1 files changed, 44 insertions, 0 deletions
diff --git a/spec/features/gitlab_experiments_spec.rb b/spec/features/gitlab_experiments_spec.rb
new file mode 100644
index 00000000000..76b418adcea
--- /dev/null
+++ b/spec/features/gitlab_experiments_spec.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe "Gitlab::Experiment", :js do
+  # This is part of a set of tests that ensure that tracking remains
+  # consistent at the front end layer. Since we don't want to actually
+  # introduce an experiment in real code, we're going to simulate it
+  # here.
+  let(:user) { create(:user) }
+
+  before do
+    admin = create(:admin)
+    sign_in(admin)
+    gitlab_enable_admin_mode_sign_in(admin)
+    stub_experiments(null_hypothesis: :candidate)
+  end
+
+  describe 'with event tracking' do
+    it 'publishes the experiments that have been run to the client', :experiment do
+      allow_next_instance_of(Admin::AbuseReportsController) do |instance|
+        allow(instance).to receive(:index).and_wrap_original do |original|
+          instance.experiment(:null_hypothesis, user: instance.current_user) do |e|
+            e.use { original.call }
+            e.try { original.call }
+          end
+        end
+      end
+
+      visit admin_abuse_reports_path
+
+      expect(page).to have_content('Abuse Reports')
+
+      published_experiments = page.evaluate_script('window.gon.experiment')
+      expect(published_experiments).to include({
+        'null_hypothesis' => {
+          'experiment' => 'null_hypothesis',
+          'key' => anything,
+          'variant' => 'candidate'
+        }
+      })
+    end
+  end
+end