package vault

import (
	"regexp"
	"testing"
)

func TestMemZero(t *testing.T) {
	b := []byte{1, 2, 3, 4}
	memzero(b)
	if b[0] != 0 || b[1] != 0 || b[2] != 0 || b[3] != 0 {
		t.Fatalf("bad: %v", b)
	}
}

func TestRandBytes(t *testing.T) {
	b := randbytes(12)
	if len(b) != 12 {
		t.Fatalf("bad: %v", b)
	}
}

func TestGenerateUUID(t *testing.T) {
	prev := generateUUID()
	for i := 0; i < 100; i++ {
		id := generateUUID()
		if prev == id {
			t.Fatalf("Should get a new ID!")
		}

		matched, err := regexp.MatchString(
			"[\\da-f]{8}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{4}-[\\da-f]{12}", id)
		if !matched || err != nil {
			t.Fatalf("expected match %s %v %s", id, matched, err)
		}
	}
}