Create a tempnam substitute that safely creates files with a given extension.

modules/gallery/tests/Mock_Built_In.php

@@ -0,0 +1,39 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2011 Chad Parry
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+/**
+ * Deterministic replacement for the built-in tempnam function.
+ * This is useful in unit tests where a dependency on tempnam needs to be mocked.
+ */
+class Mock_Built_In {
+  private $nonces;
+
+  function __construct() {
+    $this->nonces = func_get_args();
+  }
+
+  function _tempnam($dir, $prefix) {
+    if (empty($this->nonces))
+      return false;
+    $filename = "$dir/$prefix" . array_shift($this->nonces);
+    if (!touch($filename))
+      return false;
+    return $filename;
+  }
+}