public function testClear()
{
$new = new stdClass();
$managed = new stdClass();
$removed = new stdClass();
$this->changeSet->add($new);
$this->changeSet->register($managed);
$this->changeSet->remove($removed);
$clearedChangeSet = $this->changeSet->clear();
$this->assertInstanceOf(get_class($clearedChangeSet), $clearedChangeSet);
$this->assertNotSame($this->changeSet, $clearedChangeSet);
$this->assertFalse($clearedChangeSet->isTracking($new));
$this->assertFalse($clearedChangeSet->isTracking($managed));
$this->assertFalse($clearedChangeSet->isTracking($removed));
}
