public function testToStorageValue($data, $sortKey, $dataText, $sortKeyString)
{
$value = new FieldValue();
$value->data = $data;
$value->sortKey = $sortKey;
$storageFieldValue = new StorageFieldValue();
$this->converter->toStorageValue($value, $storageFieldValue);
self::assertSame($dataText, $storageFieldValue->dataText);
self::assertSame($sortKeyString, $storageFieldValue->sortKeyString);
}