Issue #3010132 by Krzysztof Domański, dhirendra.mishra, longwave, joachim, jhedstrom, timmillwood, Berdir, catch: NodeCreationTrait::createNode() doesn't work in kernel tests without the Filter module

core/modules/node/tests/src/Traits/NodeCreationTrait.php

@@ -51,7 +51,8 @@ trait NodeCreationTrait {
    *       'type' => 'article',
    *     ));
    *   @endcode
-   *   The following defaults are provided:
+   *   The following defaults are provided, if the node has the field in
+   *   question:
    *   - body: Random string using the default filter format:
    *     @code
    *       $values['body'][0] = array(
@@ -69,32 +70,38 @@ trait NodeCreationTrait {
   protected function createNode(array $values = []) {
     // Populate defaults array.
     $values += [
-      'body'      => [
+      'title' => $this->randomMachineName(8),
-        [
+      'type' => 'page',
-          'value' => $this->randomMachineName(32),
-          'format' => filter_default_format(),
-        ],
-      ],
-      'title'     => $this->randomMachineName(8),
-      'type'      => 'page',
     ];
 
+    // Create node object.
+    $node = Node::create($values);
+
+    // If the node has a field named 'body', we assume it's a body field and
+    // that the filter module is present.
+    if (!array_key_exists('body', $values) && $node->hasField('body')) {
+      $body = [
+        'value' => $this->randomMachineName(32),
+        'format' => filter_default_format(),
+      ];
+      $node->set('body', $body);
+    }
+
     if (!array_key_exists('uid', $values)) {
       $user = User::load(\Drupal::currentUser()->id());
       if ($user) {
-        $values['uid'] = $user->id();
+        $uid = $user->id();
       }
       elseif (method_exists($this, 'setUpCurrentUser')) {
         /** @var \Drupal\user\UserInterface $user */
         $user = $this->setUpCurrentUser();
-        $values['uid'] = $user->id();
+        $uid = $user->id();
       }
       else {
-        $values['uid'] = 0;
+        $uid = 0;
       }
+      $node->set('uid', $uid);
     }
-
-    $node = Node::create($values);
     $node->save();
 
     return $node;