3 files changed, 70 insertions, 2 deletions
diff --git a/spec/services/members/invitation_reminder_email_service_spec.rb b/spec/services/members/invitation_reminder_email_service_spec.rb
index 88280869476..7cb30662152 100644
--- a/spec/services/members/invitation_reminder_email_service_spec.rb
+++ b/spec/services/members/invitation_reminder_email_service_spec.rb
@@ -11,7 +11,7 @@ RSpec.describe Members::InvitationReminderEmailService do
 
     context 'when the experiment is disabled' do
       before do
-        allow(Gitlab::Experimentation).to receive(:enabled_for_attribute?).and_return(false)
+        allow(Gitlab::Experimentation).to receive(:in_experiment_group?).and_return(false)
         invitation.expires_at = frozen_time + 2.days
       end
 
@@ -26,7 +26,7 @@ RSpec.describe Members::InvitationReminderEmailService do
 
     context 'when the experiment is enabled' do
       before do
-        allow(Gitlab::Experimentation).to receive(:enabled_for_attribute?).and_return(true)
+        allow(Gitlab::Experimentation).to receive(:in_experiment_group?).and_return(true)
         invitation.expires_at = frozen_time + expires_at_days.days if expires_at_days
       end
 
diff --git a/spec/services/notification_service_spec.rb b/spec/services/notification_service_spec.rb
index 34a95c0505d..28577821231 100644
--- a/spec/services/notification_service_spec.rb
+++ b/spec/services/notification_service_spec.rb
@@ -2326,6 +2326,20 @@ RSpec.describe NotificationService, :mailer do
     end
   end
 
+  describe '#user_admin_rejection', :deliver_mails_inline do
+    let_it_be(:user) { create(:user, :blocked_pending_approval) }
+
+    before do
+      reset_delivered_emails!
+    end
+
+    it 'sends the user a rejection email' do
+      notification.user_admin_rejection(user.name, user.email)
+
+      should_only_email(user)
+    end
+  end
+
   describe 'GroupMember', :deliver_mails_inline do
     let(:added_user) { create(:user) }
 
diff --git a/spec/services/users/reject_service_spec.rb b/spec/services/users/reject_service_spec.rb
new file mode 100644
index 00000000000..07863d1a290
--- /dev/null
+++ b/spec/services/users/reject_service_spec.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Users::RejectService do
+  let_it_be(:current_user) { create(:admin) }
+  let(:user) { create(:user, :blocked_pending_approval) }
+
+  subject(:execute) { described_class.new(current_user).execute(user) }
+
+  describe '#execute' do
+    context 'failures' do
+      context 'when the executor user is not allowed to reject users' do
+        let(:current_user) { create(:user) }
+
+        it 'returns error result' do
+          expect(subject[:status]).to eq(:error)
+          expect(subject[:message]).to match(/You are not allowed to reject a user/)
+        end
+      end
+
+      context 'when the executor user is an admin in admin mode', :enable_admin_mode do
+        context 'when user is not in pending approval state' do
+          let(:user) { create(:user, state: 'active') }
+
+          it 'returns error result' do
+            expect(subject[:status]).to eq(:error)
+            expect(subject[:message])
+              .to match(/This user does not have a pending request/)
+          end
+        end
+      end
+    end
+
+    context 'success' do
+      context 'when the executor user is an admin in admin mode', :enable_admin_mode do
+        it 'deletes the user', :sidekiq_inline do
+          subject
+
+          expect(subject[:status]).to eq(:success)
+          expect { User.find(user.id) }.to raise_error(ActiveRecord::RecordNotFound)
+        end
+
+        it 'emails the user on rejection' do
+          expect_next_instance_of(NotificationService) do |notification|
+            allow(notification).to receive(:user_admin_rejection).with(user.name, user.notification_email)
+          end
+
+          subject
+        end
+      end
+    end
+  end
+end