wadmiraal/drupal8_tdd_form_validation

diff --git a/core/lib/Drupal/Core/Database/Database.php b/core/lib/Drupal/Core/Database/Database.php
index dd19018828..f3abe2b24e 100644
--- a/core/lib/Drupal/Core/Database/Database.php
+++ b/core/lib/Drupal/Core/Database/Database.php
@@ -456,9 +456,15 @@ public static function ignoreTarget($key, $target) {
    */
   public static function convertDbUrlToConnectionInfo($url, $root) {
     $info = parse_url($url);
-    if (!isset($info['scheme'], $info['host'], $info['path'])) {
+    if (!isset($info['scheme'], $info['host'])) {
       throw new \InvalidArgumentException('Minimum requirement: driver://host/database');
     }
+    if ($info['scheme'] !== 'sqlite' && !isset($info['path'])) {
+      throw new \InvalidArgumentException('Minimum requirement: driver://host/database');
+    }
+    elseif ($info['scheme'] === 'sqlite') {
+      $info['path'] = $info['host'];
+    }
     $info += [
       'user' => '',
       'pass' => '',