Merge "Use Html:rawElement() where possible in special pages."

[lhc/web/wiklou.git] / includes / db / CloneDatabase.php

diff --git a/includes/db/CloneDatabase.php b/includes/db/CloneDatabase.php
index 20b08ed..5f09555 100644 (file)
--- a/includes/db/CloneDatabase.php
+++ b/includes/db/CloneDatabase.php
@@ -52,10 +52,13 @@ class CloneDatabase {
        public function __construct( IMaintainableDatabase $db, array $tablesToClone,
                $newTablePrefix, $oldTablePrefix = null, $dropCurrentTables = true
        ) {
+               if ( !$tablesToClone ) {
+                       throw new InvalidArgumentException( 'Empty list of tables to clone' );
+               }
                $this->db = $db;
                $this->tablesToClone = $tablesToClone;
                $this->newTablePrefix = $newTablePrefix;
-               $this->oldTablePrefix = $oldTablePrefix !== null ? $oldTablePrefix : $this->db->tablePrefix();
+               $this->oldTablePrefix = $oldTablePrefix ?? $this->db->tablePrefix();
                $this->dropCurrentTables = $dropCurrentTables;
        }