Import Drupal 8 include for drush 9.

src/Commands/BehatDrushEndpointCommands.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Drush\Commands;
+
+use Drush\Commands\DrushCommands;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\node\Entity\Node;
+use Drupal\node\NodeInterface;
+use Drupal\taxonomy\Entity\Term;
+use Drupal\taxonomy\TermInterface;
+
+/**
+ * A Drush commandfile.
+ *
+ * Contains Behat Drush commands, for use by the Behat Drush Extension.
+ * These commands are specifically for Drush 9
+ *
+ * See these files for an example of injecting Drupal services:
+ *   - http://cgit.drupalcode.org/devel/tree/src/Commands/DevelCommands.php
+ *   - http://cgit.drupalcode.org/devel/tree/drush.services.yml
+ */
+class BehatDrushEndpointCommands extends DrushCommands {
+
+  public function __construct() {
+    include __DIR__ . '/../../behat.d8.drush.inc';
+  }
+
+  /**
+   * Behat Drush endpoint. Serves as an entrypoint for Behat to make remote calls into the Drupal site being tested.
+   *
+   * @param $operation
+   *   Behat operation, e.g. create-node.
+   * @param $data
+   *   Operation data in json format.
+   * @usage drush behat create-node '{"title":"Example page","type":"page"}'
+   *   Create a page with the title "Example page".
+   *
+   * @bootstrap full
+   * @command behat:create
+   * @aliases behat
+   */
+  public function behat($operation, $data) {
+    $obj = json_decode($data);
+
+    // Dispatch if the operation exists.
+    $fn = 'drush_behat_op_' . strtr($operation, '-', '_');
+    if (function_exists($fn)) {
+      return $fn($obj);
+    }
+    else {
+      throw new \Exception(dt("Operation '!op' unknown", array('!op' => $operation)));
+    }
+  }
+
+}