From 5c9a3b3f39f6ff0d5c84c2cf283d27eaebe2e66e Mon Sep 17 00:00:00 2001
From: Chad Parry <github@chad.parry.org>
Date: Sat, 23 Apr 2011 21:19:47 -0600
Subject: Create a tempnam substitute that safely creates files with a given
 extension.

---
 modules/gallery/tests/Mock_Built_In.php      | 39 ++++++++++++++++++++++
 modules/gallery/tests/System_Helper_Test.php | 49 ++++++++++++++++++++++++++++
 2 files changed, 88 insertions(+)
 create mode 100644 modules/gallery/tests/Mock_Built_In.php
 create mode 100644 modules/gallery/tests/System_Helper_Test.php

(limited to 'modules/gallery/tests')

diff --git a/modules/gallery/tests/Mock_Built_In.php b/modules/gallery/tests/Mock_Built_In.php
new file mode 100644
index 00000000..b02e5ecf
--- /dev/null
+++ b/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;
+  }
+}
diff --git a/modules/gallery/tests/System_Helper_Test.php b/modules/gallery/tests/System_Helper_Test.php
new file mode 100644
index 00000000..734f98ac
--- /dev/null
+++ b/modules/gallery/tests/System_Helper_Test.php
@@ -0,0 +1,49 @@
+<?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.
+ */
+class System_Helper_Test extends Gallery_Unit_Test_Case {
+  public function tempnam_random_test() {
+    $filename = system::tempnam(TMPPATH, "file", ".ext");
+    $this->assert_true(file_exists($filename), "File not created");
+    unlink($filename);
+  }
+
+  public function tempnam_collision_test() {
+    require_once('Mock_Built_In.php');
+    $existing = TMPPATH . "/file1.ext";
+    $available = TMPPATH . "/file2.ext";
+    touch($existing);
+    $filename = system::_tempnam(TMPPATH, "file", ".ext",
+                                 array(new Mock_Built_In("1", "2"), "_tempnam"));
+    unlink($existing);
+    $this->assert_true(file_exists($filename), "File not created");
+    unlink($filename);
+    $this->assert_equal($available, $filename, "Incorrect filename created");
+  }
+
+  public function tempnam_abort_test() {
+    require_once('Mock_Built_In.php');
+    $filename = system::_tempnam(TMPPATH, "file", ".ext",
+                                 array(new Mock_Built_In(), "_tempnam"));
+    if ($filename) {
+      @unlink($filename);
+    }
+    $this->assert_false($filename, "Operation not aborted");
+  }
+}
-- 
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