public function testVatNumberChecksumSuccess()
{
$vies = new Vies();
foreach ($this->vatNumberProvider() as $country => $numbers) {
if (!is_array($numbers[0])) {
$numbers[0] = [$numbers[0]];
}
foreach ($numbers[0] as $number) {
$result = $vies->validateVatSum($country, $number);
$this->assertTrue($result);
}
}
}