class PHPUnit_Framework_TestFailure

class PHPUnit_Framework_TestFailure {

  /**
   * @var    PHPUnit_Framework_Test
   */
  protected $failedTest;

  /**
   * @var    Exception
   */
  protected $thrownException;

  /**
   * Constructs a TestFailure with the given test and exception.
   *
   * @param  PHPUnit_Framework_Test $failedTest
   * @param  Exception               $thrownException
   */
  public function __construct(PHPUnit_Framework_Test $failedTest, Exception $thrownException) {
    $this->failedTest = $failedTest;
    $this->thrownException = $thrownException;
  }

  /**
   * Returns a short description of the failure.
   *
   * @return string
   */
  public function toString() {
    return sprintf('%s: %s', $this->failedTest
      ->toString(), $this->thrownException
      ->getMessage());
  }

  /**
   * Returns a description for the thrown exception.
   *
   * @return string
   * @since  Method available since Release 3.4.0
   */
  public function getExceptionAsString() {
    return self::exceptionToString($this->thrownException);
  }

  /**
   * Returns a description for an exception.
   *
   * @param  Exception $e
   * @return string
   * @since  Method available since Release 3.2.0
   */
  public static function exceptionToString(Exception $e) {
    if ($e instanceof PHPUnit_Framework_SelfDescribing) {
      $buffer = $e
        ->toString();
      if ($e instanceof PHPUnit_Framework_ExpectationFailedException && $e
        ->getComparisonFailure()) {
        $buffer = $buffer . "\n" . $e
          ->getComparisonFailure()
          ->getDiff();
      }
      if (!empty($buffer)) {
        $buffer = trim($buffer) . "\n";
      }
    }
    else {
      if ($e instanceof PHPUnit_Framework_Error) {
        $buffer = $e
          ->getMessage() . "\n";
      }
      else {
        $buffer = get_class($e) . ': ' . $e
          ->getMessage() . "\n";
      }
    }
    return $buffer;
  }

  /**
   * Gets the failed test.
   *
   * @return Test
   */
  public function failedTest() {
    return $this->failedTest;
  }

  /**
   * Gets the thrown exception.
   *
   * @return Exception
   */
  public function thrownException() {
    return $this->thrownException;
  }

  /**
   * Returns the exception's message.
   *
   * @return string
   */
  public function exceptionMessage() {
    return $this
      ->thrownException()
      ->getMessage();
  }

  /**
   * Returns TRUE if the thrown exception
   * is of type AssertionFailedError.
   *
   * @return boolean
   */
  public function isFailure() {
    return $this
      ->thrownException() instanceof PHPUnit_Framework_AssertionFailedError;
  }

}