Track the sent and accepted events

For the invitation reminders experiment

app/controllers/invites_controller.rb

@@ -13,13 +13,14 @@ class InvitesController < ApplicationController
   respond_to :html
 
   def show
-    track_experiment('opened')
+    track_new_user_invite_experiment('opened')
     accept if skip_invitation_prompt?
   end
 
   def accept
     if member.accept_invite!(current_user)
-      track_experiment('accepted')
+      track_new_user_invite_experiment('accepted')
+      track_invitation_reminders_experiment('accepted')
       redirect_to invite_details[:path], notice: _("You have been granted %{member_human_access} access to %{title} %{name}.") %
         { member_human_access: member.human_access, title: invite_details[:title], name: invite_details[:name] }
     else
@@ -105,13 +106,25 @@ class InvitesController < ApplicationController
                         end
   end
 
-  def track_experiment(action)
+  def track_new_user_invite_experiment(action)
     return unless params[:new_user_invite]
 
     property = params[:new_user_invite] == 'experiment' ? 'experiment_group' : 'control_group'
 
+    track_experiment(:invite_email, action, property)
+  end
+
+  def track_invitation_reminders_experiment(action)
+    return unless Gitlab::Experimentation.enabled?(:invitation_reminders)
+
+    property = Gitlab::Experimentation.enabled_for_attribute?(:invitation_reminders, member.invite_email) ? 'experimental_group' : 'control_group'
+
+    track_experiment(:invitation_reminders, action, property)
+  end
+
+  def track_experiment(experiment_key, action, property)
     Gitlab::Tracking.event(
-      Gitlab::Experimentation::EXPERIMENTS[:invite_email][:tracking_category],
+      Gitlab::Experimentation.experiment(experiment_key).tracking_category,
       action,
       property: property,
       label: Digest::MD5.hexdigest(member.to_global_id.to_s)

app/mailers/emails/members.rb

@@ -77,6 +77,15 @@ module Emails
           Gitlab::Tracking.event(Gitlab::Experimentation::EXPERIMENTS[:invite_email][:tracking_category], 'sent', property: 'control_group')
         end
       end
+
+      if member.invite_to_unknown_user? && Gitlab::Experimentation.enabled?(:invitation_reminders)
+        Gitlab::Tracking.event(
+          Gitlab::Experimentation.experiment(:invitation_reminders).tracking_category,
+          'sent',
+          property: Gitlab::Experimentation.enabled_for_attribute?(:invitation_reminders, member.invite_email) ? 'experimental_group' : 'control_group',
+          label: Digest::MD5.hexdigest(member.to_global_id.to_s)
+        )
+      end
     end
 
     def member_invite_accepted_email(member_source_type, member_id)

spec/controllers/invites_controller_spec.rb

@@ -29,6 +29,43 @@ RSpec.describe InvitesController, :snowplow do
     end
   end
 
+  shared_examples "tracks the 'accepted' event for the invitation reminders experiment" do
+    before do
+      stub_experiment(invitation_reminders: true)
+      allow(Gitlab::Experimentation).to receive(:enabled_for_attribute?).with(:invitation_reminders, member.invite_email).and_return(experimental_group)
+    end
+
+    context 'when in the control group' do
+      let(:experimental_group) { false }
+
+      it "tracks the 'accepted' event" do
+        request
+
+        expect_snowplow_event(
+          category: 'Growth::Acquisition::Experiment::InvitationReminders',
+          label: md5_member_global_id,
+          property: 'control_group',
+          action: 'accepted'
+        )
+      end
+    end
+
+    context 'when in the experimental group' do
+      let(:experimental_group) { true }
+
+      it "tracks the 'accepted' event" do
+        request
+
+        expect_snowplow_event(
+          category: 'Growth::Acquisition::Experiment::InvitationReminders',
+          label: md5_member_global_id,
+          property: 'experimental_group',
+          action: 'accepted'
+        )
+      end
+    end
+  end
+
   describe 'GET #show' do
     subject(:request) { get :show, params: params }
 
@@ -89,6 +126,7 @@ RSpec.describe InvitesController, :snowplow do
         end
       end
 
+      it_behaves_like "tracks the 'accepted' event for the invitation reminders experiment"
       it_behaves_like 'invalid token'
     end
 
@@ -150,6 +188,7 @@ RSpec.describe InvitesController, :snowplow do
       end
     end
 
+    it_behaves_like "tracks the 'accepted' event for the invitation reminders experiment"
     it_behaves_like 'invalid token'
   end
 

spec/mailers/notify_spec.rb

@@ -1508,12 +1508,44 @@ RSpec.describe Notify do
       )
     end
 
-    describe 'group invitation' do
+    describe 'invitations' do
       let(:owner) { create(:user).tap { |u| group.add_user(u, Gitlab::Access::OWNER) } }
       let(:group_member) { invite_to_group(group, inviter: inviter) }
       let(:inviter) { owner }
 
-      subject { described_class.member_invited_email('group', group_member.id, group_member.invite_token) }
+      subject { described_class.member_invited_email('Group', group_member.id, group_member.invite_token) }
+
+      shared_examples "tracks the 'sent' event for the invitation reminders experiment" do
+        before do
+          stub_experiment(invitation_reminders: true)
+          allow(Gitlab::Experimentation).to receive(:enabled_for_attribute?).with(:invitation_reminders, group_member.invite_email).and_return(experimental_group)
+        end
+
+        it "tracks the 'sent' event", :snowplow do
+          subject.deliver_now
+
+          expect_snowplow_event(
+            category: 'Growth::Acquisition::Experiment::InvitationReminders',
+            label: Digest::MD5.hexdigest(group_member.to_global_id.to_s),
+            property: experimental_group ? 'experimental_group' : 'control_group',
+            action: 'sent'
+          )
+        end
+      end
+
+      describe 'tracking for the invitation reminders experiment' do
+        context 'when invite email is in the experimental group' do
+          let(:experimental_group) { true }
+
+          it_behaves_like "tracks the 'sent' event for the invitation reminders experiment"
+        end
+
+        context 'when invite email is in the control group' do
+          let(:experimental_group) { false }
+
+          it_behaves_like "tracks the 'sent' event for the invitation reminders experiment"
+        end
+      end
 
       context 'when invite_email_experiment is disabled' do
         before do