abstract class DrupalTestCase in SimpleTest 7

Base class for Drupal tests.

Do not extend this class, use one of the subclasses in this file.

Hierarchy

• class \DrupalTestCase

File

./drupal_web_test_case.php, line 8

abstract class DrupalTestCase {

  /**
   * The test run ID.
   *
   * @var string
   */
  protected $testId;

  /**
   * The original database prefix, before it was changed for testing purposes.
   *
   * @var string
   */
  protected $originalPrefix = NULL;

  /**
   * The original file directory, before it was changed for testing purposes.
   *
   * @var string
   */
  protected $originalFileDirectory = NULL;

  /**
   * Time limit for the test.
   */
  protected $timeLimit = 500;

  /**
   * Current results of this test case.
   *
   * @var Array
   */
  public $results = array(
    '#pass' => 0,
    '#fail' => 0,
    '#exception' => 0,
    '#debug' => 0,
  );

  /**
   * Assertions thrown in that test case.
   *
   * @var Array
   */
  protected $assertions = array();

  /**
   * This class is skipped when looking for the source of an assertion.
   *
   * When displaying which function an assert comes from, it's not too useful
   * to see "drupalWebTestCase->drupalLogin()', we would like to see the test
   * that called it. So we need to skip the classes defining these helper
   * methods.
   */
  protected $skipClasses = array(
    __CLASS__ => TRUE,
  );

  /**
   * Constructor for DrupalWebTestCase.
   *
   * @param $test_id
   *   Tests with the same id are reported together.
   */
  public function __construct($test_id = NULL) {
    $this->testId = $test_id;
  }

  /**
   * Internal helper: stores the assert.
   *
   * @param $status
   *   Can be 'pass', 'fail', 'exception'.
   *   TRUE is a synonym for 'pass', FALSE for 'fail'.
   * @param $message
   *   The message string.
   * @param $group
   *   Which group this assert belongs to.
   * @param $caller
   *   By default, the assert comes from a function whose name starts with
   *   'test'. Instead, you can specify where this assert originates from
   *   by passing in an associative array as $caller. Key 'file' is
   *   the name of the source file, 'line' is the line number and 'function'
   *   is the caller function itself.
   */
  protected function assert($status, $message = '', $group = 'Other', array $caller = NULL) {
    global $db_prefix;

    // Convert boolean status to string status.
    if (is_bool($status)) {
      $status = $status ? 'pass' : 'fail';
    }

    // Increment summary result counter.
    $this->results['#' . $status]++;

    // Get the function information about the call to the assertion method.
    if (!$caller) {
      $caller = $this
        ->getAssertionCall();
    }

    // Switch to non-testing database to store results in.
    $current_db_prefix = $db_prefix;
    $db_prefix = $this->originalPrefix;

    // Creation assertion array that can be displayed while tests are running.
    $this->assertions[] = $assertion = array(
      'test_id' => $this->testId,
      'test_class' => get_class($this),
      'status' => $status,
      'message' => $message,
      'message_group' => $group,
      'function' => $caller['function'],
      'line' => $caller['line'],
      'file' => $caller['file'],
    );

    // Store assertion for display after the test has completed.
    db_insert('simpletest')
      ->fields($assertion)
      ->execute();

    // Return to testing prefix.
    $db_prefix = $current_db_prefix;

    // We do not use a ternary operator here to allow a breakpoint on
    // test failure.
    if ($status == 'pass') {
      return TRUE;
    }
    else {
      return FALSE;
    }
  }

  /**
   * Store an assertion from outside the testing context.
   *
   * This is useful for inserting assertions that can only be recorded after
   * the test case has been destroyed, such as PHP fatal errors. The caller
   * information is not automatically gathered since the caller is most likely
   * inserting the assertion on behalf of other code. In all other respects
   * the method behaves just like DrupalTestCase::assert() in terms of storing
   * the assertion.
   *
   * @see DrupalTestCase::assert()
   */
  public static function insertAssert($test_id, $test_class, $status, $message = '', $group = 'Other', array $caller = array()) {

    // Convert boolean status to string status.
    if (is_bool($status)) {
      $status = $status ? 'pass' : 'fail';
    }
    $caller += array(
      'function' => t('Unknown'),
      'line' => 0,
      'file' => t('Unknown'),
    );
    $assertion = array(
      'test_id' => $test_id,
      'test_class' => $test_class,
      'status' => $status,
      'message' => $message,
      'message_group' => $group,
      'function' => $caller['function'],
      'line' => $caller['line'],
      'file' => $caller['file'],
    );
    db_insert('simpletest')
      ->fields($assertion)
      ->execute();
  }

  /**
   * Cycles through backtrace until the first non-assertion method is found.
   *
   * @return
   *   Array representing the true caller.
   */
  protected function getAssertionCall() {
    $backtrace = debug_backtrace();

    // The first element is the call. The second element is the caller.
    // We skip calls that occurred in one of the methods of our base classes
    // or in an assertion function.
    while (($caller = $backtrace[1]) && (isset($caller['class']) && isset($this->skipClasses[$caller['class']]) || substr($caller['function'], 0, 6) == 'assert')) {

      // We remove that call.
      array_shift($backtrace);
    }
    return _drupal_get_last_caller($backtrace);
  }

  /**
   * Check to see if a value is not false (not an empty string, 0, NULL, or FALSE).
   *
   * @param $value
   *   The value on which the assertion is to be done.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertTrue($value, $message = '', $group = 'Other') {
    return $this
      ->assert((bool) $value, $message ? $message : t('Value is TRUE'), $group);
  }

  /**
   * Check to see if a value is false (an empty string, 0, NULL, or FALSE).
   *
   * @param $value
   *   The value on which the assertion is to be done.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertFalse($value, $message = '', $group = 'Other') {
    return $this
      ->assert(!$value, $message ? $message : t('Value is FALSE'), $group);
  }

  /**
   * Check to see if a value is NULL.
   *
   * @param $value
   *   The value on which the assertion is to be done.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertNull($value, $message = '', $group = 'Other') {
    return $this
      ->assert(!isset($value), $message ? $message : t('Value is NULL'), $group);
  }

  /**
   * Check to see if a value is not NULL.
   *
   * @param $value
   *   The value on which the assertion is to be done.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertNotNull($value, $message = '', $group = 'Other') {
    return $this
      ->assert(isset($value), $message ? $message : t('Value is not NULL'), $group);
  }

  /**
   * Check to see if two values are equal.
   *
   * @param $first
   *   The first value to check.
   * @param $second
   *   The second value to check.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertEqual($first, $second, $message = '', $group = 'Other') {
    return $this
      ->assert($first == $second, $message ? $message : t('First value is equal to second value'), $group);
  }

  /**
   * Check to see if two values are not equal.
   *
   * @param $first
   *   The first value to check.
   * @param $second
   *   The second value to check.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertNotEqual($first, $second, $message = '', $group = 'Other') {
    return $this
      ->assert($first != $second, $message ? $message : t('First value is not equal to second value'), $group);
  }

  /**
   * Check to see if two values are identical.
   *
   * @param $first
   *   The first value to check.
   * @param $second
   *   The second value to check.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertIdentical($first, $second, $message = '', $group = 'Other') {
    return $this
      ->assert($first === $second, $message ? $message : t('First value is identical to second value'), $group);
  }

  /**
   * Check to see if two values are not identical.
   *
   * @param $first
   *   The first value to check.
   * @param $second
   *   The second value to check.
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE if the assertion succeeded, FALSE otherwise.
   */
  protected function assertNotIdentical($first, $second, $message = '', $group = 'Other') {
    return $this
      ->assert($first !== $second, $message ? $message : t('First value is not identical to second value'), $group);
  }

  /**
   * Fire an assertion that is always positive.
   *
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   TRUE.
   */
  protected function pass($message = NULL, $group = 'Other') {
    return $this
      ->assert(TRUE, $message, $group);
  }

  /**
   * Fire an assertion that is always negative.
   *
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @return
   *   FALSE.
   */
  protected function fail($message = NULL, $group = 'Other') {
    return $this
      ->assert(FALSE, $message, $group);
  }

  /**
   * Fire an error assertion.
   *
   * @param $message
   *   The message to display along with the assertion.
   * @param $group
   *   The type of assertion - examples are "Browser", "PHP".
   * @param $caller
   *   The caller of the error.
   * @return
   *   FALSE.
   */
  protected function error($message = '', $group = 'Other', array $caller = NULL) {
    if ($group == 'User notice') {

      // Since 'User notice' is set by trigger_error() which is used for debug
      // set the message to a status of 'debug'.
      return $this
        ->assert('debug', $message, 'Debug', $caller);
    }
    return $this
      ->assert('exception', $message, $group, $caller);
  }

  /**
   * Run all tests in this class.
   */
  public function run() {

    // Initialize verbose debugging.
    simpletest_verbose(NULL, file_directory_path(), get_class($this));

    // HTTP auth settings (<username>:<password>) for the simpletest browser
    // when sending requests to the test site.
    $username = variable_get('simpletest_username', NULL);
    $password = variable_get('simpletest_password', NULL);
    if ($username && $password) {
      $this->httpauth_credentials = $username . ':' . $password;
    }
    set_error_handler(array(
      $this,
      'errorHandler',
    ));
    $methods = array();

    // Iterate through all the methods in this class.
    foreach (get_class_methods(get_class($this)) as $method) {

      // If the current method starts with "test", run it - it's a test.
      if (strtolower(substr($method, 0, 4)) == 'test') {
        $this
          ->setUp();
        try {
          $this
            ->{$method}();

          // Finish up.
        } catch (Exception $e) {
          $this
            ->exceptionHandler($e);
        }
        $this
          ->tearDown();
      }
    }

    // Clear out the error messages and restore error handler.
    drupal_get_messages();
    restore_error_handler();
  }

  /**
   * Handle errors.
   *
   * Because this is registered in set_error_handler(), it has to be public.
   * @see set_error_handler
   *
   */
  public function errorHandler($severity, $message, $file = NULL, $line = NULL) {
    if ($severity & error_reporting()) {
      $error_map = array(
        E_STRICT => 'Run-time notice',
        E_WARNING => 'Warning',
        E_NOTICE => 'Notice',
        E_CORE_ERROR => 'Core error',
        E_CORE_WARNING => 'Core warning',
        E_USER_ERROR => 'User error',
        E_USER_WARNING => 'User warning',
        E_USER_NOTICE => 'User notice',
        E_RECOVERABLE_ERROR => 'Recoverable error',
      );
      $backtrace = debug_backtrace();
      $this
        ->error($message, $error_map[$severity], _drupal_get_last_caller($backtrace));
    }
    return TRUE;
  }

  /**
   * Handle exceptions.
   *
   * @see set_exception_handler
   */
  protected function exceptionHandler($exception) {
    $backtrace = $exception
      ->getTrace();

    // Push on top of the backtrace the call that generated the exception.
    array_unshift($backtrace, array(
      'line' => $exception
        ->getLine(),
      'file' => $exception
        ->getFile(),
    ));
    $this
      ->error($exception
      ->getMessage(), 'Uncaught exception', _drupal_get_last_caller($backtrace));
  }

  /**
   * Generates a random string of ASCII characters of codes 32 to 126.
   *
   * The generated string includes alpha-numeric characters and common misc
   * characters. Use this method when testing general input where the content
   * is not restricted.
   *
   * @param $length
   *   Length of random string to generate which will be appended to $db_prefix.
   * @return
   *   Randomly generated string.
   */
  public static function randomString($length = 8) {
    global $db_prefix;
    $str = '';
    for ($i = 0; $i < $length; $i++) {
      $str .= chr(mt_rand(32, 126));
    }
    return str_replace('simpletest', 's', $db_prefix) . $str;
  }

  /**
   * Generates a random string containing letters and numbers.
   *
   * The letters may be upper or lower case. This method is better for
   * restricted inputs that do not accept certain characters. For example,
   * when testing input fields that require machine readable values (ie without
   * spaces and non-standard characters) this method is best.
   *
   * @param $length
   *   Length of random string to generate which will be appended to $db_prefix.
   * @return
   *   Randomly generated string.
   */
  public static function randomName($length = 8) {
    global $db_prefix;
    $values = array_merge(range(65, 90), range(97, 122), range(48, 57));
    $max = count($values) - 1;
    $str = '';
    for ($i = 0; $i < $length; $i++) {
      $str .= chr($values[mt_rand(0, $max)]);
    }
    return str_replace('simpletest', 's', $db_prefix) . $str;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
DrupalTestCase::$assertions	protected	property	Assertions thrown in that test case.
DrupalTestCase::$originalFileDirectory	protected	property	The original file directory, before it was changed for testing purposes.
DrupalTestCase::$originalPrefix	protected	property	The original database prefix, before it was changed for testing purposes.
DrupalTestCase::$results	public	property	Current results of this test case.
DrupalTestCase::$skipClasses	protected	property	This class is skipped when looking for the source of an assertion.
DrupalTestCase::$testId	protected	property	The test run ID.
DrupalTestCase::$timeLimit	protected	property	Time limit for the test.
DrupalTestCase::assert	protected	function	Internal helper: stores the assert.
DrupalTestCase::assertEqual	protected	function	Check to see if two values are equal.
DrupalTestCase::assertFalse	protected	function	Check to see if a value is false (an empty string, 0, NULL, or FALSE).
DrupalTestCase::assertIdentical	protected	function	Check to see if two values are identical.
DrupalTestCase::assertNotEqual	protected	function	Check to see if two values are not equal.
DrupalTestCase::assertNotIdentical	protected	function	Check to see if two values are not identical.
DrupalTestCase::assertNotNull	protected	function	Check to see if a value is not NULL.
DrupalTestCase::assertNull	protected	function	Check to see if a value is NULL.
DrupalTestCase::assertTrue	protected	function	Check to see if a value is not false (not an empty string, 0, NULL, or FALSE).
DrupalTestCase::error	protected	function	Fire an error assertion.	1
DrupalTestCase::errorHandler	public	function	Handle errors.
DrupalTestCase::exceptionHandler	protected	function	Handle exceptions.
DrupalTestCase::fail	protected	function	Fire an assertion that is always negative.
DrupalTestCase::getAssertionCall	protected	function	Cycles through backtrace until the first non-assertion method is found.
DrupalTestCase::insertAssert	public static	function	Store an assertion from outside the testing context.
DrupalTestCase::pass	protected	function	Fire an assertion that is always positive.
DrupalTestCase::randomName	public static	function	Generates a random string containing letters and numbers.
DrupalTestCase::randomString	public static	function	Generates a random string of ASCII characters of codes 32 to 126.
DrupalTestCase::run	public	function	Run all tests in this class.
DrupalTestCase::__construct	public	function	Constructor for DrupalWebTestCase.	2