Add snooze calls to improve test stability.

module/VuFind/tests/integration-tests/src/VuFindTest/Mink/FavoritesTest.php

@@ -325,6 +325,7 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
         $page = $this->gotoSearch();
 
         $this->findCss($page, '.save-record')->click();
+        $this->snooze();
         // Login
         // - empty
         $this->submitLoginForm($page);
@@ -338,21 +339,26 @@ class FavoritesTest extends \VuFindTest\Unit\MinkTestCase
         // Make Two Lists
         // - One for the next test
         $this->findCss($page, '#make-list')->click();
+        $this->snooze();
         $this->findCss($page, '#list_title')->setValue('Future List');
         $this->findCss($page, '.modal-body .btn.btn-primary')->click();
+        $this->snooze();
         $this->assertEquals(
             $this->findCss($page, '#save_list option[selected]')->getHtml(),
             'Future List'
         );
         // - One for now
         $this->findCss($page, '#make-list')->click();
+        $this->snooze();
         $this->findCss($page, '#list_title')->setValue('Login Test List');
         $this->findCss($page, '.modal-body .btn.btn-primary')->click();
+        $this->snooze();
         $this->assertEquals(
             $this->findCss($page, '#save_list option[selected]')->getHtml(),
             'Login Test List'
         );
         $this->findCss($page, '.modal-body .btn.btn-primary')->click();
+        $this->snooze();
         $this->findCss($page, '.alert.alert-success');
     }