Update core 8.3.0

web/core/tests/Drupal/KernelTests/FileSystemModuleDiscoveryDataProviderTrait.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Drupal\KernelTests;
+
+/**
+ * A trait used in testing for providing a list of modules in a dataProvider.
+ */
+trait FileSystemModuleDiscoveryDataProviderTrait {
+
+  /**
+   * A data provider that lists every module in core.
+   *
+   * @return array
+   *   An array of module names to test.
+   */
+  public function coreModuleListDataProvider() {
+    $module_dirs = array_keys(iterator_to_array(new \FilesystemIterator(__DIR__ . '/../../../modules/')));
+    $module_names = array_map(function($path) {
+      return str_replace(__DIR__ . '/../../../modules/', '', $path);
+    }, $module_dirs);
+    $modules_keyed = array_combine($module_names, $module_names);
+
+    $data = array_map(function ($module) {
+      return [$module];
+    }, $modules_keyed);
+
+    return $data;
+  }
+
+}