Add :registrations_recaptcha feature flag

Allows instance owners to toggle the recaptcha requirement
on the user registration page by feature flag.
Allows GitLab Growth team to measure
reCAPTCHA's impact on registrations.

1 files changed, 17 insertions, 2 deletions

diff --git a/spec/controllers/registrations_controller_spec.rb b/spec/controllers/registrations_controller_spec.rb
index 088c515c3a6..9a598790ff2 100644
--- a/spec/controllers/registrations_controller_spec.rb
+++ b/spec/controllers/registrations_controller_spec.rb
@@ -46,13 +46,17 @@ describe RegistrationsController do
     end
 
     context 'when reCAPTCHA is enabled' do
+      def fail_recaptcha
+        # Without this, `verify_recaptcha` arbitrarily returns true in test env
+        Recaptcha.configuration.skip_verify_env.delete('test')
+      end
+
       before do
         stub_application_setting(recaptcha_enabled: true)
       end
 
       it 'displays an error when the reCAPTCHA is not solved' do
-        # Without this, `verify_recaptcha` arbitrarily returns true in test env
-        Recaptcha.configuration.skip_verify_env.delete('test')
+        fail_recaptcha
 
         post(:create, params: user_params)
 
@@ -70,6 +74,17 @@ describe RegistrationsController do
 
         expect(flash[:notice]).to include 'Welcome! You have signed up successfully.'
       end
+
+      it 'does not require reCAPTCHA if disabled by feature flag' do
+        stub_feature_flags(registrations_recaptcha: false)
+        fail_recaptcha
+
+        post(:create, params: user_params)
+
+        expect(controller).not_to receive(:verify_recaptcha)
+        expect(flash[:alert]).to be_nil
+        expect(flash[:notice]).to include 'Welcome! You have signed up successfully.'
+      end
     end
 
     context 'when terms are enforced' do