diff -u b/core/modules/migrate_drupal/tests/src/Traits/CreateTestContentEntitiesTrait.php b/core/modules/migrate_drupal/tests/src/Traits/CreateTestContentEntitiesTrait.php
--- b/core/modules/migrate_drupal/tests/src/Traits/CreateTestContentEntitiesTrait.php
+++ b/core/modules/migrate_drupal/tests/src/Traits/CreateTestContentEntitiesTrait.php
@@ -60,129 +60,164 @@
    * Create several pieces of generic content.
    */
   protected function createContent() {
+    $entityTypeManager = \Drupal::entityTypeManager();
+
     // Create an aggregator feed.
-    $feed = Feed::create([
-      'title' => 'feed',
-      'url' => 'http://www.example.com',
-    ]);
-    $feed->save();
+    if ($entityTypeManager->hasDefinition('aggregator_feed')) {
+      $feed = Feed::create([
+        'title' => 'feed',
+        'url' => 'http://www.example.com',
+      ]);
+      $feed->save();
+    }
 
     // Create an aggregator feed item.
-    $item = Item::create([
-      'title' => 'feed item',
-      'fid' => $feed->id(),
-      'link' => 'http://www.example.com',
-    ]);
-    $item->save();
+    if ($entityTypeManager->hasDefinition('aggregator_item')) {
+      $item = Item::create([
+        'title' => 'feed item',
+        'fid' => $feed->id(),
+        'link' => 'http://www.example.com',
+      ]);
+      $item->save();
+    }
 
     // Create a block content.
-    $block = BlockContent::create([
-      'info' => 'block',
-      'type' => 'block',
-    ]);
-    $block->save();
+    if ($entityTypeManager->hasDefinition('block_content')) {
+      $block = BlockContent::create([
+        'info' => 'block',
+        'type' => 'block',
+      ]);
+      $block->save();
+    }
 
     // Create a node.
-    $node = Node::create([
-      'type' => 'page',
-      'title' => 'page',
-    ]);
-    $node->save();
+    if ($entityTypeManager->hasDefinition('node')) {
+      $node = Node::create([
+        'type' => 'page',
+        'title' => 'page',
+      ]);
+      $node->save();
+    }
 
     // Create a comment.
-    $comment = Comment::create([
-      'comment_type' => 'comment',
-      'field_name' => 'comment',
-      'entity_type' => 'node',
-      'entity_id' => $node->id(),
-    ]);
-    $comment->save();
+    if ($entityTypeManager->hasDefinition('comment')) {
+      $comment = Comment::create([
+        'comment_type' => 'comment',
+        'field_name' => 'comment',
+        'entity_type' => 'node',
+        'entity_id' => $node->id(),
+      ]);
+      $comment->save();
+    }
 
     // Create a file.
-    $file = File::create([
-      'uri' => 'public://example.txt',
-    ]);
-    $file->save();
+    if ($entityTypeManager->hasDefinition('file')) {
+      $file = File::create([
+        'uri' => 'public://example.txt',
+      ]);
+      $file->save();
+    }
 
     // Create a menu link.
-    $menu_link = MenuLinkContent::create([
-      'title' => 'menu link',
-      'link' => ['uri' => 'http://www.example.com'],
-      'menu_name' => 'tools',
-    ]);
-    $menu_link->save();
+    if ($entityTypeManager->hasDefinition('menu_link_content')) {
+      $menu_link = MenuLinkContent::create([
+        'title' => 'menu link',
+        'link' => ['uri' => 'http://www.example.com'],
+        'menu_name' => 'tools',
+      ]);
+      $menu_link->save();
+    }
 
     // Create a taxonomy term.
-    $term = Term::create([
-      'name' => 'term',
-      'vid' => 'term',
-    ]);
-    $term->save();
+    if ($entityTypeManager->hasDefinition('taxonomy_term')) {
+      $term = Term::create([
+        'name' => 'term',
+        'vid' => 'term',
+      ]);
+      $term->save();
+    }
 
     // Create a user.
-    $user = User::create([
-      'uid' => 2,
-      'name' => 'user',
-      'mail' => 'user@example.com',
-    ]);
-    $user->save();
+    if ($entityTypeManager->hasDefinition('user')) {
+      $user = User::create([
+        'uid' => 2,
+        'name' => 'user',
+        'mail' => 'user@example.com',
+      ]);
+      $user->save();
+    }
   }
 
   /**
    * Create several pieces of generic content.
    */
   protected function createContentPostUpgrade() {
+    $entityTypeManager = \Drupal::entityTypeManager();
+
     // Create a block content.
-    $block = BlockContent::create([
-      'info' => 'Post upgrade block',
-      'type' => 'block',
-    ]);
-    $block->save();
+    if ($entityTypeManager->hasDefinition('block_content')) {
+      $block = BlockContent::create([
+        'info' => 'Post upgrade block',
+        'type' => 'block',
+      ]);
+      $block->save();
+    }
 
     // Create a node.
-    $node = Node::create([
-      'type' => 'page',
-      'title' => 'Post upgrade page',
-    ]);
-    $node->save();
+    if ($entityTypeManager->hasDefinition('node')) {
+      $node = Node::create([
+        'type' => 'page',
+        'title' => 'Post upgrade page',
+      ]);
+      $node->save();
+    }
 
     // Create a comment.
-    $comment = Comment::create([
-      'comment_type' => 'comment',
-      'field_name' => 'comment',
-      'entity_type' => 'node',
-      'entity_id' => $node->id(),
-    ]);
-    $comment->save();
-
+    if ($entityTypeManager->hasDefinition('comment')) {
+      $comment = Comment::create([
+        'comment_type' => 'comment',
+        'field_name' => 'comment',
+        'entity_type' => 'node',
+        'entity_id' => $node->id(),
+      ]);
+      $comment->save();
+    }
     // Create a file.
-    $file = File::create([
-      'uri' => 'public://post_upgrade_example.txt',
-    ]);
-    $file->save();
+    if ($entityTypeManager->hasDefinition('file')) {
+      $file = File::create([
+        'uri' => 'public://post_upgrade_example.txt',
+      ]);
+      $file->save();
+    }
 
     // Create a menu link.
-    $menu_link = MenuLinkContent::create([
-      'title' => 'post upgrade menu link',
-      'link' => ['uri' => 'http://www.drupal.org'],
-      'menu_name' => 'tools',
-    ]);
-    $menu_link->save();
+    if ($entityTypeManager->hasDefinition('menu_link_content')) {
+      $menu_link = MenuLinkContent::create([
+        'title' => 'post upgrade menu link',
+        'link' => ['uri' => 'http://www.drupal.org'],
+        'menu_name' => 'tools',
+      ]);
+      $menu_link->save();
+    }
 
     // Create a taxonomy term.
-    $term = Term::create([
-      'name' => 'post upgrade term',
-      'vid' => 'term',
-    ]);
-    $term->save();
+    if ($entityTypeManager->hasDefinition('taxonomy_term')) {
+      $term = Term::create([
+        'name' => 'post upgrade term',
+        'vid' => 'term',
+      ]);
+      $term->save();
+    }
 
     // Create a user.
-    $user = User::create([
-      'uid' => 42,
-      'name' => 'universe',
-      'mail' => 'universe@example.com',
-    ]);
-    $user->save();
+    if ($entityTypeManager->hasDefinition('user')) {
+      $user = User::create([
+        'uid' => 42,
+        'name' => 'universe',
+        'mail' => 'universe@example.com',
+      ]);
+      $user->save();
+    }
   }
 
 }