$file = $this->getTestFile('image');
$edit = [
- 'files[file_0]' => drupal_realpath($file->getFileUri()),
+ 'files[file_0]' => \Drupal::service('file_system')->realpath($file->getFileUri()),
];
$this->drupalPostForm(NULL, $edit, t('Save'));
$node = Node::load($node->id());