first step in unit testing the installer - tests the download PREG function

pear/tests/pear_installer1.phpt

@@ -0,0 +1,61 @@
+--TEST--
+PEAR_Installer test #1
+--SKIPIF--
+skip
+--FILE--
+<?php
+
+require_once "PEAR/Installer.php";
+
+// no UI is needed for these tests
+$ui = false;
+$installer = new PEAR_Installer($ui);
+$temp_path = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'testinstallertemp';
+if (!is_dir($temp_path)) {
+    mkdir($temp_path);
+}
+// make the fake configuration
+$config = serialize(array('master_server' => 'pear.php.net', 'php_dir' => $temp_path));
+touch($temp_path . DIRECTORY_SEPARATOR . 'user.conf');
+$fp = fopen($temp_path . DIRECTORY_SEPARATOR . 'user.conf', 'w');
+fwrite($fp, $config);
+fclose($fp);
+echo "test extractDownloadFileName:\n";
+echo 'existing file: ';
+echo $installer->extractDownloadFileName($temp_path . DIRECTORY_SEPARATOR . 'user.conf',
+    $ui);
+var_dump($ui);
+echo 'invalid match: ';
+echo $installer->extractDownloadFileName('27',
+    $ui);
+echo "\n";
+var_dump($ui);
+echo 'valid match, no version: ';
+echo $installer->extractDownloadFileName('Testpackage', $ui);
+echo "\n";
+var_dump($ui);
+echo 'invalid match, has invalid version: ';
+echo $installer->extractDownloadFileName('Testpackage-##', $ui);
+echo "\n";
+var_dump($ui);
+echo 'valid match, has version: ';
+echo $installer->extractDownloadFileName('Testpackage-1.2', $ui);
+echo "\n";
+var_dump($ui);
+// '/^([A-Z][a-zA-Z0-9_]+|[a-z][a-z0-9_]+)(-([.0-9a-zA-Z]+))?$/'
+unlink ($temp_path . DIRECTORY_SEPARATOR . 'user.conf');
+rmdir($temp_path);
+?>
+--GET--
+--POST--
+--EXPECT--
+test extractDownloadFileName:
+existing file: c:\web pages\chiara\testinstallertemp\user.confbool(false)
+invalid match: 27
+NULL
+valid match, no version: Testpackage
+NULL
+invalid match, has invalid version: Testpackage-##
+NULL
+valid match, has version: Testpackage
+string(3) "1.2"