diff --git a/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php b/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php
index 79eb3b2..bb97044 100644
--- a/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php
+++ b/core/tests/Drupal/Tests/Core/Entity/TypedData/EntityAdapterUnitTest.php
@@ -190,12 +190,20 @@ protected function setUp() {
       ->method('createFieldItemList')
       ->willReturn($this->fieldItemList);
 
+    $typed_data_manager = $this->getMock('Drupal\Component\Plugin\PluginManagerInterface');
+    // @todo: maybe use a reasonable argument
+    $typed_data_manager->expects($this->any())
+      ->method('getDefinition')
+      ->with($this->anything())
+      ->will($this->returnValue(['list_class' => '\Drupal\Core\Field\FieldItemList']));
+
     $container = new ContainerBuilder();
     $container->set('entity.manager', $this->entityManager);
     $container->set('uuid', $this->uuid);
     $container->set('typed_data_manager', $this->typedDataManager);
     $container->set('language_manager', $this->languageManager);
     $container->set('plugin.manager.field.field_type', $this->fieldTypePluginManager);
+    $container->set('typed_data_manager', $typed_data_manager);
     \Drupal::setContainer($container);
 
     $this->fieldDefinitions = array(