import { test } from '@substrate-system/tapzero'
import bencode from '../src/index.js'

test(
    'should return an empty value when encoding either null or undefined',
    (t) => {
        t.plan(2)
        t.deepEqual(bencode.encode(null), new Uint8Array())
        t.deepEqual(bencode.encode(undefined), new Uint8Array())
    }
)

test('should throw when decoding an empty value', function (t) {
    t.plan(1)
    try {
        t.deepEqual(bencode.decode(Buffer.allocUnsafe(0)), null)
    } catch (err) {
        t.ok(err, 'should throw')
    }
})

test('should omit null values when encoding', function (t) {
    t.plan(1)
    const data = [{ empty: null }, { notset: undefined }, null, undefined, 0]
    const result = bencode.decode(bencode.encode(data)!)
    const expected = [{}, {}, 0]
    t.deepEqual(result, expected)
})