ISTWCMS-4838 Show error message when create catalog item without catalog term created

tests/src/Functional/UwWcmsBasicTest.php

@@ -371,6 +371,11 @@ class UwWcmsBasicTest extends BrowserTestBase {
         $audience = $this->getSession()->getPage()->find('xpath', "//span[contains(text(), 'Audience')]");
         $this->assertEquals('edit-field-uw-audience--wrapper', $audience->getParent()->getParent()->getAttribute('id'));
       }
+      else {
+        // The message is displayed when creating a catalog item
+        // without a catalog term created.
+        $this->assertSession()->pageTextContains('You must create at least one catalog before adding a catalog item.');
+      }
     }
 
     // Test field_uw_event_map exists.