package mask

import (
	"reflect"
	"testing"
)

func TestEmailsMasksEachEmail(t *testing.T) {
	got := Emails([]string{"alice@example.com", "bo@example.org", "invalid"})
	want := []string{"a***e@example.com", "b***@example.org", "invalid"}

	if !reflect.DeepEqual(got, want) {
		t.Fatalf("Emails() = %#v, want %#v", got, want)
	}
}

func TestEmailsPreservesNil(t *testing.T) {
	if got := Emails(nil); got != nil {
		t.Fatalf("Emails(nil) = %#v, want nil", got)
	}
}