Add a feature flag [MAILPOET-1483]

lib/Config/Hooks.php

@@ -157,6 +157,9 @@ class Hooks {
   }
 
   function setupWooCommerceSubscriptionEvents() {
+    if (!$this->settings->get('woo_commerce_list_sync_enabled')) {
+      return false;
+    }
 
     $woocommerce = $this->settings->get('woocommerce', []);
     // WooCommerce: subscribe on checkout

tests/acceptance/WooCommerceSettingsTabCest.php

@@ -2,10 +2,17 @@
 
 namespace MailPoet\Test\Acceptance;
 
+require_once __DIR__ . '/../DataFactories/Settings.php';
+
+use MailPoet\Test\DataFactories\Settings;
+
 class WooCommerceSettingsTabCest {
 
   function _before(\AcceptanceTester $I) {
     $I->activateWooCommerce();
+    $this->settings_factory = new Settings();
+    $this->settings_factory->withWooCommerceListImportPageDisplayed(true);
+    $this->settings_factory->withWooCommerceListSyncEnabled();
   }
 
   function checkWooCommerceTabExists(\AcceptanceTester $I) {

tests/integration/WooCommerce/SubscriptionTest.php

@@ -15,6 +15,7 @@ class SubscriptionTest extends \MailPoetTest {
     $this->order_id = 123; // dummy
     $this->subscription = ContainerWrapper::getInstance()->get(Subscription::class);
     $this->settings = new SettingsController();
+    $this->settings->set('woo_commerce_list_sync_enabled', 1);
     $this->wc_segment = Segment::getWooCommerceSegment();
 
     $subscriber = Subscriber::create();

views/settings/woocommerce.html

@@ -1,4 +1,5 @@
 <table class="form-table">
+  <% if settings.woo_commerce_list_sync_enabled %>
   <tr>
     <th scope="row">
       <label for="settings[woocommerce_optin_on_checkout]">
@@ -45,6 +46,7 @@
       </p>
     </td>
   </tr>
+  <% endif %>
   <tr>
     <th scope="row">
       <label for="settings[mailpoet_subscribe_old_woocommerce_customers]">