.../Normalizer/EntityReferenceFieldItemNormalizerTest.php  | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php b/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php
index e9df564..f0849d7 100644
--- a/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php
+++ b/core/modules/serialization/tests/src/Unit/Normalizer/EntityReferenceFieldItemNormalizerTest.php
@@ -4,12 +4,14 @@
 
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\GeneratedUrl;
 use Drupal\Core\TypedData\TypedDataInterface;
 use Drupal\Core\Entity\EntityRepositoryInterface;
 use Drupal\Core\Entity\FieldableEntityInterface;
 use Drupal\Core\Field\FieldItemInterface;
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem;
+use Drupal\Core\Url;
 use Drupal\serialization\Normalizer\EntityReferenceFieldItemNormalizer;
 use Drupal\Tests\UnitTestCase;
 use Prophecy\Argument;
@@ -104,9 +106,17 @@ public function testSupportsDenormalization() {
   public function testNormalize() {
     $test_url = '/test/100';
 
+    $generated_url = (new GeneratedUrl())->setGeneratedUrl($test_url);
+
+    $url = $this->prophesize(Url::class);
+    $url->toString(TRUE)
+      ->willReturn($generated_url);
+
     $entity = $this->prophesize(EntityInterface::class);
-    $entity->url('canonical')
-      ->willReturn($test_url)
+    $entity->hasLinkTemplate('canonical')
+      ->willReturn(TRUE);
+    $entity->toUrl('canonical')
+      ->willReturn($url)
       ->shouldBeCalled();
     $entity->uuid()
       ->willReturn('080e3add-f9d5-41ac-9821-eea55b7b42fb')