import { decode, encode } from './local-operations-cursor.codec';

const secret = 'secret';
const cursor = {
  accountId: 'account',
  at: '2026-01-01T00:00:00.000Z',
  binding: 'owner-filter-binding',
  id: 'operation',
  movingEnd: false,
  to: '2026-02-01T00:00:00.000Z',
};

describe('local operations cursor', () => {
  it('roundtrips the opaque cursor, including its owner and filter binding', () => {
    expect(decode(encode(cursor, secret), secret)).toEqual(cursor);
  });

  it('rejects a tampered cursor and a cursor signed with a different key', () => {
    const encoded = encode(cursor, secret);
    expect(() => decode(`${encoded}x`, secret)).toThrow();
    expect(() => decode(encoded, 'different-secret')).toThrow();
  });
});