_own_activity').set(true)
+
+    expect(page).to have_content('Notification settings saved')
+    expect(page).to have_checked_field('user[notified_of_own_activity]')
+  end
+
+  scenario 'User opts out of receiving notifications about their own activity' do
+    user.update!(notified_of_own_activity: true)
+    visit profile_notifications_path
+
+    expect(page).to have_checked_field('user[notified_of_own_activity]')
+
+    page.find('#user_notified_of_own_activity').set(false)
+
+    expect(page).to have_content('Notification settings saved')
+    expect(page).not_to have_checked_field('user[notified_of_own_activity]')
+  end
+end