diff -u b/core/modules/block/src/Tests/BlockTest.php b/core/modules/block/src/Tests/BlockTest.php
--- b/core/modules/block/src/Tests/BlockTest.php
+++ b/core/modules/block/src/Tests/BlockTest.php
@@ -485,6 +485,9 @@
    * Tests block_node_type_delete.
    */
   public function testBlockNodeTypeDelete() {
+    // Enable the node module.
+    \Drupal::moduleHandler()->install(['node']);
+
     $node_type1 = $this->drupalCreateContentType();
     $node_type2 = $this->drupalCreateContentType();
 
reverted:
--- b/core/modules/block/src/Tests/BlockTestBase.php
+++ a/core/modules/block/src/Tests/BlockTestBase.php
@@ -19,7 +19,7 @@
    *
    * @var array
    */
+  public static $modules = array('block', 'filter', 'test_page_test', 'help', 'block_test');
-  public static $modules = array('block', 'filter', 'test_page_test', 'help', 'block_test', 'node');
 
   /**
    * A list of theme regions to test.