luhn_test.go

package luhn

import "testing"

func TestLuhn(t *testing.T) {
	validNumbers := []int{79927398713, 4929972884676289, 4532733309529845, 4539088167512356, 5577189519503182, 5499078785968242, 5236582963742210, 379537021417898, 373494930335082, 379203612454689, 6011223604226714, 6011625707082028, 6011964086036747, 3544936439662067, 3533841638640315, 3536137811022331, 5460262971178544, 5493663189154782, 5469544329973911, 30154976989581, 30117694974441, 30561074627774, 36687623048586, 36698326962197, 36387123823311, 5038727783656872, 6763018270225762, 6763677229110829, 6706203675790103, 6709504120728607, 6771712353138831, 4913488277530387, 4913768884688532, 4844723110962866, 6386556471849523, 6387065788050980, 6388464094939979}

	for _, number := range validNumbers {
		if !Valid(number) {
			t.Errorf("%v should be valid", number)
		}

		if CalculateLuhn(number/10) != number%10 {
			t.Errorf("%v's check number should be %v, but got %v", number, number%10, CalculateLuhn(number/10))
		}
	}
}