class PHPUnit_Framework_ComparisonFailure

class PHPUnit_Framework_ComparisonFailure extends PHPUnit_Framework_AssertionFailedError {

  /**
   * Expected value of the retrieval which does not match $actual.
   * @var mixed
   */
  protected $expected;

  /**
   * Actually retrieved value which does not match $expected.
   * @var mixed
   */
  protected $actual;

  /**
   * The string representation of the expected value
   * @var string
   */
  protected $expectedAsString;

  /**
   * The string representation of the actual value
   * @var string
   */
  protected $actualAsString;

  /**
   * @var boolean
   */
  protected $identical;

  /**
   * Optional message which is placed in front of the first line
   * returned by toString().
   * @var string
   */
  protected $message;

  /**
   * Initialises with the expected value and the actual value.
   *
   * @param mixed $expected Expected value retrieved.
   * @param mixed $actual Actual value retrieved.
   * @param string $expectedAsString
   * @param string $actualAsString
   * @param boolean $identical
   * @param string $message A string which is prefixed on all returned lines
   *                        in the difference output.
   */
  public function __construct($expected, $actual, $expectedAsString, $actualAsString, $identical = FALSE, $message = '') {
    $this->expected = $expected;
    $this->actual = $actual;
    $this->expectedAsString = $expectedAsString;
    $this->actualAsString = $actualAsString;
    $this->message = $message;
  }

  /**
   * @return mixed
   */
  public function getActual() {
    return $this->actual;
  }

  /**
   * @return mixed
   */
  public function getExpected() {
    return $this->expected;
  }

  /**
   * @return string
   */
  public function getActualAsString() {
    return $this->actualAsString;
  }

  /**
   * @return string
   */
  public function getExpectedAsString() {
    return $this->expectedAsString;
  }

  /**
   * @return string
   */
  public function getDiff() {
    return $this->actualAsString || $this->expectedAsString ? PHPUnit_Util_Diff::diff($this->expectedAsString, $this->actualAsString) : '';
  }

  /**
   * @return string
   */
  public function toString() {
    return $this->message . $this
      ->getDiff();
  }

}