C:/drupal/modules/simpletest/expectation.php

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<?php
// $Id: expectation.php,v 1.2 2008/05/10 06:55:09 dries Exp $

class SimpleExpectation {
  var $_dumper = false;
  var $_message;

  function SimpleExpectation($message = '%s') {
    $this->_message = $message;
  }

  function test($compare) {}

  function testMessage($compare) {}

  function overlayMessage($compare, $dumper) {
    $this->_dumper = $dumper;
    return sprintf($this->_message, $this->testMessage($compare));
  }

  function &_getDumper() {
    if (!$this->_dumper) {
      $dumper = &new SimpleDumper();
      return $dumper;
    }
    return $this->_dumper;
  }

  function isExpectation($expectation) {
    return is_object($expectation) && is_a($expectation, 'SimpleExpectation');
  }
}

class AnythingExpectation extends SimpleExpectation {

  function test($compare) {
    return true;
  }

  function testMessage($compare) {
    $dumper = &$this->_getDumper();
    return 'Anything always matches [' . $dumper->describeValue($compare) . ']';
  }
}

class TrueExpectation extends SimpleExpectation {

  function test($compare) {
    return (boolean)$compare;
  }

  function testMessage($compare) {
    $dumper = &$this->_getDumper();
    return 'Expected true, got [' . $dumper->describeValue($compare) . ']';
  }
}

---