package nomino

import (
	"testing"

	"github.com/google/uuid"
	"github.com/nalgeon/be"
)

func TestUUID(t *testing.T) {
	st, err := UUID(nil)(nil)
	be.Err(t, err, nil)
	_, parseErr := uuid.Parse(st)
	be.Err(t, parseErr, nil)
}

type badRead struct{}

func (badRead) Read([]byte) (int, error) {
	return 0, errTest
}

func TestUUIDFail(t *testing.T) {
	uuid.SetRand(badRead{})
	defer uuid.SetRand(nil)

	_, err := UUID(nil)(nil)
	be.Err(t, err, errTest)
}

func TestRand(t *testing.T) {
	st, err := Random()(nil)
	be.Err(t, err, nil)
	be.Equal(t, len(st), 8)
}

func TestRandLen(t *testing.T) {
	st, err := Random(RandomLength(32))(nil)
	be.Err(t, err, nil)
	be.Equal(t, len(st), 32)
}