Add distinct tracking value for invite members version b

- to allow tracking funnel exactness for experimentation.

app/helpers/invite_members_helper.rb

@@ -23,6 +23,14 @@ module InviteMembersHelper
     end
   end
 
+  def show_invite_members_track_event
+    if directly_invite_members?
+      'show_invite_members'
+    elsif indirectly_invite_members?
+      'show_invite_members_version_b'
+    end
+  end
+
   def invite_group_members?(group)
     experiment_enabled?(:invite_members_empty_group_version_a) && Ability.allowed?(current_user, :admin_group_member, group)
   end

app/views/shared/issuable/_sidebar_assignees.html.haml

@@ -43,6 +43,9 @@
     - options[:dropdown_class] += ' dropdown-extended-height'
     - options[:footer_content] = true
     - options[:wrapper_class] = 'js-sidebar-assignee-dropdown'
+    - options[:toggle_class] += ' js-invite-members-track'
+    - data['track-event'] = show_invite_members_track_event
+    - options[:data].merge!(data)
     - invite_text = _('Invite Members')
     - track_label = 'edit_assignee'
 

ee/app/assets/javascripts/projects/track_invite_members.js

@@ -2,8 +2,8 @@ import $ from 'jquery';
 import Tracking from '~/tracking';
 
 export default function initTrackInviteMembers(assigneeDropdown) {
-  const trackEvent = 'show_invite_members';
   const trackLabel = 'edit_assignee';
+  const { trackEvent } = assigneeDropdown.querySelector('.js-invite-members-track').dataset;
 
   $(assigneeDropdown).on('shown.bs.dropdown', () => {
     Tracking.event(undefined, trackEvent, {

ee/spec/frontend/projects/track_invite_members_spec.js

@@ -4,18 +4,23 @@ import { mockTracking, unmockTracking } from 'helpers/tracking_helper';
 
 describe('Track user dropdown open', () => {
   let trackingSpy;
-  let selector;
+  let dropdownElement;
 
   beforeEach(() => {
-    setFixtures(`
-      <div class="js-sidebar-assignee-dropdown">
-      </div>`);
+    document.body.innerHTML = `
+      <div id="dummy-wrapper-element">
+        <div class="js-sidebar-assignee-dropdown">
+          <div class="js-invite-members-track" data-track-event="_track_event_">
+          </div>
+        </div>
+      </div>
+    `;
 
-    selector = $('.js-sidebar-assignee-dropdown');
-    trackingSpy = mockTracking('_category_', selector.element, jest.spyOn);
+    dropdownElement = document.querySelector('.js-sidebar-assignee-dropdown');
+    trackingSpy = mockTracking('_category_', dropdownElement, jest.spyOn);
     document.body.dataset.page = 'some:page';
 
-    trackShowInviteMemberLink(selector);
+    trackShowInviteMemberLink(dropdownElement);
   });
 
   afterEach(() => {
@@ -23,9 +28,9 @@ describe('Track user dropdown open', () => {
   });
 
   it('sends a tracking event when the dropdown is opened and contains Invite Members link', () => {
-    selector.trigger('shown.bs.dropdown');
+    $(dropdownElement).trigger('shown.bs.dropdown');
 
-    expect(trackingSpy).toHaveBeenCalledWith(undefined, 'show_invite_members', {
+    expect(trackingSpy).toHaveBeenCalledWith(undefined, '_track_event_', {
       label: 'edit_assignee',
     });
   });

spec/helpers/invite_members_helper_spec.rb

@@ -11,6 +11,21 @@ RSpec.describe InviteMembersHelper do
     helper.extend(Gitlab::Experimentation::ControllerConcern)
   end
 
+  describe '#show_invite_members_track_event' do
+    it 'shows values when can directly invite members' do
+      allow(helper).to receive(:directly_invite_members?).and_return(true)
+
+      expect(helper.show_invite_members_track_event).to eq 'show_invite_members'
+    end
+
+    it 'shows values when can indirectly invite members' do
+      allow(helper).to receive(:directly_invite_members?).and_return(false)
+      allow(helper).to receive(:indirectly_invite_members?).and_return(true)
+
+      expect(helper.show_invite_members_track_event).to eq 'show_invite_members_version_b'
+    end
+  end
+
   context 'with project' do
     before do
       assign(:project, project)