function _simpletest_autoload_psr4_psr0

Autoload callback to find PSR-4 and PSR-0 test classes.

Looks in the 'src/Tests' and in the 'lib/Drupal/mymodule/Tests' directory of modules for the class.

This will only work on classes where the namespace is of the pattern "Drupal\$extension\Tests\.."

File

modules/simpletest/simpletest.module, line 435

Code

function _simpletest_autoload_psr4_psr0($class) {
    // Static cache for extension paths.
    // This cache is lazily filled as soon as it is needed.
    static $extensions;
    // Check that the first namespace fragment is "Drupal\"
    if (substr($class, 0, 7) === 'Drupal\\') {
        // Find the position of the second namespace separator.
        $pos = strpos($class, '\\', 7);
        // Check that the third namespace fragment is "\Tests\".
        if (substr($class, $pos, 7) === '\\Tests\\') {
            // Extract the second namespace fragment, which we expect to be the
            // extension name.
            $extension = substr($class, 7, $pos - 7);
            // Lazy-load the extension paths, both enabled and disabled.
            if (!isset($extensions)) {
                $extensions = db_query("SELECT name, filename FROM {system}")->fetchAllKeyed();
            }
            // Check if the second namespace fragment is a known extension name.
            if (isset($extensions[$extension])) {
                // Split the class into namespace and classname.
                $nspos = strrpos($class, '\\');
                $namespace = substr($class, 0, $nspos);
                $classname = substr($class, $nspos + 1);
                // Try the PSR-4 location first, and the PSR-0 location as a fallback.
                // Build the PSR-4 filepath where we expect the class to be defined.
                $psr4_path = dirname($extensions[$extension]) . '/src/' . str_replace('\\', '/', substr($namespace, strlen('Drupal\\' . $extension . '\\'))) . '/' . str_replace('_', '/', $classname) . '.php';
                // Include the file, if it does exist.
                if (file_exists($psr4_path)) {
                    include $psr4_path;
                }
                else {
                    // Build the PSR-0 filepath where we expect the class to be defined.
                    $psr0_path = dirname($extensions[$extension]) . '/lib/' . str_replace('\\', '/', $namespace) . '/' . str_replace('_', '/', $classname) . '.php';
                    // Include the file, if it does exist.
                    if (file_exists($psr0_path)) {
                        include $psr0_path;
                    }
                }
            }
        }
    }
}