cards/lib/validate_test.go
2025-01-31 19:28:11 +02:00

60 lines
766 B
Go

package validate
import "testing"
func TestLuhn(t *testing.T) {
tests := []struct {
name string
pan string
want bool
}{
{
"Mastercard",
"5555555555554444",
true,
},
{
"Visa",
"4111111111111111",
true,
},
{
"example from wiki",
"17893729974",
true,
},
{
"another example",
"79927398713",
true,
},
{
"worong check digit",
"17893729975",
false,
},
{
"off by one error",
"27893729974",
false,
},
{
"empty",
"",
false,
},
{
"not a digit",
"27893a29974",
false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := Luhn(tt.pan)
if got != tt.want {
t.Errorf("Luhn(%s) = %v, want %v", tt.name, got, tt.want)
}
})
}
}