syncthing/internal/luhn/luhn_test.go
2014-11-17 12:54:42 +01:00

73 lines
1.7 KiB
Go

// Copyright (C) 2014 The Syncthing Authors.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
package luhn_test
import (
"testing"
"github.com/syncthing/syncthing/internal/luhn"
)
func TestGenerate(t *testing.T) {
// Base 6 Luhn
a := luhn.Alphabet("abcdef")
c, err := a.Generate("abcdef")
if err != nil {
t.Fatal(err)
}
if c != 'e' {
t.Errorf("Incorrect check digit %c != e", c)
}
// Base 10 Luhn
a = luhn.Alphabet("0123456789")
c, err = a.Generate("7992739871")
if err != nil {
t.Fatal(err)
}
if c != '3' {
t.Errorf("Incorrect check digit %c != 3", c)
}
}
func TestInvalidString(t *testing.T) {
a := luhn.Alphabet("ABC")
_, err := a.Generate("7992739871")
t.Log(err)
if err == nil {
t.Error("Unexpected nil error")
}
}
func TestBadAlphabet(t *testing.T) {
a := luhn.Alphabet("01234566789")
_, err := a.Generate("7992739871")
t.Log(err)
if err == nil {
t.Error("Unexpected nil error")
}
}
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")
}
}