Club Drupal

<?php

/**

 * @file

 * This script runs Drupal tests from command line.

 */

define('SIMPLETEST_SCRIPT_COLOR_PASS', 32); // Green.

define('SIMPLETEST_SCRIPT_COLOR_FAIL', 31); // Red.

define('SIMPLETEST_SCRIPT_COLOR_EXCEPTION', 33); // Brown.

define('SIMPLETEST_SCRIPT_EXIT_SUCCESS', 0);

define('SIMPLETEST_SCRIPT_EXIT_FAILURE', 1);

define('SIMPLETEST_SCRIPT_EXIT_EXCEPTION', 2);

// Set defaults and get overrides.

list($args, $count) = simpletest_script_parse_args();

if ($args['help'] || $count == 0) {

  simpletest_script_help();

  exit(($count == 0) ? SIMPLETEST_SCRIPT_EXIT_FAILURE : SIMPLETEST_SCRIPT_EXIT_SUCCESS);

}

if ($args['execute-test']) {

  // Masquerade as Apache for running tests.

  simpletest_script_init("Apache");

  simpletest_script_run_one_test($args['test-id'], $args['execute-test']);

}

else {

  // Run administrative functions as CLI.

  simpletest_script_init(NULL);

}

// Bootstrap to perform initial validation or other operations.

drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);

if (!module_exists('simpletest')) {

  simpletest_script_print_error("The simpletest module must be enabled before this script can run.");

  exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

}

if ($args['clean']) {

  // Clean up left-over times and directories.

  simpletest_clean_environment();

  echo "\nEnvironment cleaned.\n";

  // Get the status messages and print them.

  $messages = array_pop(drupal_get_messages('status'));

  foreach ($messages as $text) {

    echo " - " . $text . "\n";

  }

  exit(SIMPLETEST_SCRIPT_EXIT_SUCCESS);

}

// Load SimpleTest files.

$groups = simpletest_test_get_all();

$all_tests = array();

foreach ($groups as $group => $tests) {

  $all_tests = array_merge($all_tests, array_keys($tests));

}

$test_list = array();

if ($args['list']) {

  // Display all available tests.

  echo "\nAvailable test groups & classes\n";

  echo   "-------------------------------\n\n";

  foreach ($groups as $group => $tests) {

    echo $group . "\n";

    foreach ($tests as $class => $info) {

      echo " - " . $info['name'] . ' (' . $class . ')' . "\n";

    }

  }

  exit(SIMPLETEST_SCRIPT_EXIT_SUCCESS);

}

$test_list = simpletest_script_get_test_list();

// Try to allocate unlimited time to run the tests.

drupal_set_time_limit(0);

simpletest_script_reporter_init();

// Setup database for test results.

$test_id = db_insert('simpletest_test_id')->useDefaults(array('test_id'))->execute();

// Execute tests.

$status = simpletest_script_execute_batch($test_id, simpletest_script_get_test_list());

// Retrieve the last database prefix used for testing and the last test class

// that was run from. Use the information to read the lgo file in case any

// fatal errors caused the test to crash.

list($last_prefix, $last_test_class) = simpletest_last_test_get($test_id);

simpletest_log_read($test_id, $last_prefix, $last_test_class);

// Stop the timer.

simpletest_script_reporter_timer_stop();

// Display results before database is cleared.

simpletest_script_reporter_display_results();

if ($args['xml']) {

  simpletest_script_reporter_write_xml_results();

}

// Cleanup our test results.

simpletest_clean_results_table($test_id);

// Test complete, exit.

exit($status);

/**

 * Print help text.

 */

function simpletest_script_help() {

  global $args;

  echo <<<EOF

Run Drupal tests from the shell.

Usage:        {$args['script']} [OPTIONS] <tests>

Example:      {$args['script']} Profile

All arguments are long options.

  --help      Print this page.

  --list      Display all available test groups.

  --clean     Cleans up database tables or directories from previous, failed,

              tests and then exits (no tests are run).

  --url       Immediately precedes a URL to set the host and path. You will

              need this parameter if Drupal is in a subdirectory on your

              localhost and you have not set \$base_url in settings.php. Tests

              can be run under SSL by including https:// in the URL.

  --php       The absolute path to the PHP executable. Usually not needed.

  --concurrency [num]

              Run tests in parallel, up to [num] tests at a time.

  --all       Run all available tests.

  --class     Run tests identified by specific class names, instead of group names.

  --file      Run tests identified by specific file names, instead of group names.

              Specify the path and the extension (i.e. 'modules/user/user.test').

  --directory Run all tests found within the specified file directory.

  --xml       <path>

              If provided, test results will be written as xml files to this path.

  --color     Output text format results with color highlighting.

  --verbose   Output detailed assertion messages in addition to summary.

  <test1>[,<test2>[,<test3> ...]]

              One or more tests to be run. By default, these are interpreted

              as the names of test groups as shown at

              ?q=admin/config/development/testing.

              These group names typically correspond to module names like "User"

              or "Profile" or "System", but there is also a group "XML-RPC".

              If --class is specified then these are interpreted as the names of

              specific test classes whose test methods will be run. Tests must

              be separated by commas. Ignored if --all is specified.

To run this script you will normally invoke it from the root directory of your

Drupal installation as the webserver user (differs per configuration), or root:

sudo -u [wwwrun|www-data|etc] php ./scripts/{$args['script']}

  --url http://example.com/ --all

sudo -u [wwwrun|www-data|etc] php ./scripts/{$args['script']}

  --url http://example.com/ --class BlockTestCase

\n

EOF;

}

/**

 * Parse execution argument and ensure that all are valid.

 *

 * @return The list of arguments.

 */

function simpletest_script_parse_args() {

  // Set default values.

  $args = array(

    'script' => '',

    'help' => FALSE,

    'list' => FALSE,

    'clean' => FALSE,

    'url' => '',

    'php' => '',

    'concurrency' => 1,

    'all' => FALSE,

    'class' => FALSE,

    'file' => FALSE,

    'directory' => '',

    'color' => FALSE,

    'verbose' => FALSE,

    'test_names' => array(),

    // Used internally.

    'test-id' => 0,

    'execute-test' => '',

    'xml' => '',

  );

  // Override with set values.

  $args['script'] = basename(array_shift($_SERVER['argv']));

  $count = 0;

  while ($arg = array_shift($_SERVER['argv'])) {

    if (preg_match('/--(\S+)/', $arg, $matches)) {

      // Argument found.

      if (array_key_exists($matches[1], $args)) {

        // Argument found in list.

        $previous_arg = $matches[1];

        if (is_bool($args[$previous_arg])) {

          $args[$matches[1]] = TRUE;

        }

        else {

          $args[$matches[1]] = array_shift($_SERVER['argv']);

        }

        // Clear extraneous values.

        $args['test_names'] = array();

        $count++;

      }

      else {

        // Argument not found in list.

        simpletest_script_print_error("Unknown argument '$arg'.");

        exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

      }

    }

    else {

      // Values found without an argument should be test names.

      $args['test_names'] += explode(',', $arg);

      $count++;

    }

  }

  // Validate the concurrency argument

  if (!is_numeric($args['concurrency']) || $args['concurrency'] <= 0) {

    simpletest_script_print_error("--concurrency must be a strictly positive integer.");

    exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

  }

  return array($args, $count);

}

/**

 * Initialize script variables and perform general setup requirements.

 */

function simpletest_script_init($server_software) {

  global $args, $php;

  $host = 'localhost';

  $path = '';

  // Determine location of php command automatically, unless a command line argument is supplied.

  if (!empty($args['php'])) {

    $php = $args['php'];

  }

  elseif ($php_env = getenv('_')) {

    // '_' is an environment variable set by the shell. It contains the command that was executed.

    $php = $php_env;

  }

  elseif (defined('PHP_BINARY') && $php_env = PHP_BINARY) {

    // 'PHP_BINARY' specifies the PHP binary path during script execution. Available since PHP 5.4.

    $php = $php_env;

  }

  elseif ($sudo = getenv('SUDO_COMMAND')) {

    // 'SUDO_COMMAND' is an environment variable set by the sudo program.

    // Extract only the PHP interpreter, not the rest of the command.

    list($php, ) = explode(' ', $sudo, 2);

  }

  else {

    simpletest_script_print_error('Unable to automatically determine the path to the PHP interpreter. Supply the --php command line argument.');

    simpletest_script_help();

    exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

  }

  // Get URL from arguments.

  if (!empty($args['url'])) {

    $parsed_url = parse_url($args['url']);

    $host = $parsed_url['host'] . (isset($parsed_url['port']) ? ':' . $parsed_url['port'] : '');

    $path = isset($parsed_url['path']) ? $parsed_url['path'] : '';

    // If the passed URL schema is 'https' then setup the $_SERVER variables

    // properly so that testing will run under HTTPS.

    if ($parsed_url['scheme'] == 'https') {

      $_SERVER['HTTPS'] = 'on';

    }

  }

  $_SERVER['HTTP_HOST'] = $host;

  $_SERVER['REMOTE_ADDR'] = '127.0.0.1';

  $_SERVER['SERVER_ADDR'] = '127.0.0.1';

  $_SERVER['SERVER_SOFTWARE'] = $server_software;

  $_SERVER['SERVER_NAME'] = 'localhost';

  $_SERVER['REQUEST_URI'] = $path .'/';

  $_SERVER['REQUEST_METHOD'] = 'GET';

  $_SERVER['SCRIPT_NAME'] = $path .'/index.php';

  $_SERVER['PHP_SELF'] = $path .'/index.php';

  $_SERVER['HTTP_USER_AGENT'] = 'Drupal command line';

  if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {

    // Ensure that any and all environment variables are changed to https://.

    foreach ($_SERVER as $key => $value) {

      $_SERVER[$key] = str_replace('http://', 'https://', $_SERVER[$key]);

    }

  }

  chdir(realpath(dirname(__FILE__) . '/..'));

  define('DRUPAL_ROOT', getcwd());

  require_once DRUPAL_ROOT . '/includes/bootstrap.inc';

}

/**

 * Execute a batch of tests.

 */

function simpletest_script_execute_batch($test_id, $test_classes) {

  global $args;

  $total_status = SIMPLETEST_SCRIPT_EXIT_SUCCESS;

  // Multi-process execution.

  $children = array();

  while (!empty($test_classes) || !empty($children)) {

    while (count($children) < $args['concurrency']) {

      if (empty($test_classes)) {

        break;

      }

      // Fork a child process.

      $test_class = array_shift($test_classes);

      $command = simpletest_script_command($test_id, $test_class);

      $process = proc_open($command, array(), $pipes, NULL, NULL, array('bypass_shell' => TRUE));

      if (!is_resource($process)) {

        echo "Unable to fork test process. Aborting.\n";

        exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

      }

      // Register our new child.

      $children[] = array(

        'process' => $process,

        'class' => $test_class,

        'pipes' => $pipes,

      );

    }

    // Wait for children every 200ms.

    usleep(200000);

    // Check if some children finished.

    foreach ($children as $cid => $child) {

      $status = proc_get_status($child['process']);

      if (empty($status['running'])) {

        // The child exited, unregister it.

        proc_close($child['process']);

        if ($status['exitcode'] == SIMPLETEST_SCRIPT_EXIT_FAILURE) {

          if ($status['exitcode'] > $total_status) {

            $total_status = $status['exitcode'];

          }

        }

        elseif ($status['exitcode']) {

          $total_status = $status['exitcode'];

          echo 'FATAL ' . $test_class . ': test runner returned a non-zero error code (' . $status['exitcode'] . ').' . "\n";

        }

        // Remove this child.

        unset($children[$cid]);

      }

    }

  }

  return $total_status;

}

/**

 * Bootstrap Drupal and run a single test.

 */

function simpletest_script_run_one_test($test_id, $test_class) {

  try {

    // Bootstrap Drupal.

    drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);

    simpletest_classloader_register();

    $test = new $test_class($test_id);

    $test->run();

    $info = $test->getInfo();

    $had_fails = (isset($test->results['#fail']) && $test->results['#fail'] > 0);

    $had_exceptions = (isset($test->results['#exception']) && $test->results['#exception'] > 0);

    $status = ($had_fails || $had_exceptions ? 'fail' : 'pass');

    simpletest_script_print($info['name'] . ' ' . _simpletest_format_summary_line($test->results) . "\n", simpletest_script_color_code($status));

    // Finished, kill this runner.

    if ($had_fails || $had_exceptions) {

      exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

    }

    exit(SIMPLETEST_SCRIPT_EXIT_SUCCESS);

  }

  catch (Exception $e) {

    echo (string) $e;

    exit(SIMPLETEST_SCRIPT_EXIT_EXCEPTION);

  }

}

/**

 * Return a command used to run a test in a separate process.

 *

 * @param $test_id

 *  The current test ID.

 * @param $test_class

 *  The name of the test class to run.

 */

function simpletest_script_command($test_id, $test_class) {

  global $args, $php;

  $command = escapeshellarg($php) . ' ' . escapeshellarg('./scripts/' . $args['script']) . ' --url ' . escapeshellarg($args['url']);

  if ($args['color']) {

    $command .= ' --color';

  }

  $command .= " --php " . escapeshellarg($php) . " --test-id $test_id --execute-test " . escapeshellarg($test_class);

  return $command;

}

/**

 * Get list of tests based on arguments. If --all specified then

 * returns all available tests, otherwise reads list of tests.

 *

 * Will print error and exit if no valid tests were found.

 *

 * @return List of tests.

 */

function simpletest_script_get_test_list() {

  global $args, $all_tests, $groups;

  $test_list = array();

  if ($args['all']) {

    $test_list = $all_tests;

  }

  else {

    if ($args['class']) {

      // Check for valid class names.

      $test_list = array();

      foreach ($args['test_names'] as $test_class) {

        if (class_exists($test_class)) {

          $test_list[] = $test_class;

        }

        else {

          $groups = simpletest_test_get_all();

          $all_classes = array();

          foreach ($groups as $group) {

            $all_classes = array_merge($all_classes, array_keys($group));

          }

          simpletest_script_print_error('Test class not found: ' . $test_class);

          simpletest_script_print_alternatives($test_class, $all_classes, 6);

          exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

        }

      }

    }

    elseif ($args['file']) {

      $files = array();

      foreach ($args['test_names'] as $file) {

        $files[drupal_realpath($file)] = 1;

      }

      // Check for valid class names.

      foreach ($all_tests as $class_name) {

        $refclass = new ReflectionClass($class_name);

        $file = $refclass->getFileName();

        if (isset($files[$file])) {

          $test_list[] = $class_name;

        }

      }

    }

    elseif ($args['directory']) {

      // Extract test case class names from specified directory.

      // Find all tests in the PSR-X structure; Drupal\$extension\Tests\*.php

      // Since we do not want to hard-code too many structural file/directory

      // assumptions about PSR-0/4 files and directories, we check for the

      // minimal conditions only; i.e., a '*.php' file that has '/Tests/' in

      // its path.

      // Ignore anything from third party vendors, and ignore template files used in tests.

      // And any api.php files.

      $ignore = array('nomask' => '/vendor|\.tpl\.php|\.api\.php/');

      $files = array();

      if ($args['directory'][0] === '/') {

        $directory = $args['directory'];

      }

      else {

        $directory = DRUPAL_ROOT . "/" . $args['directory'];

      }

      $file_list = file_scan_directory($directory, '/\.php|\.test$/', $ignore);

      foreach ($file_list as $file) {

        // '/Tests/' can be contained anywhere in the file's path (there can be

        // sub-directories below /Tests), but must be contained literally.

        // Case-insensitive to match all Simpletest and PHPUnit tests:

        //   ./lib/Drupal/foo/Tests/Bar/Baz.php

        //   ./foo/src/Tests/Bar/Baz.php

        //   ./foo/tests/Drupal/foo/Tests/FooTest.php

        //   ./foo/tests/src/FooTest.php

        // $file->filename doesn't give us a directory, so we use $file->uri

        // Strip the drupal root directory and trailing slash off the URI

        $filename = substr($file->uri, strlen(DRUPAL_ROOT)+1);

        if (stripos($filename, '/Tests/')) {

          $files[drupal_realpath($filename)] = 1;

        } else if (stripos($filename, '.test')){

          $files[drupal_realpath($filename)] = 1;

        }

      }

      // Check for valid class names.

      foreach ($all_tests as $class_name) {

        $refclass = new ReflectionClass($class_name);

        $classfile = $refclass->getFileName();

        if (isset($files[$classfile])) {

          $test_list[] = $class_name;

        }

      }

    }

    else {

      // Check for valid group names and get all valid classes in group.

      foreach ($args['test_names'] as $group_name) {

        if (isset($groups[$group_name])) {

          $test_list = array_merge($test_list, array_keys($groups[$group_name]));

        }

        else {

          simpletest_script_print_error('Test group not found: ' . $group_name);

          simpletest_script_print_alternatives($group_name, array_keys($groups));

          exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

        }

      }

    }

  }

  if (empty($test_list)) {

    simpletest_script_print_error('No valid tests were specified.');

    exit(SIMPLETEST_SCRIPT_EXIT_FAILURE);

  }

  return $test_list;

}

/**

 * Initialize the reporter.

 */

function simpletest_script_reporter_init() {

  global $args, $all_tests, $test_list, $results_map;

  $results_map = array(

    'pass' => 'Pass',

    'fail' => 'Fail',

    'exception' => 'Exception'

  );

  echo "\n";

  echo "Drupal test run\n";

  echo "---------------\n";

  echo "\n";

  // Tell the user about what tests are to be run.

  if ($args['all']) {

    echo "All tests will run.\n\n";

  }

  else {

    echo "Tests to be run:\n";

    foreach ($test_list as $class_name) {

      $info = call_user_func(array($class_name, 'getInfo'));

      echo " - " . $info['name'] . ' (' . $class_name . ')' . "\n";

    }

    echo "\n";

  }

  echo "Test run started:\n";

  echo " " . format_date($_SERVER['REQUEST_TIME'], 'long') . "\n";

  timer_start('run-tests');

  echo "\n";

  echo "Test summary\n";

  echo "------------\n";

  echo "\n";

}

/**

 * Display jUnit XML test results.

 */

function simpletest_script_reporter_write_xml_results() {

  global $args, $test_id, $results_map;

  $results = db_query("SELECT * FROM {simpletest} WHERE test_id = :test_id ORDER BY test_class, message_id", array(':test_id' => $test_id));

  $test_class = '';

  $xml_files = array();

  foreach ($results as $result) {

    if (isset($results_map[$result->status])) {

      if ($result->test_class != $test_class) {

        // We've moved onto a new class, so write the last classes results to a file:

        if (isset($xml_files[$test_class])) {

          file_put_contents($args['xml'] . '/' . $test_class . '.xml', $xml_files[$test_class]['doc']->saveXML());

          unset($xml_files[$test_class]);

        }

        $test_class = $result->test_class;

        if (!isset($xml_files[$test_class])) {

          $doc = new DomDocument('1.0');

          $root = $doc->createElement('testsuite');

          $root = $doc->appendChild($root);

          $xml_files[$test_class] = array('doc' => $doc, 'suite' => $root);

        }

      }

      // For convenience:

      $dom_document = &$xml_files[$test_class]['doc'];

      // Create the XML element for this test case:

      $case = $dom_document->createElement('testcase');

      $case->setAttribute('classname', $test_class);

      list($class, $name) = explode('->', $result->function, 2);

      $case->setAttribute('name', $name);

      // Passes get no further attention, but failures and exceptions get to add more detail:

      if ($result->status == 'fail') {

        $fail = $dom_document->createElement('failure');

        $fail->setAttribute('type', 'failure');

        $fail->setAttribute('message', $result->message_group);

        $text = $dom_document->createTextNode($result->message);

        $fail->appendChild($text);

        $case->appendChild($fail);

      }

      elseif ($result->status == 'exception') {

        // In the case of an exception the $result->function may not be a class

        // method so we record the full function name:

        $case->setAttribute('name', $result->function);

        $fail = $dom_document->createElement('error');

        $fail->setAttribute('type', 'exception');

        $fail->setAttribute('message', $result->message_group);

        $full_message = $result->message . "\n\nline: " . $result->line . "\nfile: " . $result->file;

        $text = $dom_document->createTextNode($full_message);

        $fail->appendChild($text);

        $case->appendChild($fail);

      }

      // Append the test case XML to the test suite:

      $xml_files[$test_class]['suite']->appendChild($case);

    }

  }

  // The last test case hasn't been saved to a file yet, so do that now:

  if (isset($xml_files[$test_class])) {

    file_put_contents($args['xml'] . '/' . $test_class . '.xml', $xml_files[$test_class]['doc']->saveXML());

    unset($xml_files[$test_class]);

  }

}

/**

 * Stop the test timer.

 */

function simpletest_script_reporter_timer_stop() {

  echo "\n";

  $end = timer_stop('run-tests');

  echo "Test run duration: " . format_interval($end['time'] / 1000);

  echo "\n\n";

}

/**

 * Display test results.

 */

function simpletest_script_reporter_display_results() {

  global $args, $test_id, $results_map;

  if ($args['verbose']) {

    // Report results.

    echo "Detailed test results\n";

    echo "---------------------\n";

    $results = db_query("SELECT * FROM {simpletest} WHERE test_id = :test_id ORDER BY test_class, message_id", array(':test_id' => $test_id));

    $test_class = '';

    foreach ($results as $result) {

      if (isset($results_map[$result->status])) {

        if ($result->test_class != $test_class) {

          // Display test class every time results are for new test class.

          echo "\n\n---- $result->test_class ----\n\n\n";

          $test_class = $result->test_class;

          // Print table header.

          echo "Status    Group      Filename          Line Function                            \n";

          echo "--------------------------------------------------------------------------------\n";

        }

        simpletest_script_format_result($result);

      }

    }

  }

}

/**

 * Format the result so that it fits within the default 80 character

 * terminal size.

 *

 * @param $result The result object to format.

 */

function simpletest_script_format_result($result) {

  global $results_map, $color;

  $summary = sprintf("%-9.9s %-10.10s %-17.17s %4.4s %-35.35s\n",

    $results_map[$result->status], $result->message_group, basename($result->file), $result->line, $result->function);

  simpletest_script_print($summary, simpletest_script_color_code($result->status));

  $lines = explode("\n", wordwrap(trim(strip_tags($result->message)), 76));

  foreach ($lines as $line) {

    echo "    $line\n";

  }

}

/**

 * Print error message prefixed with "  ERROR: " and displayed in fail color

 * if color output is enabled.

 *

 * @param $message The message to print.

 */

function simpletest_script_print_error($message) {

  simpletest_script_print("  ERROR: $message\n", SIMPLETEST_SCRIPT_COLOR_FAIL);

}

/**

 * Print a message to the console, if color is enabled then the specified

 * color code will be used.

 *

 * @param $message The message to print.

 * @param $color_code The color code to use for coloring.

 */

function simpletest_script_print($message, $color_code) {

  global $args;

  if (!empty($args['color'])) {

    echo "\033[" . $color_code . "m" . $message . "\033[0m";

  }

  else {

    echo $message;

  }

}

/**

 * Get the color code associated with the specified status.

 *

 * @param $status The status string to get code for.

 * @return Color code.

 */

function simpletest_script_color_code($status) {

  switch ($status) {

    case 'pass':

      return SIMPLETEST_SCRIPT_COLOR_PASS;

    case 'fail':

      return SIMPLETEST_SCRIPT_COLOR_FAIL;

    case 'exception':

      return SIMPLETEST_SCRIPT_COLOR_EXCEPTION;

  }

  return 0; // Default formatting.

}

/**

 * Prints alternative test names.

 *

 * Searches the provided array of string values for close matches based on the

 * Levenshtein algorithm.

 *

 * @see http://php.net/manual/en/function.levenshtein.php

 *

 * @param string $string

 *   A string to test.

 * @param array $array

 *   A list of strings to search.

 * @param int $degree

 *   The matching strictness. Higher values return fewer matches. A value of

 *   4 means that the function will return strings from $array if the candidate

 *   string in $array would be identical to $string by changing 1/4 or fewer of

 *   its characters.

 */

function simpletest_script_print_alternatives($string, $array, $degree = 4) {

  $alternatives = array();

  foreach ($array as $item) {

    $lev = levenshtein($string, $item);

    if ($lev <= strlen($item) / $degree || FALSE !== strpos($string, $item)) {

      $alternatives[] = $item;

    }

  }

  if (!empty($alternatives)) {

    simpletest_script_print("  Did you mean?\n", SIMPLETEST_SCRIPT_COLOR_FAIL);

    foreach ($alternatives as $alternative) {

      simpletest_script_print("  - $alternative\n", SIMPLETEST_SCRIPT_COLOR_FAIL);

    }

  }

}