Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/config/src/Tests/SchemaCheckTestTrait.php

@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\config\Tests\SchemaCheckTestTrait.
+ */
+
+namespace Drupal\config\Tests;
+
+use Drupal\Core\Config\TypedConfigManagerInterface;
+use Drupal\Core\Config\Schema\SchemaCheckTrait;
+use Drupal\Component\Utility\SafeMarkup;
+
+/**
+ * Provides a class for checking configuration schema.
+ */
+trait SchemaCheckTestTrait {
+
+  use SchemaCheckTrait;
+
+  /**
+   * Asserts the TypedConfigManager has a valid schema for the configuration.
+   *
+   * @param \Drupal\Core\Config\TypedConfigManagerInterface $typed_config
+   *   The TypedConfigManager.
+   * @param string $config_name
+   *   The configuration name.
+   * @param array $config_data
+   *   The configuration data.
+   */
+  public function assertConfigSchema(TypedConfigManagerInterface $typed_config, $config_name, $config_data) {
+    $errors = $this->checkConfigSchema($typed_config, $config_name, $config_data);
+    if ($errors === FALSE) {
+      // @todo Since the use of this trait is under TestBase, it works.
+      //   Can be fixed as part of https://www.drupal.org/node/2260053.
+      $this->fail(SafeMarkup::format('No schema for !config_name', array('!config_name' => $config_name)));
+      return;
+    }
+    elseif ($errors === TRUE) {
+      // @todo Since the use of this trait is under TestBase, it works.
+      //   Can be fixed as part of https://www.drupal.org/node/2260053.
+      $this->pass(SafeMarkup::format('Schema found for !config_name and values comply with schema.', array('!config_name' => $config_name)));
+    }
+    else {
+      foreach ($errors as $key => $error) {
+        // @todo Since the use of this trait is under TestBase, it works.
+        //   Can be fixed as part of https://www.drupal.org/node/2260053.
+        $this->fail(SafeMarkup::format('Schema key @key failed with: @error', array('@key' => $key, '@error' => $error)));
+      }
+    }
+  }
+
+  /**
+   * Asserts configuration, specified by name, has a valid schema.
+   *
+   * @param string $config_name
+   *   The configuration name.
+   */
+  public function assertConfigSchemaByName($config_name) {
+    $config = $this->config($config_name);
+    $this->assertConfigSchema(\Drupal::service('config.typed'), $config->getName(), $config->get());
+  }
+
+}