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<?php
/**
* TestLoader for CakePHP Test suite.
*
* Turns partial paths used on the testsuite console and web UI into full file paths.
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since CakePHP(tm) v 2.0
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
* @package Cake.TestSuite
*/
class CakeTestLoader extends PHPUnit_Runner_StandardTestSuiteLoader {

/**
* Load a file and find the first test case / suite in that file.
*
* @param string $filePath
* @param string $params
* @return ReflectionClass
*/
public function load($filePath, $params = '') {
$file = $this->_resolveTestFile($filePath, $params);
return parent::load('', $file);
}

/**
* Convert path fragments used by Cake's test runner to absolute paths that can be fed to PHPUnit.
*
* @return void
*/
protected function _resolveTestFile($filePath, $params) {
$basePath = $this->_basePath($params) . DS . $filePath;
$ending = 'Test.php';
return (strpos($basePath, $ending) === (strlen($basePath) - strlen($ending))) ? $basePath : $basePath . $ending;
}

/**
* Generates the base path to a set of tests based on the parameters.
*
* @param array $params
* @return string The base path.
*/
protected static function _basePath($params) {
$result = null;
if (!empty($params['core'])) {
$result = CORE_TEST_CASES;
} elseif (!empty($params['app'])) {
$result = APP_TEST_CASES;
} else if (!empty($params['plugin'])) {
if (!CakePlugin::loaded($params['plugin'])) {
try {
CakePlugin::load($params['plugin']);
$result = CakePlugin::path($params['plugin']) . 'Test' . DS . 'Case';
} catch (MissingPluginException $e) {}
} else {
$result = CakePlugin::path($params['plugin']) . 'Test' . DS . 'Case';
}
}
return $result;
}

/**
* Get the list of files for the test listing.
*
* @return void
*/
public static function generateTestList($params) {
$directory = self::_basePath($params);
$fileList = self::_getRecursiveFileList($directory);

$testCases = array();
foreach ($fileList as $testCaseFile) {
$case = str_replace($directory . DS, '', $testCaseFile);
$case = str_replace('Test.php', '', $case);
$testCases[$testCaseFile] = $case;
}
sort($testCases);
return $testCases;
}

/**
* Gets a recursive list of files from a given directory and matches then against
* a given fileTestFunction, like isTestCaseFile()
*
* @param string $directory The directory to scan for files.
* @param mixed $fileTestFunction
*/
protected static function _getRecursiveFileList($directory = '.') {
$fileList = array();
if (!is_dir($directory)) {
return $fileList;
}

$files = new RegexIterator(
new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory)),
'/.*Test.php$/'
);

foreach ($files as $file) {
$fileList[] = $file->getPathname();
}
return $fileList;
}

}
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