syncthing/luhn/luhn_test.go

package luhn_test

import (
	"testing"

	"github.com/calmh/syncthing/luhn"
)

func TestGenerate(t *testing.T) {
	// Base 6 Luhn
	a := luhn.Alphabet("abcdef")
	c := a.Generate("abcdef")
	if c != 'e' {
		t.Errorf("Incorrect check digit %c != e", c)
	}

	// Base 10 Luhn
	a = luhn.Alphabet("0123456789")
	c = a.Generate("7992739871")
	if c != '3' {
		t.Errorf("Incorrect check digit %c != 3", c)
	}
}

func TestValidate(t *testing.T) {
	a := luhn.Alphabet("abcdef")
	if !a.Validate("abcdefe") {
		t.Errorf("Incorrect validation response for abcdefe")
	}
	if a.Validate("abcdefd") {
		t.Errorf("Incorrect validation response for abcdefd")
	}
}