public function testUnsetProperty()
{
$objectState = new ObjectState(array('id' => 2));
try {
unset($objectState->id);
$this->fail('Unsetting read-only property succeeded');
} catch (PropertyReadOnlyException $e) {
}
$objectStateGroup = new ObjectStateGroup(array('id' => 2));
try {
unset($objectStateGroup->id);
$this->fail('Unsetting read-only property succeeded');
} catch (PropertyReadOnlyException $e) {
}
}