/**
* @covers LuhnAlgorithm::calculcateCheckDigit
* @dataProvider provider
*/
public function testCalculcateCheckDigit($number)
{
$number = strval(LuhnAlgorithm::toInteger($number));
$last = strlen($number) - 1;
// Check digit is the last number
$checkDigit = $number[$last];
$number = substr($number, 0, $last);
$calcCheckDigit = LuhnAlgorithm::calculateCheckDigit($number);
$this->assertEquals($checkDigit, $calcCheckDigit);
}
