MC-40073: Create automated test for: "Guest and customer comparison lists merging"

Author: ysapiga

dev/tests/integration/testsuite/Magento/Catalog/Observer/Compare/BindCustomerLoginObserverTest.php

@@ -50,6 +50,17 @@ protected function setUp(): void
         $this->listCompareFactory = $this->objectManager->get(ListCompareFactory::class);
     }
 
+    /**
+     * @inheritdoc
+     */
+    protected function tearDown(): void
+    {
+        $this->session->logout();
+        $this->visitor->setId(null);
+
+        parent::tearDown();
+    }
+
     /**
      * @magentoDataFixture Magento/Catalog/_files/visitor_compare_list.php
      * @magentoDataFixture Magento/Customer/_files/customer.php