exercism/go/luhn/luhn_test.go

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package luhn
import "testing"
var validTests = []struct {
n string
ok bool
}{
{"738", false},
{"8739567", true},
{"1111", false},
{"8763", true},
{" ", false},
{"", false},
{"2323 2005 7766 3554", true},
}
var addTests = []struct{ raw, luhn string }{
{"123", "1230"},
{"873956", "8739567"},
{"837263756", "8372637564"},
{"2323 2005 7766 355", "2323 2005 7766 3554"},
// bonus Unicode cases
// {"2323·2005·7766·355", "2323·2005·7766·3554"},
// {"", ""},
}
func TestValid(t *testing.T) {
for _, test := range validTests {
if ok := Valid(test.n); ok != test.ok {
t.Fatalf("Valid(%s) = %t, want %t.", test.n, ok, test.ok)
}
}
}
func TestAddCheck(t *testing.T) {
for _, test := range addTests {
if luhn := AddCheck(test.raw); luhn != test.luhn {
t.Fatalf("AddCheck(%s) = %s, want %s.", test.raw, luhn, test.luhn)
}
}
}
func BenchmarkValid(b *testing.B) {
for i := 0; i < b.N; i++ {
Valid("2323 2005 7766 3554")
}
}
func BenchmarkAddCheck(b *testing.B) {
for i := 0; i < b.N; i++ {
AddCheck("2323 2005 7766 355")
}
}